public void BoundingBox()
{
var s = new Plane();
var b = s.BoundingBox;
Assert.AreEqual(b.Min, Point(float.NegativeInfinity, 0, float.NegativeInfinity));
Assert.AreEqual(b.Max, Point(float.PositiveInfinity, 0, float.PositiveInfinity));
}
public void IntersectCoplanarRay()
{
var p = new Plane();
var r = new Ray(0f, 0f, 0f, 0f, 0f, 1f);
var xs = p.IntersectLocal(ref r);
Assert.AreEqual(xs.Count, 0);
}
public void IntersectPlaneFromBelow()
{
var p = new Plane();
var r = new Ray(0f, -1f, 0f, 0f, 1f, 0f);
var xs = p.IntersectLocal(ref r);
Assert.AreEqual(xs.Count, 1);
Assert.AreEqual(xs[0].Distance, 1f);
Assert.AreEqual(xs[0].Object, p);
}
public void PlaneNormalIsUpVector()
{
var p = new Plane();
var n1 = p.LocalNormal(Point(0f, 0f, 0f));
var n2 = p.LocalNormal(Point(202f, 110f, 0f));
var n3 = p.LocalNormal(Point(-202f, 1e10f, 99f));
Assert.That.VectorsAreEqual(n1, Vector4.UnitY);
Assert.That.VectorsAreEqual(n3, Vector4.UnitY);
Assert.That.VectorsAreEqual(n2, Vector4.UnitY);
}
