public void TransformationInverse()
{
const float half = 0.5f;
var Transformation = new Projection2D().SetQuadliteral(new Vector2(346, 517), new Vector2(1180, 515), new Vector2(1280, 720), new Vector2(0, 720));
var Transformed = Transformation.Transform(new Vector2(half, half));
var Inverse = Transformation.TransformInverse(Transformed);
Assert.IsTrue(Math.Abs(Inverse.X - half) < 0.001f);
Assert.IsTrue(Math.Abs(Inverse.Y - half) < 0.001f);
}
public void UnitTransformation()
{
var A = new Vector2(0, 0);
var B = new Vector2(1, 0);
var C = new Vector2(1, 1);
var D = new Vector2(0, 1);
var Transformation = new Projection2D().SetQuadliteral(A, B, C, D);
foreach (var Vector in new Vector2[] { Vector2.Zero, Vector2.UnitY, Vector2.UnitX, new Vector2(1, 1) })
{
var Transformed = Transformation.Transform(Vector);
Assert.AreEqual(Vector, Transformed);
}
}
public void Transformation()
{
Vector2 Transformed, Inverse;
var A = new Vector2(0, 0);
var B = new Vector2(3, 0);
var C = new Vector2(3, 1);
var D = new Vector2(1, 1);
Vector2[] Expected = new Vector2[4] {
A, D, B, C
};
var Transformation = new Projection2D().SetQuadliteral(A, B, C, D);
var i = 0;
foreach (var Vector in new Vector2[] { Vector2.Zero, Vector2.UnitY, Vector2.UnitX, new Vector2(1, 1) })
{
Transformed = Transformation.Transform(Vector);
Assert.AreEqual(Expected[i++], Transformed);
Inverse = Transformation.TransformInverse(Transformed);
Assert.AreEqual(Vector, Inverse);
}
}
