public static void artwork_elements_scale(artwork_element ae, int width, int height)
{
throw new Exception();
}
public static artwork artwork_create(artwork_element[] ae, int start_pen, int max_pens)
{
artwork a;
osd_bitmap circle;
int pen;
if ((a = allocate_artwork_mem(Machine.scrbitmap.width, Machine.scrbitmap.height)) == null)
return null;
a.start_pen = start_pen;
a.orig_palette = new byte[256 * 3];
a.transparency = new byte[256];
a.num_pens_used = 0;
a.num_pens_trans = 0;
int aei = 0;
while (aei < ae.Length && ae[aei].box.min_x >= 0)
{
/* look if the color is already in the palette */
pen = 0;
while ((pen < a.num_pens_used) &&
((ae[aei].red != a.orig_palette[3 * pen]) ||
(ae[aei].green != a.orig_palette[3 * pen + 1]) ||
(ae[aei].blue != a.orig_palette[3 * pen + 2]) ||
((ae[aei].alpha < 255) && (ae[aei].alpha != a.transparency[pen]))))
pen++;
if (pen == a.num_pens_used)
{
a.orig_palette[3 * pen] = ae[aei].red;
a.orig_palette[3 * pen + 1] = ae[aei].green;
a.orig_palette[3 * pen + 2] = ae[aei].blue;
a.num_pens_used++;
if (ae[aei].alpha < 255)
{
a.transparency[pen] = ae[aei].alpha;
a.num_pens_trans++;
}
}
if (ae[aei].box.max_y == -1) /* circle */
{
int r = ae[aei].box.max_x;
if ((circle = create_circle(r, pen)) != null)
{
copybitmap(a.orig_artwork, circle, false, false,
ae[aei].box.min_x - r,
ae[aei].box.min_y - r,
null, TRANSPARENCY_PEN, 255);
osd_free_bitmap(circle);
}
}
else
fillbitmap(a.orig_artwork, pen, ae[aei].box);
aei++;
}
/* Make sure we don't have too many colors */
if (a.num_pens_used > max_pens)
{
printf("Too many colors in overlay.\n");
printf("Colors found: %d Max Allowed: %d\n", a.num_pens_used, max_pens);
artwork_free(ref a);
return null;
}
/* If the game uses dynamic colors, we assume that it's safe
to init the palette and remap the colors now */
if ((Machine.drv.video_attributes & VIDEO_MODIFIES_PALETTE) != 0)
backdrop_set_palette(a, a.orig_palette);
return a;
}
