mask_color_8(3alleg4) [opendarwin man page]

MASK_COLOR_8(3alleg4)						  Allegro manual					     MASK_COLOR_8(3alleg4)

NAME

       MASK_COLOR_8,  MASK_COLOR_15,  MASK_COLOR_16,  MASK_COLOR_24, MASK_COLOR_32 - Constant representing the mask value in sprites. Allegro game
       programming library.

SYNOPSIS

       #include <allegro.h>

       #define MASK_COLOR_8 0

       #define MASK_COLOR_15 (5.5.5 pink)

       #define MASK_COLOR_16 (5.6.5 pink)

       #define MASK_COLOR_24 (8.8.8 pink)

       #define MASK_COLOR_32 (8.8.8 pink)

DESCRIPTION

       Constants representing the colors used to mask transparent sprite pixels for each color depth. In 256-color resolutions this is	zero,  and
       in truecolor modes it is bright pink (maximum red and blue, zero green).

SEE ALSO

       bitmap_mask_color(3alleg4), makecol(3alleg4), draw_sprite(3alleg4), masked_blit(3alleg4)

Allegro 							   version 4.4.2					     MASK_COLOR_8(3alleg4)

bitmap_mask_color(3alleg4)					  Allegro manual					bitmap_mask_color(3alleg4)

NAME

       bitmap_mask_color - Returns the mask color of the specified bitmap. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       int bitmap_mask_color(BITMAP *bmp);

DESCRIPTION

       Returns	the mask color for the specified bitmap (the value which is skipped when drawing sprites). For 256-color bitmaps this is zero, and
       for truecolor bitmaps it is bright pink (maximum red and blue, zero green). A frequent use of this function is to clear a bitmap  with  the
       mask color so you can later use this bitmap with masked_blit() or draw_sprite() after drawing other stuff on it. Example:

	  /* Replace mask color with another color. */
	  for (y = 0; y h; y++)
	     for (x = 0; x w; x++)
		if (getpixel(bmp, x, y) == bitmap_mask_color(bmp))
		   putpixel(bmp, x, y, another_color);

SEE ALSO

       MASK_COLOR_8(3alleg4), set_color_depth(3alleg4), bitmap_color_depth(3alleg4), ex3d(3alleg4), exmouse(3alleg4), expat(3alleg4)

Allegro 							   version 4.4.2					bitmap_mask_color(3alleg4)