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excolmap(3) Allegro manual excolmap(3) NAME excolmap - Creating graphical effects with color mapping tables. Alle- gro game programming library. SYNOPSIS #include <allegro.h> Example excolmap DESCRIPTION This program demonstrates how to create custom graphic effects with the create_color_table function. Allegro drawing routines are affected by any color table you might have set up. In the first part of this exam- ple, a greyscale color table is set. The result is that a simple rect- fill call, instead of drawing a rectangle with color zero, uses the al- ready drawn pixels to determine the pixel to be drawn (read the comment of return_grey_color() for a precise description of the algorithm). In the second part of the test, the color table is changed to be an in- verse table, meaning that any pixel drawn will be shown as its color values had been inverted. SEE ALSO BITMAP(3), COLOR_MAP(3), END_OF_MAIN(3), PALETTE(3), RGB(3), RGB_MAP(3), SCREEN_H(3), SCREEN_W(3), allegro_error(3), alle- gro_init(3), allegro_message(3), blit(3), circlefill(3), clear_key- buf(3), color_map(3), create_bitmap(3), create_color_table(3), cre- ate_rgb_table(3), destroy_bitmap(3), drawing_mode(3), font(3), gener- ate_332_palette(3), install_keyboard(3), keypressed(3), makecol(3), rectfill(3), rest(3), rgb_map(3), screen(3), set_gfx_mode(3), set_palette(3), textout_centre_ex(3), vsync(3) Allegro version 4.4.3 excolmap(3)
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO
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