static inline void draw_polyline (float *points, int num_points)
{
if (!points)
return;
al_draw_polyline (points, num_points,
ALLEGRO_LINE_JOIN_NONE,
ALLEGRO_LINE_CAP_NONE,
al_map_rgba_f (1, 1, 1, 1), 2, 0);
}
/* Function: al_draw_polygon_with_holes
*/
void al_draw_polygon_with_holes(const float *vertices, int vertex_count,
const int *holes, int hole_count, ALLEGRO_LINE_JOIN join_style,
ALLEGRO_COLOR color, float thickness, float miter_limit)
{
# define VERTEX(index) ((const float*)(((uint8_t*)vertices) + (sizeof(float) * 2) * ((vertex_count + (index)) % vertex_count)))
# define HOLE(index) (*((int*)(((uint8_t*)holes) + sizeof(int) * ((hole_count + index) % hole_count))))
int i;
if (hole_count <= 0)
return;
al_draw_polyline(vertices, HOLE(0), join_style, ALLEGRO_LINE_CAP_CLOSED, color, thickness, miter_limit);
for (i = 1; i < hole_count; ++i)
al_draw_polyline_ex(VERTEX(HOLE(i) - 1), -(int)(sizeof(float) * 2), HOLE(i) - HOLE(i - 1), join_style, ALLEGRO_LINE_CAP_CLOSED, color, thickness, miter_limit);
# undef VERTEX
# undef HOLE
}
/* Function: al_draw_polygon
*/
void al_draw_polygon(const float *vertices, int vertex_count,
ALLEGRO_LINE_JOIN join_style, ALLEGRO_COLOR color,
float thickness, float miter_limit)
{
al_draw_polyline(vertices, vertex_count, join_style, ALLEGRO_LINE_CAP_CLOSED, color, thickness, miter_limit);
}