WIP "Tessellation" magic tool
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Bill Kendrick
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6f58ce7520
commit
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4 changed files with 249 additions and 4 deletions
235
magic/src/tessell.c
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235
magic/src/tessell.c
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/*
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tessell.c
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Repeats what you draw in a tessellating pattern around
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the canvas.
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Tux Paint - A simple drawing program for children.
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Copyright (c) 2024 by Bill Kendrick
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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(See COPYING.txt)
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Last updated: October 8, 2024
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*/
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#include <stdio.h>
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#include <string.h>
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#include "tp_magic_api.h"
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#include "SDL_image.h"
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#include "SDL_mixer.h"
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#define REPEAT_CNT 3
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#define SIN_60DEG 0.866025403784439
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static Mix_Chunk *tessell_snd;
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static int tessell_radius = 16, tessell_width, tessell_height;
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static Uint32 tessell_color;
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Uint32 tessell_api_version(void);
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int tessell_init(magic_api * api, Uint8 disabled_features, Uint8 complexity_level);
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int tessell_get_tool_count(magic_api * api);
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SDL_Surface *tessell_get_icon(magic_api * api, int which);
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char *tessell_get_name(magic_api * api, int which);
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int tessell_get_group(magic_api * api, int which);
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int tessell_get_order(int which);
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char *tessell_get_description(magic_api * api, int which, int mode);
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void tessell_drag(magic_api * api, int which, SDL_Surface * canvas,
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SDL_Surface * last, int ox, int oy, int x, int y, SDL_Rect * update_rect);
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void tessell_click(magic_api * api, int which, int mode,
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SDL_Surface * canvas, SDL_Surface * last, int x, int y, SDL_Rect * update_rect);
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void tessell_release(magic_api * api, int which,
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SDL_Surface * canvas, SDL_Surface * last, int x, int y, SDL_Rect * update_rect);
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void tessell_shutdown(magic_api * api);
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void tessell_set_color(magic_api * api, int which, SDL_Surface * canvas,
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SDL_Surface * last, Uint8 r, Uint8 g, Uint8 b, SDL_Rect * update_rect);
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int tessell_requires_colors(magic_api * api, int which);
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void tessell_switchin(magic_api * api, int which, int mode, SDL_Surface * canvas);
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void tessell_switchout(magic_api * api, int which, int mode, SDL_Surface * canvas);
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int tessell_modes(magic_api * api, int which);
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Uint8 tessell_accepted_sizes(magic_api * api, int which, int mode);
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Uint8 tessell_default_size(magic_api * api, int which, int mode);
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void tessell_set_size(magic_api * api, int which, int mode, SDL_Surface * canvas, SDL_Surface * last, Uint8 size,
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SDL_Rect * update_rect);
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Uint32 tessell_api_version(void)
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{
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return (TP_MAGIC_API_VERSION);
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}
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int tessell_init(magic_api * api, Uint8 disabled_features ATTRIBUTE_UNUSED, Uint8 complexity_level ATTRIBUTE_UNUSED)
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{
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char fname[1024];
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snprintf(fname, sizeof(fname), "%ssounds/magic/xor.ogg", api->data_directory); // FIXME
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tessell_snd = Mix_LoadWAV(fname);
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return (1);
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}
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int tessell_get_tool_count(magic_api * api ATTRIBUTE_UNUSED)
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{
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return (1);
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}
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SDL_Surface *tessell_get_icon(magic_api * api, int which ATTRIBUTE_UNUSED)
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{
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char fname[1024];
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snprintf(fname, sizeof(fname), "%simages/magic/xor.png", api->data_directory); // FIXME
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return (IMG_Load(fname));
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}
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char *tessell_get_name(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
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{
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return (strdup(gettext("Tessellation")));
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}
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int tessell_get_group(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
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{
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return MAGIC_TYPE_PAINTING;
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}
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int tessell_get_order(int which ATTRIBUTE_UNUSED)
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{
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return 800;
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}
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char *tessell_get_description(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode)
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{
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return (strdup(gettext("Click and drag to draw a repeating tessellating pattern.")));
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}
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static void do_tessell_circle(void *ptr, int which ATTRIBUTE_UNUSED,
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SDL_Surface * canvas, SDL_Surface * last ATTRIBUTE_UNUSED, int x, int y)
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{
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int xx, yy, rx, ry, sx, sy;
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magic_api *api = (magic_api *) ptr;
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for (yy = -tessell_radius; yy <= tessell_radius; yy++)
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{
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for (xx = -tessell_radius; xx <= tessell_radius; xx++)
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{
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if (api->in_circle(xx, yy, tessell_radius))
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{
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for (ry = -REPEAT_CNT; ry <= REPEAT_CNT; ry++)
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{
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for (rx = -REPEAT_CNT; rx <= REPEAT_CNT; rx++)
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{
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sx = rx * tessell_width;
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if (abs(ry) % 2 == 1)
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sx += tessell_width / 2;
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sy = ry * tessell_height;
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api->putpixel(canvas, x + xx + sx, y + yy + sy, tessell_color);
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}
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}
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}
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}
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}
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}
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void tessell_drag(magic_api * api, int which, SDL_Surface * canvas,
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SDL_Surface * last ATTRIBUTE_UNUSED, int ox, int oy, int x, int y, SDL_Rect * update_rect)
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{
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api->line((void *)api, which, canvas, last, ox, oy, x, y, 1, do_tessell_circle);
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update_rect->x = 0;
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update_rect->y = 0;
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update_rect->w = canvas->w;
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update_rect->h = canvas->h;
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api->playsound(tessell_snd, (x * 255) / canvas->w, 255);
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}
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void tessell_click(magic_api * api, int which, int mode,
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SDL_Surface * canvas, SDL_Surface * last ATTRIBUTE_UNUSED, int x, int y, SDL_Rect * update_rect)
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{
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tessell_drag(api, which, canvas, last, x, y, x, y, update_rect);
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}
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void tessell_release(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED,
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SDL_Surface * canvas ATTRIBUTE_UNUSED,
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SDL_Surface * last ATTRIBUTE_UNUSED, int x ATTRIBUTE_UNUSED,
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int y ATTRIBUTE_UNUSED, SDL_Rect * update_rect ATTRIBUTE_UNUSED)
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{
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}
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void tessell_shutdown(magic_api * api ATTRIBUTE_UNUSED)
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{
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if (tessell_snd != NULL)
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Mix_FreeChunk(tessell_snd);
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}
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void tessell_set_color(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, SDL_Surface * canvas ATTRIBUTE_UNUSED,
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SDL_Surface * last ATTRIBUTE_UNUSED, Uint8 r, Uint8 g,
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Uint8 b, SDL_Rect * update_rect ATTRIBUTE_UNUSED)
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{
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tessell_color = SDL_MapRGB(canvas->format, r, g, b);
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}
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int tessell_requires_colors(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
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{
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return 1;
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}
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void tessell_switchin(magic_api * api ATTRIBUTE_UNUSED,
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int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED, SDL_Surface * canvas ATTRIBUTE_UNUSED)
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{
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int tessell_mult;
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if (canvas->w > canvas->h)
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tessell_mult = canvas->w / (REPEAT_CNT + 1);
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else
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tessell_mult = canvas->h / (REPEAT_CNT + 1);
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tessell_width = tessell_mult;
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tessell_height = tessell_mult * SIN_60DEG;
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}
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void tessell_switchout(magic_api * api ATTRIBUTE_UNUSED,
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int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED, SDL_Surface * canvas ATTRIBUTE_UNUSED)
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{
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}
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int tessell_modes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
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{
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return MODE_PAINT;
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}
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Uint8 tessell_accepted_sizes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode)
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{
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return 8;
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}
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Uint8 tessell_default_size(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED)
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{
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return 2;
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}
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void tessell_set_size(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED,
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SDL_Surface * canvas ATTRIBUTE_UNUSED, SDL_Surface * last ATTRIBUTE_UNUSED,
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Uint8 size ATTRIBUTE_UNUSED, SDL_Rect * update_rect ATTRIBUTE_UNUSED)
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{
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tessell_radius = size;
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}
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