public void AssigningTransformation()
{
var t = tf.Translation(2, 3, 4);
var s = new shapes.TestShape(t);
Assert.Equal(t, s.Transform);
}
public void DefaultTransformation()
{
var s = new shapes.TestShape();
var identity = RTF.Matrix.GetIdentity();
Assert.Equal(identity, s.Transform);
}
public void TestShapeBoundingBox()
{
var s = new shape.TestShape();
var box = s.Bounds();
Assert.Equal(pt.Point(-1, -1, -1), box.Minimum);
Assert.Equal(pt.Point(1, 1, 1), box.Maximum);
}
public void ComputingNormalOnTransformedShape()
{
var s = new shapes.TestShape(tf.Scaling(1, 0.5, 1) * tf.RotationZ(Math.PI / 5));
var n = s.NormalAt(pt.Point(0, Math.Sqrt(2) / 2, -Math.Sqrt(2) / 2));
var exp = pt.Vector(0, 0.97014, -0.24254);
CustomAssert.Equal(exp, n, 5);
}
public void ComputingNormalOnTranslatedShape()
{
var s = new shapes.TestShape(tf.Translation(0, 1, 0));
var n = s.NormalAt(pt.Point(0, 1.70711, -0.70711));
var exp = pt.Vector(0, 0.70711, -0.70711);
CustomAssert.Equal(exp, n, 5);
}
public void IntersectingTranslatedShapeWithRay()
{
var r = new RTF.Ray(pt.Point(0, 0, -5), pt.Vector(0, 0, 1));
var s = new shapes.TestShape(tf.Translation(5, 0, 0));
_ = s.Intersect(r);
Assert.Equal(pt.Point(-5, 0, -5), s.SavedRay.Origin);
Assert.Equal(pt.Vector(0, 0, 1), s.SavedRay.Direction);
}
public void IntersectingScaledShapeWithRay()
{
var r = new RTF.Ray(pt.Point(0, 0, -5), pt.Vector(0, 0, 1));
var s = new shapes.TestShape(tf.Scaling(2, 2, 2));
_ = s.Intersect(r);
Assert.Equal(pt.Point(0, 0, -2.5), s.SavedRay.Origin);
Assert.Equal(pt.Vector(0, 0, 0.5), s.SavedRay.Direction);
}
public void AssigningMaterial()
{
var m = new RTF.Material
{
Ambient = 1
};
var s = new shapes.TestShape(m);
Assert.Equal(m, s.Material);
}
public void IntersectingRayGrouTestChildrenIfBoxHit()
{
var child = new shape.TestShape();
var shape = new shape.Group();
shape.Add(child);
var r = new Ray(pt.Point(0, 0, -5), pt.Vector(0, 0, 1));
_ = shape.Intersect(r);
Assert.NotNull(child.SavedRay);
}
public void AddingChildToGroup()
{
var g = new shape.Group();
var s = new shape.TestShape();
g.Add(s);
Assert.NotEmpty(g.Children);
Assert.Contains(s, g.Children);
Assert.Equal(g, s.Parent);
}
public void DefaultMaterial()
{
var s = new shapes.TestShape();
Assert.Equal(new RTF.Material(), s.Material);
}