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+/* 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 ()