Function veloren_voxygen::scene::math::clip_points_by_plane

pub fn clip_points_by_plane<T: Float + MulAdd<T, T, Output = T> + Debug>(
    points: &mut Vec<Vec3<T>>,
    plane: Vec4<T>,
    intersection_points: &mut Vec<Vec3<T>>
) -> bool

Returns true if and only if the final point in the polygon (i.e. the first point added to the new polygon) is outside the clipping plane (this implies that the polygon must be non-degenerate).