Sutherland-Hodgman polygon clipping: Difference between revisions

{{trans|C}}

This is losely based on the C version. Since Evaldraw doesnt have dynamic memory, all sizes must be declared up front. We limit ourselves to polygons of up to 32 vertices. This is fine, as the input polygon with its 9 vertices, when clipped against the clipper rectangle only produces a 11 vertex polygon. If we run out of vertices at runtime, the errno function is called and displays an error number.

<syntaxhighlight lang="c">

struct vec{ x, y; };