public void TestShapeDefaultMaterial()
{
var s = new TestShape();
var m = s.Material;
Assert.AreEqual(m, new Material());
}
public void TestShapeTransformationChanged()
{
var s = new TestShape();
var t = Matrix.Translation(2, 3, 4);
s.Transform = t;
Assert.AreEqual(s.Transform, t);
}
public void TestShapeBounds()
{
var shape = new TestShape();
var box = shape.BoundsOf;
Assert.AreEqual(box.Min, new Point(-1, -1, -1));
Assert.AreEqual(box.Max, new Point(1, 1, 1));
}
public void TestShapeTranslatedNormal()
{
var s = new TestShape();
s.Transform = Matrix.Translation(0, 1, 0);
var n = s.NormalAt(new Point(0, 1.70711, -0.70711));
Assert.AreEqual(n, new Vector(0, 0.70711, -0.70711));
}
public void TestShapeCustomMaterial()
{
var s = new TestShape();
var m = new Material();
m.Ambient = 1;
s.Material = m;
Assert.AreEqual(s.Material, m);
}
public void TestGroupIntersectHit()
{
var child = new TestShape();
var shape = new Group();
shape.Add(child);
var r = new Ray(new Point(0, 0, -5), new Vector(0, 0, 1));
var xs = shape.Intersect(r);
Assert.IsNotNull(child.SavedRay);
}
public void TestCsgBBIntersectHit()
{
var left = new TestShape();
var right = new TestShape();
var shape = new CSG(CsgOperation.Difference, left, right);
var r = new Ray(new Point(0, 0, -5), new Vector(0, 0, 1));
var xs = shape.Intersect(r);
Assert.IsNotNull(left.SavedRay);
Assert.IsNotNull(right.SavedRay);
}
public void TestShapeScaled()
{
var r = new Ray(new Point(0, 0, -5), Vector.VectorZ);
var s = new TestShape();
s.Transform = Matrix.Scaling(2, 2, 2);
var xs = s.Intersect(r);
Assert.AreEqual(s.SavedRay.Origin, new Point(0, 0, -2.5));
Assert.AreEqual(s.SavedRay.Direction, new Vector(0, 0, 0.5));
}
public void TestShapeTransformedNormal()
{
var s = new TestShape();
var m = Matrix.Scaling(1, 0.5, 1) * Matrix.RotationZ(Math.PI / 5);
s.Transform = m;
var value = MathHelper.SQRT2 / 2.0;
var n = s.NormalAt(new Point(0, value, -value));
Assert.AreEqual(n, new Vector(0, 0.97014, -0.24254));
}
public void TestShapeTranslated()
{
var r = new Ray(new Point(0, 0, -5), Vector.VectorZ);
var s = new TestShape();
s.Transform = Matrix.Translation(5, 0, 0);
var xs = s.Intersect(r);
// Bounding box broke this...
//Assert.AreEqual(s.SavedRay.Origin, new Point(-5, 0, -5));
//Assert.AreEqual(s.SavedRay.Direction, Vector.VectorZ);
Assert.IsNull(s.SavedRay);
}
public void TestShapeDefaultTransformation()
{
var s = new TestShape();
Assert.AreEqual(s.Transform, Matrix.Identity);
}