diff options
Diffstat (limited to 'plug-ins/lighting')
30 files changed, 6270 insertions, 0 deletions
diff --git a/plug-ins/lighting/Makefile.am b/plug-ins/lighting/Makefile.am new file mode 100644 index 0000000..92c3ce3 --- /dev/null +++ b/plug-ins/lighting/Makefile.am @@ -0,0 +1,65 @@ +## Process this file with automake to produce Makefile.in + +if OS_WIN32 +mwindows = -mwindows +else +libm = -lm +endif + +libgimpui = $(top_builddir)/libgimp/libgimpui-$(GIMP_API_VERSION).la +libgimpconfig = $(top_builddir)/libgimpconfig/libgimpconfig-$(GIMP_API_VERSION).la +libgimpwidgets = $(top_builddir)/libgimpwidgets/libgimpwidgets-$(GIMP_API_VERSION).la +libgimp = $(top_builddir)/libgimp/libgimp-$(GIMP_API_VERSION).la +libgimpcolor = $(top_builddir)/libgimpcolor/libgimpcolor-$(GIMP_API_VERSION).la +libgimpmath = $(top_builddir)/libgimpmath/libgimpmath-$(GIMP_API_VERSION).la +libgimpbase = $(top_builddir)/libgimpbase/libgimpbase-$(GIMP_API_VERSION).la + +if HAVE_WINDRES +include $(top_srcdir)/build/windows/gimprc-plug-ins.rule +lighting_RC = lighting.rc.o +endif + +AM_LDFLAGS = $(mwindows) + +SUBDIRS = images + +libexecdir = $(gimpplugindir)/plug-ins/lighting + +libexec_PROGRAMS = lighting + +lighting_SOURCES = \ + lighting-apply.c \ + lighting-apply.h \ + lighting-image.c \ + lighting-image.h \ + lighting-main.c \ + lighting-main.h \ + lighting-preview.c \ + lighting-preview.h \ + lighting-shade.c \ + lighting-shade.h \ + lighting-stock.c \ + lighting-stock.h \ + lighting-ui.c \ + lighting-ui.h + +AM_CPPFLAGS = \ + -I$(top_srcdir) \ + $(GTK_CFLAGS) \ + $(GEGL_CFLAGS) \ + -I$(includedir) + +LDADD = \ + $(libm) \ + $(libgimpui) \ + $(libgimpwidgets) \ + $(libgimpconfig) \ + $(libgimp) \ + $(libgimpcolor) \ + $(libgimpmath) \ + $(libgimpbase) \ + $(GTK_LIBS) \ + $(GEGL_LIBS) \ + $(RT_LIBS) \ + $(INTLLIBS) \ + $(lighting_RC) diff --git a/plug-ins/lighting/Makefile.in b/plug-ins/lighting/Makefile.in new file mode 100644 index 0000000..96856de --- /dev/null +++ b/plug-ins/lighting/Makefile.in @@ -0,0 +1,1156 @@ +# Makefile.in generated by automake 1.16.3 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2020 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +# Version resources for Microsoft Windows + +VPATH = @srcdir@ +am__is_gnu_make = { \ + if test -z '$(MAKELEVEL)'; then \ + false; \ + elif test -n '$(MAKE_HOST)'; then \ + true; \ + elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \ + true; \ + else \ + false; \ + fi; \ +} +am__make_running_with_option = \ + case $${target_option-} in \ + ?) ;; \ + *) echo "am__make_running_with_option: internal error: invalid" \ + "target option '$${target_option-}' specified" >&2; \ + exit 1;; \ + esac; \ + has_opt=no; \ + sane_makeflags=$$MAKEFLAGS; \ + if $(am__is_gnu_make); then \ + sane_makeflags=$$MFLAGS; 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See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program. If not, see <https://www.gnu.org/licenses/>. + +In other words, you can't sue us for whatever happens while using this ;) + +Have fun, + +Tom diff --git a/plug-ins/lighting/TODO b/plug-ins/lighting/TODO new file mode 100644 index 0000000..06609de --- /dev/null +++ b/plug-ins/lighting/TODO @@ -0,0 +1,15 @@ + +The lighting plug-in "todo"-list: +================================= + +* Supersampling/antialiasing +* Bilinear filtering of environment map +* Refraction back in? +* Support for any-sized non-gray bump-maps. +* Support for gray or alpha-channeled env-maps. +* Zooming and scrolling in preview window +* Autoconf/automake stuff +* Put spotlight back in +* Nicer interactive UI +* Presets +* Multiple light sources diff --git a/plug-ins/lighting/images/Makefile.am b/plug-ins/lighting/images/Makefile.am new file mode 100644 index 0000000..55dfbde --- /dev/null +++ b/plug-ins/lighting/images/Makefile.am @@ -0,0 +1,29 @@ +## Process this file with automake to produce Makefile.in + 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stock-icons.list` > $(@F) + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plug-ins/lighting/images/stock-intensity-ambient-high.png b/plug-ins/lighting/images/stock-intensity-ambient-high.png Binary files differnew file mode 100644 index 0000000..cb886ec --- /dev/null +++ b/plug-ins/lighting/images/stock-intensity-ambient-high.png diff --git a/plug-ins/lighting/images/stock-intensity-ambient-low.png b/plug-ins/lighting/images/stock-intensity-ambient-low.png Binary files differnew file mode 100644 index 0000000..fff7b45 --- /dev/null +++ b/plug-ins/lighting/images/stock-intensity-ambient-low.png diff --git a/plug-ins/lighting/images/stock-intensity-diffuse-high.png b/plug-ins/lighting/images/stock-intensity-diffuse-high.png Binary files differnew file mode 100644 index 0000000..628ec4d --- /dev/null +++ b/plug-ins/lighting/images/stock-intensity-diffuse-high.png diff --git 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index 0000000..b43724b --- /dev/null +++ b/plug-ins/lighting/images/stock-reflectivity-highlight-high.png diff --git a/plug-ins/lighting/images/stock-reflectivity-highlight-low.png b/plug-ins/lighting/images/stock-reflectivity-highlight-low.png Binary files differnew file mode 100644 index 0000000..88cc4fa --- /dev/null +++ b/plug-ins/lighting/images/stock-reflectivity-highlight-low.png diff --git a/plug-ins/lighting/images/stock-reflectivity-specular-high.png b/plug-ins/lighting/images/stock-reflectivity-specular-high.png Binary files differnew file mode 100644 index 0000000..fbd5f54 --- /dev/null +++ b/plug-ins/lighting/images/stock-reflectivity-specular-high.png diff --git a/plug-ins/lighting/images/stock-reflectivity-specular-low.png b/plug-ins/lighting/images/stock-reflectivity-specular-low.png Binary files differnew file mode 100644 index 0000000..2d69d41 --- /dev/null +++ b/plug-ins/lighting/images/stock-reflectivity-specular-low.png diff --git a/plug-ins/lighting/lighting-apply.c b/plug-ins/lighting/lighting-apply.c new file mode 100644 index 0000000..500ed24 --- /dev/null +++ b/plug-ins/lighting/lighting-apply.c @@ -0,0 +1,154 @@ +/******************************************************/ +/* Apply mapping and shading on the whole input image */ +/******************************************************/ + +#include "config.h" + +#include <sys/types.h> + +#include <libgimp/gimp.h> + +#include "lighting-main.h" +#include "lighting-image.h" +#include "lighting-shade.h" +#include "lighting-apply.h" + +#include "libgimp/stdplugins-intl.h" + + +/*************/ +/* Main loop */ +/*************/ + +void +compute_image (void) +{ + gint xcount, ycount; + GimpRGB color; + glong progress_counter = 0; + GimpVector3 p; + gint32 new_image_id = -1; + gint32 new_layer_id = -1; + gint32 index; + guchar *row = NULL; + guchar obpp; + gboolean has_alpha; + get_ray_func ray_func; + + if (mapvals.create_new_image == TRUE || + (mapvals.transparent_background == TRUE && + ! gimp_drawable_has_alpha (input_drawable_id))) + { + /* Create a new image */ + /* ================== */ + + new_image_id = gimp_image_new (width, height, GIMP_RGB); + + if (mapvals.transparent_background == TRUE) + { + /* Add a layer with an alpha channel */ + /* ================================= */ + + new_layer_id = gimp_layer_new (new_image_id, "Background", + width, height, + GIMP_RGBA_IMAGE, + 100.0, + gimp_image_get_default_new_layer_mode (new_image_id)); + } + else + { + /* Create a "normal" layer */ + /* ======================= */ + + new_layer_id = gimp_layer_new (new_image_id, "Background", + width, height, + GIMP_RGB_IMAGE, + 100.0, + gimp_image_get_default_new_layer_mode (new_image_id)); + } + + gimp_image_insert_layer (new_image_id, new_layer_id, -1, 0); + output_drawable_id = new_layer_id; + } + + if (mapvals.bump_mapped == TRUE && mapvals.bumpmap_id != -1) + { + bumpmap_setup (mapvals.bumpmap_id); + } + + precompute_init (width, height); + + if (! mapvals.env_mapped || mapvals.envmap_id == -1) + { + ray_func = get_ray_color; + } + else + { + envmap_setup (mapvals.envmap_id); + + ray_func = get_ray_color_ref; + } + + dest_buffer = gimp_drawable_get_shadow_buffer (output_drawable_id); + + has_alpha = gimp_drawable_has_alpha (output_drawable_id); + + /* FIXME */ + obpp = has_alpha ? 4 : 3; //gimp_drawable_bpp (output_drawable_id); + + row = g_new (guchar, obpp * width); + + gimp_progress_init (_("Lighting Effects")); + + /* Init the first row */ + if (mapvals.bump_mapped == TRUE && mapvals.bumpmap_id != -1 && height >= 2) + interpol_row (0, width, 0); + + for (ycount = 0; ycount < height; ycount++) + { + if (mapvals.bump_mapped == TRUE && mapvals.bumpmap_id != -1) + precompute_normals (0, width, ycount); + + index = 0; + + for (xcount = 0; xcount < width; xcount++) + { + p = int_to_pos (xcount, ycount); + color = (* ray_func) (&p); + + row[index++] = (guchar) (color.r * 255.0); + row[index++] = (guchar) (color.g * 255.0); + row[index++] = (guchar) (color.b * 255.0); + + if (has_alpha) + row[index++] = (guchar) (color.a * 255.0); + + progress_counter++; + } + + gimp_progress_update ((gdouble) progress_counter / + (gdouble) maxcounter); + + gegl_buffer_set (dest_buffer, GEGL_RECTANGLE (0, ycount, width, 1), 0, + has_alpha ? + babl_format ("R'G'B'A u8") : babl_format ("R'G'B' u8"), + row, + GEGL_AUTO_ROWSTRIDE); + } + + gimp_progress_update (1.0); + + g_free (row); + + g_object_unref (dest_buffer); + + gimp_drawable_merge_shadow (output_drawable_id, TRUE); + gimp_drawable_update (output_drawable_id, 0, 0, width, height); + + if (new_image_id!=-1) + { + gimp_display_new (new_image_id); + gimp_displays_flush (); + } + +} diff --git a/plug-ins/lighting/lighting-apply.h b/plug-ins/lighting/lighting-apply.h new file mode 100644 index 0000000..304ef4a --- /dev/null +++ b/plug-ins/lighting/lighting-apply.h @@ -0,0 +1,7 @@ +#ifndef __LIGHTING_APPLY_H__ +#define __LIGHTING_APPLY_H__ + +void init_compute (void); +void compute_image (void); + +#endif /* __LIGHTING_APPLY_H__ */ diff --git a/plug-ins/lighting/lighting-image.c b/plug-ins/lighting/lighting-image.c new file mode 100644 index 0000000..671176f --- /dev/null +++ b/plug-ins/lighting/lighting-image.c @@ -0,0 +1,410 @@ +/*************************************/ +/* GIMP image manipulation routines. */ +/*************************************/ + +#include "config.h" + +#include <gtk/gtk.h> + +#include <libgimp/gimp.h> + +#include "lighting-main.h" +#include "lighting-image.h" +#include "lighting-preview.h" +#include "lighting-ui.h" + + +gint32 input_drawable_id; +gint32 output_drawable_id; +GeglBuffer *source_buffer; +GeglBuffer *dest_buffer; + +gint32 bump_drawable_id; +GeglBuffer *bump_buffer; +const Babl *bump_format; + +gint32 env_drawable_id; +GeglBuffer *env_buffer; + +guchar *preview_rgb_data = NULL; +gint preview_rgb_stride; +cairo_surface_t *preview_surface = NULL; + +glong maxcounter; +gint width, height; +gint env_width, env_height; +GimpRGB background; + +gint border_x1, border_y1, border_x2, border_y2; + +guchar sinemap[256], spheremap[256], logmap[256]; + +/******************/ +/* Implementation */ +/******************/ + +guchar +peek_map (GeglBuffer *buffer, + const Babl *format, + gint x, + gint y) +{ + guchar data[4]; + guchar ret_val; + + gegl_buffer_sample (buffer, x, y, NULL, data, format, + GEGL_SAMPLER_NEAREST, GEGL_ABYSS_NONE); + + if (babl_format_get_bytes_per_pixel (format)) + { + ret_val = data[0]; + } + else + { + ret_val = (guchar)((float)((data[0] + data[1] + data[2])/3.0)); + } + + return ret_val; +} + +GimpRGB +peek (gint x, + gint y) +{ + GimpRGB color; + + gegl_buffer_sample (source_buffer, x, y, NULL, + &color, babl_format ("R'G'B'A double"), + GEGL_SAMPLER_NEAREST, GEGL_ABYSS_NONE); + + if (! babl_format_has_alpha (gegl_buffer_get_format (source_buffer))) + color.a = 1.0; + + return color; +} + +GimpRGB +peek_env_map (gint x, + gint y) +{ + GimpRGB color; + + if (x < 0) + x = 0; + else if (x >= env_width) + x = env_width - 1; + if (y < 0) + y = 0; + else if (y >= env_height) + y = env_height - 1; + + gegl_buffer_sample (env_buffer, x, y, NULL, + &color, babl_format ("R'G'B'A double"), + GEGL_SAMPLER_NEAREST, GEGL_ABYSS_NONE); + + color.a = 1.0; + + return color; +} + +void +poke (gint x, + gint y, + GimpRGB *color) +{ + if (x < 0) + x = 0; + else if (x >= width) + x = width - 1; + if (y < 0) + y = 0; + else if (y >= height) + y = height - 1; + + gegl_buffer_set (dest_buffer, GEGL_RECTANGLE (x, y, 1, 1), 0, + babl_format ("R'G'B'A double"), color, + GEGL_AUTO_ROWSTRIDE); +} + +gint +check_bounds (gint x, + gint y) +{ + if (x < border_x1 || + y < border_y1 || + x >= border_x2 || + y >= border_y2) + return FALSE; + else + return TRUE; +} + +GimpVector3 +int_to_pos (gint x, + gint y) +{ + GimpVector3 pos; + + if (width >= height) + { + pos.x = (gdouble) x / (gdouble) width; + pos.y = (gdouble) y / (gdouble) width; + + pos.y += 0.5 * (1.0 - (gdouble) height / (gdouble) width); + } + else + { + pos.x = (gdouble) x / (gdouble) height; + pos.y = (gdouble) y / (gdouble) height; + + pos.x += 0.5 * (1.0 - (gdouble) width / (gdouble) height); + } + + pos.z = 0.0; + return pos; +} + +GimpVector3 +int_to_posf (gdouble x, + gdouble y) +{ + GimpVector3 pos; + + if (width >= height) + { + pos.x = x / (gdouble) width; + pos.y = y / (gdouble) width; + + pos.y += 0.5 * (1.0 - (gdouble) height / (gdouble) width); + } + else + { + pos.x = x / (gdouble) height; + pos.y = y / (gdouble) height; + + pos.x += 0.5 * (1.0 - (gdouble) width / (gdouble) height); + } + + pos.z = 0.0; + return pos; +} + +void +pos_to_int (gdouble x, + gdouble y, + gint *scr_x, + gint *scr_y) +{ + if (width >= height) + { + y -= 0.5 * (1.0 - (gdouble) height / (gdouble) width); + *scr_x = RINT ((x * (gdouble) width)); + *scr_y = RINT ((y * (gdouble) width)); + } + else + { + x -= 0.5 * (1.0 - (gdouble) width / (gdouble) height); + + *scr_x = RINT ((x * (gdouble) height)); + *scr_y = RINT ((y *(gdouble) height)); + } +} + +void +pos_to_float (gdouble x, + gdouble y, + gdouble *xf, + gdouble *yf) +{ + if (width >= height) + { + y -= 0.5 * (1.0 - (gdouble) height / (gdouble) width); + + *xf = x * (gdouble) (width-1); + *yf = y * (gdouble) (width-1); + } + else + { + x -= 0.5 * (1.0 - (gdouble) width / (gdouble) height); + + *xf = x * (gdouble) (height-1); + *yf = y * (gdouble) (height-1); + } +} + +/**********************************************/ +/* Compute the image color at pos (u,v) using */ +/* Quartics bilinear interpolation stuff. */ +/**********************************************/ + +GimpRGB +get_image_color (gdouble u, + gdouble v, + gint *inside) +{ + gint x1, y1, x2, y2; + GimpRGB p[4]; + + x1 = RINT (u); + y1 = RINT (v); + + if (check_bounds (x1, y1) == FALSE) + { + *inside = FALSE; + return background; + } + + x2 = (x1 + 1); + y2 = (y1 + 1); + + if (check_bounds (x2, y2) == FALSE) + { + *inside = TRUE; + return peek (x1, y1); + } + + *inside = TRUE; + p[0] = peek (x1, y1); + p[1] = peek (x2, y1); + p[2] = peek (x1, y2); + p[3] = peek (x2, y2); + + return gimp_bilinear_rgba (u, v, p); +} + +gdouble +get_map_value (GeglBuffer *buffer, + const Babl *format, + gdouble u, + gdouble v, + gint *inside) +{ + gint x1, y1, x2, y2; + gdouble p[4]; + + x1 = RINT (u); + y1 = RINT (v); + + x2 = (x1 + 1); + y2 = (y1 + 1); + + if (check_bounds (x2, y2) == FALSE) + { + *inside = TRUE; + return (gdouble) peek_map (buffer, format, x1, y1); + } + + *inside = TRUE; + p[0] = (gdouble) peek_map (buffer, format, x1, y1); + p[1] = (gdouble) peek_map (buffer, format, x2, y1); + p[2] = (gdouble) peek_map (buffer, format, x1, y2); + p[3] = (gdouble) peek_map (buffer, format, x2, y2); + + return gimp_bilinear (u, v, p); +} + +static void +compute_maps (void) +{ + gint x; + gdouble val, c, d; + + /* Compute Sine, Log and Spherical transfer function maps */ + /* ====================================================== */ + + c = 1.0 / 255.0; + d = 1.15 * 255.0; + + for (x = 0; x < 256; x++) + { + sinemap[x] = (guchar) (255.0 * (0.5 * (sin ((G_PI * c * (gdouble) x) - + 0.5 * G_PI) + + 1.0))); + spheremap[x] = (guchar) (255.0 * (sqrt (sin (G_PI * (gdouble) x / + 512.0)))); + val = (d * exp (-1.0 / (8.0 * c * ((gdouble) x + 5.0)))); + + if (val > 255.0) + val = 255.0; + logmap[x] = (guchar) val; + } +} + +/****************************************/ +/* Allocate memory for temporary images */ +/****************************************/ + +gint +image_setup (gint32 drawable_id, + gint interactive) +{ + gint w, h; + gboolean ret; + + compute_maps (); + + /* Get some useful info on the input drawable */ + /* ========================================== */ + + input_drawable_id = drawable_id; + output_drawable_id = drawable_id; + + ret = gimp_drawable_mask_intersect (drawable_id, + &border_x1, &border_y1, &w, &h); + + border_x2 = border_x1 + w; + border_y2 = border_y1 + h; + + if (! ret) + return FALSE; + + width = gimp_drawable_width (input_drawable_id); + height = gimp_drawable_height (input_drawable_id); + + source_buffer = gimp_drawable_get_buffer (input_drawable_id); + + maxcounter = (glong) width * (glong) height; + + if (interactive) + { + preview_rgb_stride = cairo_format_stride_for_width (CAIRO_FORMAT_RGB24, + PREVIEW_WIDTH); + preview_rgb_data = g_new0 (guchar, preview_rgb_stride * PREVIEW_HEIGHT); + preview_surface = cairo_image_surface_create_for_data (preview_rgb_data, + CAIRO_FORMAT_RGB24, + PREVIEW_WIDTH, + PREVIEW_HEIGHT, + preview_rgb_stride); + } + + return TRUE; +} + +void +bumpmap_setup (gint32 bumpmap_id) +{ + if (bumpmap_id != -1) + { + if (! bump_buffer) + { + bump_buffer = gimp_drawable_get_buffer (bumpmap_id); + } + + if (gimp_drawable_is_rgb (bumpmap_id)) + bump_format = babl_format ("R'G'B' u8"); + else + bump_format = babl_format ("Y' u8"); /* FIXME */ + } +} + +void +envmap_setup (gint32 envmap_id) +{ + if (envmap_id != -1 && ! env_buffer) + { + env_width = gimp_drawable_width (envmap_id); + env_height = gimp_drawable_height (envmap_id); + + env_buffer = gimp_drawable_get_buffer (envmap_id); + } +} diff --git a/plug-ins/lighting/lighting-image.h b/plug-ins/lighting/lighting-image.h new file mode 100644 index 0000000..817c948 --- /dev/null +++ b/plug-ins/lighting/lighting-image.h @@ -0,0 +1,69 @@ +#ifndef __LIGHTING_IMAGE_H__ +#define __LIGHTING_IMAGE_H__ + +#include <libgimp/gimp.h> +#include <libgimp/gimpui.h> + +extern gint32 input_drawable_id; +extern gint32 output_drawable_id; +extern GeglBuffer *source_buffer; +extern GeglBuffer *dest_buffer; + +extern gint32 bump_drawable_id; +extern GeglBuffer *bump_buffer; +extern const Babl *bump_format; + +extern gint32 env_drawable_id; +extern GeglBuffer *env_buffer; + +extern guchar *preview_rgb_data; +extern gint preview_rgb_stride; +extern cairo_surface_t *preview_surface; + +extern glong maxcounter; +extern gint width,height,env_width,env_height; +extern GimpRGB background; + +extern gint border_x1, border_y1, border_x2, border_y2; + +extern guchar sinemap[256], spheremap[256], logmap[256]; + +guchar peek_map (GeglBuffer *buffer, + const Babl *format, + gint x, + gint y); +GimpRGB peek (gint x, + gint y); +GimpRGB peek_env_map (gint x, + gint y); +void poke (gint x, + gint y, + GimpRGB *color); +gint check_bounds (gint x, + gint y); +GimpVector3 int_to_pos (gint x, + gint y); +GimpVector3 int_to_posf (gdouble x, + gdouble y); +void pos_to_int (gdouble x, + gdouble y, + gint *scr_x, + gint *scr_y); +void pos_to_float (gdouble x, + gdouble y, + gdouble *xf, + gdouble *yf); +GimpRGB get_image_color (gdouble u, + gdouble v, + gint *inside); +gdouble get_map_value (GeglBuffer *buffer, + const Babl *format, + gdouble u, + gdouble v, + gint *inside); +gint image_setup (gint32 drawable_id, + gint interactive); +void bumpmap_setup (gint32 bumpmap_id); +void envmap_setup (gint32 envmap_id); + +#endif /* __LIGHTING_IMAGE_H__ */ diff --git a/plug-ins/lighting/lighting-main.c b/plug-ins/lighting/lighting-main.c new file mode 100644 index 0000000..f732b3c --- /dev/null +++ b/plug-ins/lighting/lighting-main.c @@ -0,0 +1,330 @@ +/* Lighting Effects 0.2.2 -- image filter plug-in for GIMP + * + * Copyright (C) 1996-98 Tom Bech + * Copyright (C) 1996-98 Federico Mena Quintero + * + * E-mail: tomb@gimp.org (Tom) or quartic@gimp.org (Federico) + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <gtk/gtk.h> + +#include <libgimp/gimp.h> + +#include "lighting-apply.h" +#include "lighting-image.h" +#include "lighting-main.h" +#include "lighting-preview.h" +#include "lighting-shade.h" +#include "lighting-ui.h" + +#include "libgimp/stdplugins-intl.h" + + +LightingValues mapvals; + +/******************/ +/* Implementation */ +/******************/ + +/*************************************/ +/* Set parameters to standard values */ +/*************************************/ + +static void +set_default_settings (void) +{ + gint k; + + mapvals.update_enabled = TRUE; + mapvals.light_selected = 0; + mapvals.light_isolated = FALSE; + + gimp_vector3_set (&mapvals.viewpoint, 0.5, 0.5, 0.25); + gimp_vector3_set (&mapvals.planenormal, 0.0, 0.0, 1.0); + + gimp_vector3_set (&mapvals.lightsource[0].position, -1.0, -1.0, 1.0); + gimp_vector3_set (&mapvals.lightsource[0].direction, -1.0, -1.0, 1.0); + + gimp_rgba_set (&mapvals.lightsource[0].color, 1.0, 1.0, 1.0, 1.0); + mapvals.lightsource[0].intensity = 1.0; + mapvals.lightsource[0].type = POINT_LIGHT; + mapvals.lightsource[0].active = TRUE; + + /* init lights 2 and 3 pos to upper left and below */ + gimp_vector3_set (&mapvals.lightsource[1].position, 2.0, -1.0, 1.0); + gimp_vector3_set (&mapvals.lightsource[1].direction, 1.0, -1.0, 1.0); + + gimp_vector3_set (&mapvals.lightsource[2].position, 1.0, 2.0, 1.0); + gimp_vector3_set (&mapvals.lightsource[2].direction, 0.0, 1.0, 1.0); + + /* init any remaining lights to directly overhead */ + for (k = 3; k < NUM_LIGHTS; k++) + { + gimp_vector3_set (&mapvals.lightsource[k].position, 0.0, 0.0, 1.0); + gimp_vector3_set (&mapvals.lightsource[k].direction, 0.0, 0.0, 1.0); + } + + for (k = 1; k < NUM_LIGHTS; k++) + { + gimp_rgba_set (&mapvals.lightsource[k].color, 1.0, 1.0, 1.0, 1.0); + mapvals.lightsource[k].intensity = 1.0; + mapvals.lightsource[k].type = NO_LIGHT; + mapvals.lightsource[k].active = TRUE; + } + + mapvals.material.ambient_int = 0.2; + mapvals.material.diffuse_int = 0.5; + mapvals.material.diffuse_ref = 0.4; + mapvals.material.specular_ref = 0.5; + mapvals.material.highlight = 27.0; + mapvals.material.metallic = FALSE; + + mapvals.pixel_threshold = 0.25; + mapvals.max_depth = 3.0; + mapvals.preview_zoom_factor = 1.0; + + mapvals.bumpmaptype = 0; + mapvals.bumpmin = 0.0; + mapvals.bumpmax = 0.1; + + mapvals.antialiasing = FALSE; + mapvals.create_new_image = FALSE; + mapvals.transparent_background = FALSE; + mapvals.bump_mapped = FALSE; + mapvals.env_mapped = FALSE; + mapvals.ref_mapped = FALSE; + mapvals.previewquality = FALSE; + mapvals.interactive_preview = TRUE; + + mapvals.bumpmap_id = -1; + mapvals.envmap_id = -1; +} + +static void +check_drawables (void) +{ + if (mapvals.bump_mapped) + { + if (mapvals.bumpmap_id != -1 && + gimp_item_get_image (mapvals.bumpmap_id) == -1) + { + mapvals.bump_mapped = FALSE; + mapvals.bumpmap_id = -1; + } + + if (gimp_drawable_is_indexed (mapvals.bumpmap_id) || + (gimp_drawable_width (mapvals.drawable_id) != + gimp_drawable_width (mapvals.bumpmap_id)) || + (gimp_drawable_height (mapvals.drawable_id) != + gimp_drawable_height (mapvals.bumpmap_id))) + { + mapvals.bump_mapped = FALSE; + mapvals.bumpmap_id = -1; + } + } + + if (mapvals.env_mapped) + { + if (mapvals.envmap_id != -1 && + gimp_item_get_image (mapvals.envmap_id) == -1) + { + mapvals.env_mapped = FALSE; + mapvals.envmap_id = -1; + } + + if (gimp_drawable_is_gray (mapvals.envmap_id) || + gimp_drawable_has_alpha (mapvals.envmap_id)) + { + mapvals.env_mapped = FALSE; + mapvals.envmap_id = -1; + } + } +} + +static void +query (void) +{ + static const GimpParamDef args[] = + { + { GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" }, + { GIMP_PDB_IMAGE, "image", "Input image" }, + { GIMP_PDB_DRAWABLE, "drawable", "Input drawable" }, + { GIMP_PDB_DRAWABLE, "bumpdrawable", "Bumpmap drawable (set to 0 if disabled)" }, + { GIMP_PDB_DRAWABLE, "envdrawable", "Environmentmap drawable (set to 0 if disabled)" }, + { GIMP_PDB_INT32, "dobumpmap", "Enable bumpmapping (TRUE/FALSE)" }, + { GIMP_PDB_INT32, "doenvmap", "Enable envmapping (TRUE/FALSE)" }, + { GIMP_PDB_INT32, "bumpmaptype", "Type of mapping (0=linear,1=log, 2=sinusoidal, 3=spherical)" }, + { GIMP_PDB_INT32, "lighttype", "Type of lightsource (0=point,1=directional,3=spot,4=none)" }, + { GIMP_PDB_COLOR, "lightcolor", "Lightsource color (r,g,b)" }, + { GIMP_PDB_FLOAT, "lightposition-x", "Lightsource position (x,y,z)" }, + { GIMP_PDB_FLOAT, "lightposition-y", "Lightsource position (x,y,z)" }, + { GIMP_PDB_FLOAT, "lightposition-z", "Lightsource position (x,y,z)" }, + { GIMP_PDB_FLOAT, "lightdirection-x", "Lightsource direction [x,y,z]" }, + { GIMP_PDB_FLOAT, "lightdirection-y", "Lightsource direction [x,y,z]" }, + { GIMP_PDB_FLOAT, "lightdirection-z", "Lightsource direction [x,y,z]" }, + { GIMP_PDB_FLOAT, "ambient-intensity", "Material ambient intensity (0..1)" }, + { GIMP_PDB_FLOAT, "diffuse-intensity", "Material diffuse intensity (0..1)" }, + { GIMP_PDB_FLOAT, "diffuse-reflectivity", "Material diffuse reflectivity (0..1)" }, + { GIMP_PDB_FLOAT, "specular-reflectivity", "Material specular reflectivity (0..1)" }, + { GIMP_PDB_FLOAT, "highlight", "Material highlight (0..->), note: it's exponential" }, + { GIMP_PDB_INT32, "antialiasing", "Apply antialiasing (TRUE/FALSE)" }, + { GIMP_PDB_INT32, "newimage", "Create a new image (TRUE/FALSE)" }, + { GIMP_PDB_INT32, "transparentbackground", "Make background transparent (TRUE/FALSE)" } + }; + + gimp_install_procedure (PLUG_IN_PROC, + N_("Apply various lighting effects to an image"), + "No help yet", + "Tom Bech & Federico Mena Quintero", + "Tom Bech & Federico Mena Quintero", + "Version 0.2.0, March 15 1998", + N_("_Lighting Effects..."), + "RGB*", + GIMP_PLUGIN, + G_N_ELEMENTS (args), 0, + args, NULL); + + gimp_plugin_menu_register (PLUG_IN_PROC, + "<Image>/Filters/Light and Shadow/Light"); +} + +static void +run (const gchar *name, + gint nparams, + const GimpParam *param, + gint *nreturn_vals, + GimpParam **return_vals) +{ + static GimpParam values[1]; + GimpRunMode run_mode; + gint32 drawable_id; + GimpPDBStatusType status = GIMP_PDB_SUCCESS; + + INIT_I18N (); + gegl_init (NULL, NULL); + + *nreturn_vals = 1; + *return_vals = values; + + values[0].type = GIMP_PDB_STATUS; + values[0].data.d_status = status; + + /* Set default values */ + /* ================== */ + + set_default_settings (); + + /* Possibly retrieve data */ + /* ====================== */ + + gimp_get_data (PLUG_IN_PROC, &mapvals); + + /* Get the specified drawable */ + /* ========================== */ + + run_mode = param[0].data.d_int32; + drawable_id = param[2].data.d_drawable; + + mapvals.drawable_id = drawable_id; + + check_drawables (); + + if (status == GIMP_PDB_SUCCESS) + { + /* Make sure that the drawable is RGBA or RGB color */ + /* ================================================ */ + + if (gimp_drawable_is_rgb (drawable_id)) + { + switch (run_mode) + { + case GIMP_RUN_INTERACTIVE: + if (main_dialog (drawable_id)) + { + compute_image (); + + gimp_set_data (PLUG_IN_PROC, + &mapvals, sizeof (LightingValues)); + gimp_displays_flush (); + } + break; + + case GIMP_RUN_WITH_LAST_VALS: + if (image_setup (drawable_id, FALSE)) + compute_image (); + gimp_displays_flush (); + break; + + case GIMP_RUN_NONINTERACTIVE: + if (nparams != 24) + { + status = GIMP_PDB_CALLING_ERROR; + } + else + { + mapvals.bumpmap_id = param[3].data.d_drawable; + mapvals.envmap_id = param[4].data.d_drawable; + mapvals.bump_mapped = (gint) param[5].data.d_int32; + mapvals.env_mapped = (gint) param[6].data.d_int32; + mapvals.bumpmaptype = (gint) param[7].data.d_int32; + mapvals.lightsource[0].type = (LightType) param[8].data.d_int32; + mapvals.lightsource[0].color = param[9].data.d_color; + mapvals.lightsource[0].position.x = param[10].data.d_float; + mapvals.lightsource[0].position.y = param[11].data.d_float; + mapvals.lightsource[0].position.z = param[12].data.d_float; + mapvals.lightsource[0].direction.x = param[13].data.d_float; + mapvals.lightsource[0].direction.y = param[14].data.d_float; + mapvals.lightsource[0].direction.z = param[15].data.d_float; + mapvals.material.ambient_int = param[16].data.d_float; + mapvals.material.diffuse_int = param[17].data.d_float; + mapvals.material.diffuse_ref = param[18].data.d_float; + mapvals.material.specular_ref = param[19].data.d_float; + mapvals.material.highlight = param[20].data.d_float; + mapvals.antialiasing = (gint) param[21].data.d_int32; + mapvals.create_new_image = (gint) param[22].data.d_int32; + mapvals.transparent_background = (gint) param[23].data.d_int32; + + check_drawables (); + if (image_setup (drawable_id, FALSE)) + compute_image (); + } + default: + break; + } + } + else + { + status = GIMP_PDB_EXECUTION_ERROR; + } + } + + values[0].data.d_status = status; + + g_free (xpostab); + g_free (ypostab); +} + +const GimpPlugInInfo PLUG_IN_INFO = +{ + NULL, /* init_proc */ + NULL, /* quit_proc */ + query, /* query_proc */ + run, /* run_proc */ +}; + +MAIN () diff --git a/plug-ins/lighting/lighting-main.h b/plug-ins/lighting/lighting-main.h new file mode 100644 index 0000000..f547b2d --- /dev/null +++ b/plug-ins/lighting/lighting-main.h @@ -0,0 +1,104 @@ +#ifndef __LIGHTING_MAIN_H__ +#define __LIGHTING_MAIN_H__ + +/* Defines and stuff */ +/* ================= */ + +#define PLUG_IN_PROC "plug-in-lighting" +#define PLUG_IN_BINARY "lighting" +#define PLUG_IN_ROLE "gimp-lighting" + +#define TILE_CACHE_SIZE 16 +#define NUM_LIGHTS 6 + +/* Typedefs */ +/* ======== */ + +typedef enum +{ + POINT_LIGHT, + DIRECTIONAL_LIGHT, + SPOT_LIGHT, + NO_LIGHT +} LightType; + +enum +{ + LINEAR_MAP, + LOGARITHMIC_MAP, + SINUSOIDAL_MAP, + SPHERICAL_MAP +}; + +enum +{ + IMAGE_BUMP, + WAVES_BUMP +}; + +typedef struct +{ + gdouble ambient_int; + gdouble diffuse_int; + gdouble diffuse_ref; + gdouble specular_ref; + gdouble highlight; + gboolean metallic; + GimpRGB color; +} MaterialSettings; + +typedef struct +{ + LightType type; + GimpVector3 position; + GimpVector3 direction; + GimpRGB color; + gdouble intensity; + gboolean active; +} LightSettings; + +typedef struct +{ + gint32 drawable_id; + gint32 bumpmap_id; + gint32 envmap_id; + + /* Render variables */ + /* ================ */ + + GimpVector3 viewpoint; + GimpVector3 planenormal; + LightSettings lightsource[NUM_LIGHTS]; + MaterialSettings material; + MaterialSettings ref_material; + + gdouble pixel_threshold; + gdouble bumpmax,bumpmin; + gint max_depth; + gint bumpmaptype; + + /* Flags */ + gint antialiasing; + gint create_new_image; + gint transparent_background; + gint bump_mapped; + gint env_mapped; + gint ref_mapped; + gint bumpstretch; + gint previewquality; + gboolean symbols; + gboolean interactive_preview; + + /* Misc */ + gboolean update_enabled; + gint light_selected; + gboolean light_isolated; + gdouble preview_zoom_factor; +} LightingValues; + +/* Externally visible variables */ +/* ============================ */ + +extern LightingValues mapvals; + +#endif /* __LIGHTING_MAIN_H__ */ diff --git a/plug-ins/lighting/lighting-preview.c b/plug-ins/lighting/lighting-preview.c new file mode 100644 index 0000000..e4bbd26 --- /dev/null +++ b/plug-ins/lighting/lighting-preview.c @@ -0,0 +1,496 @@ +/*************************************************/ +/* Compute a preview image and preview wireframe */ +/*************************************************/ + +#include "config.h" + +#include <gtk/gtk.h> + +#include <libgimp/gimp.h> +#include <libgimpmath/gimpmath.h> + +#include "lighting-main.h" +#include "lighting-ui.h" +#include "lighting-image.h" +#include "lighting-apply.h" +#include "lighting-shade.h" + +#include "lighting-preview.h" + + +#define LIGHT_SYMBOL_SIZE 8 + +static gint handle_xpos = 0, handle_ypos = 0; + +/* g_free()'ed on exit */ +gdouble *xpostab = NULL; +gdouble *ypostab = NULL; + +static gint xpostab_size = -1; /* if preview size change, do realloc */ +static gint ypostab_size = -1; + +static gboolean light_hit = FALSE; +static gboolean left_button_pressed = FALSE; +static guint preview_update_timer = 0; + + +/* Protos */ +/* ====== */ +static gboolean +interactive_preview_timer_callback ( gpointer data ); + +static void +compute_preview (gint startx, gint starty, gint w, gint h) +{ + gint xcnt, ycnt, f1, f2; + guchar r, g, b; + gdouble imagex, imagey; + gint32 index = 0; + GimpRGB color; + GimpRGB lightcheck, darkcheck; + GimpVector3 pos; + get_ray_func ray_func; + + if (xpostab_size != w) + { + if (xpostab) + { + g_free (xpostab); + xpostab = NULL; + } + } + + if (!xpostab) + { + xpostab = g_new (gdouble, w); + xpostab_size = w; + } + + if (ypostab_size != h) + { + if (ypostab) + { + g_free (ypostab); + ypostab = NULL; + } + } + + if (!ypostab) + { + ypostab = g_new (gdouble, h); + ypostab_size = h; + } + + for (xcnt = 0; xcnt < w; xcnt++) + xpostab[xcnt] = (gdouble) width *((gdouble) xcnt / (gdouble) w); + for (ycnt = 0; ycnt < h; ycnt++) + ypostab[ycnt] = (gdouble) height *((gdouble) ycnt / (gdouble) h); + + precompute_init (width, height); + + gimp_rgba_set (&lightcheck, + GIMP_CHECK_LIGHT, GIMP_CHECK_LIGHT, GIMP_CHECK_LIGHT, + 1.0); + gimp_rgba_set (&darkcheck, GIMP_CHECK_DARK, GIMP_CHECK_DARK, + GIMP_CHECK_DARK, 1.0); + + if (mapvals.bump_mapped == TRUE && mapvals.bumpmap_id != -1) + { + bumpmap_setup (mapvals.bumpmap_id); + } + + imagey = 0; + + if (mapvals.previewquality) + ray_func = get_ray_color; + else + ray_func = get_ray_color_no_bilinear; + + if (mapvals.env_mapped == TRUE && mapvals.envmap_id != -1) + { + envmap_setup (mapvals.envmap_id); + + if (mapvals.previewquality) + ray_func = get_ray_color_ref; + else + ray_func = get_ray_color_no_bilinear_ref; + } + + cairo_surface_flush (preview_surface); + + for (ycnt = 0; ycnt < PREVIEW_HEIGHT; ycnt++) + { + index = ycnt * preview_rgb_stride; + for (xcnt = 0; xcnt < PREVIEW_WIDTH; xcnt++) + { + if ((ycnt >= starty && ycnt < (starty + h)) && + (xcnt >= startx && xcnt < (startx + w))) + { + imagex = xpostab[xcnt - startx]; + imagey = ypostab[ycnt - starty]; + pos = int_to_posf (imagex, imagey); + + if (mapvals.bump_mapped == TRUE && + mapvals.bumpmap_id != -1 && + xcnt == startx) + { + pos_to_float (pos.x, pos.y, &imagex, &imagey); + precompute_normals (0, width, RINT (imagey)); + } + + color = (*ray_func) (&pos); + + if (color.a < 1.0) + { + f1 = ((xcnt % 32) < 16); + f2 = ((ycnt % 32) < 16); + f1 = f1 ^ f2; + + if (f1) + { + if (color.a == 0.0) + color = lightcheck; + else + gimp_rgb_composite (&color, + &lightcheck, + GIMP_RGB_COMPOSITE_BEHIND); + } + else + { + if (color.a == 0.0) + color = darkcheck; + else + gimp_rgb_composite (&color, + &darkcheck, + GIMP_RGB_COMPOSITE_BEHIND); + } + } + + gimp_rgb_get_uchar (&color, &r, &g, &b); + GIMP_CAIRO_RGB24_SET_PIXEL((preview_rgb_data + index), r, g, b); + index += 4; + imagex++; + } + else + { + preview_rgb_data[index++] = 200; + preview_rgb_data[index++] = 200; + preview_rgb_data[index++] = 200; + index++; + } + } + } + cairo_surface_mark_dirty (preview_surface); +} + +static void +compute_preview_rectangle (gint * xp, gint * yp, gint * wid, gint * heig) +{ + gdouble x, y, w, h; + + if (width >= height) + { + w = (PREVIEW_WIDTH - 50.0); + h = (gdouble) height *(w / (gdouble) width); + + x = (PREVIEW_WIDTH - w) / 2.0; + y = (PREVIEW_HEIGHT - h) / 2.0; + } + else + { + h = (PREVIEW_HEIGHT - 50.0); + w = (gdouble) width *(h / (gdouble) height); + x = (PREVIEW_WIDTH - w) / 2.0; + y = (PREVIEW_HEIGHT - h) / 2.0; + } + *xp = RINT (x); + *yp = RINT (y); + *wid = RINT (w); + *heig = RINT (h); +} + +/*************************************************/ +/* Check if the given position is within the */ +/* light marker. Return TRUE if so, FALSE if not */ +/*************************************************/ + +static gboolean +check_handle_hit (gint xpos, gint ypos) +{ + gint dx,dy,r; + gint k = mapvals.light_selected; + + dx = handle_xpos - xpos; + dy = handle_ypos - ypos; + + + if (mapvals.lightsource[k].type == POINT_LIGHT || + mapvals.lightsource[k].type == DIRECTIONAL_LIGHT) + { + r = sqrt (dx * dx + dy * dy) + 0.5; + if ((gint) r > 7) + { + return (FALSE); + } + else + { + return (TRUE); + } + } + return FALSE; +} + +/****************************************/ +/* Draw a light symbol */ +/****************************************/ + + +static void +draw_handles (void) +{ + gdouble dxpos, dypos; + gint startx, starty, pw, ph; + GimpVector3 viewpoint; + GimpVector3 light_position; + gint k = mapvals.light_selected; + + gfloat length; + gfloat delta_x = 0.0; + gfloat delta_y = 0.0; + + /* calculate handle position */ + compute_preview_rectangle (&startx, &starty, &pw, &ph); + switch (mapvals.lightsource[k].type) + { + case NO_LIGHT: + return; + case POINT_LIGHT: + case SPOT_LIGHT: + /* swap z to reverse light position */ + viewpoint = mapvals.viewpoint; + viewpoint.z = -viewpoint.z; + light_position = mapvals.lightsource[k].position; + gimp_vector_3d_to_2d (startx, starty, pw, ph, &dxpos, &dypos, + &viewpoint, &light_position); + handle_xpos = (gint) (dxpos + 0.5); + handle_ypos = (gint) (dypos + 0.5); + break; + case DIRECTIONAL_LIGHT: + light_position.x = light_position.y = 0.5; + light_position.z = 0; + viewpoint.z = -viewpoint.z; + gimp_vector_3d_to_2d (startx, starty, pw, ph, &dxpos, &dypos, + &viewpoint, &light_position); + length = PREVIEW_HEIGHT / 4; + delta_x = mapvals.lightsource[k].direction.x * length; + delta_y = mapvals.lightsource[k].direction.y * length; + handle_xpos = dxpos + delta_x; + handle_ypos = dypos + delta_y; + break; + } + + if (mapvals.lightsource[k].type != NO_LIGHT) + { + GdkColor color; + cairo_t *cr; + cr = gdk_cairo_create (gtk_widget_get_window (previewarea)); + + cairo_set_line_width (cr, 1.0); + + color.red = 0x0; + color.green = 0x4000; + color.blue = 0xFFFF; + gdk_cairo_set_source_color (cr, &color); + + /* draw circle at light position */ + switch (mapvals.lightsource[k].type) + { + case POINT_LIGHT: + case SPOT_LIGHT: + cairo_arc (cr, handle_xpos, handle_ypos, + LIGHT_SYMBOL_SIZE/2, 0, 2 * G_PI); + cairo_fill (cr); + break; + case DIRECTIONAL_LIGHT: + cairo_arc (cr, handle_xpos, handle_ypos, + LIGHT_SYMBOL_SIZE/2, 0, 2 * G_PI); + cairo_fill (cr); + cairo_move_to (cr, handle_xpos, handle_ypos); + cairo_line_to (cr, startx + pw/2, starty + ph/2); + cairo_stroke (cr); + break; + case NO_LIGHT: + break; + } + cairo_destroy (cr); + } +} + + +/*************************************************/ +/* Update light position given new screen coords */ +/*************************************************/ + +void +update_light (gint xpos, gint ypos) +{ + gint startx, starty, pw, ph; + GimpVector3 vp; + gint k = mapvals.light_selected; + + compute_preview_rectangle (&startx, &starty, &pw, &ph); + + vp = mapvals.viewpoint; + vp.z = -vp.z; + + switch (mapvals.lightsource[k].type) + { + case NO_LIGHT: + break; + case POINT_LIGHT: + case SPOT_LIGHT: + gimp_vector_2d_to_3d (startx, + starty, + pw, + ph, + xpos, ypos, &vp, &mapvals.lightsource[k].position); + break; + case DIRECTIONAL_LIGHT: + gimp_vector_2d_to_3d (startx, + starty, + pw, + ph, + xpos, ypos, &vp, &mapvals.lightsource[k].direction); + break; + } +} + + +/******************************************************************/ +/* Draw preview image. if DoCompute is TRUE then recompute image. */ +/******************************************************************/ + +void +preview_compute (void) +{ + GdkDisplay *display = gtk_widget_get_display (previewarea); + GdkCursor *cursor; + gint startx, starty, pw, ph; + + compute_preview_rectangle (&startx, &starty, &pw, &ph); + + cursor = gdk_cursor_new_for_display (display, GDK_WATCH); + + gdk_window_set_cursor (gtk_widget_get_window (previewarea), cursor); + gdk_cursor_unref (cursor); + + compute_preview (startx, starty, pw, ph); + cursor = gdk_cursor_new_for_display (display, GDK_HAND2); + gdk_window_set_cursor (gtk_widget_get_window (previewarea), cursor); + gdk_cursor_unref (cursor); + gdk_flush (); +} + + +/******************************/ +/* Preview area event handler */ +/******************************/ + +gboolean +preview_events (GtkWidget *area, + GdkEvent *event) +{ + switch (event->type) + { + case GDK_ENTER_NOTIFY: + break; + case GDK_LEAVE_NOTIFY: + break; + case GDK_BUTTON_PRESS: + light_hit = check_handle_hit (event->button.x, event->button.y); + left_button_pressed = TRUE; + break; + case GDK_BUTTON_RELEASE: + left_button_pressed = FALSE; + break; + case GDK_MOTION_NOTIFY: + if (left_button_pressed == TRUE && + light_hit == TRUE && + mapvals.interactive_preview == TRUE ) + { + gtk_widget_queue_draw (previewarea); + interactive_preview_callback(NULL); + update_light (event->motion.x, event->motion.y); + } + break; + default: + break; + } + + return FALSE; +} + +gboolean +preview_expose (GtkWidget *area, + GdkEventExpose *eevent) +{ + cairo_t *cr; + + cr = gdk_cairo_create (eevent->window); + + cairo_set_source_surface (cr, preview_surface, 0.0, 0.0); + + cairo_paint (cr); + + /* draw symbols if enabled in UI */ + if (mapvals.interactive_preview) + { + draw_handles (); + } + + cairo_destroy (cr); + + return FALSE; +} + +void +interactive_preview_callback (GtkWidget *widget) +{ + if (preview_update_timer != 0) + g_source_remove (preview_update_timer); + + preview_update_timer = g_timeout_add (100, + interactive_preview_timer_callback, + NULL); +} + +static gboolean +interactive_preview_timer_callback (gpointer data) +{ + gint k = mapvals.light_selected; + + mapvals.update_enabled = FALSE; /* disable apply_settings() */ + + gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_pos_x), + mapvals.lightsource[k].position.x); + gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_pos_y), + mapvals.lightsource[k].position.y); + gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_pos_z), + mapvals.lightsource[k].position.z); + gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_dir_x), + mapvals.lightsource[k].direction.x); + gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_dir_y), + mapvals.lightsource[k].direction.y); + gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_dir_z), + mapvals.lightsource[k].direction.z); + + mapvals.update_enabled = TRUE; + + preview_compute (); + + gtk_widget_queue_draw (previewarea); + + preview_update_timer = 0; + + return FALSE; +} diff --git a/plug-ins/lighting/lighting-preview.h b/plug-ins/lighting/lighting-preview.h new file mode 100644 index 0000000..881dacd --- /dev/null +++ b/plug-ins/lighting/lighting-preview.h @@ -0,0 +1,38 @@ +/* Lighting Effects - A plug-in for GIMP + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#ifndef __LIGHTING_PREVIEW_H__ +#define __LIGHTING_PREVIEW_H__ + +#define PREVIEW_WIDTH 200 +#define PREVIEW_HEIGHT 200 + +/* Externally visible variables */ + +extern gdouble *xpostab, *ypostab; + +/* Externally visible functions */ + +void preview_compute (void); +void interactive_preview_callback (GtkWidget *widget); +gboolean preview_events (GtkWidget *area, + GdkEvent *event); +gboolean preview_expose (GtkWidget *area, + GdkEventExpose *eevent); +void update_light (gint xpos, + gint ypos); + +#endif /* __LIGHTING_PREVIEW_H__ */ diff --git a/plug-ins/lighting/lighting-shade.c b/plug-ins/lighting/lighting-shade.c new file mode 100644 index 0000000..70443d9 --- /dev/null +++ b/plug-ins/lighting/lighting-shade.c @@ -0,0 +1,838 @@ +/*****************/ +/* Shading stuff */ +/*****************/ + +#include "config.h" + +#include <libgimp/gimp.h> + +#include "lighting-main.h" +#include "lighting-image.h" +#include "lighting-shade.h" + + +static GimpVector3 *triangle_normals[2] = { NULL, NULL }; +static GimpVector3 *vertex_normals[3] = { NULL, NULL, NULL }; +static gdouble *heights[3] = { NULL, NULL, NULL }; +static gdouble xstep, ystep; +static guchar *bumprow = NULL; + +static gint pre_w = -1; +static gint pre_h = -1; + +/*****************/ +/* Phong shading */ +/*****************/ + +static GimpRGB +phong_shade (GimpVector3 *position, + GimpVector3 *viewpoint, + GimpVector3 *normal, + GimpVector3 *lightposition, + GimpRGB *diff_col, + GimpRGB *light_col, + LightType light_type) +{ + GimpRGB diffuse_color, specular_color; + gdouble nl, rv, dist; + GimpVector3 l, v, n, lnormal, h; + + /* Compute ambient intensity */ + /* ========================= */ + + n = *normal; + + /* Compute (N*L) term of Phong's equation */ + /* ====================================== */ + + if (light_type == POINT_LIGHT) + gimp_vector3_sub (&l, lightposition, position); + else + { + l = *lightposition; + gimp_vector3_normalize (&l); + } + + dist = gimp_vector3_length (&l); + + if (dist != 0.0) + gimp_vector3_mul (&l, 1.0 / dist); + + nl = MAX (0., 2.0 * gimp_vector3_inner_product (&n, &l)); + + lnormal = l; + gimp_vector3_normalize (&lnormal); + + if (nl >= 0.0) + { + /* Compute (R*V)^alpha term of Phong's equation */ + /* ============================================ */ + + gimp_vector3_sub (&v, viewpoint, position); + gimp_vector3_normalize (&v); + + gimp_vector3_add (&h, &lnormal, &v); + gimp_vector3_normalize (&h); + + rv = MAX (0.01, gimp_vector3_inner_product (&n, &h)); + rv = pow (rv, mapvals.material.highlight); + rv *= nl; + + /* Compute diffuse and specular intensity contribution */ + /* =================================================== */ + + diffuse_color = *light_col; + gimp_rgb_multiply (&diffuse_color, mapvals.material.diffuse_int); + diffuse_color.r *= diff_col->r; + diffuse_color.g *= diff_col->g; + diffuse_color.b *= diff_col->b; + gimp_rgb_multiply (&diffuse_color, nl); + + specular_color = *light_col; + if (mapvals.material.metallic) /* for metals, specular color = diffuse color */ + { + specular_color.r *= diff_col->r; + specular_color.g *= diff_col->g; + specular_color.b *= diff_col->b; + } + gimp_rgb_multiply (&specular_color, mapvals.material.specular_ref); + gimp_rgb_multiply (&specular_color, rv); + + gimp_rgb_add (&diffuse_color, &specular_color); + gimp_rgb_clamp (&diffuse_color); + } + + gimp_rgb_clamp (&diffuse_color); + + return diffuse_color; +} + +void +precompute_init (gint w, + gint h) +{ + gint n; + gint bpp=1; + + xstep = 1.0 / (gdouble) width; + ystep = 1.0 / (gdouble) height; + + pre_w = w; + pre_h = h; + + for (n = 0; n < 3; n++) + { + if (vertex_normals[n] != NULL) + g_free (vertex_normals[n]); + + if (heights[n] != NULL) + g_free (heights[n]); + + heights[n] = g_new (gdouble, w); + vertex_normals[n] = g_new (GimpVector3, w); + } + + for (n = 0; n < 2; n++) + if (triangle_normals[n] != NULL) + g_free (triangle_normals[n]); + + g_clear_pointer (&bumprow, g_free); + + if (mapvals.bumpmap_id != -1) + { + bpp = gimp_drawable_bpp(mapvals.bumpmap_id); + } + + bumprow = g_new (guchar, w * bpp); + + triangle_normals[0] = g_new (GimpVector3, (w << 1) + 2); + triangle_normals[1] = g_new (GimpVector3, (w << 1) + 2); + + for (n = 0; n < (w << 1) + 1; n++) + { + gimp_vector3_set (&triangle_normals[0][n], 0.0, 0.0, 1.0); + gimp_vector3_set (&triangle_normals[1][n], 0.0, 0.0, 1.0); + } + + for (n = 0; n < w; n++) + { + gimp_vector3_set (&vertex_normals[0][n], 0.0, 0.0, 1.0); + gimp_vector3_set (&vertex_normals[1][n], 0.0, 0.0, 1.0); + gimp_vector3_set (&vertex_normals[2][n], 0.0, 0.0, 1.0); + heights[0][n] = 0.0; + heights[1][n] = 0.0; + heights[2][n] = 0.0; + } +} + + +/* Interpol linearly height[2] and triangle_normals[1] + * using the next row + */ +void +interpol_row (gint x1, + gint x2, + gint y) +{ + GimpVector3 p1, p2, p3; + gint n, i; + guchar *map = NULL; + gint bpp = 1; + guchar *bumprow1 = NULL; + guchar *bumprow2 = NULL; + + if (mapvals.bumpmap_id != -1) + { + bumpmap_setup (mapvals.bumpmap_id); + + bpp = babl_format_get_bytes_per_pixel (bump_format); + } + + bumprow1 = g_new0 (guchar, pre_w * bpp); + bumprow2 = g_new0 (guchar, pre_w * bpp); + + gegl_buffer_get (bump_buffer, GEGL_RECTANGLE (x1, y, x2 - x1, 1), 1.0, + bump_format, bumprow1, + GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); + + gegl_buffer_get (bump_buffer, GEGL_RECTANGLE (x1, y - 1, x2 - x1, 1), 1.0, + bump_format, bumprow2, + GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); + + if (mapvals.bumpmaptype > 0) + { + switch (mapvals.bumpmaptype) + { + case 1: + map = logmap; + break; + case 2: + map = sinemap; + break; + default: + map = spheremap; + break; + } + } + + for (n = 0; n < (x2 - x1); n++) + { + gdouble diff; + guchar mapval; + guchar mapval1, mapval2; + + if (bpp>1) + { + mapval1 = (guchar)((float)((bumprow1[n * bpp] +bumprow1[n * bpp +1] + bumprow1[n * bpp + 2])/3.0 )) ; + mapval2 = (guchar)((float)((bumprow2[n * bpp] +bumprow2[n * bpp +1] + bumprow2[n * bpp + 2])/3.0 )) ; + } + else + { + mapval1 = bumprow1[n * bpp]; + mapval2 = bumprow2[n * bpp]; + } + + diff = mapval1 - mapval2; + mapval = (guchar) CLAMP (mapval1 + diff, 0.0, 255.0); + + if (mapvals.bumpmaptype > 0) + { + heights[1][n] = (gdouble) mapvals.bumpmax * (gdouble) map[mapval1] / 255.0; + heights[2][n] = (gdouble) mapvals.bumpmax * (gdouble) map[mapval] / 255.0; + } + else + { + heights[1][n] = (gdouble) mapvals.bumpmax * (gdouble) mapval1 / 255.0; + heights[2][n] = (gdouble) mapvals.bumpmax * (gdouble) mapval / 255.0; + } + } + + i = 0; + for (n = 0; n < (x2 - x1 - 1); n++) + { + /* heights rows 1 and 2 are inverted */ + p1.x = 0.0; + p1.y = ystep; + p1.z = heights[1][n] - heights[2][n]; + + p2.x = xstep; + p2.y = ystep; + p2.z = heights[1][n+1] - heights[2][n]; + + p3.x = xstep; + p3.y = 0.0; + p3.z = heights[2][n+1] - heights[2][n]; + + triangle_normals[1][i] = gimp_vector3_cross_product (&p2, &p1); + triangle_normals[1][i+1] = gimp_vector3_cross_product (&p3, &p2); + + gimp_vector3_normalize (&triangle_normals[1][i]); + gimp_vector3_normalize (&triangle_normals[1][i+1]); + + i += 2; + } + + g_free (bumprow1); + g_free (bumprow2); +} + +/********************************************/ +/* Compute triangle and then vertex normals */ +/********************************************/ + + +void +precompute_normals (gint x1, + gint x2, + gint y) +{ + GimpVector3 *tmpv, p1, p2, p3, normal; + gdouble *tmpd; + gint n, i, nv; + guchar *map = NULL; + gint bpp = 1; + guchar mapval; + + + /* First, compute the heights */ + /* ========================== */ + + tmpv = triangle_normals[0]; + triangle_normals[0] = triangle_normals[1]; + triangle_normals[1] = tmpv; + + tmpv = vertex_normals[0]; + vertex_normals[0] = vertex_normals[1]; + vertex_normals[1] = vertex_normals[2]; + vertex_normals[2] = tmpv; + + tmpd = heights[0]; + heights[0] = heights[1]; + heights[1] = heights[2]; + heights[2] = tmpd; + + if (mapvals.bumpmap_id != -1) + { + bumpmap_setup (mapvals.bumpmap_id); + + bpp = babl_format_get_bytes_per_pixel (bump_format); + } + + gegl_buffer_get (bump_buffer, GEGL_RECTANGLE (x1, y, x2 - x1, 1), 1.0, + bump_format, bumprow, + GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); + + if (mapvals.bumpmaptype > 0) + { + switch (mapvals.bumpmaptype) + { + case 1: + map = logmap; + break; + case 2: + map = sinemap; + break; + default: + map = spheremap; + break; + } + + for (n = 0; n < (x2 - x1); n++) + { + if (bpp > 1) + { + mapval = (guchar)((float)((bumprow[n * bpp + 0] + + bumprow[n * bpp + 1] + + bumprow[n * bpp + 2]) /3.0)); + } + else + { + mapval = bumprow[n * bpp]; + } + + heights[2][n] = (gdouble) mapvals.bumpmax * (gdouble) map[mapval] / 255.0; + } + } + else + { + for (n = 0; n < (x2 - x1); n++) + { + if (bpp>1) + { + mapval = (guchar)((float)((bumprow[n * bpp + 0] + + bumprow[n * bpp + 1] + + bumprow[n * bpp + 2]) / 3.0)); + } + else + { + mapval = bumprow[n * bpp]; + } + + heights[2][n] = (gdouble) mapvals.bumpmax * (gdouble) mapval / 255.0; + } + } + + /* Compute triangle normals */ + /* ======================== */ + + i = 0; + for (n = 0; n < (x2 - x1 - 1); n++) + { + p1.x = 0.0; + p1.y = ystep; + p1.z = heights[2][n] - heights[1][n]; + + p2.x = xstep; + p2.y = ystep; + p2.z = heights[2][n+1] - heights[1][n]; + + p3.x = xstep; + p3.y = 0.0; + p3.z = heights[1][n+1] - heights[1][n]; + + triangle_normals[1][i] = gimp_vector3_cross_product (&p2, &p1); + triangle_normals[1][i+1] = gimp_vector3_cross_product (&p3, &p2); + + gimp_vector3_normalize (&triangle_normals[1][i]); + gimp_vector3_normalize (&triangle_normals[1][i+1]); + + i += 2; + } + + /* Compute vertex normals */ + /* ====================== */ + + i = 0; + gimp_vector3_set (&normal, 0.0, 0.0, 0.0); + + for (n = 0; n < (x2 - x1 - 1); n++) + { + nv = 0; + + if (n > 0) + { + if (y > 0) + { + gimp_vector3_add (&normal, &normal, &triangle_normals[0][i-1]); + gimp_vector3_add (&normal, &normal, &triangle_normals[0][i-2]); + nv += 2; + } + + if (y < pre_h) + { + gimp_vector3_add (&normal, &normal, &triangle_normals[1][i-1]); + nv++; + } + } + + if (n <pre_w) + { + if (y > 0) + { + gimp_vector3_add (&normal, &normal, &triangle_normals[0][i]); + gimp_vector3_add (&normal, &normal, &triangle_normals[0][i+1]); + nv += 2; + } + + if (y < pre_h) + { + gimp_vector3_add (&normal, &normal, &triangle_normals[1][i]); + gimp_vector3_add (&normal, &normal, &triangle_normals[1][i+1]); + nv += 2; + } + } + + gimp_vector3_mul (&normal, 1.0 / (gdouble) nv); + gimp_vector3_normalize (&normal); + vertex_normals[1][n] = normal; + + i += 2; + } +} + +/***********************************************************************/ +/* Compute the reflected ray given the normalized normal and ins. vec. */ +/***********************************************************************/ + +static GimpVector3 +compute_reflected_ray (GimpVector3 *normal, + GimpVector3 *view) +{ + GimpVector3 ref; + gdouble nl; + + nl = 2.0 * gimp_vector3_inner_product (normal, view); + + ref = *normal; + + gimp_vector3_mul (&ref, nl); + gimp_vector3_sub (&ref, &ref, view); + + return ref; +} + +/************************************************************************/ +/* Given the NorthPole, Equator and a third vector (normal) compute */ +/* the conversion from spherical coordinates to image space coordinates */ +/************************************************************************/ + +static void +sphere_to_image (GimpVector3 *normal, + gdouble *u, + gdouble *v) +{ + static gdouble alpha, fac; + static GimpVector3 cross_prod; + static GimpVector3 firstaxis = { 1.0, 0.0, 0.0 }; + static GimpVector3 secondaxis = { 0.0, 1.0, 0.0 }; + + alpha = acos (-gimp_vector3_inner_product (&secondaxis, normal)); + + *v = alpha / G_PI; + + if (*v==0.0 || *v==1.0) + { + *u = 0.0; + } + else + { + fac = gimp_vector3_inner_product (&firstaxis, normal) / sin (alpha); + + /* Make sure that we map to -1.0..1.0 (take care of rounding errors) */ + /* ================================================================= */ + + if (fac>1.0) + fac = 1.0; + else if (fac<-1.0) + fac = -1.0; + + *u = acos (fac) / (2.0 * G_PI); + + cross_prod = gimp_vector3_cross_product (&secondaxis, &firstaxis); + + if (gimp_vector3_inner_product (&cross_prod, normal) < 0.0) + *u = 1.0 - *u; + } +} + +/*********************************************************************/ +/* These routines computes the color of the surface at a given point */ +/*********************************************************************/ + +GimpRGB +get_ray_color (GimpVector3 *position) +{ + GimpRGB color; + GimpRGB color_int; + GimpRGB color_sum; + GimpRGB light_color; + gint x, f; + gdouble xf, yf; + GimpVector3 normal, *p; + gint k; + + pos_to_float (position->x, position->y, &xf, &yf); + + x = RINT (xf); + + if (mapvals.transparent_background && heights[1][x] == 0) + { + gimp_rgb_set_alpha (&color_sum, 0.0); + } + else + { + color = get_image_color (xf, yf, &f); + + color_sum = color; + gimp_rgb_multiply (&color_sum, mapvals.material.ambient_int); + + for (k = 0; k < NUM_LIGHTS; k++) + { + if (!mapvals.lightsource[k].active + || mapvals.lightsource[k].type == NO_LIGHT) + continue; + else if (mapvals.lightsource[k].type == POINT_LIGHT) + p = &mapvals.lightsource[k].position; + else + p = &mapvals.lightsource[k].direction; + + color_int = mapvals.lightsource[k].color; + gimp_rgb_multiply (&color_int, mapvals.lightsource[k].intensity); + + if (mapvals.bump_mapped == FALSE || mapvals.bumpmap_id == -1) + { + light_color = phong_shade (position, + &mapvals.viewpoint, + &mapvals.planenormal, + p, + &color, + &color_int, + mapvals.lightsource[k].type); + } + else + { + normal = vertex_normals[1][(gint) RINT (xf)]; + + light_color = phong_shade (position, + &mapvals.viewpoint, + &normal, + p, + &color, + &color_int, + mapvals.lightsource[k].type); + } + + gimp_rgb_add (&color_sum, &light_color); + } + } + + gimp_rgb_clamp (&color_sum); + return color_sum; +} + +GimpRGB +get_ray_color_ref (GimpVector3 *position) +{ + GimpRGB color_sum; + GimpRGB color_int; + GimpRGB light_color; + GimpRGB color, env_color; + gint x, f; + gdouble xf, yf; + GimpVector3 normal, *p, v, r; + gint k; + gdouble tmpval; + + pos_to_float (position->x, position->y, &xf, &yf); + + x = RINT (xf); + + if (mapvals.bump_mapped == FALSE || mapvals.bumpmap_id == -1) + normal = mapvals.planenormal; + else + normal = vertex_normals[1][(gint) RINT (xf)]; + gimp_vector3_normalize (&normal); + + if (mapvals.transparent_background && heights[1][x] == 0) + { + gimp_rgb_set_alpha (&color_sum, 0.0); + } + else + { + color = get_image_color (xf, yf, &f); + color_sum = color; + gimp_rgb_multiply (&color_sum, mapvals.material.ambient_int); + + for (k = 0; k < NUM_LIGHTS; k++) + { + p = &mapvals.lightsource[k].direction; + + if (!mapvals.lightsource[k].active + || mapvals.lightsource[k].type == NO_LIGHT) + continue; + else if (mapvals.lightsource[k].type == POINT_LIGHT) + p = &mapvals.lightsource[k].position; + + color_int = mapvals.lightsource[k].color; + gimp_rgb_multiply (&color_int, mapvals.lightsource[k].intensity); + + light_color = phong_shade (position, + &mapvals.viewpoint, + &normal, + p, + &color, + &color_int, + mapvals.lightsource[0].type); + } + + gimp_vector3_sub (&v, &mapvals.viewpoint, position); + gimp_vector3_normalize (&v); + + r = compute_reflected_ray (&normal, &v); + + /* Get color in the direction of r */ + /* =============================== */ + + sphere_to_image (&r, &xf, &yf); + env_color = peek_env_map (RINT (env_width * xf), + RINT (env_height * yf)); + + tmpval = mapvals.material.diffuse_int; + mapvals.material.diffuse_int = 0.; + + light_color = phong_shade (position, + &mapvals.viewpoint, + &normal, + &r, + &color, + &env_color, + DIRECTIONAL_LIGHT); + + mapvals.material.diffuse_int = tmpval; + + gimp_rgb_add (&color_sum, &light_color); + } + + gimp_rgb_clamp (&color_sum); + return color_sum; +} + +GimpRGB +get_ray_color_no_bilinear (GimpVector3 *position) +{ + GimpRGB color; + GimpRGB color_int; + GimpRGB color_sum; + GimpRGB light_color; + gint x; + gdouble xf, yf; + GimpVector3 normal, *p; + gint k; + + + pos_to_float (position->x, position->y, &xf, &yf); + + x = RINT (xf); + + if (mapvals.transparent_background && heights[1][x] == 0) + { + gimp_rgb_set_alpha (&color_sum, 0.0); + } + else + { + color = peek (x, RINT (yf)); + + color_sum = color; + gimp_rgb_multiply (&color_sum, mapvals.material.ambient_int); + + for (k = 0; k < NUM_LIGHTS; k++) + { + p = &mapvals.lightsource[k].direction; + + if (!mapvals.lightsource[k].active + || mapvals.lightsource[k].type == NO_LIGHT) + continue; + else if (mapvals.lightsource[k].type == POINT_LIGHT) + p = &mapvals.lightsource[k].position; + + color_int = mapvals.lightsource[k].color; + gimp_rgb_multiply (&color_int, mapvals.lightsource[k].intensity); + + if (mapvals.bump_mapped == FALSE || mapvals.bumpmap_id == -1) + { + light_color = phong_shade (position, + &mapvals.viewpoint, + &mapvals.planenormal, + p, + &color, + &color_int, + mapvals.lightsource[k].type); + } + else + { + normal = vertex_normals[1][x]; + + light_color = phong_shade (position, + &mapvals.viewpoint, + &normal, + p, + &color, + &color_int, + mapvals.lightsource[k].type); + } + + gimp_rgb_add (&color_sum, &light_color); + } + } + + gimp_rgb_clamp (&color_sum); + return color_sum; +} + +GimpRGB +get_ray_color_no_bilinear_ref (GimpVector3 *position) +{ + GimpRGB color_sum; + GimpRGB color_int; + GimpRGB light_color; + GimpRGB color, env_color; + gint x; + gdouble xf, yf; + GimpVector3 normal, *p, v, r; + gint k; + gdouble tmpval; + + pos_to_float (position->x, position->y, &xf, &yf); + + x = RINT (xf); + + if (mapvals.bump_mapped == FALSE || mapvals.bumpmap_id == -1) + normal = mapvals.planenormal; + else + normal = vertex_normals[1][(gint) RINT (xf)]; + gimp_vector3_normalize (&normal); + + if (mapvals.transparent_background && heights[1][x] == 0) + { + gimp_rgb_set_alpha (&color_sum, 0.0); + } + else + { + color = peek (RINT (xf), RINT (yf)); + color_sum = color; + gimp_rgb_multiply (&color_sum, mapvals.material.ambient_int); + + for (k = 0; k < NUM_LIGHTS; k++) + { + p = &mapvals.lightsource[k].direction; + + if (!mapvals.lightsource[k].active + || mapvals.lightsource[k].type == NO_LIGHT) + continue; + else if (mapvals.lightsource[k].type == POINT_LIGHT) + p = &mapvals.lightsource[k].position; + + color_int = mapvals.lightsource[k].color; + gimp_rgb_multiply (&color_int, mapvals.lightsource[k].intensity); + + light_color = phong_shade (position, + &mapvals.viewpoint, + &normal, + p, + &color, + &color_int, + mapvals.lightsource[0].type); + } + + gimp_vector3_sub (&v, &mapvals.viewpoint, position); + gimp_vector3_normalize (&v); + + r = compute_reflected_ray (&normal, &v); + + /* Get color in the direction of r */ + /* =============================== */ + + sphere_to_image (&r, &xf, &yf); + env_color = peek_env_map (RINT (env_width * xf), + RINT (env_height * yf)); + + tmpval = mapvals.material.diffuse_int; + mapvals.material.diffuse_int = 0.; + + light_color = phong_shade (position, + &mapvals.viewpoint, + &normal, + &r, + &color, + &env_color, + DIRECTIONAL_LIGHT); + + mapvals.material.diffuse_int = tmpval; + + gimp_rgb_add (&color_sum, &light_color); + } + + gimp_rgb_clamp (&color_sum); + + return color_sum; +} diff --git a/plug-ins/lighting/lighting-shade.h b/plug-ins/lighting/lighting-shade.h new file mode 100644 index 0000000..536df95 --- /dev/null +++ b/plug-ins/lighting/lighting-shade.h @@ -0,0 +1,20 @@ +#ifndef __LIGHTING_SHADE_H__ +#define __LIGHTING_SHADE_H__ + +typedef GimpRGB (* get_ray_func) (GimpVector3 *vector); + +GimpRGB get_ray_color (GimpVector3 *position); +GimpRGB get_ray_color_no_bilinear (GimpVector3 *position); +GimpRGB get_ray_color_ref (GimpVector3 *position); +GimpRGB get_ray_color_no_bilinear_ref (GimpVector3 *position); + +void precompute_init (gint w, + gint h); +void precompute_normals (gint x1, + gint x2, + gint y); +void interpol_row (gint x1, + gint x2, + gint y); + +#endif /* __LIGHTING_SHADE_H__ */ diff --git a/plug-ins/lighting/lighting-stock.c b/plug-ins/lighting/lighting-stock.c new file mode 100644 index 0000000..0cc99b6 --- /dev/null +++ b/plug-ins/lighting/lighting-stock.c @@ -0,0 +1,110 @@ +/* + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <gtk/gtk.h> + +#include "lighting-stock.h" + +#include "images/stock-pixbufs.h" + + +static GtkIconFactory *lighting_icon_factory = NULL; + +static GtkStockItem lighting_stock_items[] = +{ + { STOCK_INTENSITY_AMBIENT_LOW, NULL, 0, 0, NULL }, + { STOCK_INTENSITY_AMBIENT_HIGH, NULL, 0, 0, NULL }, + { STOCK_INTENSITY_DIFFUSE_LOW, NULL, 0, 0, NULL }, + { STOCK_INTENSITY_DIFFUSE_HIGH, NULL, 0, 0, NULL }, + { STOCK_REFLECTIVITY_DIFFUSE_LOW, NULL, 0, 0, NULL }, + { STOCK_REFLECTIVITY_DIFFUSE_HIGH, NULL, 0, 0, NULL }, + { STOCK_REFLECTIVITY_SPECULAR_LOW, NULL, 0, 0, NULL }, + { STOCK_REFLECTIVITY_SPECULAR_HIGH, NULL, 0, 0, NULL }, + { STOCK_REFLECTIVITY_HIGHLIGHT_LOW, NULL, 0, 0, NULL }, + { STOCK_REFLECTIVITY_HIGHLIGHT_HIGH, NULL, 0, 0, NULL } +}; + + +static void +add_stock_icon (const gchar *stock_id, + GtkIconSize size, + const guint8 *inline_data) +{ + GtkIconSource *source; + GtkIconSet *set; + GdkPixbuf *pixbuf; + + source = gtk_icon_source_new (); + + gtk_icon_source_set_size (source, size); + gtk_icon_source_set_size_wildcarded (source, FALSE); + + pixbuf = gdk_pixbuf_new_from_inline (-1, inline_data, FALSE, NULL); + + gtk_icon_source_set_pixbuf (source, pixbuf); + g_object_unref (pixbuf); + + set = gtk_icon_set_new (); + + gtk_icon_set_add_source (set, source); + gtk_icon_source_free (source); + + gtk_icon_factory_add (lighting_icon_factory, stock_id, set); + + gtk_icon_set_unref (set); +} + +void +lighting_stock_init (void) +{ + static gboolean initialized = FALSE; + + if (initialized) + return; + + lighting_icon_factory = gtk_icon_factory_new (); + + add_stock_icon (STOCK_INTENSITY_AMBIENT_LOW, GTK_ICON_SIZE_BUTTON, + stock_intensity_ambient_low); + add_stock_icon (STOCK_INTENSITY_AMBIENT_HIGH, GTK_ICON_SIZE_BUTTON, + stock_intensity_ambient_high); + add_stock_icon (STOCK_INTENSITY_DIFFUSE_LOW, GTK_ICON_SIZE_BUTTON, + stock_intensity_diffuse_low); + add_stock_icon (STOCK_INTENSITY_DIFFUSE_HIGH, GTK_ICON_SIZE_BUTTON, + stock_intensity_diffuse_high); + add_stock_icon (STOCK_REFLECTIVITY_DIFFUSE_LOW, GTK_ICON_SIZE_BUTTON, + stock_reflectivity_diffuse_low); + add_stock_icon (STOCK_REFLECTIVITY_DIFFUSE_HIGH, GTK_ICON_SIZE_BUTTON, + stock_reflectivity_diffuse_high); + add_stock_icon (STOCK_REFLECTIVITY_SPECULAR_LOW, GTK_ICON_SIZE_BUTTON, + stock_reflectivity_specular_low); + add_stock_icon (STOCK_REFLECTIVITY_SPECULAR_HIGH, GTK_ICON_SIZE_BUTTON, + stock_reflectivity_specular_high); + add_stock_icon (STOCK_REFLECTIVITY_HIGHLIGHT_LOW, GTK_ICON_SIZE_BUTTON, + stock_reflectivity_highlight_low); + add_stock_icon (STOCK_REFLECTIVITY_HIGHLIGHT_HIGH, GTK_ICON_SIZE_BUTTON, + stock_reflectivity_highlight_high); + + gtk_icon_factory_add_default (lighting_icon_factory); + + gtk_stock_add_static (lighting_stock_items, + G_N_ELEMENTS (lighting_stock_items)); + + initialized = TRUE; +} diff --git a/plug-ins/lighting/lighting-stock.h b/plug-ins/lighting/lighting-stock.h new file mode 100644 index 0000000..6447526 --- /dev/null +++ b/plug-ins/lighting/lighting-stock.h @@ -0,0 +1,37 @@ +/* + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#ifndef __LIGHTING_STOCK_H__ +#define __LIGHTING_STOCK_H__ + + +#define STOCK_INTENSITY_AMBIENT_LOW "intensity-ambient-low" +#define STOCK_INTENSITY_AMBIENT_HIGH "intensity-ambient-high" +#define STOCK_INTENSITY_DIFFUSE_LOW "intensity-diffuse-low" +#define STOCK_INTENSITY_DIFFUSE_HIGH "intensity-diffuse-high" +#define STOCK_REFLECTIVITY_DIFFUSE_LOW "reflectivity-diffuse-low" +#define STOCK_REFLECTIVITY_DIFFUSE_HIGH "reflectivity-diffuse-high" +#define STOCK_REFLECTIVITY_SPECULAR_LOW "reflectivity-specular-low" +#define STOCK_REFLECTIVITY_SPECULAR_HIGH "reflectivity-specular-high" +#define STOCK_REFLECTIVITY_HIGHLIGHT_LOW "reflectivity-highlight-low" +#define STOCK_REFLECTIVITY_HIGHLIGHT_HIGH "reflectivity-highlight-high" + + +void lighting_stock_init (void); + + +#endif /* __LIGHTING_STOCK_H__ */ diff --git a/plug-ins/lighting/lighting-ui.c b/plug-ins/lighting/lighting-ui.c new file mode 100644 index 0000000..86b4e12 --- /dev/null +++ b/plug-ins/lighting/lighting-ui.c @@ -0,0 +1,1557 @@ +/* Lighting Effects - A plug-in for GIMP + * + * Dialog creation and updaters, callbacks and event-handlers + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <string.h> +#include <errno.h> + +#include <glib/gstdio.h> + +#include <libgimp/gimp.h> +#include <libgimp/gimpui.h> + +#include "lighting-ui.h" +#include "lighting-main.h" +#include "lighting-image.h" +#include "lighting-apply.h" +#include "lighting-preview.h" +#include "lighting-stock.h" + +#include "libgimp/stdplugins-intl.h" + + +extern LightingValues mapvals; + +static GtkWidget *appwin = NULL; +static GtkNotebook *options_note_book = NULL; + +GtkWidget *previewarea = NULL; + +GtkWidget *spin_pos_x = NULL; +GtkWidget *spin_pos_y = NULL; +GtkWidget *spin_pos_z = NULL; +GtkWidget *spin_dir_x = NULL; +GtkWidget *spin_dir_y = NULL; +GtkWidget *spin_dir_z = NULL; + +static GtkWidget *colorbutton; +static GtkWidget *light_type_combo; +static GtkWidget *lightselect_combo; +static GtkWidget *spin_intensity; +static GtkWidget *isolate_button; +static gchar *lighting_effects_path = NULL; + +static void create_main_notebook (GtkWidget *container); + +static void toggle_update (GtkWidget *widget, + gpointer data); + +static void distance_update (GtkAdjustment *adj, + gpointer data); + +static gboolean bumpmap_constrain (gint32 image_id, + gint32 drawable_id, + gpointer data); +static gboolean envmap_constrain (gint32 image_id, + gint32 drawable_id, + gpointer data); +static void envmap_combo_callback (GtkWidget *widget, + gpointer data); +static void save_lighting_preset (GtkWidget *widget, + gpointer data); +static void save_preset_response (GtkFileChooser *chooser, + gint response_id, + gpointer data); +static void load_lighting_preset (GtkWidget *widget, + gpointer data); +static void load_preset_response (GtkFileChooser *chooser, + gint response_id, + gpointer data); +static void lightselect_callback (GimpIntComboBox *combo, + gpointer data); +static void apply_settings (GtkWidget *widget, + gpointer data); +static void isolate_selected_light (GtkWidget *widget, + gpointer data); + +static GtkWidget * spin_button_new (GtkAdjustment **adjustment, /* return value */ + gdouble value, + gdouble lower, + gdouble upper, + gdouble step_increment, + gdouble page_increment, + gdouble page_size, + gdouble climb_rate, + guint digits); + +/**********************/ +/* Std. toggle update */ +/**********************/ + +static void +toggle_update (GtkWidget *widget, + gpointer data) +{ + gimp_toggle_button_update (widget, data); + + preview_compute (); + gtk_widget_queue_draw (previewarea); +} + + +static void +distance_update (GtkAdjustment *adj, + gpointer data) +{ + mapvals.viewpoint.z = gtk_adjustment_get_value (adj); + + preview_compute (); + gtk_widget_queue_draw (previewarea); +} + + +/*****************************************/ +/* Main window light type menu callback. */ +/*****************************************/ + +static void +apply_settings (GtkWidget *widget, + gpointer data) +{ + gint valid; + gint type; + gint k = mapvals.light_selected; + + if (mapvals.update_enabled) + { + valid = gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (light_type_combo), + &type); + if (valid) + mapvals.lightsource[k].type = type; + + gimp_color_button_get_color (GIMP_COLOR_BUTTON (colorbutton), + &mapvals.lightsource[k].color); + + mapvals.lightsource[k].position.x + = gtk_spin_button_get_value (GTK_SPIN_BUTTON(spin_pos_x)); + mapvals.lightsource[k].position.y + = gtk_spin_button_get_value (GTK_SPIN_BUTTON(spin_pos_y)); + mapvals.lightsource[k].position.z + = gtk_spin_button_get_value (GTK_SPIN_BUTTON(spin_pos_z)); + + mapvals.lightsource[k].direction.x + = gtk_spin_button_get_value (GTK_SPIN_BUTTON(spin_dir_x)); + mapvals.lightsource[k].direction.y + = gtk_spin_button_get_value (GTK_SPIN_BUTTON(spin_dir_y)); + mapvals.lightsource[k].direction.z + = gtk_spin_button_get_value (GTK_SPIN_BUTTON(spin_dir_z)); + + mapvals.lightsource[k].intensity + = gtk_spin_button_get_value (GTK_SPIN_BUTTON(spin_intensity)); + + interactive_preview_callback(NULL); + } + + if (widget == light_type_combo) + { + switch (mapvals.lightsource[k].type) + { + case NO_LIGHT: + gtk_widget_set_sensitive (spin_pos_x, FALSE); + gtk_widget_set_sensitive (spin_pos_y, FALSE); + gtk_widget_set_sensitive (spin_pos_z, FALSE); + gtk_widget_set_sensitive (spin_dir_x, FALSE); + gtk_widget_set_sensitive (spin_dir_y, FALSE); + gtk_widget_set_sensitive (spin_dir_z, FALSE); + break; + case POINT_LIGHT: + gtk_widget_set_sensitive (spin_pos_x, TRUE); + gtk_widget_set_sensitive (spin_pos_y, TRUE); + gtk_widget_set_sensitive (spin_pos_z, TRUE); + gtk_widget_set_sensitive (spin_dir_x, FALSE); + gtk_widget_set_sensitive (spin_dir_y, FALSE); + gtk_widget_set_sensitive (spin_dir_z, FALSE); + break; + case DIRECTIONAL_LIGHT: + gtk_widget_set_sensitive (spin_pos_x, FALSE); + gtk_widget_set_sensitive (spin_pos_y, FALSE); + gtk_widget_set_sensitive (spin_pos_z, FALSE); + gtk_widget_set_sensitive (spin_dir_x, TRUE); + gtk_widget_set_sensitive (spin_dir_y, TRUE); + gtk_widget_set_sensitive (spin_dir_z, TRUE); + break; + default: + break; + } + } +} + +static void +mapmenu2_callback (GtkWidget *widget, + gpointer data) +{ + gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), (gint *) data); + + preview_compute (); + gtk_widget_queue_draw (previewarea); +} + +/******************************************/ +/* Main window "Preview!" button callback */ +/******************************************/ + +static void +preview_callback (GtkWidget *widget) +{ + preview_compute (); + gtk_widget_queue_draw (previewarea); +} + + + + +/*********************************************/ +/* Main window "-" (zoom in) button callback */ +/*********************************************/ +/* +static void +zoomout_callback (GtkWidget *widget) +{ + mapvals.preview_zoom_factor *= 0.5; + draw_preview_image (TRUE); +} +*/ +/*********************************************/ +/* Main window "+" (zoom out) button callback */ +/*********************************************/ +/* +static void +zoomin_callback (GtkWidget *widget) +{ + mapvals.preview_zoom_factor *= 2.0; + draw_preview_image (TRUE); +} +*/ +/**********************************************/ +/* Main window "Apply" button callback. */ +/* Render to GIMP image, close down and exit. */ +/**********************************************/ + +static gint +bumpmap_constrain (gint32 image_id, + gint32 drawable_id, + gpointer data) +{ + return ((gimp_drawable_width (drawable_id) == + gimp_drawable_width (mapvals.drawable_id)) && + (gimp_drawable_height (drawable_id) == + gimp_drawable_height (mapvals.drawable_id))); +} + +static gint +envmap_constrain (gint32 image_id, + gint32 drawable_id, + gpointer data) +{ + return (!gimp_drawable_is_gray (drawable_id) && + !gimp_drawable_has_alpha (drawable_id)); +} + +static void +envmap_combo_callback (GtkWidget *widget, + gpointer data) +{ + gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), + &mapvals.envmap_id); + + env_width = gimp_drawable_width (mapvals.envmap_id); + env_height = gimp_drawable_height (mapvals.envmap_id); +} + +/***********************/ +/* Dialog constructors */ +/***********************/ + +static GtkWidget * +create_options_page (void) +{ + GtkWidget *page; + GtkWidget *frame; + GtkWidget *vbox; + GtkWidget *toggle; + GtkWidget *table; + GtkAdjustment *adj; + + page = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12); + gtk_container_set_border_width (GTK_CONTAINER (page), 12); + + /* General options */ + + frame = gimp_frame_new (_("General Options")); + gtk_box_pack_start (GTK_BOX (page), frame, FALSE, FALSE, 0); + gtk_widget_show (frame); + + vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6); + gtk_container_add (GTK_CONTAINER (frame), vbox); + gtk_widget_show (vbox); + + toggle = gtk_check_button_new_with_mnemonic (_("T_ransparent background")); + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), + mapvals.transparent_background); + gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0); + g_signal_connect (toggle, "toggled", + G_CALLBACK (toggle_update), + &mapvals.transparent_background); + gtk_widget_show (toggle); + + gimp_help_set_help_data (toggle, + _("Make destination image transparent where bump " + "height is zero"),NULL); + + toggle = gtk_check_button_new_with_mnemonic (_("Cre_ate new image")); + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), + mapvals.create_new_image); + gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0); + g_signal_connect (toggle, "toggled", + G_CALLBACK (gimp_toggle_button_update), + &mapvals.create_new_image); + gtk_widget_show (toggle); + + gimp_help_set_help_data (toggle, + _("Create a new image when applying filter"), NULL); + + toggle = gtk_check_button_new_with_mnemonic (_("High _quality preview")); + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), + mapvals.previewquality); + gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0); + g_signal_connect (toggle, "toggled", + G_CALLBACK (toggle_update), + &mapvals.previewquality); + gtk_widget_show (toggle); + + gimp_help_set_help_data (toggle, + _("Enable/disable high quality preview"), NULL); + + table = gtk_table_new (1, 3, FALSE); + gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 12); + gtk_widget_show (table); + + adj = (GtkAdjustment *) + gimp_scale_entry_new (GTK_TABLE (table), 0, 0, + _("Distance:"), 100, 6, + mapvals.viewpoint.z, + 0.0, 2.0, 0.01, 0.05, + 3, TRUE, 0.0, 0.0, + "Distance of observer from surface", + "plug-in-lighting"); + g_signal_connect (adj, "value-changed", + G_CALLBACK (distance_update), + NULL); + + gtk_widget_show (page); + + return page; +} + +/******************************/ +/* Create light settings page */ +/******************************/ + +static GtkWidget * +create_light_page (void) +{ + GtkWidget *page; + GtkWidget *frame; + GtkWidget *table; + GtkWidget *button; + GtkAdjustment *adj; + GtkWidget *label; + gint k = mapvals.light_selected; + + page = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12); + gtk_container_set_border_width (GTK_CONTAINER (page), 12); + + frame = gimp_frame_new (_("Light Settings")); + gtk_box_pack_start (GTK_BOX (page), frame, FALSE, FALSE, 0); + gtk_widget_show (frame); + + table = gtk_table_new (8, 8, FALSE); + gtk_table_set_col_spacings (GTK_TABLE (table), 6); + gtk_table_set_row_spacings (GTK_TABLE (table), 6); + gtk_container_add (GTK_CONTAINER (frame), table); + gtk_widget_show (table); + + gtk_table_set_col_spacing (GTK_TABLE (table), 1, 12); + gtk_table_set_col_spacing (GTK_TABLE (table), 3, 12); + + lightselect_combo = gimp_int_combo_box_new (_("Light 1"), 0, + _("Light 2"), 1, + _("Light 3"), 2, + _("Light 4"), 3, + _("Light 5"), 4, + _("Light 6"), 5, + NULL); + gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (lightselect_combo), k); + gtk_table_attach_defaults (GTK_TABLE (table), lightselect_combo, 0, 2, 0, 1); + g_signal_connect (lightselect_combo, "changed", + G_CALLBACK (lightselect_callback), NULL); + gtk_widget_show (lightselect_combo); + + /* row labels */ + label = gtk_label_new (_("Type:")); + gtk_label_set_xalign (GTK_LABEL (label), 0.0); + gtk_table_attach_defaults (GTK_TABLE (table), label, 0, 1, 1, 2); + gtk_widget_show (label); + + label = gtk_label_new (_("Color:")); + gtk_label_set_xalign (GTK_LABEL (label), 0.0); + gtk_table_attach_defaults (GTK_TABLE (table), label, 0, 1, 2, 3); + gtk_widget_show (label); + + light_type_combo = + gimp_int_combo_box_new (C_("light-source", "None"), NO_LIGHT, + _("Directional"), DIRECTIONAL_LIGHT, + _("Point"), POINT_LIGHT, + /* _("Spot"), SPOT_LIGHT, */ + NULL); + gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (light_type_combo), + mapvals.lightsource[k].type); + gtk_table_attach_defaults (GTK_TABLE (table), light_type_combo, + 1, 2, 1, 2); + gtk_widget_show (light_type_combo); + + g_signal_connect (light_type_combo, "changed", + G_CALLBACK (apply_settings), + NULL); + + gimp_help_set_help_data (light_type_combo, + _("Type of light source to apply"), NULL); + + colorbutton = gimp_color_button_new (_("Select lightsource color"), + 64, 16, + &mapvals.lightsource[k].color, + GIMP_COLOR_AREA_FLAT); + gimp_color_button_set_update (GIMP_COLOR_BUTTON (colorbutton), TRUE); + gtk_widget_show (colorbutton); + gtk_table_attach_defaults (GTK_TABLE (table), + colorbutton, 1, 2, 2, 3); + + g_signal_connect (colorbutton, "color-changed", + G_CALLBACK (apply_settings), + NULL); + + gimp_help_set_help_data (colorbutton, + _("Set light source color"), NULL); + + + spin_intensity = spin_button_new (&adj, + mapvals.lightsource[k].intensity, + 0.0, 100.0, + 0.01, 0.1, 0.0, 0.0, 2); + gimp_table_attach_aligned (GTK_TABLE (table), 0, 3, + _("_Intensity:"), 0.0, 0.5, + spin_intensity, 1, TRUE); + + g_signal_connect (adj, "value-changed", + G_CALLBACK (apply_settings), + NULL); + + gimp_help_set_help_data (spin_intensity, + _("Light intensity"), NULL); + + + label = gtk_label_new (_("Position")); + gtk_label_set_xalign (GTK_LABEL (label), 0.0); + gtk_table_attach_defaults (GTK_TABLE (table), label, 3, 4, 0, 1); + gtk_widget_show (label); + + spin_pos_x = spin_button_new (&adj, + mapvals.lightsource[k].position.x, + -100.0, 100.0, + 0.1, 1.0, 0.0, 0.0, 2); + gimp_table_attach_aligned (GTK_TABLE (table), 2, 1, + _("_X:"), 0.0, 0.5, + spin_pos_x, 1, TRUE); + + g_signal_connect (adj, "value-changed", + G_CALLBACK (apply_settings), + NULL); + + gimp_help_set_help_data (spin_pos_x, + _("Light source X position in XYZ space"), NULL); + + spin_pos_y = spin_button_new (&adj, + mapvals.lightsource[k].position.y, + -100.0, 100.0, + 0.1, 1.0, 0.0, 0.0, 2); + gimp_table_attach_aligned (GTK_TABLE (table), 2, 2, + _("_Y:"), 0.0, 0.5, + spin_pos_y, 1, TRUE); + + g_signal_connect (adj, "value-changed", + G_CALLBACK (apply_settings), + NULL); + + gimp_help_set_help_data (spin_pos_y, + _("Light source Y position in XYZ space"), NULL); + + spin_pos_z = spin_button_new (&adj, + mapvals.lightsource[k].position.z, + -100.0, 100.0, + 0.1, 1.0, 0.0, 0.0, 2); + gimp_table_attach_aligned (GTK_TABLE (table), 2, 3, + _("_Z:"), 0.0, 0.5, + spin_pos_z, 1, TRUE); + + g_signal_connect (adj, "value-changed", + G_CALLBACK (apply_settings), + NULL); + + gimp_help_set_help_data (spin_pos_z, + _("Light source Z position in XYZ space"), NULL); + + + label = gtk_label_new (_("Direction")); + gtk_label_set_xalign (GTK_LABEL (label), 0.0); + gtk_table_attach_defaults (GTK_TABLE (table), label, 5, 6, 0, 1); + gtk_widget_show (label); + + spin_dir_x = spin_button_new (&adj, + mapvals.lightsource[k].direction.x, + -100.0, 100.0, 0.1, 1.0, 0.0, 0.0, 2); + gimp_table_attach_aligned (GTK_TABLE (table), 4, 1, + _("X:"), 0.0, 0.5, + spin_dir_x, 1, TRUE); + + g_signal_connect (adj, "value-changed", + G_CALLBACK (apply_settings), + NULL); + + gimp_help_set_help_data (spin_dir_x, + _("Light source X direction in XYZ space"), NULL); + + spin_dir_y = spin_button_new (&adj, + mapvals.lightsource[k].direction.y, + -100.0, 100.0, 0.1, 1.0, 0.0, 0.0, 2); + gimp_table_attach_aligned (GTK_TABLE (table), 4, 2, + _("Y:"), 0.0, 0.5, + spin_dir_y, 1, TRUE); + + g_signal_connect (adj, "value-changed", + G_CALLBACK (apply_settings), + NULL); + + gimp_help_set_help_data (spin_dir_y, + _("Light source Y direction in XYZ space"), NULL); + + spin_dir_z = spin_button_new (&adj, + mapvals.lightsource[k].direction.z, + -100.0, 100.0, 0.1, 1.0, 0.0, 0.0, 2); + gimp_table_attach_aligned (GTK_TABLE (table), 4, 3, + _("Z:"), 0.0, 0.5, + spin_dir_z, 1, TRUE); + + g_signal_connect (adj, "value-changed", + G_CALLBACK (apply_settings), + NULL); + + gimp_help_set_help_data (spin_dir_z, + _("Light source Z direction in XYZ space"), + NULL); + + isolate_button = gtk_check_button_new_with_mnemonic (_("I_solate")); + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (isolate_button), + mapvals.light_isolated); + g_signal_connect (isolate_button, "toggled", + G_CALLBACK (isolate_selected_light), + NULL); + gtk_table_attach_defaults (GTK_TABLE (table), isolate_button, 0, 1, 5, 6); + gtk_widget_show (isolate_button); + + label = gtk_label_new (_("Lighting preset:")); + gtk_label_set_xalign (GTK_LABEL (label), 1.0); + gtk_table_set_row_spacing (GTK_TABLE (table), 5, 12); + gtk_table_attach_defaults (GTK_TABLE (table), label, 0, 2, 6, 7); + gtk_widget_show (label); + + button = gtk_button_new_with_mnemonic (_("_Save")); + gtk_table_attach_defaults (GTK_TABLE (table), button, 2, 4, 6, 7); + g_signal_connect (button, "clicked", + G_CALLBACK (save_lighting_preset), + NULL); + gtk_widget_show (button); + + button = gtk_button_new_with_mnemonic (_("_Open")); + gtk_table_attach_defaults (GTK_TABLE (table), button, 4, 6, 6, 7); + g_signal_connect (button, "clicked", + G_CALLBACK (load_lighting_preset), + NULL); + gtk_widget_show (button); + + gtk_widget_show (page); + + return page; +} + +/*********************************/ +/* Create material settings page */ +/*********************************/ + +static GtkWidget * +create_material_page (void) +{ + GtkSizeGroup *group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL); + GtkWidget *page; + GtkWidget *frame; + GtkWidget *table; + GtkWidget *label; + GtkWidget *hbox; + GtkWidget *spinbutton; + GtkWidget *image; + GtkWidget *button; + GtkAdjustment *adj; + + page = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12); + gtk_container_set_border_width (GTK_CONTAINER (page), 12); + + frame = gimp_frame_new (_("Material Properties")); + gtk_box_pack_start (GTK_BOX (page), frame, FALSE, FALSE, 0); + gtk_widget_show (frame); + + hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6); + gtk_container_add (GTK_CONTAINER (frame), hbox); + gtk_widget_show (hbox); + + table = gtk_table_new (5, 4, FALSE); + gtk_table_set_row_spacings (GTK_TABLE (table), 6); + gtk_box_pack_start (GTK_BOX (hbox), table, FALSE, FALSE, 0); + gtk_widget_show (table); + + /* Ambient intensity */ + + image = gtk_image_new_from_stock (STOCK_INTENSITY_AMBIENT_LOW, + GTK_ICON_SIZE_BUTTON); + label = gimp_table_attach_aligned (GTK_TABLE (table), 0, 0, + _("_Glowing:"), 0.0, 0.5, + image, 1, FALSE); + gtk_size_group_add_widget (group, label); + + spinbutton = spin_button_new (&adj, mapvals.material.ambient_int, + 0, G_MAXFLOAT, 0.01, 0.1, 0.0, 0.0, 2); + gtk_table_attach (GTK_TABLE (table), spinbutton, 2, 3, 0, 1, + GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0); + gtk_widget_show (spinbutton); + + g_signal_connect (adj, "value-changed", + G_CALLBACK (gimp_double_adjustment_update), + &mapvals.material.ambient_int); + g_signal_connect (adj, "value-changed", + G_CALLBACK (interactive_preview_callback), + NULL); + + gtk_label_set_mnemonic_widget (GTK_LABEL (label), spinbutton); + gimp_help_set_help_data (spinbutton, + _("Amount of original color to show where no " + "direct light falls"), NULL); + + image = gtk_image_new_from_stock (STOCK_INTENSITY_AMBIENT_HIGH, + GTK_ICON_SIZE_BUTTON); + gtk_table_attach (GTK_TABLE (table), image, 3, 4, 0, 1, + GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0); + gtk_widget_show (image); + + /* Diffuse intensity */ + + image = gtk_image_new_from_stock (STOCK_INTENSITY_DIFFUSE_LOW, + GTK_ICON_SIZE_BUTTON); + label = gimp_table_attach_aligned (GTK_TABLE (table), 0, 1, + _("_Bright:"), 0.0, 0.5, + image, 1, FALSE); + gtk_size_group_add_widget (group, label); + + spinbutton = spin_button_new (&adj, mapvals.material.diffuse_int, + 0, G_MAXFLOAT, 0.01, 0.1, 0.0, 0.0, 2); + gtk_table_attach (GTK_TABLE (table), spinbutton, 2, 3, 1, 2, + GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0); + gtk_widget_show (spinbutton); + + g_signal_connect (adj, "value-changed", + G_CALLBACK (gimp_double_adjustment_update), + &mapvals.material.diffuse_int); + g_signal_connect (adj, "value-changed", + G_CALLBACK (interactive_preview_callback), + NULL); + + gtk_label_set_mnemonic_widget (GTK_LABEL (label), spinbutton); + gimp_help_set_help_data (spinbutton, + _("Intensity of original color when lit by a light " + "source"), NULL); + + image = gtk_image_new_from_stock (STOCK_INTENSITY_DIFFUSE_HIGH, + GTK_ICON_SIZE_BUTTON); + gtk_table_attach (GTK_TABLE (table), image, 3, 4, 1, 2, + GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0); + gtk_widget_show (image); + + /* Specular reflection */ + + image = gtk_image_new_from_stock (STOCK_REFLECTIVITY_SPECULAR_LOW, + GTK_ICON_SIZE_BUTTON); + label = gimp_table_attach_aligned (GTK_TABLE (table), 0, 2, + _("_Shiny:"), 0.0, 0.5, + image, 1, FALSE); + gtk_size_group_add_widget (group, label); + + spinbutton = spin_button_new (&adj, mapvals.material.specular_ref, + 0, G_MAXFLOAT, 0.01, 0.1, 0.0, 0.0, 2); + gtk_table_attach (GTK_TABLE (table), spinbutton, 2, 3, 2, 3, + GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0); + gtk_widget_show (spinbutton); + + g_signal_connect (adj, "value-changed", + G_CALLBACK (gimp_double_adjustment_update), + &mapvals.material.specular_ref); + g_signal_connect (adj, "value-changed", + G_CALLBACK (interactive_preview_callback), + NULL); + + gtk_label_set_mnemonic_widget (GTK_LABEL (label), spinbutton); + gimp_help_set_help_data (spinbutton, + _("Controls how intense the highlights will be"), + NULL); + + image = gtk_image_new_from_stock (STOCK_REFLECTIVITY_SPECULAR_HIGH, + GTK_ICON_SIZE_BUTTON); + gtk_table_attach (GTK_TABLE (table), image, 3, 4, 2, 3, + GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0); + gtk_widget_show (image); + + /* Highlight */ + image = gtk_image_new_from_stock (STOCK_REFLECTIVITY_HIGHLIGHT_LOW, + GTK_ICON_SIZE_BUTTON); + label = gimp_table_attach_aligned (GTK_TABLE (table), 0, 3, + _("_Polished:"), 0.0, 0.5, + image, 1, FALSE); + gtk_size_group_add_widget (group, label); + + spinbutton = spin_button_new (&adj, mapvals.material.highlight, + 0, G_MAXFLOAT, 0.01, 0.1, 0.0, 0.0, 2); + gtk_table_attach (GTK_TABLE (table), spinbutton, 2, 3, 3, 4, + GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0); + gtk_widget_show (spinbutton); + + g_signal_connect (adj, "value-changed", + G_CALLBACK (gimp_double_adjustment_update), + &mapvals.material.highlight); + g_signal_connect (adj, "value-changed", + G_CALLBACK (interactive_preview_callback), + NULL); + + gtk_label_set_mnemonic_widget (GTK_LABEL (label), spinbutton); + gimp_help_set_help_data (spinbutton, + _("Higher values makes the highlights more focused"), + NULL); + + image = gtk_image_new_from_stock (STOCK_REFLECTIVITY_HIGHLIGHT_HIGH, + GTK_ICON_SIZE_BUTTON); + gtk_table_attach (GTK_TABLE (table), image, 3, 4, 3, 4, + GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0); + gtk_widget_show (image); + + /* Metallic */ + button = gtk_check_button_new_with_mnemonic (_("_Metallic")); + gtk_table_attach (GTK_TABLE (table), button, 0, 3, 4, 5, + GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0); + gtk_widget_show (button); + + g_signal_connect (button, "toggled", + G_CALLBACK (gimp_toggle_button_update), + &mapvals.material.metallic); + g_signal_connect (button, "toggled", + G_CALLBACK (interactive_preview_callback), + NULL); + + gtk_widget_show (page); + + return page; +} + +/* Create Bump mapping page */ + +static GtkWidget * +create_bump_page (void) +{ + GtkWidget *page; + GtkWidget *toggle; + GtkWidget *frame; + GtkWidget *table; + GtkWidget *combo; + GtkWidget *spinbutton; + GtkAdjustment *adj; + + page = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12); + gtk_container_set_border_width (GTK_CONTAINER (page), 12); + + frame = gimp_frame_new (NULL); + gtk_box_pack_start (GTK_BOX (page), frame, FALSE, FALSE, 0); + gtk_widget_show (frame); + + toggle = gtk_check_button_new_with_mnemonic (_("E_nable bump mapping")); + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), + mapvals.bump_mapped); + gtk_frame_set_label_widget (GTK_FRAME (frame), toggle); + gtk_widget_show (toggle); + + g_signal_connect (toggle, "toggled", + G_CALLBACK (gimp_toggle_button_update), + &mapvals.bump_mapped); + g_signal_connect (toggle, "toggled", + G_CALLBACK (interactive_preview_callback), + NULL); + + gimp_help_set_help_data (toggle, + _("Enable/disable bump-mapping (image depth)"), + NULL); + + table = gtk_table_new (6, 2, FALSE); + gtk_table_set_col_spacings (GTK_TABLE (table), 6); + gtk_table_set_row_spacings (GTK_TABLE (table), 6); + gtk_container_add (GTK_CONTAINER (frame), table); + gtk_widget_show (table); + + g_object_bind_property (toggle, "active", + table, "sensitive", + G_BINDING_SYNC_CREATE); + + combo = gimp_drawable_combo_box_new (bumpmap_constrain, NULL); + gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (combo), mapvals.bumpmap_id, + G_CALLBACK (gimp_int_combo_box_get_active), + &mapvals.bumpmap_id); + + g_signal_connect (combo, "changed", + G_CALLBACK (mapmenu2_callback), + &mapvals.bumpmap_id); + + gimp_table_attach_aligned (GTK_TABLE (table), 0, 0, + _("Bumpm_ap image:"), 0.0, 0.5, + combo, 1, FALSE); + + combo = gimp_int_combo_box_new (_("Linear"), LINEAR_MAP, + _("Logarithmic"), LOGARITHMIC_MAP, + _("Sinusoidal"), SINUSOIDAL_MAP, + _("Spherical"), SPHERICAL_MAP, + NULL); + gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (combo), + mapvals.bumpmaptype); + + g_signal_connect (combo, "changed", + G_CALLBACK (mapmenu2_callback), + &mapvals.bumpmaptype); + + gimp_table_attach_aligned (GTK_TABLE (table), 0, 1, + _("Cu_rve:"), 0.0, 0.5, combo, 1, FALSE); + + spinbutton = spin_button_new (&adj, mapvals.bumpmax, + 0, G_MAXFLOAT, 0.01, 0.1, 0.0, 0.0, 2); + gimp_table_attach_aligned (GTK_TABLE (table), 0, 2, + _("Ma_ximum height:"), 0.0, 0.5, + spinbutton, 1, TRUE); + g_signal_connect (adj, "value-changed", + G_CALLBACK (gimp_double_adjustment_update), + &mapvals.bumpmax); + g_signal_connect (adj, "value-changed", + G_CALLBACK (interactive_preview_callback), + NULL); + + gimp_help_set_help_data (spinbutton, + _("Maximum height for bumps"), + NULL); + + gtk_widget_show (page); + + return page; +} + +static GtkWidget * +create_environment_page (void) +{ + GtkWidget *page; + GtkWidget *toggle; + GtkWidget *table; + GtkWidget *frame; + GtkWidget *combo; + + page = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12); + gtk_container_set_border_width (GTK_CONTAINER (page), 12); + + frame = gimp_frame_new (NULL); + gtk_box_pack_start (GTK_BOX (page), frame, FALSE, FALSE, 0); + gtk_widget_show (frame); + + toggle = gtk_check_button_new_with_mnemonic (_("E_nable environment mapping")); + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), + mapvals.env_mapped); + gtk_frame_set_label_widget (GTK_FRAME (frame), toggle); + gtk_widget_show (toggle); + + g_signal_connect (toggle, "toggled", + G_CALLBACK (gimp_toggle_button_update), + &mapvals.env_mapped); + g_signal_connect (toggle, "toggled", + G_CALLBACK (interactive_preview_callback), + NULL); + + gimp_help_set_help_data (toggle, + _("Enable/disable environment-mapping (reflection)"), + NULL); + + table = gtk_table_new (3, 2, FALSE); + gtk_table_set_col_spacings (GTK_TABLE (table), 6); + gtk_table_set_row_spacings (GTK_TABLE (table), 6); + gtk_container_add (GTK_CONTAINER (frame), table); + gtk_widget_show (table); + + g_object_bind_property (toggle, "active", + table, "sensitive", + G_BINDING_SYNC_CREATE); + + combo = gimp_drawable_combo_box_new (envmap_constrain, NULL); + gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (combo), mapvals.envmap_id, + G_CALLBACK (envmap_combo_callback), + NULL); + gimp_table_attach_aligned (GTK_TABLE (table), 0, 0, + _("En_vironment image:"), 0.0, 0.5, + combo, 1, FALSE); + + gimp_help_set_help_data (combo, _("Environment image to use"), NULL); + + gtk_widget_show (page); + + return page; +} + +/*****************************/ +/* Create notebook and pages */ +/*****************************/ + +static void +create_main_notebook (GtkWidget *container) +{ + GtkWidget *page; + + options_note_book = GTK_NOTEBOOK (gtk_notebook_new ()); + gtk_container_add (GTK_CONTAINER (container), + GTK_WIDGET (options_note_book)); + + page = create_options_page (); + gtk_notebook_append_page (options_note_book, page, + gtk_label_new_with_mnemonic (_("Op_tions"))); + + page = create_light_page (); + gtk_notebook_append_page (options_note_book, page, + gtk_label_new_with_mnemonic (_("_Light"))); + + page = create_material_page (); + gtk_notebook_append_page (options_note_book, page, + gtk_label_new_with_mnemonic (_("_Material"))); + + page = create_bump_page (); + gtk_notebook_append_page (options_note_book, page, + gtk_label_new_with_mnemonic (_("_Bump Map"))); + + page = create_environment_page (); + gtk_notebook_append_page (options_note_book, page, + gtk_label_new_with_mnemonic (_("_Environment Map"))); + + /* + if (mapvals.bump_mapped == TRUE) + { + bump_page = create_bump_page (); + bump_page_pos = g_list_length (options_note_book->children); + gtk_notebook_append_page (options_note_book, bump_page, + gtk_label_new (_("Bumpmap"))); + } + + if (mapvals.env_mapped == TRUE) + { + env_page = create_environment_page (); + env_page_pos = g_list_length (options_note_book->children); + gtk_notebook_append_page (options_note_book, env_page, + gtk_label_new (_("Environment"))); + } + */ + gtk_widget_show (GTK_WIDGET (options_note_book)); +} + +/********************************/ +/* Create and show main dialog. */ +/********************************/ + +gboolean +main_dialog (gint32 drawable_id) +{ + GtkWidget *main_hbox; + GtkWidget *vbox; + GtkWidget *hbox; + GtkWidget *frame; + GtkWidget *button; + GtkWidget *toggle; + gchar *path; + gboolean run = FALSE; + + /* + GtkWidget *image; + */ + + gimp_ui_init (PLUG_IN_BINARY, FALSE); + + path = gimp_gimprc_query ("lighting-effects-path"); + if (path) + { + lighting_effects_path = g_filename_from_utf8 (path, -1, NULL, NULL, NULL); + g_free (path); + } + + lighting_stock_init (); + + appwin = gimp_dialog_new (_("Lighting Effects"), PLUG_IN_ROLE, + NULL, 0, + gimp_standard_help_func, PLUG_IN_PROC, + + _("_Cancel"), GTK_RESPONSE_CANCEL, + _("_OK"), GTK_RESPONSE_OK, + + NULL); + + gtk_dialog_set_alternative_button_order (GTK_DIALOG (appwin), + GTK_RESPONSE_OK, + GTK_RESPONSE_CANCEL, + -1); + + gimp_window_set_transient (GTK_WINDOW (appwin)); + + main_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12); + gtk_container_set_border_width (GTK_CONTAINER (main_hbox), 12); + gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (appwin))), + main_hbox, FALSE, FALSE, 0); + gtk_widget_show (main_hbox); + + /* Create the Preview */ + /* ================== */ + + vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6); + gtk_box_pack_start (GTK_BOX (main_hbox), vbox, FALSE, FALSE, 0); + gtk_widget_show (vbox); + + /* Add preview widget and various buttons to the first part */ + /* ======================================================== */ + + frame = gtk_frame_new (NULL); + gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); + gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0); + gtk_widget_show (frame); + + gtk_widget_realize (appwin); + + previewarea = gtk_drawing_area_new (); + gtk_widget_set_size_request (previewarea, PREVIEW_WIDTH, PREVIEW_HEIGHT); + gtk_widget_set_events (previewarea, (GDK_EXPOSURE_MASK | + GDK_BUTTON1_MOTION_MASK | + GDK_BUTTON_PRESS_MASK | + GDK_BUTTON_RELEASE_MASK)); + g_signal_connect (previewarea, "event", + G_CALLBACK (preview_events), + previewarea); + g_signal_connect (previewarea, "expose-event", + G_CALLBACK (preview_expose), + previewarea); + gtk_container_add (GTK_CONTAINER (frame), previewarea); + gtk_widget_show (previewarea); + + /* create preview options, frame and vbox */ + hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6); + gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0); + gtk_widget_show (hbox); + + button = gtk_button_new_with_mnemonic (_("_Update")); + gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0); + g_signal_connect (button, "clicked", + G_CALLBACK (preview_callback), + NULL); + gtk_widget_show (button); + + gimp_help_set_help_data (button, _("Recompute preview image"), NULL); + + toggle = gtk_check_button_new_with_mnemonic (_("I_nteractive")); + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), + mapvals.interactive_preview); + gtk_box_pack_start (GTK_BOX (hbox), toggle, TRUE, TRUE, 0); + g_signal_connect (toggle, "toggled", + G_CALLBACK (gimp_toggle_button_update), + &mapvals.interactive_preview); + g_signal_connect (toggle, "toggled", + G_CALLBACK (interactive_preview_callback), + NULL); + + gtk_widget_show (toggle); + + gimp_help_set_help_data (toggle, + _("Enable/disable real time preview of changes"), + NULL); + + create_main_notebook (main_hbox); + + gtk_widget_show (appwin); + + { + GdkCursor *cursor; + + cursor = gdk_cursor_new_for_display (gtk_widget_get_display (previewarea), + GDK_HAND2); + gdk_window_set_cursor (gtk_widget_get_window (previewarea), cursor); + gdk_cursor_unref (cursor); + } + + if (image_setup (drawable_id, TRUE)) + preview_compute (); + + if (gimp_dialog_run (GIMP_DIALOG (appwin)) == GTK_RESPONSE_OK) + run = TRUE; + + if (preview_rgb_data != NULL) + g_free (preview_rgb_data); + + if (preview_surface != NULL) + cairo_surface_destroy (preview_surface); + + gtk_widget_destroy (appwin); + + return run; +} + + +static void +save_lighting_preset (GtkWidget *widget, + gpointer data) +{ + static GtkWidget *window = NULL; + + if (! window) + { + window = + gtk_file_chooser_dialog_new (_("Save Lighting Preset"), + GTK_WINDOW (appwin), + GTK_FILE_CHOOSER_ACTION_SAVE, + + _("_Cancel"), GTK_RESPONSE_CANCEL, + _("_Save"), GTK_RESPONSE_OK, + + NULL); + + gtk_dialog_set_default_response (GTK_DIALOG (window), GTK_RESPONSE_OK); + gtk_dialog_set_alternative_button_order (GTK_DIALOG (window), + GTK_RESPONSE_OK, + GTK_RESPONSE_CANCEL, + -1); + + gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (window), + TRUE); + + g_signal_connect (window, "destroy", + G_CALLBACK (gtk_widget_destroyed), + &window); + g_signal_connect (window, "response", + G_CALLBACK (save_preset_response), + NULL); + } + + if (lighting_effects_path) + { + GList *list; + gchar *dir; + + list = gimp_path_parse (lighting_effects_path, 256, FALSE, NULL); + dir = gimp_path_get_user_writable_dir (list); + gimp_path_free (list); + + if (! dir) + dir = g_strdup (gimp_directory ()); + + gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (window), dir); + + g_free (dir); + } + else + { + gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (window), + g_get_tmp_dir ()); + } + + gtk_window_present (GTK_WINDOW (window)); +} + + +static void +save_preset_response (GtkFileChooser *chooser, + gint response_id, + gpointer data) +{ + FILE *fp; + gint num_lights = 0; + gint k; + LightSettings *source; + gchar buffer1[G_ASCII_DTOSTR_BUF_SIZE]; + gchar buffer2[G_ASCII_DTOSTR_BUF_SIZE]; + gchar buffer3[G_ASCII_DTOSTR_BUF_SIZE]; + gint blen = G_ASCII_DTOSTR_BUF_SIZE; + + if (response_id == GTK_RESPONSE_OK) + { + gchar *filename = gtk_file_chooser_get_filename (chooser); + + fp = g_fopen (filename, "wb"); + + if (!fp) + { + g_message (_("Could not open '%s' for writing: %s"), + filename, g_strerror (errno)); + } + else + { + for (k = 0; k < NUM_LIGHTS; k++) + if (mapvals.lightsource[k].type != NO_LIGHT) + ++num_lights; + + fprintf (fp, "Number of lights: %d\n", num_lights); + + for (k = 0; k < NUM_LIGHTS; k++) + if (mapvals.lightsource[k].type != NO_LIGHT) + { + source = &mapvals.lightsource[k]; + + switch (source->type) + { + case POINT_LIGHT: + fprintf (fp, "Type: Point\n"); + break; + case DIRECTIONAL_LIGHT: + fprintf (fp, "Type: Directional\n"); + break; + case SPOT_LIGHT: + fprintf (fp, "Type: Spot\n"); + break; + default: + g_warning ("Unknown light type: %d", + mapvals.lightsource[k].type); + continue; + } + + fprintf (fp, "Position: %s %s %s\n", + g_ascii_dtostr (buffer1, blen, source->position.x), + g_ascii_dtostr (buffer2, blen, source->position.y), + g_ascii_dtostr (buffer3, blen, source->position.z)); + + fprintf (fp, "Direction: %s %s %s\n", + g_ascii_dtostr (buffer1, blen, source->direction.x), + g_ascii_dtostr (buffer2, blen, source->direction.y), + g_ascii_dtostr (buffer3, blen, source->direction.z)); + + fprintf (fp, "Color: %s %s %s\n", + g_ascii_dtostr (buffer1, blen, source->color.r), + g_ascii_dtostr (buffer2, blen, source->color.g), + g_ascii_dtostr (buffer3, blen, source->color.b)); + + fprintf (fp, "Intensity: %s\n", + g_ascii_dtostr (buffer1, blen, source->intensity)); + } + + fclose (fp); + } + + g_free (filename); + } + + gtk_widget_destroy (GTK_WIDGET (chooser)); +} + +static void +load_lighting_preset (GtkWidget *widget, + gpointer data) +{ + static GtkWidget *window = NULL; + + if (! window) + { + window = + gtk_file_chooser_dialog_new (_("Load Lighting Preset"), + GTK_WINDOW (appwin), + GTK_FILE_CHOOSER_ACTION_OPEN, + + _("_Cancel"), GTK_RESPONSE_CANCEL, + _("_Open"), GTK_RESPONSE_OK, + + NULL); + + gtk_dialog_set_default_response (GTK_DIALOG (window), GTK_RESPONSE_OK); + gtk_dialog_set_alternative_button_order (GTK_DIALOG (window), + GTK_RESPONSE_OK, + GTK_RESPONSE_CANCEL, + -1); + + g_signal_connect (window, "destroy", + G_CALLBACK (gtk_widget_destroyed), + &window); + g_signal_connect (window, "response", + G_CALLBACK (load_preset_response), + NULL); + } + + if (lighting_effects_path) + { + GList *list; + gchar *dir; + + list = gimp_path_parse (lighting_effects_path, 256, FALSE, NULL); + dir = gimp_path_get_user_writable_dir (list); + gimp_path_free (list); + + if (! dir) + dir = g_strdup (gimp_directory ()); + + gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (window), dir); + + g_free (dir); + } + else + { + gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (window), + g_get_tmp_dir ()); + } + + + gtk_window_present (GTK_WINDOW (window)); +} + + +static void +load_preset_response (GtkFileChooser *chooser, + gint response_id, + gpointer data) +{ + FILE *fp; + gint num_lights; + gint k; + LightSettings *source; + gchar buffer1[G_ASCII_DTOSTR_BUF_SIZE]; + gchar buffer2[G_ASCII_DTOSTR_BUF_SIZE]; + gchar buffer3[G_ASCII_DTOSTR_BUF_SIZE]; + gchar type_label[21]; + gchar *endptr; + gchar fmt_str[32]; + + if (response_id == GTK_RESPONSE_OK) + { + gchar *filename = gtk_file_chooser_get_filename (chooser); + + fp = g_fopen (filename, "rb"); + + if (!fp) + { + g_message (_("Could not open '%s' for reading: %s"), + filename, g_strerror (errno)); + } + else + { + fscanf (fp, "Number of lights: %d", &num_lights); + + /* initialize lights to off */ + for (k = 0; k < NUM_LIGHTS; k++) + mapvals.lightsource[k].type = NO_LIGHT; + + for (k = 0; k < num_lights; k++) + { + source = &mapvals.lightsource[k]; + + fscanf (fp, " Type: %20s", type_label); + + if (!strcmp (type_label, "Point")) + source->type = POINT_LIGHT; + else if (!strcmp (type_label, "Directional")) + source->type = DIRECTIONAL_LIGHT; + else if (!strcmp (type_label, "Spot")) + source->type = SPOT_LIGHT; + else + { + g_warning ("Unknown light type: %s", type_label); + fclose (fp); + return; + } + + snprintf (fmt_str, sizeof (fmt_str), + " Position: %%%" G_GSIZE_FORMAT "s %%%" G_GSIZE_FORMAT "s %%%" G_GSIZE_FORMAT "s", + sizeof (buffer1) - 1, + sizeof (buffer2) - 1, + sizeof (buffer3) - 1); + fscanf (fp, fmt_str, buffer1, buffer2, buffer3); + source->position.x = g_ascii_strtod (buffer1, &endptr); + source->position.y = g_ascii_strtod (buffer2, &endptr); + source->position.z = g_ascii_strtod (buffer3, &endptr); + + snprintf (fmt_str, sizeof (fmt_str), + " Direction: %%%" G_GSIZE_FORMAT "s %%%" G_GSIZE_FORMAT "s %%%" G_GSIZE_FORMAT "s", + sizeof (buffer1) - 1, + sizeof (buffer2) - 1, + sizeof (buffer3) - 1); + fscanf (fp, fmt_str, buffer1, buffer2, buffer3); + source->direction.x = g_ascii_strtod (buffer1, &endptr); + source->direction.y = g_ascii_strtod (buffer2, &endptr); + source->direction.z = g_ascii_strtod (buffer3, &endptr); + + snprintf (fmt_str, sizeof (fmt_str), + " Color: %%%" G_GSIZE_FORMAT "s %%%" G_GSIZE_FORMAT "s %%%" G_GSIZE_FORMAT "s", + sizeof (buffer1) - 1, + sizeof (buffer2) - 1, + sizeof (buffer3) - 1); + fscanf (fp, fmt_str, buffer1, buffer2, buffer3); + source->color.r = g_ascii_strtod (buffer1, &endptr); + source->color.g = g_ascii_strtod (buffer2, &endptr); + source->color.b = g_ascii_strtod (buffer3, &endptr); + source->color.a = 1.0; + + snprintf (fmt_str, sizeof (fmt_str), + " Intensity: %%%" G_GSIZE_FORMAT "s", + sizeof (buffer1) - 1); + fscanf (fp, fmt_str, buffer1); + source->intensity = g_ascii_strtod (buffer1, &endptr); + + } + + fclose (fp); + } + + g_free (filename); + + lightselect_callback (GIMP_INT_COMBO_BOX (lightselect_combo), NULL); + } + + gtk_widget_destroy (GTK_WIDGET (chooser)); + interactive_preview_callback (GTK_WIDGET (chooser)); +} + + +static void +lightselect_callback (GimpIntComboBox *combo, + gpointer data) +{ + gint valid; + gint j, k; + + valid = gimp_int_combo_box_get_active (combo, &k); + + if (valid) + { + mapvals.update_enabled = FALSE; /* prevent apply_settings() */ + + mapvals.light_selected = k; + gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (light_type_combo), + mapvals.lightsource[k].type); + gimp_color_button_set_color (GIMP_COLOR_BUTTON (colorbutton), + &mapvals.lightsource[k].color); + gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_pos_x), + mapvals.lightsource[k].position.x); + gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_pos_y), + mapvals.lightsource[k].position.y); + gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_pos_z), + mapvals.lightsource[k].position.z); + gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_dir_x), + mapvals.lightsource[k].direction.x); + gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_dir_y), + mapvals.lightsource[k].direction.y); + gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_dir_z), + mapvals.lightsource[k].direction.z); + gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_intensity), + mapvals.lightsource[k].intensity); + + mapvals.update_enabled = TRUE; + + /* if we are isolating a light, need to switch */ + if (mapvals.light_isolated) + { + for (j = 0; j < NUM_LIGHTS; j++) + if (j == mapvals.light_selected) + mapvals.lightsource[j].active = TRUE; + else + mapvals.lightsource[j].active = FALSE; + } + + interactive_preview_callback (NULL); + } +} + +static void +isolate_selected_light (GtkWidget *widget, + gpointer data) +{ + gint k; + + if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget))) + { + mapvals.light_isolated = TRUE; + + for (k = 0; k < NUM_LIGHTS; k++) + if (k == mapvals.light_selected) + mapvals.lightsource[k].active = TRUE; + else + mapvals.lightsource[k].active = FALSE; + } + else + { + mapvals.light_isolated = FALSE; + + for (k = 0; k < NUM_LIGHTS; k++) + mapvals.lightsource[k].active = TRUE; + } + + interactive_preview_callback (NULL); +} + +static GtkWidget * +spin_button_new (GtkAdjustment **adjustment, /* return value */ + gdouble value, + gdouble lower, + gdouble upper, + gdouble step_increment, + gdouble page_increment, + gdouble page_size, + gdouble climb_rate, + guint digits) +{ + GtkWidget *spinbutton; + + *adjustment = (GtkAdjustment *) + gtk_adjustment_new (value, lower, upper, + step_increment, page_increment, 0); + + spinbutton = gimp_spin_button_new (GTK_ADJUSTMENT (*adjustment), + climb_rate, digits); + + gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE); + + return spinbutton; +} diff --git a/plug-ins/lighting/lighting-ui.h b/plug-ins/lighting/lighting-ui.h new file mode 100644 index 0000000..ad0ffba --- /dev/null +++ b/plug-ins/lighting/lighting-ui.h @@ -0,0 +1,21 @@ +#ifndef __LIGHTING_UI_H__ +#define __LIGHTING_UI_H__ + +/* Externally visible variables */ +/* ============================ */ + +extern GtkWidget *previewarea; + +extern GtkWidget *spin_pos_x; +extern GtkWidget *spin_pos_y; +extern GtkWidget *spin_pos_z; +extern GtkWidget *spin_dir_x; +extern GtkWidget *spin_dir_y; +extern GtkWidget *spin_dir_z; + +/* Externally visible functions */ +/* ============================ */ + +gboolean main_dialog (gint32 drawable_id); + +#endif /* __LIGHTING_UI_H__ */ |
