public void TestEquality(float x, float y, float w, float h, Anchor2d anchor)
{
var rect1 = new Rect2d(x, y, w, h, anchor);
var rect2 = new Rect2d(x, y, w, h, anchor);
Assert.True(rect1 == rect2);
Assert.True(rect1.Equals(rect2));
rect1.X += Constants.FloatTolerance / 10;
Assert.True(rect1 == rect2);
Assert.True(rect1.Equals(rect2));
rect1.X += Constants.FloatTolerance * 10;
Assert.False(rect1 == rect2);
Assert.False(rect1.Equals(rect2));
}