public void PathIntersectionsTest0()
{
Scene scene = new Scene();
FloatPortal p0 = new FloatPortal(scene);
p0.SetTransform(new Transform2(new Vector2(1, 0)));
FloatPortal p1 = new FloatPortal(scene);
p1.SetTransform(new Transform2(new Vector2(10, -1)));
p0.Linked = p1;
p1.Linked = p0;
PortalCommon.UpdateWorldTransform(scene);
LineF ray = new LineF(new Vector2(0, 0), new Vector2(8, -1));
PortalPath path = new PortalPath();
path.Enter(p0);
var intersections = Portal.PathIntersections(path, ray);
Assert.AreEqual(1, intersections.Length);
Assert.AreEqual(0.5, intersections[0].TFirst, PATH_INTERSECTION_DELTA);
Assert.AreEqual(1.0 / 3, intersections[0].TLast, PATH_INTERSECTION_DELTA);
}
public void PathIntersectionsTest2()
{
Scene scene = new Scene();
FloatPortal p0 = new FloatPortal(scene);
p0.SetTransform(new Transform2(new Vector2(1, 0)));
FloatPortal p1 = new FloatPortal(scene);
p1.SetTransform(new Transform2(new Vector2(2, 0), 1, (float)Math.PI));
p0.Linked = p1;
p1.Linked = p0;
FloatPortal p2 = new FloatPortal(scene);
p2.SetTransform(new Transform2(new Vector2(3, 0)));
FloatPortal p3 = new FloatPortal(scene);
p3.SetTransform(new Transform2(new Vector2(6, 3), 1, (float)Math.PI/2));
p2.Linked = p3;
p3.Linked = p2;
PortalCommon.UpdateWorldTransform(scene);
LineF ray = new LineF(new Vector2(0, 0), new Vector2(6, 2));
PortalPath path = new PortalPath();
path.Enter(p0);
path.Enter(p2);
var intersections = Portal.PathIntersections(path, ray);
Assert.AreEqual(2, intersections.Length);
Assert.AreEqual(0.5, intersections[0].TFirst, PATH_INTERSECTION_DELTA);
Assert.AreEqual(1.0 / 3, intersections[0].TLast, PATH_INTERSECTION_DELTA);
Assert.AreEqual(0.5, intersections[1].TFirst, PATH_INTERSECTION_DELTA);
Assert.AreEqual(2.0 / 3, intersections[1].TLast, PATH_INTERSECTION_DELTA);
}