public void RayMissesCSGObject()
{
var c = new shape.CSG(shape.Operation.Union, new shape.Sphere(), new shape.Cube());
var r = new Ray(pt.Point(0, 2, -5), pt.Vector(0, 0, 1));
var xs = c.Intersect(r);
Assert.Empty(xs);
}
public void RayHitsCSGObject()
{
var s1 = new shape.Sphere();
var s2 = new shape.Sphere(transform.Translation(0, 0, 0.5));
var c = new shape.CSG(shape.Operation.Union, s1, s2);
var r = new Ray(pt.Point(0, 0, -5), pt.Vector(0, 0, 1));
var xs = c.Intersect(r);
Assert.Equal(2, xs.Count());
Assert.Equal(4, xs[0].T);
Assert.Equal(s1, xs[0].Object);
Assert.Equal(6.5, xs[1].T);
Assert.Equal(s2, xs[1].Object);
}
