253 lines
8.3 KiB
C
253 lines
8.3 KiB
C
/*
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ripples.c
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Ripples Magic Tool Plugin
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Tux Paint - A simple drawing program for children.
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Copyright (c) 2002-2024 by Bill Kendrick and others; see AUTHORS.txt
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bill@newbreedsoftware.com
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https://tuxpaint.org/
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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: January 16, 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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#include <math.h>
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/* Our globals: */
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static Mix_Chunk *ripples_snd;
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static int ripples_z, ripples_brite;
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static float ripples_radius = 100;
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Uint32 ripples_api_version(void);
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int ripples_init(magic_api * api, Uint8 disabled_features, Uint8 complexity_level);
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int ripples_get_tool_count(magic_api * api);
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SDL_Surface *ripples_get_icon(magic_api * api, int which);
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char *ripples_get_name(magic_api * api, int which);
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int ripples_get_group(magic_api * api, int which);
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int ripples_get_order(int which);
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char *ripples_get_description(magic_api * api, int which, int mode);
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void ripples_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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static void ripples_linecb(void *ptr, int which, SDL_Surface * canvas, SDL_Surface * last, int x, int y);
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void ripples_click(magic_api * api, int which, int mode, SDL_Surface * canvas,
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SDL_Surface * last, int x, int y, SDL_Rect * update_rect);
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void ripples_release(magic_api * api, int which, SDL_Surface * canvas,
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SDL_Surface * last, int x, int y, SDL_Rect * update_rect);
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void ripples_shutdown(magic_api * api);
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void ripples_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 ripples_requires_colors(magic_api * api, int which);
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void ripples_switchin(magic_api * api, int which, int mode, SDL_Surface * canvas);
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void ripples_switchout(magic_api * api, int which, int mode, SDL_Surface * canvas);
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int ripples_modes(magic_api * api, int which);
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Uint8 ripples_accepted_sizes(magic_api * api, int which, int mode);
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Uint8 ripples_default_size(magic_api * api, int which, int mode);
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void ripples_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 ripples_api_version(void)
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{
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return (TP_MAGIC_API_VERSION);
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}
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#define deg_cos(x) cos((x) * M_PI / 180.0)
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#define deg_sin(x) sin((x) * M_PI / 180.0)
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int ripples_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/ripples.ogg", api->data_directory);
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ripples_snd = Mix_LoadWAV(fname);
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return (1);
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}
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int ripples_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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// Load our icons:
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SDL_Surface *ripples_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/ripples.png", api->data_directory);
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return (IMG_Load(fname));
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}
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// Return our names, localized:
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char *ripples_get_name(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
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{
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return (strdup(gettext_noop("Ripples")));
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}
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// Return our groups:
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int ripples_get_group(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
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{
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return MAGIC_TYPE_DISTORTS;
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}
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// Return our order:
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int ripples_get_order(int which ATTRIBUTE_UNUSED)
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{
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return 401;
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}
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// Return our descriptions, localized:
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char *ripples_get_description(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED)
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{
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return (strdup(gettext_noop("Click to make ripples appear over your picture.")));
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}
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// Affect the canvas on drag:
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void ripples_drag(magic_api * api ATTRIBUTE_UNUSED,
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int which ATTRIBUTE_UNUSED,
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SDL_Surface * canvas ATTRIBUTE_UNUSED,
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SDL_Surface * last ATTRIBUTE_UNUSED,
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int ox ATTRIBUTE_UNUSED, int oy ATTRIBUTE_UNUSED,
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int x ATTRIBUTE_UNUSED, int y ATTRIBUTE_UNUSED, SDL_Rect * update_rect ATTRIBUTE_UNUSED)
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{
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}
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static void ripples_linecb(void *ptr, int which ATTRIBUTE_UNUSED,
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SDL_Surface * canvas, SDL_Surface * last, int x, int y)
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{
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magic_api *api = (magic_api *) ptr;
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Uint8 r, g, b;
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Uint32 pix;
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pix = api->getpixel(last, x + ripples_z, y + ripples_z);
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SDL_GetRGB(pix, last->format, &r, &g, &b);
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r = max(0, min(255, r + ripples_brite));
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g = max(0, min(255, g + ripples_brite));
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b = max(0, min(255, b + ripples_brite));
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api->putpixel(canvas, x, y, SDL_MapRGB(canvas->format, r, g, b));
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}
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// Affect the canvas on click:
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void ripples_click(magic_api * api, int which, int mode ATTRIBUTE_UNUSED,
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SDL_Surface * canvas, SDL_Surface * last, int x, int y, SDL_Rect * update_rect)
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{
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float fli;
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int ox, oy, nx, ny, d;
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for (fli = 0; fli < ripples_radius; fli = fli + .25)
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{
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ripples_z = (10 * deg_sin(((powf(ripples_radius / 2.0, 2)) / (fli + 4)) * 10));
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ox = fli * deg_cos(0) + x;
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oy = -fli * deg_sin(0) + y;
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for (d = 0; d <= 360 + (360 / (fli + 1)); d = d + 360 / (fli + 1))
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{
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nx = fli * deg_cos(d) + x;
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ny = -fli * deg_sin(d) + y;
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ripples_brite = (ripples_z * 20 * deg_sin(d + 45)) / ((fli / 4) + 1);
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api->line((void *)api, which, canvas, last, ox, oy, nx, ny, 1, ripples_linecb);
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ox = nx;
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oy = ny;
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}
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}
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update_rect->x = x - (int)ripples_radius;
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update_rect->y = y - (int)ripples_radius;
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update_rect->w = ((int)ripples_radius) * 2;
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update_rect->h = ((int)ripples_radius) * 2;
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api->playsound(ripples_snd, (x * 255) / api->canvas_w, 255);
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}
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// Affect the canvas on release:
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void ripples_release(magic_api * api ATTRIBUTE_UNUSED,
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int which ATTRIBUTE_UNUSED,
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SDL_Surface * canvas ATTRIBUTE_UNUSED,
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SDL_Surface * last ATTRIBUTE_UNUSED,
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int x ATTRIBUTE_UNUSED, int y ATTRIBUTE_UNUSED, SDL_Rect * update_rect ATTRIBUTE_UNUSED)
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{
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}
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// No setup happened:
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void ripples_shutdown(magic_api * api ATTRIBUTE_UNUSED)
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{
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if (ripples_snd != NULL)
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Mix_FreeChunk(ripples_snd);
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}
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// Record the color from Tux Paint:
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void ripples_set_color(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED,
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SDL_Surface * canvas ATTRIBUTE_UNUSED, SDL_Surface * last ATTRIBUTE_UNUSED,
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Uint8 r ATTRIBUTE_UNUSED, Uint8 g ATTRIBUTE_UNUSED, Uint8 b ATTRIBUTE_UNUSED,
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SDL_Rect * update_rect ATTRIBUTE_UNUSED)
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{
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}
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// Use colors:
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int ripples_requires_colors(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
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{
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return 0;
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}
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void ripples_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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}
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void ripples_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 ripples_modes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
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{
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return (MODE_ONECLICK);
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}
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Uint8 ripples_accepted_sizes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED)
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{
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return 10;
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}
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Uint8 ripples_default_size(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED)
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{
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return 5;
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}
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void ripples_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, Uint8 size,
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SDL_Rect * update_rect ATTRIBUTE_UNUSED)
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{
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ripples_radius = ((float)size) * 20.0;
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}
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