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More WIP on ASCII art magic tool

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This commit is contained in:
Bill Kendrick 2024-09-25 22:24:54 -07:00
parent e0a34c1c7a
commit 6a591a2ef1
1 changed files with 68 additions and 11 deletions
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79
magic/src/ascii.c
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@ -54,10 +54,12 @@ static Mix_Chunk *ascii_snd[NUM_TOOLS];
* as fixed-width), so we need to keep track of each character's X
* poistion, how many characters there are, and the maximum width.
*/
#define MAX_CHARS 256
SDL_Surface * ascii_bitmap[NUM_TOOLS];
int ascii_char_x[NUM_TOOLS][256];
int ascii_char_x[NUM_TOOLS][MAX_CHARS];
int ascii_num_chars[NUM_TOOLS];
int ascii_char_maxwidth[NUM_TOOLS];
int ascii_char_brightness[NUM_TOOLS][MAX_CHARS];
Uint32 ascii_api_version(void);
int ascii_init(magic_api * api, Uint8 disabled_features, Uint8 complexity_level);
@ -99,7 +101,7 @@ Uint32 ascii_api_version(void)
int ascii_init(magic_api * api, Uint8 disabled_features ATTRIBUTE_UNUSED, Uint8 complexity_level ATTRIBUTE_UNUSED)
{
char fname[1024];
int i, j, x, y, xx, w, num_chars, all_clear;
int i, j, x, y, xx, w, num_chars, all_clear, area, bright;
Uint32 clear_pixel, pixel;
Uint8 r, g, b;
@ -127,7 +129,7 @@ int ascii_init(magic_api * api, Uint8 disabled_features ATTRIBUTE_UNUSED, Uint8
}
clear_pixel = api->getpixel(ascii_bitmap[i], 0, 0);
printf("%s; clear pixel %d\n", fname, clear_pixel);
// printf("%s; clear pixel %d\n", fname, clear_pixel);
num_chars = 0;
for (x = 0; x < ascii_bitmap[i]->w; x++)
{
@ -162,40 +164,63 @@ int ascii_init(magic_api * api, Uint8 disabled_features ATTRIBUTE_UNUSED, Uint8
/* Magenta counts as a connecting pixel, but we
* want it to appear as the clear color */
api->putpixel(ascii_bitmap[i], xx, y, clear_pixel);
printf("x");
// printf("x");
}
else
{
printf("#");
// printf("#");
}
}
else
{
printf("-");
// printf("-");
}
}
printf("\n");
// printf("\n");
}
x = xx;
num_chars++;
printf(".......................................\n");
// printf(".......................................\n");
}
ascii_num_chars[i] = num_chars;
printf("%s has %d characters\n", fname, num_chars);
/* Determine the max. width of any character */
ascii_char_x[i][num_chars] = x;
ascii_char_maxwidth[i] = 0;
for (j = 0; j < num_chars; j++)
{
w = ascii_char_x[i][j + 1] - ascii_char_x[i][j];
printf("%d->%d = %d\n", j, j + 1, w);
// printf("%d->%d = %d\n", j, j + 1, w);
if (w > ascii_char_maxwidth[i])
{
ascii_char_maxwidth[i] = w;
}
}
printf("%s max char width is %d\n", fname, ascii_char_maxwidth[i]);
/* Calculate the intensity of each character */
area = ascii_char_maxwidth[i] * ascii_bitmap[i]->h;
// printf("%s max char width is %d -- * %d = area %d\n", fname, ascii_char_maxwidth[i], ascii_bitmap[i]->h, area);
for (j = 0; j < num_chars; j++)
{
bright = 0;
for (y = 0; y < ascii_bitmap[i]->h; y++)
{
for (x = ascii_char_x[i][j]; x < ascii_char_x[i][j + 1]; x++)
{
pixel = api->getpixel(ascii_bitmap[i], x, y);
SDL_GetRGB(pixel, ascii_bitmap[i]->format, &r, &g, &b);
// printf("%3d ", (r + g + b) / 3);
bright += ((r + g + b) / 3);
}
// printf("\n");
}
// printf("char %d brightness = %d\n", j, bright / area);
ascii_char_brightness[i][j] = bright / area;
}
}
return (1);
@ -203,7 +228,7 @@ int ascii_init(magic_api * api, Uint8 disabled_features ATTRIBUTE_UNUSED, Uint8
int ascii_get_tool_count(magic_api * api ATTRIBUTE_UNUSED)
{
return (1);
return (NUM_TOOLS);
}
SDL_Surface *ascii_get_icon(magic_api * api, int which)
@ -348,4 +373,36 @@ void ascii_set_size(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED
void do_ascii_effect(void *ptr, int which, SDL_Surface * canvas, SDL_Surface * last, int x, int y)
{
magic_api *api = (magic_api *) ptr;
int w, h, n;
Uint32 clear_pixel;
SDL_Rect src, dest;
w = ascii_char_maxwidth[which];
h = ascii_bitmap[which]->h;
x = (x / w) * w;
y = (y / h) * h;
if (!api->touched(x, y))
{
clear_pixel = api->getpixel(ascii_bitmap[which], 0, 0);
dest.x = x;
dest.y = y;
dest.w = w;
dest.h = h;
SDL_FillRect(canvas, &dest, clear_pixel);
n = rand() % ascii_num_chars[which];
src.x = ascii_char_x[which][n];
src.y = 0;
src.w = ascii_char_x[which][n + 1] - ascii_char_x[which][n];
src.h = h;
dest.x = x + (w - src.w) / 2;
dest.y = y;
SDL_BlitSurface(ascii_bitmap[which], &src, canvas, &dest);
}
}