al_draw_filled_polygon_with_holes - Online Linux Manual PageSection : 3
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Source : Allegro reference manual
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NAMEal_draw_filled_polygon_with_holes − Allegro 5 API

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SYNOPSIS #include <allegro5/allegro_primitives.h> void al_draw_filled_polygon_with_holes(const float *vertices,    const int *vertex_counts, ALLEGRO_COLOR color)

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DESCRIPTIONDraws a filled simple polygon with zero or more other simple polygons subtracted from it − the holes. The holes cannot touch or intersect with the outline of the filled polygon. • vertices − Interleaved array of (x, y) vertex coordinates for each of the polygons, including holes. • vertex_counts − Number of vertices for each polygon. The number of vertices in the filled polygon is given by vertex_counts[0] and must be at least three. Subsequent elements indicate the number of vertices in each hole. The array must be terminated with an element with value zero. • color − Color of the filled polygon All hole vertices must use the opposite order (clockwise with y down) of the polygon vertices. All hole vertices must be inside the main polygon and no hole may overlap the main polygon. For example: float vertices[] = {       0,   0, // filled polygon, upper left corner       0, 100, // filled polygon, lower left corner     100, 100, // filled polygon, lower right corner     100,   0, // filled polygon, upper right corner      10,  10, // hole, upper left      90,  10, // hole, upper right      90,  90  // hole, lower right }; int vertex_counts[] = {    4, // number of vertices for filled polygon    3, // number of vertices for hole    0  // terminator }; There are 7 vertices: four for an outer square from (0, 0) to (100, 100) in anti−clockwise order, and three more for an inner triangle in clockwise order. The outer main polygon uses vertices 0 to 3 (inclusive) and the hole uses vertices 4 to 6 (inclusive).

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SINCE5.1.0

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SEE ALSOal_draw_filled_polygon(3), al_draw_filled_polygon_with_holes(3), al_triangulate_polygon(3) 0

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