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WIP: Splitting 3D Glasses out of Color Sep...

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...and supporting any arbitrary color with Color Sep. tool.
This commit is contained in:
Bill Kendrick 2023-02-22 21:00:41 -08:00
parent dae753c24e
commit 4eb834641d
1 changed files with 71 additions and 46 deletions
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111
magic/src/colorsep.c
View file

@ -3,7 +3,7 @@
Color separation effect (a la red/cyan aka red/blue 3D glasses).
Bill Kendrick
Last updated: February 21, 2023
Last updated: February 22, 2023
*/
#include <stdio.h>
@ -16,14 +16,33 @@
#include "SDL_mixer.h"
enum {
COLORSEP_MODE_RED_CYAN,
COLORSEP_MODE_GREEN_PURPLE,
COLORSEP_MODE_BLUE_YELLOW
COLORSEP_TOOL_3DGLASSES,
COLORSEP_TOOL_COLORSEP,
NUM_TOOLS
};
Mix_Chunk *snd_effect = NULL;
static char * colorsep_snd_filenames[NUM_TOOLS] = {
"colorsep.ogg", /* FIXME */
"colorsep.ogg"
};
static char * colorsep_icon_filenames[NUM_TOOLS] = {
"colorsep.png", /* FIXME */
"colorsep.png"
};
char * colorsep_names[NUM_TOOLS] = {
gettext_noop("3D Glasses"),
gettext_noop("Color Sep."),
};
char * colorsep_descrs[NUM_TOOLS] = {
gettext_noop("Click and drag left and right to separate your picture's red and cyan, to make anaglyphs you can view with 3D glasses!"),
gettext_noop("Click and drag to separate your picture's colors.")
};
Mix_Chunk *snd_effects[NUM_TOOLS];
int colorsep_click_x, colorsep_click_y;
int colorsep_mode = COLORSEP_MODE_RED_CYAN;
float colorsep_r_pct, colorsep_g_pct, colorsep_b_pct;
Uint32 colorsep_api_version(void);
int colorsep_init(magic_api * api);
@ -59,35 +78,38 @@ Uint32 colorsep_api_version(void)
int colorsep_init(magic_api * api)
{
int i;
char fname[1024];
snprintf(fname, sizeof(fname), "%ssounds/magic/colorsep.ogg",
api->data_directory);
snd_effect = Mix_LoadWAV(fname);
for (i = 0; i < NUM_TOOLS; i++) {
snprintf(fname, sizeof(fname), "%ssounds/magic/%s",
api->data_directory, colorsep_snd_filenames[i]);
snd_effects[i] = Mix_LoadWAV(fname);
}
return (1);
}
int colorsep_get_tool_count(magic_api * api ATTRIBUTE_UNUSED)
{
return (1);
return (NUM_TOOLS);
}
SDL_Surface *colorsep_get_icon(magic_api * api, int which ATTRIBUTE_UNUSED)
SDL_Surface *colorsep_get_icon(magic_api * api, int which)
{
char fname[1024];
snprintf(fname, sizeof(fname), "%simages/magic/colorsep.png",
api->data_directory);
snprintf(fname, sizeof(fname), "%simages/magic/%s",
api->data_directory, colorsep_icon_filenames[which]);
return (IMG_Load(fname));
}
char *colorsep_get_name(magic_api * api ATTRIBUTE_UNUSED,
int which ATTRIBUTE_UNUSED)
int which)
{
return strdup(gettext("Color Sep."));
return strdup(gettext(colorsep_names[which]));
}
int colorsep_get_group(magic_api * api ATTRIBUTE_UNUSED,
@ -97,15 +119,18 @@ int colorsep_get_group(magic_api * api ATTRIBUTE_UNUSED,
}
char *colorsep_get_description(magic_api * api ATTRIBUTE_UNUSED,
int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED)
int which, int mode ATTRIBUTE_UNUSED)
{
return strdup(gettext("Click and drag to separate your picture's colors (based on your color choice: red from cyan, green from purple, or blue from yellow)."));
return strdup(gettext(colorsep_descrs[which]));
}
int colorsep_requires_colors(magic_api * api ATTRIBUTE_UNUSED,
int which ATTRIBUTE_UNUSED)
{
if (which == COLORSEP_TOOL_COLORSEP)
return 1;
else
return 0;
}
int colorsep_modes(magic_api * api ATTRIBUTE_UNUSED,
@ -116,8 +141,12 @@ int colorsep_modes(magic_api * api ATTRIBUTE_UNUSED,
void colorsep_shutdown(magic_api * api ATTRIBUTE_UNUSED)
{
if (snd_effect != NULL)
Mix_FreeChunk(snd_effect);
int i;
for (i = 0; i < NUM_TOOLS; i++) {
if (snd_effects[i] != NULL)
Mix_FreeChunk(snd_effects[i]);
}
}
void
@ -125,7 +154,6 @@ colorsep_click(magic_api * api, int which, int mode ATTRIBUTE_UNUSED,
SDL_Surface * canvas, SDL_Surface * snapshot, int x, int y,
SDL_Rect * update_rect)
{
if (snd_effect != NULL)
api->stopsound();
/* (Start off as if they clicked off to the side a little, so that
@ -137,30 +165,32 @@ colorsep_click(magic_api * api, int which, int mode ATTRIBUTE_UNUSED,
void
colorsep_drag(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, SDL_Surface * canvas,
colorsep_drag(magic_api * api ATTRIBUTE_UNUSED, int which, SDL_Surface * canvas,
SDL_Surface * snapshot, int ox ATTRIBUTE_UNUSED, int oy ATTRIBUTE_UNUSED,
int x, int y, SDL_Rect * update_rect)
{
int xx, yy, offset_x, offset_y;
Uint8 r1, g1, b1, r2, g2, b2;
Uint8 r1, g1, b1, r2, g2, b2, r, g, b;
offset_x = colorsep_click_x - x;
if (which == COLORSEP_TOOL_3DGLASSES) {
offset_y = 0;
} else {
offset_y = colorsep_click_y - y;
}
api->playsound(snd_effect, (((-offset_x * 255) / canvas->w) + 128), 255);
api->playsound(snd_effects[which], (((-offset_x * 255) / canvas->w) + 128), 255);
for (yy = 0; yy < canvas->h; yy++) {
for (xx = 0; xx < canvas->w; xx++) {
SDL_GetRGB(api->getpixel(snapshot, xx + offset_x / 2, yy + offset_y / 2), snapshot->format, &r1, &g1, &b1);
SDL_GetRGB(api->getpixel(snapshot, xx - offset_x / 2, yy - offset_y / 2), snapshot->format, &r2, &g2, &b2);
if (colorsep_mode == COLORSEP_MODE_RED_CYAN) {
api->putpixel(canvas, xx, yy, SDL_MapRGB(canvas->format, r1, g2, b2));
} else if (colorsep_mode == COLORSEP_MODE_GREEN_PURPLE) {
api->putpixel(canvas, xx, yy, SDL_MapRGB(canvas->format, r2, g1, b2));
} else if (colorsep_mode == COLORSEP_MODE_BLUE_YELLOW) {
api->putpixel(canvas, xx, yy, SDL_MapRGB(canvas->format, r2, g2, b1));
}
r = (Uint8) ((float) r1 * colorsep_r_pct) + ((float) r2 * (1.0 - colorsep_r_pct));
g = (Uint8) ((float) g1 * colorsep_g_pct) + ((float) g2 * (1.0 - colorsep_g_pct));
b = (Uint8) ((float) b1 * colorsep_b_pct) + ((float) b2 * (1.0 - colorsep_b_pct));
api->putpixel(canvas, xx, yy, SDL_MapRGB(canvas->format, r, g, b));
}
}
@ -186,20 +216,14 @@ void colorsep_set_color(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UN
Uint8 r, Uint8 g, Uint8 b,
SDL_Rect * update_rect ATTRIBUTE_UNUSED)
{
r >>= 4;
g >>= 4;
b >>= 4;
colorsep_r_pct = (float) r / 255.0;
colorsep_g_pct = (float) g / 255.0;
colorsep_b_pct = (float) b / 255.0;
/* If the color chosen is very strong in some colors, separate it */
if ((r > g && r > b) || (b > r && g > r)) {
colorsep_mode = COLORSEP_MODE_RED_CYAN;
} else if ((g > r && g > b) || (r > g && b > g)) {
colorsep_mode = COLORSEP_MODE_GREEN_PURPLE;
} else if ((b > r && b > g) || (r > b && g > b)) {
colorsep_mode = COLORSEP_MODE_BLUE_YELLOW;
} else {
/* No winner? Default to the most comment, red/cyan */
colorsep_mode = COLORSEP_MODE_RED_CYAN;
if (colorsep_r_pct == colorsep_g_pct && colorsep_r_pct == colorsep_b_pct) {
colorsep_r_pct = 1.0;
colorsep_g_pct = 0.0;
colorsep_b_pct = 0.0;
}
}
@ -216,3 +240,4 @@ void colorsep_switchout(magic_api * api ATTRIBUTE_UNUSED,
SDL_Surface * canvas ATTRIBUTE_UNUSED)
{
}