public void Velocity_GetNewPositionReturnsNewPointForInclinedMovementAtSomeAngle()
{
Velocity v = new Velocity(1, Math.Atan(3.0 / 4.0));
PointD p1 = new Vsite.Pood.BouncingBall.PointD(0, 0);
PointD p2 = v.GetNewPosition(p1, 5);
Assert.AreEqual(4, p2.X, 1e-5);
Assert.AreEqual(3, p2.Y, 1e-5);
}
public void Velocity_GetNewPositionReturnsNewPointForHorizontalMovementLeft()
{
Velocity v = new Velocity(2, Math.PI);
PointD p1 = new Vsite.Pood.BouncingBall.PointD(10, 2);
PointD p2 = v.GetNewPosition(p1, 4);
Assert.AreEqual(2, p2.X, 1e-5);
Assert.AreEqual(2, p2.Y, 1e-5);
}
public void Velocity_GetNewPositionReturnsNewPointForInclinedMovementAt45Deg()
{
Velocity v = new Velocity(1, Math.PI / 4);
PointD p1 = new Vsite.Pood.BouncingBall.PointD(0, 0);
PointD p2 = v.GetNewPosition(p1, 2);
Assert.AreEqual(Math.Sqrt(2), p2.X, 1e-5);
Assert.AreEqual(Math.Sqrt(2), p2.Y, 1e-5);
}
public void Velocity_GetNewPositionReturnsNewPointForVerticalMovementDown()
{
Velocity v = new Velocity(1, -Math.PI / 2);
PointD p1 = new Vsite.Pood.BouncingBall.PointD(3, 8);
PointD p2 = v.GetNewPosition(p1, 5);
Assert.AreEqual(3, p2.X, 1e-5);
Assert.AreEqual(3, p2.Y, 1e-5);
}