public void NormalizeTest()
{
var vector = new KtVector2D(Degrees.Create(45)) * 20;
vector.Normalize();
Assert.AreEqual(vector, new KtVector2D(Math.Sqrt(2) / 2, Math.Sqrt(2) / 2));
}
public void AngleBetweenTest()
{
var vector = new KtVector2D(3, 2);
var vector2 = new KtVector2D(2, 3);
Assert.AreEqual(vector.AngleBetween(vector2), Degrees.Create(-(Math.Atan2(2, 3) - Math.Atan2(3, 2)) * 180 / Math.PI));
Assert.AreEqual(vector2.AngleBetween(vector), Degrees.Create((Math.Atan2(2, 3) - Math.Atan2(3, 2)) * 180 / Math.PI));
}
public void RotateTest()
{
var vector = new KtVector2D(1, 0);
vector.Rotate(Degrees.Create(45));
Assert.AreEqual(vector, new KtVector2D(Math.Sqrt(2) / 2, Math.Sqrt(2) / 2));
var vector2 = new KtVector2D(-1, 1);
vector2.Rotate(Degrees.Create(-135));
Assert.AreEqual(vector2, new KtVector2D(Math.Sqrt(2), 0));
}
private static Angle InteriorAngle(this CircularStack <KtPoint2D> points, KtPoint2D point) => points.Aggregate(Degrees.Create(0.0), (total, c) => total + c.InteriorAngle(point));
public void DirectionTest()
{
var vector = new KtVector2D(3, 2);
Assert.AreEqual(vector.Direction, Degrees.Create(Math.Atan2(2, 3) * 180 / Math.PI));
}
public void KtVector2DTest1()
{
var vector = new KtVector2D(Degrees.Create(45));
Assert.AreEqual(vector, new KtVector2D(Math.Sqrt(2) / 2, Math.Sqrt(2) / 2));
}
public static Angle TotalInternalAngle(this CircularStack <KtPoint2D> points, KtPoint2D point) => points.Aggregate(Degrees.Create(0), (total, c) => total + (c?.Next?.Value - point).ToKtVector2D().AngleBetween((c?.Value - point).ToKtVector2D()));
public override Angle Complementary() => Degrees.Create(Value + 0.5);
public override Angle Complementary() => Degrees.Create(Value + Math.PI);