Demo of how matrix transforms differ

TransformDemo.cs

void Main()
{
	Matrix4x4 yawPitchRoll = Matrix4x4.CreateFromYawPitchRoll(25, 32, 67);
	Matrix4x4 translateM4 = Matrix4x4.CreateTranslation(new Vector3(3, 6, 0));
	Matrix3x2 translate = Matrix3x2.CreateTranslation(new Vector2(3, 6));

	Vector2 target = Vector2.Zero;

	// All three of the following methods yield the correct transform vector <3,6>
	Vector2.Transform(target, translate).Dump();
	Vector2.Transform(target, translateM4).Dump();
	TransformCorrect(target, translateM4).Dump();

	// The following gives different values.
	Vector2.Transform(target, yawPitchRoll).Dump(); // <0,0> WRONG!
	TransformCorrect(target, yawPitchRoll).Dump(); // <-0.1335264, -0.6668726> CORRECT!
}

// Define other methods and classes here
public static Vector2 TransformCorrect(Vector2 vector, Matrix4x4 matrix)
{
	const float e = .0000001F;
	Vector3 v3 = Vector3.Transform(new Vector3(vector, 1F), matrix);
	return new Vector2(v3.X, v3.Y) / Math.Max(v3.Z, e);
}