Function clip_to_plane 

pub fn clip_to_plane<Vertex: Copy, Plane: AttributedClipPlane<Vertex>>(
    source: &[Vertex],
    destination: &mut [Vertex],
    plane: &Plane,
    traversal: ClipTraversal,
) -> Result<usize, ClipOverflow>

Clip one attributed polygon against one half-space into destination, returning how many vertices it wrote.

Every write is bounds-checked. A convex source clipped by a plane whose inside answer is the same each time a vertex is evaluated gains at most one vertex, so source.len() + 1 slots always suffice for it; any input fits 2 * source.len(), the most one vertex and one crossing per source vertex can emit.

Errors

ClipOverflow when destination is too small.