using TriangleNet.Geometry;
using TriangleNet.Tools;
using TriangleNet.Topology.DCEL;

namespace TriangleNet.Voronoi
{
	public class StandardVoronoi : VoronoiBase
	{
		public StandardVoronoi(Mesh mesh)
			: this(mesh, mesh.bounds, new DefaultVoronoiFactory(), RobustPredicates.Default)
		{
		}

		public StandardVoronoi(Mesh mesh, Rectangle box)
			: this(mesh, box, new DefaultVoronoiFactory(), RobustPredicates.Default)
		{
		}

		public StandardVoronoi(Mesh mesh, Rectangle box, IVoronoiFactory factory, IPredicates predicates)
			: base(mesh, factory, predicates, generate: true)
		{
			box.Expand(mesh.bounds);
			PostProcess(box);
		}

		private void PostProcess(Rectangle box)
		{
			foreach (HalfEdge ray in rays)
			{
				Point origin = ray.origin;
				Point c = ray.twin.origin;
				if (box.Contains(origin) || box.Contains(c))
				{
					IntersectionHelper.BoxRayIntersection(box, origin, c, ref c);
				}
			}
		}
	}
}