/* * jigsaw - a plug-in for GIMP * * Copyright (C) Nigel Wetten * * 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 . * * Contact info: nigel@cs.nwu.edu * * Version: 1.0.0 * * Version: 1.0.1 * * tim coppefield [timecop@japan.co.jp] * * Added dynamic preview mode. * * Damn, this plugin is the tightest piece of code I ever seen. * I wish all filters in the plugins operated on guchar *buffer * of the entire image :) sweet stuff. * */ #include "config.h" #include #include #include #include "libgimp/stdplugins-intl.h" #define PLUG_IN_PROC "plug-in-jigsaw" #define PLUG_IN_BINARY "jigsaw" #define PLUG_IN_ROLE "gimp-jigsaw" typedef enum { BEZIER_1, BEZIER_2 } style_t; typedef enum { LEFT, RIGHT, UP, DOWN } bump_t; static void query (void); static void run (const gchar *name, gint nparams, const GimpParam *param, gint *nreturn_vals, GimpParam **return_vals); static void jigsaw (guint32 drawable_id, GimpPreview *preview); static void jigsaw_preview (gpointer drawable_id, GimpPreview *preview); static gboolean jigsaw_dialog (guint32 drawable_id); static void draw_jigsaw (guchar *buffer, gint bufsize, gint width, gint height, gint bytes, gboolean preview_mode); static void draw_vertical_border (guchar *buffer, gint bufsize, gint width, gint height, gint bytes, gint x_offset, gint ytiles, gint blend_lines, gdouble blend_amount); static void draw_horizontal_border (guchar *buffer, gint bufsize, gint width, gint bytes, gint y_offset, gint xtiles, gint blend_lines, gdouble blend_amount); static void draw_vertical_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint px[2], gint py[2]); static void draw_horizontal_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint px[2], gint py[2]); static void darken_vertical_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint *px, gint *py, gdouble delta); static void lighten_vertical_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint *px, gint *py, gdouble delta); static void darken_horizontal_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint *px, gint *py, gdouble delta); static void lighten_horizontal_line(guchar *buffer, gint bufsize, gint width, gint bytes, gint *px, gint *py, gdouble delta); static void draw_right_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint x_offset, gint curve_start_offset, gint steps); static void draw_left_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint x_offset, gint curve_start_offset, gint steps); static void draw_up_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint y_offset, gint curve_start_offset, gint steps); static void draw_down_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint y_offset, gint curve_start_offset, gint steps); static void darken_right_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint x_offset, gint curve_start_offset, gint steps, gdouble delta, gint counter); static void lighten_right_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint x_offset, gint curve_start_offset, gint steps, gdouble delta, gint counter); static void darken_left_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint x_offset, gint curve_start_offset, gint steps, gdouble delta, gint counter); static void lighten_left_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint x_offset, gint curve_start_offset, gint steps, gdouble delta, gint counter); static void darken_up_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint y_offset, gint curve_start_offest, gint steps, gdouble delta, gint counter); static void lighten_up_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint y_offset, gint curve_start_offset, gint steps, gdouble delta, gint counter); static void darken_down_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint y_offset, gint curve_start_offset, gint steps, gdouble delta, gint counter); static void lighten_down_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint y_offset, gint curve_start_offset, gint steps, gdouble delta, gint counter); static void generate_grid (gint width, gint height, gint xtiles, gint ytiles, gint *x, gint *y); static void generate_bezier (gint px[4], gint py[4], gint steps, gint *cachex, gint *cachey); static void malloc_cache (void); static void free_cache (void); static void init_right_bump (gint width, gint height); static void init_left_bump (gint width, gint height); static void init_up_bump (gint width, gint height); static void init_down_bump (gint width, gint height); static void draw_bezier_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint steps, gint *cx, gint *cy); static void darken_bezier_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint x_offset, gint y_offset, gint steps, gint *cx, gint *cy, gdouble delta); static void lighten_bezier_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint x_offset, gint y_offset, gint steps, gint *cx, gint *cy, gdouble delta); static void draw_bezier_vertical_border (guchar *buffer, gint bufsize, gint width, gint height, gint bytes, gint x_offset, gint xtiles, gint ytiles, gint blend_lines, gdouble blend_amount, gint steps); static void draw_bezier_horizontal_border (guchar *buffer, gint bufsize, gint width, gint height, gint bytes, gint x_offset, gint xtiles, gint ytiles, gint blend_lines, gdouble blend_amount, gint steps); static void check_config (gint width, gint height); #define XFACTOR2 0.0833 #define XFACTOR3 0.2083 #define XFACTOR4 0.2500 #define XFACTOR5 0.2500 #define XFACTOR6 0.2083 #define XFACTOR7 0.0833 #define YFACTOR2 0.1000 #define YFACTOR3 0.2200 #define YFACTOR4 0.1000 #define YFACTOR5 0.1000 #define YFACTOR6 0.4666 #define YFACTOR7 0.1000 #define YFACTOR8 0.2000 #define MAX_VALUE 255 #define MIN_VALUE 0 #define DELTA 0.15 #define BLACK_R 30 #define BLACK_G 30 #define BLACK_B 30 #define WALL_XFACTOR2 0.05 #define WALL_XFACTOR3 0.05 #define WALL_YFACTOR2 0.05 #define WALL_YFACTOR3 0.05 #define WALL_XCONS2 0.2 #define WALL_XCONS3 0.3 #define WALL_YCONS2 0.2 #define WALL_YCONS3 0.3 #define FUDGE 1.2 #define MIN_XTILES 1 #define MAX_XTILES 20 #define MIN_YTILES 1 #define MAX_YTILES 20 #define MIN_BLEND_LINES 0 #define MAX_BLEND_LINES 10 #define MIN_BLEND_AMOUNT 0 #define MAX_BLEND_AMOUNT 1.0 #define SCALE_WIDTH 200 #define DRAW_POINT(buffer, bufsize, index) \ do \ { \ if ((index) >= 0 && (index) + 2 < (bufsize)) \ { \ buffer[(index) + 0] = BLACK_R; \ buffer[(index) + 1] = BLACK_G; \ buffer[(index) + 2] = BLACK_B; \ } \ } \ while (0) #define DARKEN_POINT(buffer, bufsize, index, delta, temp) \ do \ { \ if ((index) >= 0 && (index) + 2 < (bufsize)) \ { \ temp = MAX (buffer[(index) + 0] * (1.0 - (delta)), MIN_VALUE); \ buffer[(index) + 0] = temp; \ temp = MAX (buffer[(index) + 1] * (1.0 - (delta)), MIN_VALUE); \ buffer[(index) + 1] = temp; \ temp = MAX (buffer[(index) + 2] * (1.0 - (delta)), MIN_VALUE); \ buffer[(index) + 2] = temp; \ } \ } \ while (0) #define LIGHTEN_POINT(buffer, bufsize, index, delta, temp) \ do \ { \ if ((index) >= 0 && (index) + 2 < (bufsize)) \ { \ temp = MIN (buffer[(index) + 0] * (1.0 + (delta)), MAX_VALUE); \ buffer[(index) + 0] = temp; \ temp = MIN (buffer[(index) + 1] * (1.0 + (delta)), MAX_VALUE); \ buffer[(index) + 1] = temp; \ temp = MIN (buffer[(index) + 2] * (1.0 + (delta)), MAX_VALUE); \ buffer[(index) + 2] = temp; \ } \ } \ while (0) const GimpPlugInInfo PLUG_IN_INFO = { NULL, NULL, query, run }; struct config_tag { gint x; gint y; style_t style; gint blend_lines; gdouble blend_amount; }; typedef struct config_tag config_t; static config_t config = { 5, 5, BEZIER_1, 3, 0.5 }; struct globals_tag { gint *cachex1[4]; gint *cachex2[4]; gint *cachey1[4]; gint *cachey2[4]; gint steps[4]; gint *gridx; gint *gridy; gint **blend_outer_cachex1[4]; gint **blend_outer_cachex2[4]; gint **blend_outer_cachey1[4]; gint **blend_outer_cachey2[4]; gint **blend_inner_cachex1[4]; gint **blend_inner_cachex2[4]; gint **blend_inner_cachey1[4]; gint **blend_inner_cachey2[4]; }; typedef struct globals_tag globals_t; static globals_t globals; MAIN () 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_INT32, "x", "Number of tiles across > 0" }, { GIMP_PDB_INT32, "y", "Number of tiles down > 0" }, { GIMP_PDB_INT32, "style", "The style/shape of the jigsaw puzzle { 0, 1 }" }, { GIMP_PDB_INT32, "blend-lines", "Number of lines for shading bevels >= 0" }, { GIMP_PDB_FLOAT, "blend-amount", "The power of the light highlights 0 =< 5" } }; gimp_install_procedure (PLUG_IN_PROC, N_("Add a jigsaw-puzzle pattern to the image"), "Jigsaw puzzle look", "Nigel Wetten", "Nigel Wetten", "May 2000", N_("_Jigsaw..."), "RGB*", GIMP_PLUGIN, G_N_ELEMENTS (args), 0, args, NULL); gimp_plugin_menu_register (PLUG_IN_PROC, "/Filters/Render/Pattern"); } static void run (const gchar *name, gint nparams, const GimpParam *param, gint *nreturn_vals, GimpParam **return_vals) { static GimpParam values[1]; GimpRunMode run_mode; guint32 drawable_id; GimpPDBStatusType status = GIMP_PDB_SUCCESS; INIT_I18N (); gegl_init (NULL, NULL); run_mode = param[0].data.d_int32; drawable_id = param[2].data.d_drawable; switch (run_mode) { case GIMP_RUN_NONINTERACTIVE: if (nparams == 8) { config.x = param[3].data.d_int32; config.y = param[4].data.d_int32; config.style = param[5].data.d_int32; config.blend_lines = param[6].data.d_int32; config.blend_amount = param[7].data.d_float; jigsaw (drawable_id, NULL); } else { status = GIMP_PDB_CALLING_ERROR; } break; case GIMP_RUN_INTERACTIVE: gimp_get_data (PLUG_IN_PROC, &config); if (! jigsaw_dialog (drawable_id)) { status = GIMP_PDB_CANCEL; break; } gimp_progress_init (_("Assembling jigsaw")); jigsaw (drawable_id, NULL); gimp_set_data (PLUG_IN_PROC, &config, sizeof(config_t)); gimp_displays_flush (); break; case GIMP_RUN_WITH_LAST_VALS: gimp_get_data (PLUG_IN_PROC, &config); jigsaw (drawable_id, NULL); gimp_displays_flush (); } /* switch */ *nreturn_vals = 1; *return_vals = values; values[0].type = GIMP_PDB_STATUS; values[0].data.d_status = status; } static void jigsaw (guint32 drawable_id, GimpPreview *preview) { GeglBuffer *gegl_buffer = NULL; const Babl *format = NULL; guchar *buffer; gint width; gint height; gint bytes; gint buffer_size; if (preview) { gimp_preview_get_size (preview, &width, &height); buffer = gimp_drawable_get_thumbnail_data (drawable_id, &width, &height, &bytes); buffer_size = bytes * width * height; } else { gegl_buffer = gimp_drawable_get_buffer (drawable_id); width = gimp_drawable_width (drawable_id); height = gimp_drawable_height (drawable_id); if (gimp_drawable_has_alpha (drawable_id)) format = babl_format ("R'G'B'A u8"); else format = babl_format ("R'G'B' u8"); bytes = babl_format_get_bytes_per_pixel (format); /* setup image buffer */ buffer_size = bytes * width * height; buffer = g_new (guchar, buffer_size); gegl_buffer_get (gegl_buffer, GEGL_RECTANGLE (0, 0, width, height), 1.0, format, buffer, GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); g_object_unref (gegl_buffer); } check_config (width, height); globals.steps[LEFT] = globals.steps[RIGHT] = globals.steps[UP] = globals.steps[DOWN] = (config.x < config.y) ? (width / config.x * 2) : (height / config.y * 2); malloc_cache (); draw_jigsaw (buffer, buffer_size, width, height, bytes, preview != NULL); free_cache (); /* cleanup */ if (preview) { gimp_preview_draw_buffer (preview, buffer, width * bytes); } else { gegl_buffer = gimp_drawable_get_shadow_buffer (drawable_id); gegl_buffer_set (gegl_buffer, GEGL_RECTANGLE (0, 0, width, height), 0, format, buffer, GEGL_AUTO_ROWSTRIDE); g_object_unref (gegl_buffer); gimp_drawable_merge_shadow (drawable_id, TRUE); gimp_drawable_update (drawable_id, 0, 0, width, height); } g_free (buffer); } static void jigsaw_preview (gpointer drawable_id, GimpPreview *preview) { jigsaw (GPOINTER_TO_INT (drawable_id), preview); } static void generate_bezier (gint px[4], gint py[4], gint steps, gint *cachex, gint *cachey) { gdouble t = 0.0; gdouble sigma = 1.0 / steps; gint i; for (i = 0; i < steps; i++) { gdouble t2, t3, x, y, t_1; t += sigma; t2 = t * t; t3 = t2 * t; t_1 = 1 - t; x = t_1 * t_1 * t_1 * px[0] + 3 * t * t_1 * t_1 * px[1] + 3 * t2 * t_1 * px[2] + t3 * px[3]; y = t_1 * t_1 * t_1 * py[0] + 3 * t * t_1 * t_1 * py[1] + 3 * t2 * t_1 * py[2] + t3 * py[3]; cachex[i] = (gint) (x + 0.2); cachey[i] = (gint) (y + 0.2); } /* for */ } static void draw_jigsaw (guchar *buffer, gint bufsize, gint width, gint height, gint bytes, gboolean preview_mode) { gint i; gint *x, *y; gint xtiles = config.x; gint ytiles = config.y; gint xlines = xtiles - 1; gint ylines = ytiles - 1; gint blend_lines = config.blend_lines; gdouble blend_amount = config.blend_amount; gint steps = globals.steps[RIGHT]; style_t style = config.style; gint progress_total = xlines + ylines - 1; g_return_if_fail (buffer != NULL); globals.gridx = g_new (gint, xtiles); globals.gridy = g_new (gint, ytiles); x = globals.gridx; y = globals.gridy; generate_grid (width, height, xtiles, ytiles, globals.gridx, globals.gridy); init_right_bump (width, height); init_left_bump (width, height); init_up_bump (width, height); init_down_bump (width, height); if (style == BEZIER_1) { for (i = 0; i < xlines; i++) { draw_vertical_border (buffer, bufsize, width, height, bytes, x[i], ytiles, blend_lines, blend_amount); if (!preview_mode) gimp_progress_update ((gdouble) i / (gdouble) progress_total); } for (i = 0; i < ylines; i++) { draw_horizontal_border (buffer, bufsize, width, bytes, y[i], xtiles, blend_lines, blend_amount); if (!preview_mode) gimp_progress_update ((gdouble) (i + xlines) / (gdouble) progress_total); } } else if (style == BEZIER_2) { for (i = 0; i < xlines; i++) { draw_bezier_vertical_border (buffer, bufsize, width, height, bytes, x[i], xtiles, ytiles, blend_lines, blend_amount, steps); if (!preview_mode) gimp_progress_update ((gdouble) i / (gdouble) progress_total); } for (i = 0; i < ylines; i++) { draw_bezier_horizontal_border (buffer, bufsize, width, height, bytes, y[i], xtiles, ytiles, blend_lines, blend_amount, steps); if (!preview_mode) gimp_progress_update ((gdouble) (i + xlines) / (gdouble) progress_total); } } else { g_printerr ("draw_jigsaw: bad style\n"); gimp_quit (); } gimp_progress_update (1.0); g_free (globals.gridx); g_free (globals.gridy); } static void draw_vertical_border (guchar *buffer, gint bufsize, gint width, gint height, gint bytes, gint x_offset, gint ytiles, gint blend_lines, gdouble blend_amount) { gint i, j; gint tile_height = height / ytiles; gint tile_height_eighth = tile_height / 8; gint curve_start_offset = 3 * tile_height_eighth; gint curve_end_offset = curve_start_offset + 2 * tile_height_eighth; gint px[2], py[2]; gint ly[2], dy[2]; gint y_offset = 0; gdouble delta; gdouble sigma = blend_amount / blend_lines; gint right; for (i = 0; i < ytiles; i++) { right = g_random_int_range (0, 2); /* first straight line from top downwards */ px[0] = px[1] = x_offset; py[0] = y_offset; py[1] = y_offset + curve_start_offset - 1; draw_vertical_line (buffer, bufsize, width, bytes, px, py); delta = blend_amount; dy[0] = ly[0] = py[0]; dy[1] = ly[1] = py[1]; if (!right) { ly[1] += blend_lines + 2; } for (j = 0; j < blend_lines; j++) { dy[0]++; dy[1]--; ly[0]++; ly[1]--; px[0] = x_offset - j - 1; darken_vertical_line (buffer, bufsize, width, bytes, px, dy, delta); px[0] = x_offset + j + 1; lighten_vertical_line (buffer, bufsize, width, bytes, px, ly, delta); delta -= sigma; } /* top half of curve */ if (right) { draw_right_bump (buffer, bufsize, width, bytes, x_offset, y_offset + curve_start_offset, globals.steps[RIGHT]); delta = blend_amount; for (j = 0; j < blend_lines; j++) { /* use to be -j -1 */ darken_right_bump (buffer, bufsize, width, bytes, x_offset, y_offset + curve_start_offset, globals.steps[RIGHT], delta, j); /* use to be +j + 1 */ lighten_right_bump (buffer, bufsize, width, bytes, x_offset, y_offset + curve_start_offset, globals.steps[RIGHT], delta, j); delta -= sigma; } } else { draw_left_bump (buffer, bufsize, width, bytes, x_offset, y_offset + curve_start_offset, globals.steps[LEFT]); delta = blend_amount; for (j = 0; j < blend_lines; j++) { /* use to be -j -1 */ darken_left_bump (buffer, bufsize, width, bytes, x_offset, y_offset + curve_start_offset, globals.steps[LEFT], delta, j); /* use to be -j - 1 */ lighten_left_bump (buffer, bufsize, width, bytes, x_offset, y_offset + curve_start_offset, globals.steps[LEFT], delta, j); delta -= sigma; } } /* bottom straight line of a tile wall */ px[0] = px[1] = x_offset; py[0] = y_offset + curve_end_offset; py[1] = globals.gridy[i]; draw_vertical_line (buffer, bufsize, width, bytes, px, py); delta = blend_amount; dy[0] = ly[0] = py[0]; dy[1] = ly[1] = py[1]; if (right) { dy[0] -= blend_lines + 2; } for (j = 0; j < blend_lines; j++) { dy[0]++; dy[1]--; ly[0]++; ly[1]--; px[0] = x_offset - j - 1; darken_vertical_line (buffer, bufsize, width, bytes, px, dy, delta); px[0] = x_offset + j + 1; lighten_vertical_line (buffer, bufsize, width, bytes, px, ly, delta); delta -= sigma; } y_offset = globals.gridy[i]; } /* for */ } /* assumes RGB* */ static void draw_horizontal_border (guchar *buffer, gint bufsize, gint width, gint bytes, gint y_offset, gint xtiles, gint blend_lines, gdouble blend_amount) { gint i, j; gint tile_width = width / xtiles; gint tile_width_eighth = tile_width / 8; gint curve_start_offset = 3 * tile_width_eighth; gint curve_end_offset = curve_start_offset + 2 * tile_width_eighth; gint px[2], py[2]; gint dx[2], lx[2]; gint x_offset = 0; gdouble delta; gdouble sigma = blend_amount / blend_lines; gint up; for (i = 0; i < xtiles; i++) { up = g_random_int_range (0, 2); /* first horizontal line across */ px[0] = x_offset; px[1] = x_offset + curve_start_offset - 1; py[0] = py[1] = y_offset; draw_horizontal_line (buffer, bufsize, width, bytes, px, py); delta = blend_amount; dx[0] = lx[0] = px[0]; dx[1] = lx[1] = px[1]; if (up) { lx[1] += blend_lines + 2; } for (j = 0; j < blend_lines; j++) { dx[0]++; dx[1]--; lx[0]++; lx[1]--; py[0] = y_offset - j - 1; darken_horizontal_line (buffer, bufsize, width, bytes, dx, py, delta); py[0] = y_offset + j + 1; lighten_horizontal_line (buffer, bufsize, width, bytes, lx, py, delta); delta -= sigma; } if (up) { draw_up_bump (buffer, bufsize, width, bytes, y_offset, x_offset + curve_start_offset, globals.steps[UP]); delta = blend_amount; for (j = 0; j < blend_lines; j++) { /* use to be -j -1 */ darken_up_bump (buffer, bufsize, width, bytes, y_offset, x_offset + curve_start_offset, globals.steps[UP], delta, j); /* use to be +j + 1 */ lighten_up_bump (buffer, bufsize, width, bytes, y_offset, x_offset + curve_start_offset, globals.steps[UP], delta, j); delta -= sigma; } } else { draw_down_bump (buffer, bufsize, width, bytes, y_offset, x_offset + curve_start_offset, globals.steps[DOWN]); delta = blend_amount; for (j = 0; j < blend_lines; j++) { /* use to be +j + 1 */ darken_down_bump (buffer, bufsize, width, bytes, y_offset, x_offset + curve_start_offset, globals.steps[DOWN], delta, j); /* use to be -j -1 */ lighten_down_bump (buffer, bufsize, width, bytes, y_offset, x_offset + curve_start_offset, globals.steps[DOWN], delta, j); delta -= sigma; } } /* right horizontal line of tile */ px[0] = x_offset + curve_end_offset; px[1] = globals.gridx[i]; py[0] = py[1] = y_offset; draw_horizontal_line (buffer, bufsize, width, bytes, px, py); delta = blend_amount; dx[0] = lx[0] = px[0]; dx[1] = lx[1] = px[1]; if (!up) { dx[0] -= blend_lines + 2; } for (j = 0;j < blend_lines; j++) { dx[0]++; dx[1]--; lx[0]++; lx[1]--; py[0] = y_offset - j - 1; darken_horizontal_line (buffer, bufsize, width, bytes, dx, py, delta); py[0] = y_offset + j + 1; lighten_horizontal_line (buffer, bufsize, width, bytes, lx, py, delta); delta -= sigma; } x_offset = globals.gridx[i]; } /* for */ } /* assumes going top to bottom */ static void draw_vertical_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint px[2], gint py[2]) { gint i; gint rowstride; gint index; gint length; rowstride = bytes * width; index = px[0] * bytes + rowstride * py[0]; length = py[1] - py[0] + 1; for (i = 0; i < length; i++) { DRAW_POINT (buffer, bufsize, index); index += rowstride; } } /* assumes going left to right */ static void draw_horizontal_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint px[2], gint py[2]) { gint i; gint rowstride; gint index; gint length; rowstride = bytes * width; index = px[0] * bytes + rowstride * py[0]; length = px[1] - px[0] + 1; for (i = 0; i < length; i++) { DRAW_POINT (buffer, bufsize, index); index += bytes; } } static void draw_right_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint x_offset, gint curve_start_offset, gint steps) { gint i; gint x, y; gint index; gint rowstride; rowstride = bytes * width; for (i = 0; i < steps; i++) { x = globals.cachex1[RIGHT][i] + x_offset; y = globals.cachey1[RIGHT][i] + curve_start_offset; index = y * rowstride + x * bytes; DRAW_POINT (buffer, bufsize, index); x = globals.cachex2[RIGHT][i] + x_offset; y = globals.cachey2[RIGHT][i] + curve_start_offset; index = y * rowstride + x * bytes; DRAW_POINT (buffer, bufsize, index); } } static void draw_left_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint x_offset, gint curve_start_offset, gint steps) { gint i; gint x, y; gint index; gint rowstride; rowstride = bytes * width; for (i = 0; i < steps; i++) { x = globals.cachex1[LEFT][i] + x_offset; y = globals.cachey1[LEFT][i] + curve_start_offset; index = y * rowstride + x * bytes; DRAW_POINT (buffer, bufsize, index); x = globals.cachex2[LEFT][i] + x_offset; y = globals.cachey2[LEFT][i] + curve_start_offset; index = y * rowstride + x * bytes; DRAW_POINT (buffer, bufsize, index); } } static void draw_up_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint y_offset, gint curve_start_offset, gint steps) { gint i; gint x, y; gint index; gint rowstride; rowstride = bytes * width; for (i = 0; i < steps; i++) { x = globals.cachex1[UP][i] + curve_start_offset; y = globals.cachey1[UP][i] + y_offset; index = y * rowstride + x * bytes; DRAW_POINT (buffer, bufsize, index); x = globals.cachex2[UP][i] + curve_start_offset; y = globals.cachey2[UP][i] + y_offset; index = y * rowstride + x * bytes; DRAW_POINT (buffer, bufsize, index); } } static void draw_down_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint y_offset, gint curve_start_offset, gint steps) { gint i; gint x, y; gint index; gint rowstride; rowstride = bytes * width; for (i = 0; i < steps; i++) { x = globals.cachex1[DOWN][i] + curve_start_offset; y = globals.cachey1[DOWN][i] + y_offset; index = y * rowstride + x * bytes; DRAW_POINT (buffer, bufsize, index); x = globals.cachex2[DOWN][i] + curve_start_offset; y = globals.cachey2[DOWN][i] + y_offset; index = y * rowstride + x * bytes; DRAW_POINT (buffer, bufsize, index); } } static void malloc_cache (void) { gint i, j; gint blend_lines = config.blend_lines; for (i = 0; i < 4; i++) { gint steps = globals.steps[i]; globals.cachex1[i] = g_new (gint, steps); globals.cachex2[i] = g_new (gint, steps); globals.cachey1[i] = g_new (gint, steps); globals.cachey2[i] = g_new (gint, steps); globals.blend_outer_cachex1[i] = g_new (gint *, blend_lines); globals.blend_outer_cachex2[i] = g_new (gint *, blend_lines); globals.blend_outer_cachey1[i] = g_new (gint *, blend_lines); globals.blend_outer_cachey2[i] = g_new (gint *, blend_lines); globals.blend_inner_cachex1[i] = g_new (gint *, blend_lines); globals.blend_inner_cachex2[i] = g_new (gint *, blend_lines); globals.blend_inner_cachey1[i] = g_new (gint *, blend_lines); globals.blend_inner_cachey2[i] = g_new (gint *, blend_lines); for (j = 0; j < blend_lines; j++) { globals.blend_outer_cachex1[i][j] = g_new (gint, steps); globals.blend_outer_cachex2[i][j] = g_new (gint, steps); globals.blend_outer_cachey1[i][j] = g_new (gint, steps); globals.blend_outer_cachey2[i][j] = g_new (gint, steps); globals.blend_inner_cachex1[i][j] = g_new (gint, steps); globals.blend_inner_cachex2[i][j] = g_new (gint, steps); globals.blend_inner_cachey1[i][j] = g_new (gint, steps); globals.blend_inner_cachey2[i][j] = g_new (gint, steps); } } } static void free_cache (void) { gint i, j; gint blend_lines = config.blend_lines; for (i = 0; i < 4; i ++) { g_free (globals.cachex1[i]); g_free (globals.cachex2[i]); g_free (globals.cachey1[i]); g_free (globals.cachey2[i]); for (j = 0; j < blend_lines; j++) { g_free (globals.blend_outer_cachex1[i][j]); g_free (globals.blend_outer_cachex2[i][j]); g_free (globals.blend_outer_cachey1[i][j]); g_free (globals.blend_outer_cachey2[i][j]); g_free (globals.blend_inner_cachex1[i][j]); g_free (globals.blend_inner_cachex2[i][j]); g_free (globals.blend_inner_cachey1[i][j]); g_free (globals.blend_inner_cachey2[i][j]); } g_free (globals.blend_outer_cachex1[i]); g_free (globals.blend_outer_cachex2[i]); g_free (globals.blend_outer_cachey1[i]); g_free (globals.blend_outer_cachey2[i]); g_free (globals.blend_inner_cachex1[i]); g_free (globals.blend_inner_cachex2[i]); g_free (globals.blend_inner_cachey1[i]); g_free (globals.blend_inner_cachey2[i]); } } static void init_right_bump (gint width, gint height) { gint i; gint xtiles = config.x; gint ytiles = config.y; gint steps = globals.steps[RIGHT]; gint px[4], py[4]; gint x_offset = 0; gint tile_width = width / xtiles; gint tile_height = height/ ytiles; gint tile_height_eighth = tile_height / 8; gint curve_start_offset = 0; gint curve_end_offset = curve_start_offset + 2 * tile_height_eighth; gint blend_lines = config.blend_lines; px[0] = x_offset; px[1] = x_offset + XFACTOR2 * tile_width; px[2] = x_offset + XFACTOR3 * tile_width; px[3] = x_offset + XFACTOR4 * tile_width; py[0] = curve_start_offset; py[1] = curve_start_offset + YFACTOR2 * tile_height; py[2] = curve_start_offset - YFACTOR3 * tile_height; py[3] = curve_start_offset + YFACTOR4 * tile_height; generate_bezier(px, py, steps, globals.cachex1[RIGHT], globals.cachey1[RIGHT]); /* outside right bump */ for (i = 0; i < blend_lines; i++) { py[0]--; py[1]--; py[2]--; px[3]++; generate_bezier(px, py, steps, globals.blend_outer_cachex1[RIGHT][i], globals.blend_outer_cachey1[RIGHT][i]); } /* inside right bump */ py[0] += blend_lines; py[1] += blend_lines; py[2] += blend_lines; px[3] -= blend_lines; for (i = 0; i < blend_lines; i++) { py[0]++; py[1]++; py[2]++; px[3]--; generate_bezier(px, py, steps, globals.blend_inner_cachex1[RIGHT][i], globals.blend_inner_cachey1[RIGHT][i]); } /* bottom half of bump */ px[0] = x_offset + XFACTOR5 * tile_width; px[1] = x_offset + XFACTOR6 * tile_width; px[2] = x_offset + XFACTOR7 * tile_width; px[3] = x_offset; py[0] = curve_start_offset + YFACTOR5 * tile_height; py[1] = curve_start_offset + YFACTOR6 * tile_height; py[2] = curve_start_offset + YFACTOR7 * tile_height; py[3] = curve_end_offset; generate_bezier(px, py, steps, globals.cachex2[RIGHT], globals.cachey2[RIGHT]); /* outer right bump */ for (i = 0; i < blend_lines; i++) { py[1]++; py[2]++; py[3]++; px[0]++; generate_bezier(px, py, steps, globals.blend_outer_cachex2[RIGHT][i], globals.blend_outer_cachey2[RIGHT][i]); } /* inner right bump */ py[1] -= blend_lines; py[2] -= blend_lines; py[3] -= blend_lines; px[0] -= blend_lines; for (i = 0; i < blend_lines; i++) { py[1]--; py[2]--; py[3]--; px[0]--; generate_bezier(px, py, steps, globals.blend_inner_cachex2[RIGHT][i], globals.blend_inner_cachey2[RIGHT][i]); } } static void init_left_bump (gint width, gint height) { gint i; gint xtiles = config.x; gint ytiles = config.y; gint steps = globals.steps[LEFT]; gint px[4], py[4]; gint x_offset = 0; gint tile_width = width / xtiles; gint tile_height = height / ytiles; gint tile_height_eighth = tile_height / 8; gint curve_start_offset = 0; gint curve_end_offset = curve_start_offset + 2 * tile_height_eighth; gint blend_lines = config.blend_lines; px[0] = x_offset; px[1] = x_offset - XFACTOR2 * tile_width; px[2] = x_offset - XFACTOR3 * tile_width; px[3] = x_offset - XFACTOR4 * tile_width; py[0] = curve_start_offset; py[1] = curve_start_offset + YFACTOR2 * tile_height; py[2] = curve_start_offset - YFACTOR3 * tile_height; py[3] = curve_start_offset + YFACTOR4 * tile_height; generate_bezier(px, py, steps, globals.cachex1[LEFT], globals.cachey1[LEFT]); /* outer left bump */ for (i = 0; i < blend_lines; i++) { py[0]--; py[1]--; py[2]--; px[3]--; generate_bezier(px, py, steps, globals.blend_outer_cachex1[LEFT][i], globals.blend_outer_cachey1[LEFT][i]); } /* inner left bump */ py[0] += blend_lines; py[1] += blend_lines; py[2] += blend_lines; px[3] += blend_lines; for (i = 0; i < blend_lines; i++) { py[0]++; py[1]++; py[2]++; px[3]++; generate_bezier(px, py, steps, globals.blend_inner_cachex1[LEFT][i], globals.blend_inner_cachey1[LEFT][i]); } /* bottom half of bump */ px[0] = x_offset - XFACTOR5 * tile_width; px[1] = x_offset - XFACTOR6 * tile_width; px[2] = x_offset - XFACTOR7 * tile_width; px[3] = x_offset; py[0] = curve_start_offset + YFACTOR5 * tile_height; py[1] = curve_start_offset + YFACTOR6 * tile_height; py[2] = curve_start_offset + YFACTOR7 * tile_height; py[3] = curve_end_offset; generate_bezier(px, py, steps, globals.cachex2[LEFT], globals.cachey2[LEFT]); /* outer left bump */ for (i = 0; i < blend_lines; i++) { py[1]++; py[2]++; py[3]++; px[0]--; generate_bezier(px, py, steps, globals.blend_outer_cachex2[LEFT][i], globals.blend_outer_cachey2[LEFT][i]); } /* inner left bump */ py[1] -= blend_lines; py[2] -= blend_lines; py[3] -= blend_lines; px[0] += blend_lines; for (i = 0; i < blend_lines; i++) { py[1]--; py[2]--; py[3]--; px[0]++; generate_bezier(px, py, steps, globals.blend_inner_cachex2[LEFT][i], globals.blend_inner_cachey2[LEFT][i]); } } static void init_up_bump (gint width, gint height) { gint i; gint xtiles = config.x; gint ytiles = config.y; gint steps = globals.steps[UP]; gint px[4], py[4]; gint y_offset = 0; gint tile_width = width / xtiles; gint tile_height = height/ ytiles; gint tile_width_eighth = tile_width / 8; gint curve_start_offset = 0; gint curve_end_offset = curve_start_offset + 2 * tile_width_eighth; gint blend_lines = config.blend_lines; px[0] = curve_start_offset; px[1] = curve_start_offset + YFACTOR2 * tile_width; px[2] = curve_start_offset - YFACTOR3 * tile_width; px[3] = curve_start_offset + YFACTOR4 * tile_width; py[0] = y_offset; py[1] = y_offset - XFACTOR2 * tile_height; py[2] = y_offset - XFACTOR3 * tile_height; py[3] = y_offset - XFACTOR4 * tile_height; generate_bezier(px, py, steps, globals.cachex1[UP], globals.cachey1[UP]); /* outer up bump */ for (i = 0; i < blend_lines; i++) { px[0]--; px[1]--; px[2]--; py[3]--; generate_bezier(px, py, steps, globals.blend_outer_cachex1[UP][i], globals.blend_outer_cachey1[UP][i]); } /* inner up bump */ px[0] += blend_lines; px[1] += blend_lines; px[2] += blend_lines; py[3] += blend_lines; for (i = 0; i < blend_lines; i++) { px[0]++; px[1]++; px[2]++; py[3]++; generate_bezier(px, py, steps, globals.blend_inner_cachex1[UP][i], globals.blend_inner_cachey1[UP][i]); } /* bottom half of bump */ px[0] = curve_start_offset + YFACTOR5 * tile_width; px[1] = curve_start_offset + YFACTOR6 * tile_width; px[2] = curve_start_offset + YFACTOR7 * tile_width; px[3] = curve_end_offset; py[0] = y_offset - XFACTOR5 * tile_height; py[1] = y_offset - XFACTOR6 * tile_height; py[2] = y_offset - XFACTOR7 * tile_height; py[3] = y_offset; generate_bezier(px, py, steps, globals.cachex2[UP], globals.cachey2[UP]); /* outer up bump */ for (i = 0; i < blend_lines; i++) { px[1]++; px[2]++; px[3]++; py[0]--; generate_bezier(px, py, steps, globals.blend_outer_cachex2[UP][i], globals.blend_outer_cachey2[UP][i]); } /* inner up bump */ px[1] -= blend_lines; px[2] -= blend_lines; px[3] -= blend_lines; py[0] += blend_lines; for (i = 0; i < blend_lines; i++) { px[1]--; px[2]--; px[3]--; py[0]++; generate_bezier(px, py, steps, globals.blend_inner_cachex2[UP][i], globals.blend_inner_cachey2[UP][i]); } } static void init_down_bump (gint width, gint height) { gint i; gint xtiles = config.x; gint ytiles = config.y; gint steps = globals.steps[DOWN]; gint px[4], py[4]; gint y_offset = 0; gint tile_width = width / xtiles; gint tile_height = height/ ytiles; gint tile_width_eighth = tile_width / 8; gint curve_start_offset = 0; gint curve_end_offset = curve_start_offset + 2 * tile_width_eighth; gint blend_lines = config.blend_lines; px[0] = curve_start_offset; px[1] = curve_start_offset + YFACTOR2 * tile_width; px[2] = curve_start_offset - YFACTOR3 * tile_width; px[3] = curve_start_offset + YFACTOR4 * tile_width; py[0] = y_offset; py[1] = y_offset + XFACTOR2 * tile_height; py[2] = y_offset + XFACTOR3 * tile_height; py[3] = y_offset + XFACTOR4 * tile_height; generate_bezier(px, py, steps, globals.cachex1[DOWN], globals.cachey1[DOWN]); /* outer down bump */ for (i = 0; i < blend_lines; i++) { px[0]--; px[1]--; px[2]--; py[3]++; generate_bezier(px, py, steps, globals.blend_outer_cachex1[DOWN][i], globals.blend_outer_cachey1[DOWN][i]); } /* inner down bump */ px[0] += blend_lines; px[1] += blend_lines; px[2] += blend_lines; py[3] -= blend_lines; for (i = 0; i < blend_lines; i++) { px[0]++; px[1]++; px[2]++; py[3]--; generate_bezier(px, py, steps, globals.blend_inner_cachex1[DOWN][i], globals.blend_inner_cachey1[DOWN][i]); } /* bottom half of bump */ px[0] = curve_start_offset + YFACTOR5 * tile_width; px[1] = curve_start_offset + YFACTOR6 * tile_width; px[2] = curve_start_offset + YFACTOR7 * tile_width; px[3] = curve_end_offset; py[0] = y_offset + XFACTOR5 * tile_height; py[1] = y_offset + XFACTOR6 * tile_height; py[2] = y_offset + XFACTOR7 * tile_height; py[3] = y_offset; generate_bezier(px, py, steps, globals.cachex2[DOWN], globals.cachey2[DOWN]); /* outer down bump */ for (i = 0; i < blend_lines; i++) { px[1]++; px[2]++; px[3]++; py[0]++; generate_bezier(px, py, steps, globals.blend_outer_cachex2[DOWN][i], globals.blend_outer_cachey2[DOWN][i]); } /* inner down bump */ px[1] -= blend_lines; px[2] -= blend_lines; px[3] -= blend_lines; py[0] -= blend_lines; for (i = 0; i < blend_lines; i++) { px[1]--; px[2]--; px[3]--; py[0]--; generate_bezier(px, py, steps, globals.blend_inner_cachex2[DOWN][i], globals.blend_inner_cachey2[DOWN][i]); } } static void generate_grid (gint width, gint height, gint xtiles, gint ytiles, gint *x, gint *y) { gint i; gint xlines = xtiles - 1; gint ylines = ytiles - 1; gint tile_width = width / xtiles; gint tile_height = height / ytiles; gint tile_width_leftover = width % xtiles; gint tile_height_leftover = height % ytiles; gint x_offset = tile_width; gint y_offset = tile_height; gint carry; for (i = 0; i < xlines; i++) { x[i] = x_offset; x_offset += tile_width; } carry = 0; while (tile_width_leftover) { for (i = carry; i < xlines; i++) { x[i] += 1; } tile_width_leftover--; carry++; } x[xlines] = width - 1; /* padding for draw_horizontal_border */ for (i = 0; i < ytiles; i++) { y[i] = y_offset; y_offset += tile_height; } carry = 0; while (tile_height_leftover) { for (i = carry; i < ylines; i++) { y[i] += 1; } tile_height_leftover--; carry++; } y[ylines] = height - 1; /* padding for draw_vertical_border */ } /* assumes RGB* */ /* assumes py[1] > py[0] and px[0] = px[1] */ static void darken_vertical_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint px[2], gint py[2], gdouble delta) { gint i; gint rowstride; gint index; gint length; gint temp; rowstride = bytes * width; index = px[0] * bytes + py[0] * rowstride; length = py[1] - py[0] + 1; for (i = 0; i < length; i++) { DARKEN_POINT (buffer, bufsize, index, delta, temp); index += rowstride; } } /* assumes RGB* */ /* assumes py[1] > py[0] and px[0] = px[1] */ static void lighten_vertical_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint px[2], gint py[2], gdouble delta) { gint i; gint rowstride; gint index; gint length; gint temp; rowstride = bytes * width; index = px[0] * bytes + py[0] * rowstride; length = py[1] - py[0] + 1; for (i = 0; i < length; i++) { LIGHTEN_POINT (buffer, bufsize, index, delta, temp); index += rowstride; } } /* assumes RGB* */ /* assumes px[1] > px[0] and py[0] = py[1] */ static void darken_horizontal_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint px[2], gint py[2], gdouble delta) { gint i; gint rowstride; gint index; gint length; gint temp; rowstride = bytes * width; index = px[0] * bytes + py[0] * rowstride; length = px[1] - px[0] + 1; for (i = 0; i < length; i++) { DARKEN_POINT (buffer, bufsize, index, delta, temp); index += bytes; } } /* assumes RGB* */ /* assumes px[1] > px[0] and py[0] = py[1] */ static void lighten_horizontal_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint px[2], gint py[2], gdouble delta) { gint i; gint rowstride; gint index; gint length; gint temp; rowstride = bytes * width; index = px[0] * bytes + py[0] * rowstride; length = px[1] - px[0] + 1; for (i = 0; i < length; i++) { LIGHTEN_POINT (buffer, bufsize, index, delta, temp); index += bytes; } } static void darken_right_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint x_offset, gint curve_start_offset, gint steps, gdouble delta, gint counter) { gint i; gint x, y; gint index; gint last_index1 = -1; gint last_index2 = -1; gint rowstride; gint temp; gint j = counter; rowstride = bytes * width; for (i = 0; i < steps; i++) { x = x_offset + globals.blend_inner_cachex1[RIGHT][j][i]; y = curve_start_offset + globals.blend_inner_cachey1[RIGHT][j][i]; index = y * rowstride + x * bytes; if (index != last_index1) { if (i < steps / 1.3) { LIGHTEN_POINT (buffer, bufsize, index, delta, temp); } else { DARKEN_POINT (buffer, bufsize, index, delta, temp); } last_index1 = index; } x = x_offset + globals.blend_inner_cachex2[RIGHT][j][i]; y = curve_start_offset + globals.blend_inner_cachey2[RIGHT][j][i]; index = y * rowstride + x * bytes; if (index != last_index2) { DARKEN_POINT (buffer, bufsize, index, delta, temp); last_index2 = index; } } } static void lighten_right_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint x_offset, gint curve_start_offset, gint steps, gdouble delta, gint counter) { gint i; gint x, y; gint index; gint last_index1 = -1; gint last_index2 = -1; gint rowstride; gint temp; gint j = counter; rowstride = bytes * width; for (i = 0; i < steps; i++) { x = x_offset + globals.blend_outer_cachex1[RIGHT][j][i]; y = curve_start_offset + globals.blend_outer_cachey1[RIGHT][j][i]; index = y * rowstride + x * bytes; if (index != last_index1) { if (i < steps / 1.3) { DARKEN_POINT (buffer, bufsize, index, delta, temp); } else { LIGHTEN_POINT (buffer, bufsize, index, delta, temp); } last_index1 = index; } x = x_offset + globals.blend_outer_cachex2[RIGHT][j][i]; y = curve_start_offset + globals.blend_outer_cachey2[RIGHT][j][i]; index = y * rowstride + x * bytes; if (index != last_index2) { LIGHTEN_POINT (buffer, bufsize, index, delta, temp); last_index2 = index; } } } static void darken_left_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint x_offset, gint curve_start_offset, gint steps, gdouble delta, gint counter) { gint i; gint x, y; gint index; gint last_index1 = -1; gint last_index2 = -1; gint rowstride; gint temp; gint j = counter; rowstride = bytes * width; for (i = 0; i < steps; i++) { x = x_offset + globals.blend_outer_cachex1[LEFT][j][i]; y = curve_start_offset + globals.blend_outer_cachey1[LEFT][j][i]; index = y * rowstride + x * bytes; if (index != last_index1) { DARKEN_POINT (buffer, bufsize, index, delta, temp); last_index1 = index; } x = x_offset + globals.blend_outer_cachex2[LEFT][j][i]; y = curve_start_offset + globals.blend_outer_cachey2[LEFT][j][i]; index = y * rowstride + x * bytes; if (index != last_index2) { if (i < steps / 4) { DARKEN_POINT (buffer, bufsize, index, delta, temp); } else { LIGHTEN_POINT (buffer, bufsize, index, delta, temp); } last_index2 = index; } } } static void lighten_left_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint x_offset, gint curve_start_offset, gint steps, gdouble delta, gint counter) { gint i; gint x, y; gint index; gint last_index1 = -1; gint last_index2 = -1; gint rowstride; gint temp; gint j = counter; rowstride = bytes * width; for (i = 0; i < steps; i++) { x = x_offset + globals.blend_inner_cachex1[LEFT][j][i]; y = curve_start_offset + globals.blend_inner_cachey1[LEFT][j][i]; index = y * rowstride + x * bytes; if (index != last_index1) { LIGHTEN_POINT (buffer, bufsize, index, delta, temp); last_index1 = index; } x = x_offset + globals.blend_inner_cachex2[LEFT][j][i]; y = curve_start_offset + globals.blend_inner_cachey2[LEFT][j][i]; index = y * rowstride + x * bytes; if (index != last_index2) { if (i < steps / 4) { LIGHTEN_POINT (buffer, bufsize, index, delta, temp); } else { DARKEN_POINT (buffer, bufsize, index, delta, temp); } last_index2 = index; } } } static void darken_up_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint y_offset, gint curve_start_offset, gint steps, gdouble delta, gint counter) { gint i; gint x, y; gint index; gint last_index1 = -1; gint last_index2 = -1; gint rowstride; gint temp; gint j = counter; rowstride = bytes * width; for (i = 0; i < steps; i++) { x = curve_start_offset + globals.blend_outer_cachex1[UP][j][i]; y = y_offset + globals.blend_outer_cachey1[UP][j][i]; index = y * rowstride + x * bytes; if (index != last_index1) { DARKEN_POINT (buffer, bufsize, index, delta, temp); last_index1 = index; } x = curve_start_offset + globals.blend_outer_cachex2[UP][j][i]; y = y_offset + globals.blend_outer_cachey2[UP][j][i]; index = y * rowstride + x * bytes; if (index != last_index2) { if (i < steps / 4) { DARKEN_POINT (buffer, bufsize, index, delta, temp); } else { LIGHTEN_POINT (buffer, bufsize, index, delta, temp); } last_index2 = index; } } } static void lighten_up_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint y_offset, gint curve_start_offset, gint steps, gdouble delta, gint counter) { gint i; gint x, y; gint index; gint last_index1 = -1; gint last_index2 = -1; gint rowstride; gint temp; gint j = counter; rowstride = bytes * width; for (i = 0; i < steps; i++) { x = curve_start_offset + globals.blend_inner_cachex1[UP][j][i]; y = y_offset + globals.blend_inner_cachey1[UP][j][i]; index = y * rowstride + x * bytes; if (index != last_index1) { LIGHTEN_POINT (buffer, bufsize, index, delta, temp); last_index1 = index; } x = curve_start_offset + globals.blend_inner_cachex2[UP][j][i]; y = y_offset + globals.blend_inner_cachey2[UP][j][i]; index = y * rowstride + x * bytes; if (index != last_index2) { if (i < steps / 4) { LIGHTEN_POINT (buffer, bufsize, index, delta, temp); } else { DARKEN_POINT (buffer, bufsize, index, delta, temp); } last_index2 = index; } } } static void darken_down_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint y_offset, gint curve_start_offset, gint steps, gdouble delta, gint counter) { gint i; gint x, y; gint index; gint last_index1 = -1; gint last_index2 = -1; gint rowstride; gint temp; gint j = counter; rowstride = bytes * width; for (i = 0; i < steps; i++) { x = curve_start_offset + globals.blend_inner_cachex1[DOWN][j][i]; y = y_offset + globals.blend_inner_cachey1[DOWN][j][i]; index = y * rowstride + x * bytes; if (index != last_index1) { if (i < steps / 1.2) { LIGHTEN_POINT (buffer, bufsize, index, delta, temp); } else { DARKEN_POINT (buffer, bufsize, index, delta, temp); } last_index1 = index; } x = curve_start_offset + globals.blend_inner_cachex2[DOWN][j][i]; y = y_offset + globals.blend_inner_cachey2[DOWN][j][i]; index = y * rowstride + x * bytes; if (index != last_index2) { DARKEN_POINT (buffer, bufsize, index, delta, temp); last_index2 = index; } } } static void lighten_down_bump (guchar *buffer, gint bufsize, gint width, gint bytes, gint y_offset, gint curve_start_offset, gint steps, gdouble delta, gint counter) { gint i; gint x, y; gint index; gint last_index1 = -1; gint last_index2 = -1; gint rowstride; gint temp; gint j = counter; rowstride = bytes * width; for (i = 0; i < steps; i++) { x = curve_start_offset + globals.blend_outer_cachex1[DOWN][j][i]; y = y_offset + globals.blend_outer_cachey1[DOWN][j][i]; index = y * rowstride + x * bytes; if (index != last_index1) { if (i < steps / 1.2) { DARKEN_POINT (buffer, bufsize, index, delta, temp); } else { LIGHTEN_POINT (buffer, bufsize, index, delta, temp); } last_index1 = index; } x = curve_start_offset + globals.blend_outer_cachex2[DOWN][j][i]; y = y_offset + globals.blend_outer_cachey2[DOWN][j][i]; index = y * rowstride + x * bytes; if (index != last_index2) { LIGHTEN_POINT (buffer, bufsize, index, delta, temp); last_index2 = index; } } } static void draw_bezier_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint steps, gint *cx, gint *cy) { gint i; gint x, y; gint index; gint rowstride; rowstride = bytes * width; for (i = 0; i < steps; i++) { x = cx[i]; y = cy[i]; index = y * rowstride + x * bytes; DRAW_POINT (buffer, bufsize, index); } } static void darken_bezier_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint x_offset, gint y_offset, gint steps, gint *cx, gint *cy, gdouble delta) { gint i; gint x, y; gint index; gint last_index = -1; gint rowstride; gint temp; rowstride = bytes * width; for (i = 0; i < steps; i++) { x = cx[i] + x_offset; y = cy[i] + y_offset; index = y * rowstride + x * bytes; if (index != last_index) { DARKEN_POINT (buffer, bufsize, index, delta, temp); last_index = index; } } } static void lighten_bezier_line (guchar *buffer, gint bufsize, gint width, gint bytes, gint x_offset, gint y_offset, gint steps, gint *cx, gint *cy, gdouble delta) { gint i; gint x, y; gint index; gint last_index = -1; gint rowstride; gint temp; rowstride = bytes * width; for (i = 0; i < steps; i++) { x = cx[i] + x_offset; y = cy[i] + y_offset; index = y * rowstride + x * bytes; if (index != last_index) { LIGHTEN_POINT (buffer, bufsize, index, delta, temp); last_index = index; } } } static void draw_bezier_vertical_border (guchar *buffer, gint bufsize, gint width, gint height, gint bytes, gint x_offset, gint xtiles, gint ytiles, gint blend_lines, gdouble blend_amount, gint steps) { gint i, j; gint tile_width = width / xtiles; gint tile_height = height / ytiles; gint tile_height_eighth = tile_height / 8; gint curve_start_offset = 3 * tile_height_eighth; gint curve_end_offset = curve_start_offset + 2 * tile_height_eighth; gint px[4], py[4]; gint y_offset = 0; gdouble delta; gdouble sigma = blend_amount / blend_lines; gint right; gint *cachex, *cachey; cachex = g_new (gint, steps); cachey = g_new (gint, steps); for (i = 0; i < ytiles; i++) { right = g_random_int_range (0, 2); px[0] = px[3] = x_offset; px[1] = x_offset + WALL_XFACTOR2 * tile_width * FUDGE; px[2] = x_offset + WALL_XFACTOR3 * tile_width * FUDGE; py[0] = y_offset; py[1] = y_offset + WALL_YCONS2 * tile_height; py[2] = y_offset + WALL_YCONS3 * tile_height; py[3] = y_offset + curve_start_offset; if (right) { px[1] = x_offset - WALL_XFACTOR2 * tile_width; px[2] = x_offset - WALL_XFACTOR3 * tile_width; } generate_bezier (px, py, steps, cachex, cachey); draw_bezier_line (buffer, bufsize, width, bytes, steps, cachex, cachey); delta = blend_amount; for (j = 0; j < blend_lines; j++) { px[0] = -j - 1; darken_bezier_line (buffer, bufsize, width, bytes, px[0], 0, steps, cachex, cachey, delta); px[0] = j + 1; lighten_bezier_line (buffer, bufsize, width, bytes, px[0], 0, steps, cachex, cachey, delta); delta -= sigma; } if (right) { draw_right_bump (buffer, bufsize, width, bytes, x_offset, y_offset + curve_start_offset, globals.steps[RIGHT]); delta = blend_amount; for (j = 0; j < blend_lines; j++) { /* use to be -j -1 */ darken_right_bump (buffer, bufsize, width, bytes, x_offset, y_offset + curve_start_offset, globals.steps[RIGHT], delta, j); /* use to be +j + 1 */ lighten_right_bump (buffer, bufsize, width, bytes, x_offset, y_offset + curve_start_offset, globals.steps[RIGHT], delta, j); delta -= sigma; } } else { draw_left_bump (buffer, bufsize, width, bytes, x_offset, y_offset + curve_start_offset, globals.steps[LEFT]); delta = blend_amount; for (j = 0; j < blend_lines; j++) { /* use to be -j -1 */ darken_left_bump (buffer, bufsize, width, bytes, x_offset, y_offset + curve_start_offset, globals.steps[LEFT], delta, j); /* use to be -j - 1 */ lighten_left_bump (buffer, bufsize, width, bytes, x_offset, y_offset + curve_start_offset, globals.steps[LEFT], delta, j); delta -= sigma; } } px[0] = px[3] = x_offset; px[1] = x_offset + WALL_XFACTOR2 * tile_width * FUDGE; px[2] = x_offset + WALL_XFACTOR3 * tile_width * FUDGE; py[0] = y_offset + curve_end_offset; py[1] = y_offset + curve_end_offset + WALL_YCONS2 * tile_height; py[2] = y_offset + curve_end_offset + WALL_YCONS3 * tile_height; py[3] = globals.gridy[i]; if (right) { px[1] = x_offset - WALL_XFACTOR2 * tile_width; px[2] = x_offset - WALL_XFACTOR3 * tile_width; } generate_bezier (px, py, steps, cachex, cachey); draw_bezier_line (buffer, bufsize, width, bytes, steps, cachex, cachey); delta = blend_amount; for (j = 0; j < blend_lines; j++) { px[0] = -j - 1; darken_bezier_line (buffer, bufsize, width, bytes, px[0], 0, steps, cachex, cachey, delta); px[0] = j + 1; lighten_bezier_line (buffer, bufsize, width, bytes, px[0], 0, steps, cachex, cachey, delta); delta -= sigma; } y_offset = globals.gridy[i]; } /* for */ g_free(cachex); g_free(cachey); } static void draw_bezier_horizontal_border (guchar *buffer, gint bufsize, gint width, gint height, gint bytes, gint y_offset, gint xtiles, gint ytiles, gint blend_lines, gdouble blend_amount, gint steps) { gint i, j; gint tile_width = width / xtiles; gint tile_height = height / ytiles; gint tile_width_eighth = tile_width / 8; gint curve_start_offset = 3 * tile_width_eighth; gint curve_end_offset = curve_start_offset + 2 * tile_width_eighth; gint px[4], py[4]; gint x_offset = 0; gdouble delta; gdouble sigma = blend_amount / blend_lines; gint up; gint *cachex, *cachey; cachex = g_new (gint, steps); cachey = g_new (gint, steps); for (i = 0; i < xtiles; i++) { up = g_random_int_range (0, 2); px[0] = x_offset; px[1] = x_offset + WALL_XCONS2 * tile_width; px[2] = x_offset + WALL_XCONS3 * tile_width; px[3] = x_offset + curve_start_offset; py[0] = py[3] = y_offset; py[1] = y_offset + WALL_YFACTOR2 * tile_height * FUDGE; py[2] = y_offset + WALL_YFACTOR3 * tile_height * FUDGE; if (!up) { py[1] = y_offset - WALL_YFACTOR2 * tile_height; py[2] = y_offset - WALL_YFACTOR3 * tile_height; } generate_bezier (px, py, steps, cachex, cachey); draw_bezier_line (buffer, bufsize, width, bytes, steps, cachex, cachey); delta = blend_amount; for (j = 0; j < blend_lines; j++) { py[0] = -j - 1; darken_bezier_line (buffer, bufsize, width, bytes, 0, py[0], steps, cachex, cachey, delta); py[0] = j + 1; lighten_bezier_line (buffer, bufsize, width, bytes, 0, py[0], steps, cachex, cachey, delta); delta -= sigma; } /* bumps */ if (up) { draw_up_bump (buffer, bufsize, width, bytes, y_offset, x_offset + curve_start_offset, globals.steps[UP]); delta = blend_amount; for (j = 0; j < blend_lines; j++) { /* use to be -j -1 */ darken_up_bump (buffer, bufsize, width, bytes, y_offset, x_offset + curve_start_offset, globals.steps[UP], delta, j); /* use to be +j + 1 */ lighten_up_bump (buffer, bufsize, width, bytes, y_offset, x_offset + curve_start_offset, globals.steps[UP], delta, j); delta -= sigma; } } else { draw_down_bump (buffer, bufsize, width, bytes, y_offset, x_offset + curve_start_offset, globals.steps[DOWN]); delta = blend_amount; for (j = 0; j < blend_lines; j++) { /* use to be +j + 1 */ darken_down_bump (buffer, bufsize, width, bytes, y_offset, x_offset + curve_start_offset, globals.steps[DOWN], delta, j); /* use to be -j -1 */ lighten_down_bump (buffer, bufsize, width, bytes, y_offset, x_offset + curve_start_offset, globals.steps[DOWN], delta, j); delta -= sigma; } } /* ending side wall line */ px[0] = x_offset + curve_end_offset; px[1] = x_offset + curve_end_offset + WALL_XCONS2 * tile_width; px[2] = x_offset + curve_end_offset + WALL_XCONS3 * tile_width; px[3] = globals.gridx[i]; py[0] = py[3] = y_offset; py[1] = y_offset + WALL_YFACTOR2 * tile_height * FUDGE; py[2] = y_offset + WALL_YFACTOR3 * tile_height * FUDGE; if (!up) { py[1] = y_offset - WALL_YFACTOR2 * tile_height; py[2] = y_offset - WALL_YFACTOR3 * tile_height; } generate_bezier (px, py, steps, cachex, cachey); draw_bezier_line (buffer, bufsize, width, bytes, steps, cachex, cachey); delta = blend_amount; for (j = 0; j < blend_lines; j++) { py[0] = -j - 1; darken_bezier_line (buffer, bufsize, width, bytes, 0, py[0], steps, cachex, cachey, delta); py[0] = j + 1; lighten_bezier_line (buffer, bufsize, width, bytes, 0, py[0], steps, cachex, cachey, delta); delta -= sigma; } x_offset = globals.gridx[i]; } /* for */ g_free(cachex); g_free(cachey); } static void check_config (gint width, gint height) { gint tile_width, tile_height; gint tile_width_limit, tile_height_limit; if (config.x < 1) { config.x = 1; } if (config.y < 1) { config.y = 1; } if (config.blend_amount < 0) { config.blend_amount = 0; } if (config.blend_amount > 5) { config.blend_amount = 5; } tile_width = width / config.x; tile_height = height / config.y; tile_width_limit = 0.4 * tile_width; tile_height_limit = 0.4 * tile_height; if ((config.blend_lines > tile_width_limit) || (config.blend_lines > tile_height_limit)) { config.blend_lines = MIN(tile_width_limit, tile_height_limit); } } /******************************************************** GUI ********************************************************/ static gboolean jigsaw_dialog (guint32 drawable_id) { GtkWidget *dialog; GtkWidget *main_vbox; GtkWidget *preview; GtkSizeGroup *group; GtkWidget *frame; GtkWidget *rbutton1; GtkWidget *rbutton2; GtkWidget *table; GtkObject *adj; gboolean run; gimp_ui_init (PLUG_IN_BINARY, TRUE); dialog = gimp_dialog_new (_("Jigsaw"), 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 (dialog), GTK_RESPONSE_OK, GTK_RESPONSE_CANCEL, -1); gimp_window_set_transient (GTK_WINDOW (dialog)); main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12); gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12); gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))), main_vbox, TRUE, TRUE, 0); gtk_widget_show (main_vbox); preview = gimp_aspect_preview_new_from_drawable_id (drawable_id); gtk_box_pack_start (GTK_BOX (main_vbox), preview, TRUE, TRUE, 0); gtk_widget_show (preview); g_signal_connect_swapped (preview, "invalidated", G_CALLBACK (jigsaw_preview), GINT_TO_POINTER (drawable_id)); frame = gimp_frame_new (_("Number of Tiles")); gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0); table = gtk_table_new (2, 3, 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); group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL); /* xtiles */ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0, _("_Horizontal:"), SCALE_WIDTH, 0, config.x, MIN_XTILES, MAX_XTILES, 1.0, 4.0, 0, TRUE, 0, 0, _("Number of pieces going across"), NULL); gtk_size_group_add_widget (group, GIMP_SCALE_ENTRY_LABEL (adj)); g_object_unref (group); g_signal_connect (adj, "value-changed", G_CALLBACK (gimp_int_adjustment_update), &config.x); g_signal_connect_swapped (adj, "value-changed", G_CALLBACK (gimp_preview_invalidate), preview); /* ytiles */ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1, _("_Vertical:"), SCALE_WIDTH, 0, config.y, MIN_YTILES, MAX_YTILES, 1.0, 4.0, 0, TRUE, 0, 0, _("Number of pieces going down"), NULL); gtk_size_group_add_widget (group, GIMP_SCALE_ENTRY_LABEL (adj)); g_signal_connect (adj, "value-changed", G_CALLBACK (gimp_int_adjustment_update), &config.y); g_signal_connect_swapped (adj, "value-changed", G_CALLBACK (gimp_preview_invalidate), preview); gtk_widget_show (table); gtk_widget_show (frame); frame = gimp_frame_new (_("Bevel Edges")); gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0); table = gtk_table_new (2, 3, 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); /* number of blending lines */ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0, _("_Bevel width:"), SCALE_WIDTH, 4, config.blend_lines, MIN_BLEND_LINES, MAX_BLEND_LINES, 1.0, 2.0, 0, TRUE, 0, 0, _("Degree of slope of each piece's edge"), NULL); gtk_size_group_add_widget (group, GIMP_SCALE_ENTRY_LABEL (adj)); g_signal_connect (adj, "value-changed", G_CALLBACK (gimp_int_adjustment_update), &config.blend_lines); g_signal_connect_swapped (adj, "value-changed", G_CALLBACK (gimp_preview_invalidate), preview); /* blending amount */ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1, _("H_ighlight:"), SCALE_WIDTH, 4, config.blend_amount, MIN_BLEND_AMOUNT, MAX_BLEND_AMOUNT, 0.05, 0.1, 2, TRUE, 0, 0, _("The amount of highlighting on the edges " "of each piece"), NULL); gtk_size_group_add_widget (group, GIMP_SCALE_ENTRY_LABEL (adj)); g_signal_connect (adj, "value-changed", G_CALLBACK (gimp_double_adjustment_update), &config.blend_amount); g_signal_connect_swapped (adj, "value-changed", G_CALLBACK (gimp_preview_invalidate), preview); gtk_widget_show (table); gtk_widget_show (frame); /* frame for primitive radio buttons */ frame = gimp_int_radio_group_new (TRUE, _("Jigsaw Style"), G_CALLBACK (gimp_radio_button_update), &config.style, config.style, _("_Square"), BEZIER_1, &rbutton1, _("C_urved"), BEZIER_2, &rbutton2, NULL); gimp_help_set_help_data (rbutton1, _("Each piece has straight sides"), NULL); gimp_help_set_help_data (rbutton2, _("Each piece has curved sides"), NULL); g_signal_connect_swapped (rbutton1, "toggled", G_CALLBACK (gimp_preview_invalidate), preview); g_signal_connect_swapped (rbutton2, "toggled", G_CALLBACK (gimp_preview_invalidate), preview); gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0); gtk_widget_show (frame); gtk_widget_show (dialog); run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK); gtk_widget_destroy (dialog); return run; }