WIP Fractal painter
Not working great yet, but a start
This commit is contained in:
Bill Kendrick
parent
628fa77f94
commit
bb8b1d6cfe
2 changed files with 272 additions and 2 deletions
266
magic/src/fractal.c
Normal file
266
magic/src/fractal.c
Normal file
|
|
@ -0,0 +1,266 @@
|
|||
/*
|
||||
fractal.c
|
||||
|
||||
Freehand paint tree-like, fractal-like patterns.
|
||||
|
||||
Tux Paint - A simple drawing program for children.
|
||||
|
||||
Copyright (c) 2024 by Bill Kendrick
|
||||
|
||||
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 2 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, write to the Free Software
|
||||
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
(See COPYING.txt)
|
||||
|
||||
Last updated: September 19, 2024
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include "tp_magic_api.h"
|
||||
#include "SDL_image.h"
|
||||
#include "SDL_mixer.h"
|
||||
|
||||
typedef struct pt_s {
|
||||
int x, y;
|
||||
} pt_t;
|
||||
|
||||
#define MAX_PTS 1000
|
||||
pt_t pts[MAX_PTS];
|
||||
int num_pts = 0;
|
||||
|
||||
static Mix_Chunk *fractal_snd;
|
||||
static int fractal_radius = 16;
|
||||
int fractal_radius_cur;
|
||||
Uint32 fractal_color;
|
||||
|
||||
Uint32 fractal_api_version(void);
|
||||
int fractal_init(magic_api * api, Uint8 disabled_features, Uint8 complexity_level);
|
||||
int fractal_get_tool_count(magic_api * api);
|
||||
SDL_Surface *fractal_get_icon(magic_api * api, int which);
|
||||
char *fractal_get_name(magic_api * api, int which);
|
||||
int fractal_get_group(magic_api * api, int which);
|
||||
int fractal_get_order(int which);
|
||||
char *fractal_get_description(magic_api * api, int which, int mode);
|
||||
|
||||
void fractal_drag(magic_api * api, int which, SDL_Surface * canvas,
|
||||
SDL_Surface * last, int ox, int oy, int x, int y, SDL_Rect * update_rect);
|
||||
|
||||
void fractal_click(magic_api * api, int which, int mode,
|
||||
SDL_Surface * canvas, SDL_Surface * last, int x, int y, SDL_Rect * update_rect);
|
||||
|
||||
void fractal_release(magic_api * api, int which,
|
||||
SDL_Surface * canvas, SDL_Surface * last, int x, int y, SDL_Rect * update_rect);
|
||||
|
||||
void fractal_shutdown(magic_api * api);
|
||||
void fractal_set_color(magic_api * api, int which, SDL_Surface * canvas,
|
||||
SDL_Surface * last, Uint8 r, Uint8 g, Uint8 b, SDL_Rect * update_rect);
|
||||
int fractal_requires_colors(magic_api * api, int which);
|
||||
void fractal_switchin(magic_api * api, int which, int mode, SDL_Surface * canvas);
|
||||
void fractal_switchout(magic_api * api, int which, int mode, SDL_Surface * canvas);
|
||||
int fractal_modes(magic_api * api, int which);
|
||||
Uint8 fractal_accepted_sizes(magic_api * api, int which, int mode);
|
||||
Uint8 fractal_default_size(magic_api * api, int which, int mode);
|
||||
void fractal_set_size(magic_api * api, int which, int mode, SDL_Surface * canvas, SDL_Surface * last, Uint8 size,
|
||||
SDL_Rect * update_rect);
|
||||
void do_fractal(magic_api * api, int which, SDL_Surface * canvas, int iter, int cx, int cy, float angle, float scale);
|
||||
|
||||
Uint32 fractal_api_version(void)
|
||||
{
|
||||
return (TP_MAGIC_API_VERSION);
|
||||
}
|
||||
|
||||
int fractal_init(magic_api * api, Uint8 disabled_features ATTRIBUTE_UNUSED, Uint8 complexity_level ATTRIBUTE_UNUSED)
|
||||
{
|
||||
char fname[1024];
|
||||
|
||||
snprintf(fname, sizeof(fname), "%ssounds/magic/xor.ogg", api->data_directory); // FIXME
|
||||
fractal_snd = Mix_LoadWAV(fname);
|
||||
|
||||
return (1);
|
||||
}
|
||||
|
||||
int fractal_get_tool_count(magic_api * api ATTRIBUTE_UNUSED)
|
||||
{
|
||||
return (1);
|
||||
}
|
||||
|
||||
SDL_Surface *fractal_get_icon(magic_api * api, int which)
|
||||
{
|
||||
char fname[1024];
|
||||
|
||||
snprintf(fname, sizeof(fname), "%simages/magic/xor.png", api->data_directory); // FIXME
|
||||
|
||||
return (IMG_Load(fname));
|
||||
}
|
||||
|
||||
char *fractal_get_name(magic_api * api ATTRIBUTE_UNUSED, int which)
|
||||
{
|
||||
return (strdup(gettext_noop("Fractals")));
|
||||
}
|
||||
|
||||
int fractal_get_group(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
|
||||
{
|
||||
return MAGIC_TYPE_PAINTING;
|
||||
}
|
||||
|
||||
int fractal_get_order(int which)
|
||||
{
|
||||
return 801;
|
||||
}
|
||||
|
||||
char *fractal_get_description(magic_api * api ATTRIBUTE_UNUSED, int which, int mode ATTRIBUTE_UNUSED)
|
||||
{
|
||||
return (strdup(gettext_noop("Click and drag to draw an \"Exclusive Or\" (XOR) effect"))); // FIXME
|
||||
}
|
||||
|
||||
static void do_fractal_circle(void *ptr, int which ATTRIBUTE_UNUSED,
|
||||
SDL_Surface * canvas, SDL_Surface * last ATTRIBUTE_UNUSED, int x, int y)
|
||||
{
|
||||
magic_api *api = (magic_api *) ptr;
|
||||
int xx, yy;
|
||||
for (yy = -fractal_radius_cur; yy < fractal_radius_cur; yy++)
|
||||
{
|
||||
for (xx = -fractal_radius_cur; xx < fractal_radius_cur; xx++)
|
||||
{
|
||||
if (api->in_circle(xx, yy, fractal_radius_cur))
|
||||
{
|
||||
if (!api->touched(xx + x, yy + y))
|
||||
api->putpixel(canvas, xx + x, yy + y, fractal_color);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void do_fractal(magic_api * api, int which, SDL_Surface * canvas, int iter, int cx, int cy, float angle, float scale)
|
||||
{
|
||||
int i, x1, y1, x2, y2;
|
||||
|
||||
for (i = 0; i < num_pts - 1; i++) {
|
||||
x1 = pts[i].x - cx;
|
||||
y1 = pts[i].y - cy;
|
||||
x2 = pts[i + 1].x - cx;
|
||||
y2 = pts[i + 1].y - cy;
|
||||
|
||||
x1 = x1 * scale;
|
||||
y1 = y1 * scale;
|
||||
x2 = x2 * scale;
|
||||
y2 = y2 * scale;
|
||||
|
||||
x1 = (cos(angle * M_PI / 180.0) * x1) - (sin(angle * M_PI / 180.0) * y1);
|
||||
y1 = (cos(angle * M_PI / 180.0) * y1) + (sin(angle * M_PI / 180.0) * x1);
|
||||
x2 = (cos(angle * M_PI / 180.0) * x2) - (sin(angle * M_PI / 180.0) * y2);
|
||||
y2 = (cos(angle * M_PI / 180.0) * y2) + (sin(angle * M_PI / 180.0) * x2);
|
||||
|
||||
x1 += cx;
|
||||
y1 += cy;
|
||||
x2 += cx;
|
||||
y2 += cy;
|
||||
|
||||
fractal_radius_cur = iter;
|
||||
api->line((void *)api, which, canvas, NULL, x1, y1, x2, y2, 1, do_fractal_circle);
|
||||
}
|
||||
|
||||
if (iter > 1) {
|
||||
angle += 15.0;
|
||||
do_fractal(api, which, canvas, iter - 1, x1, y1, angle, scale * 1.1);
|
||||
}
|
||||
}
|
||||
|
||||
void fractal_drag(magic_api * api, int which, SDL_Surface * canvas,
|
||||
SDL_Surface * last, int ox, int oy, int x, int y, SDL_Rect * update_rect)
|
||||
{
|
||||
if (num_pts < MAX_PTS) {
|
||||
pts[num_pts].x = x;
|
||||
pts[num_pts].y = y;
|
||||
num_pts++;
|
||||
}
|
||||
|
||||
// SDL_BlitSurface(last, NULL, canvas, NULL);
|
||||
|
||||
do_fractal(api, which, canvas, fractal_radius, x, y, 0.0, 1.0);
|
||||
|
||||
update_rect->x = 0;
|
||||
update_rect->y = 0;
|
||||
update_rect->w = canvas->w;
|
||||
update_rect->h = canvas->h;
|
||||
|
||||
api->playsound(fractal_snd, (x * 255) / canvas->w, 255);
|
||||
}
|
||||
|
||||
void fractal_click(magic_api * api, int which, int mode,
|
||||
SDL_Surface * canvas, SDL_Surface * last ATTRIBUTE_UNUSED, int x, int y, SDL_Rect * update_rect)
|
||||
{
|
||||
num_pts = 0;
|
||||
fractal_drag(api, which, canvas, last, x, y, x, y, update_rect);
|
||||
}
|
||||
|
||||
void fractal_release(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED,
|
||||
SDL_Surface * canvas ATTRIBUTE_UNUSED,
|
||||
SDL_Surface * last ATTRIBUTE_UNUSED, int x ATTRIBUTE_UNUSED,
|
||||
int y ATTRIBUTE_UNUSED, SDL_Rect * update_rect ATTRIBUTE_UNUSED)
|
||||
{
|
||||
}
|
||||
|
||||
void fractal_shutdown(magic_api * api ATTRIBUTE_UNUSED)
|
||||
{
|
||||
if (fractal_snd != NULL)
|
||||
Mix_FreeChunk(fractal_snd);
|
||||
}
|
||||
|
||||
void fractal_set_color(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, SDL_Surface * canvas ATTRIBUTE_UNUSED,
|
||||
SDL_Surface * last ATTRIBUTE_UNUSED, Uint8 r, Uint8 g, Uint8 b, SDL_Rect * update_rect ATTRIBUTE_UNUSED)
|
||||
{
|
||||
fractal_color = SDL_MapRGB(canvas->format, r, g, b);
|
||||
}
|
||||
|
||||
int fractal_requires_colors(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
|
||||
{
|
||||
return 1;
|
||||
}
|
||||
|
||||
void fractal_switchin(magic_api * api ATTRIBUTE_UNUSED,
|
||||
int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED, SDL_Surface * canvas ATTRIBUTE_UNUSED)
|
||||
{
|
||||
}
|
||||
|
||||
void fractal_switchout(magic_api * api ATTRIBUTE_UNUSED,
|
||||
int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED, SDL_Surface * canvas ATTRIBUTE_UNUSED)
|
||||
{
|
||||
}
|
||||
|
||||
int fractal_modes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
|
||||
{
|
||||
return (MODE_PAINT);
|
||||
}
|
||||
|
||||
|
||||
Uint8 fractal_accepted_sizes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode)
|
||||
{
|
||||
if (mode == MODE_PAINT)
|
||||
return 8;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
|
||||
Uint8 fractal_default_size(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED)
|
||||
{
|
||||
return 4;
|
||||
}
|
||||
|
||||
void fractal_set_size(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED,
|
||||
SDL_Surface * canvas ATTRIBUTE_UNUSED, SDL_Surface * last ATTRIBUTE_UNUSED,
|
||||
Uint8 size ATTRIBUTE_UNUSED, SDL_Rect * update_rect ATTRIBUTE_UNUSED)
|
||||
{
|
||||
fractal_radius = size + 1;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue