public void TestRectangleTransformedMaximum()
{
var rect = new Rectangle(0, 0, 100, 10);
var mat = Matrix.Rotation(90);
var transformedRect = rect.TransformedMaximum(mat);
double eps = 0.00000001;
Assert.True(Math.Abs(transformedRect.Left - -10) < eps);
Assert.True(Math.Abs(transformedRect.Top - 0) < eps);
Assert.True(Math.Abs(transformedRect.Right - 0) < eps);
Assert.True(Math.Abs(transformedRect.Bottom - 100) < eps);
}
public void TestMatrixInverted2()
{
var a = new Rectangle(0, 0, 1024, 768);
var mat = Matrix.Translation(100, 0);
var b = a.TransformedMaximum(mat);
Assert.True(b.Left == 100);
Assert.True(b.Top == 0);
Assert.True(b.Right == 1024 + 100);
Assert.True(b.Bottom == 768);
mat = mat.Inverted();
var c = b.TransformedMaximum(mat);
Assert.True(c == a);
}