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exshade(3)                      Allegro manual                      exshade(3)

NAME
       exshade - Gouraud shaded sprites. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       Example exshade

DESCRIPTION
       This program demonstrates how to draw Gouraud shaded (lit) sprites.  In
       an apparently black screen, a planet like sprite is drawn close to the
       middle of the screen. In a similar way to how the first test of extrans
       works, you move the cursor on the screen with the mouse. Attached to
       this mouse you can imagine a virtual spotlight illuminating the scene
       around. Depending on where the mouse is, the Gouraud shaded sprite will
       show the direction of the light.

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),
       allegro_init(3), allegro_message(3), blit(3), clear_bitmap(3),
       color_map(3), create_bitmap(3), create_light_table(3),
       create_rgb_table(3), destroy_bitmap(3), draw_gouraud_sprite(3),
       font(3), install_keyboard(3), install_mouse(3), keypressed(3), line(3),
       load_bitmap(3), mouse_x(3), mouse_y(3), palette_color(3),
       poll_mouse(3), replace_filename(3), rgb_map(3), screen(3),
       set_gfx_mode(3), set_palette(3), set_trans_blender(3), show_mouse(3),
       textout_ex(3)

Allegro                          version 4.4.2                      exshade(3)