Example #1
0
    public Polygon2D GenerateShadow(Polygon2D poly, float sunDirection)
    {
        Polygon2D convexHull = new Polygon2D();

        foreach (Vector2D p in poly.pointsList)
        {
            Vector2D vA = p.Copy();
            vA.Push(sunDirection, height);

            convexHull.pointsList.Add(vA);
            convexHull.pointsList.Add(p);
        }

        convexHull.pointsList = Math2D.GetConvexHull(convexHull.pointsList);
        return(convexHull);
    }
Example #2
0
        static public Polygon2 GenerateShadow(Polygon2 poly, float sunDirection, float height)
        {
            Polygon2D convexHull = new Polygon2D();
            Vector2D  vA;

            sunDirection = -sunDirection;

            foreach (Vector2 p in poly.points)
            {
                vA = new Vector2D(p);
                vA.Push(sunDirection, height);

                convexHull.pointsList.Add(vA);
                convexHull.pointsList.Add(new Vector2D(p));
            }

            convexHull.pointsList = Math2D.GetConvexHull(convexHull.pointsList);
            return(new Polygon2(convexHull));
        }