23 lines
567 B
C
23 lines
567 B
C
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//
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// A general clipper.
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//
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#ifndef _CLIP_
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#define _CLIP_
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//
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// Clips a polygon against an edge. On exit *polygon is an array of points and
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// *polygon_num_points gives the length of the array.
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//
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void CLIP_do(
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void ***polygon, // Points to an array of (point *)s of length (*polygon_num_points)
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SLONG *polygon_num_points,
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SLONG sizeof_polygon_point,
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void (*interpolate)(void *new_point, void *point1, void *point2, float amount_along_from_1_to_2),
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float signed_distance_from_edge(void *point)); // +'ve => On the good side of the edge.
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#endif
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