notgne2/tuxpaint-pencil-sharpener
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"ASCII": Accept sizes for painting mode

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...affects 'diameter' (it's really an NxN square) of the effect.
This commit is contained in:
Bill Kendrick 2024-09-27 20:18:10 -07:00
parent bd0cb61dc0
commit c7ce654333
1 changed files with 52 additions and 38 deletions
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90
magic/src/ascii.c
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@ -69,6 +69,8 @@ int ascii_num_chars[NUM_TOOLS];
int ascii_char_maxwidth[NUM_TOOLS];
int ascii_char_brightness[NUM_TOOLS][MAX_CHARS];
SDL_Surface * ascii_snapshot = NULL;
int ascii_size;
Uint32 ascii_api_version(void);
int ascii_init(magic_api * api, Uint8 disabled_features, Uint8 complexity_level);
@ -398,6 +400,10 @@ void ascii_switchin(magic_api * api ATTRIBUTE_UNUSED,
if (ascii_snapshot != NULL)
{
/* FIXME: When switching from PAINT to FULLSCREEN mode,
* we switch out & back in, which means we take a fresh
* snapshot even though we didn't leave the overall tool,
* which is less than ideal. -bjk 2024.09.27 */
SDL_BlitSurface(canvas, NULL, ascii_snapshot, NULL);
}
}
@ -415,24 +421,28 @@ int ascii_modes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
Uint8 ascii_accepted_sizes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED)
{
return 0;
return 6;
}
Uint8 ascii_default_size(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED)
Uint8 ascii_default_size(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode)
{
if (mode == MODE_PAINT)
return 3;
return 0;
}
void ascii_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)
Uint8 size, SDL_Rect * update_rect ATTRIBUTE_UNUSED)
{
ascii_size = size;
}
void do_ascii_effect(void *ptr, int which, SDL_Surface * canvas, SDL_Surface * last ATTRIBUTE_UNUSED, int x, int y)
{
magic_api *api = (magic_api *) ptr;
int w, h, n, xx, yy, brightness;
int w, h, n, sx, sy, xx, yy, brightness;
Uint8 r, g, b;
Uint32 clear_pixel;
Uint8 clear_brightness;
@ -444,45 +454,49 @@ void do_ascii_effect(void *ptr, int which, SDL_Surface * canvas, SDL_Surface * l
x = (x / w) * w;
y = (y / h) * h;
if (!api->touched(x, y))
for (sy = y - (h * (ascii_size - 1)); sy <= y + (h * (ascii_size - 1)); sy += h)
{
clear_pixel = api->getpixel(ascii_bitmap[which], 0, 0);
SDL_GetRGB(clear_pixel, ascii_bitmap[which]->format, &r, &g, &b);
clear_brightness = ((r + g + b) / 3.0);
dest.x = x;
dest.y = y;
dest.w = w;
dest.h = h;
SDL_FillRect(canvas, &dest, clear_pixel);
brightness = 0;
for (yy = y; yy < y + h; yy++)
for (sx = x - (w * (ascii_size - 1)); sx <= x + (w * (ascii_size - 1)); sx += w)
{
for (xx = x; xx < x + w; xx++)
if (!api->touched(sx, sy))
{
SDL_GetRGB(api->getpixel(ascii_snapshot, xx, yy), ascii_snapshot->format, &r, &g, &b);
brightness += get_bright(api, r, g, b);
clear_pixel = api->getpixel(ascii_bitmap[which], 0, 0);
SDL_GetRGB(clear_pixel, ascii_bitmap[which]->format, &r, &g, &b);
clear_brightness = ((r + g + b) / 3.0);
dest.x = sx;
dest.y = sy;
dest.w = w;
dest.h = h;
SDL_FillRect(canvas, &dest, clear_pixel);
brightness = 0;
for (yy = sy; yy < sy + h; yy++)
{
for (xx = sx; xx < sx + w; xx++)
{
SDL_GetRGB(api->getpixel(ascii_snapshot, xx, yy), ascii_snapshot->format, &r, &g, &b);
brightness += get_bright(api, r, g, b);
}
}
brightness = brightness / (w * h);
if (brightness != clear_brightness)
{
n = get_best_char(which, brightness);
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 = sx + (w - src.w) / 2;
dest.y = sy;
SDL_BlitSurface(ascii_bitmap[which], &src, canvas, &dest);
}
}
}
brightness = brightness / (w * h);
/* FIXME: Increase contrast */
if (brightness != clear_brightness)
{
n = get_best_char(which, brightness);
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);
}
}
}