NAME

       draw_gouraud_sprite  -  Draws  a  sprite  with  gouraud  shading. Allegro game programming
       library.

SYNOPSIS

       #include <allegro.h>

       void draw_gouraud_sprite(BITMAP *bmp, BITMAP *sprite, int x, int y, int c1,  int  c2,  int
       c3, int c4);

DESCRIPTION

       More  sophisticated  version  of  draw_lit_sprite(): the `color' parameter is not constant
       across the sprite image anymore but interpolated between the four specified corner colors.
       The  corner  values  passed to this function indicate the strength of the color applied on
       them, ranging from 0 (no strength) to 255 (full strength). Example:

          /* Some one time initialisation code. */
          COLOR_MAP global_light_table;
          create_light_table(&global_trans_table, my_palette,
                             0, 0, 0, NULL);
          ...
          if (get_color_depth() == 8)
             color_map = &global_light_table;
          else
             set_trans_blender(0, 0, 0, 128);

          /* Enemies are in shadow unless lit by torch. */
          draw_gouraud_sprite(buffer, menacing_spy, x, y,
                              light_strength_on_corner_1,
                              light_strength_on_corner_2,
                              light_strength_on_corner_3,
                              light_strength_on_corner_4);

SEE ALSO

       draw_sprite(3alleg4),            draw_lit_sprite(3alleg4),             color_map(3alleg4),
       set_trans_blender(3alleg4), bitmap_mask_color(3alleg4), exshade(3alleg4)