public async Task When_Rotate_And_TransformBounds()
{
await Dispatch(() =>
{
var SUT = new MatrixTransform()
{
Matrix = MatrixHelper.FromMatrix3x2(Matrix3x2.CreateRotation((float)Math.PI / 2))
};
Assert.AreEqual(
new Rect(-7, 1, 6, 5),
SUT.TransformBounds(new Rect(1, 1, 5, 6))
);
});
}
public async Task When_RotateQuarter_And_TransformPoint()
{
await Dispatch(() =>
{
var SUT = new MatrixTransform()
{
Matrix = MatrixHelper.FromMatrix3x2(Matrix3x2.CreateRotation((float)Math.PI / 4))
};
var expected = new Point(0, 1.41421353816986);
var res = SUT.TransformPoint(new Point(1, 1));
Assert.AreEqual(expected.X, res.X, 1e-10, $"{expected} != {res}");
Assert.AreEqual(expected.Y, res.Y, 1e-10, $"{expected} != {res}");
});
}
public Task When_RotateQuarter_And_TransformBounds() =>
RunOnUIThread.ExecuteAsync(() =>
{
var SUT = new MatrixTransform()
{
Matrix = MatrixHelper.FromMatrix3x2(Matrix3x2.CreateRotation((float)Math.PI / 4))
};
var expected = new Rect(-4.242640495300293, 1.4142135381698608, 7.77817440032959, 7.7781739234924316);
var actual = SUT.TransformBounds(new Rect(1, 1, 5, 6));
Assert.AreEqual(expected.X, actual.X, 1e-5, $"X: {expected} != {actual}");
Assert.AreEqual(expected.Y, actual.Y, 1e-5, $"Y: {expected} != {actual}");
Assert.AreEqual(expected.Width, actual.Width, 1e-5, $"W: {expected} != {actual}");
Assert.AreEqual(expected.Height, actual.Height, 1e-5, $"H: {expected} != {actual}");
});
public async Task When_RotateQuarter_And_TransformBounds()
{
await Dispatch(() =>
{
var SUT = new MatrixTransform()
{
Matrix = MatrixHelper.FromMatrix3x2(Matrix3x2.CreateRotation((float)Math.PI / 4))
};
var expected = new Rect(-4.24264097213745, 1.41421353816986, 7.77817463874817, 7.77817499637604);
var actual = SUT.TransformBounds(new Rect(1, 1, 5, 6));
Assert.AreEqual(expected.Y, actual.Y, 1e-10, $"{expected} != {actual}");
Assert.AreEqual(expected.X, actual.X, 1e-10, $"{expected} != {actual}");
Assert.AreEqual(expected.Width, actual.Width, 1e-10, $"{expected} != {actual}");
Assert.AreEqual(expected.Height, actual.Height, 1e-10, $"{expected} != {actual}");
});
}
