public void TestAngle()
{
Vec2 a = new Vec2(1, 0);
Vec2 b = new Vec2(0, 1);
Vec2 c = new Vec2(-1, 0);
Assert.AreEqual(0, Vec2.Angle(a, a));
Assert.AreEqual(Math.PI, Vec2.Angle(a, c)); //180deg
Assert.AreEqual(Math.PI / 2, Vec2.Angle(a, b)); // 90 deg
}
static bool TestAngles()
{
/// :CodeSample: Vec2.Angle
Vec2 point = new Vec2(1, 0);
float angle0 = point.Angle();
point = new Vec2(0, 1);
float angle90 = point.Angle();
point = new Vec2(-1, 0);
float angle180 = point.Angle();
point = new Vec2(0, -1);
float angle270 = point.Angle();
/// :End:
point = new Vec2(2.75f, 2.75f);
float angle45 = point.Angle();
Log.Info($"Angles 0 == {angle0}, Angles 45 == {angle45}, 90 == {angle90}, 180 == {angle180}, 270 == {angle270}");
return(angle0 == 0 && angle90 == 90 && angle180 == 180 && angle270 == 270);
}