public Spline()
{
AnchorPoints.Add(new Vector2(-1, 0));
ControlPoints.Add(new ControlPointPair(NULL, new Vector2(-0.5f, -0.5f)));
AnchorPoints.Add(new Vector2(1, 0));
ControlPoints.Add(new ControlPointPair(new Vector2(0.5f, 0.5f), NULL));
}
public void AddPoint(Vector2 newPoint)
{
Vector2 lastAnchorPoint = AnchorPoints[AnchorPoints.Count - 1];
ControlPointPair lastControlPoint = ControlPoints[ControlPoints.Count - 1];
Vector2 distance = lastAnchorPoint - lastControlPoint.leftControlPoint;
lastControlPoint.rightControlPoint = lastAnchorPoint + distance;
ControlPoints[ControlPoints.Count - 1] = lastControlPoint;
AnchorPoints.Add(newPoint);
ControlPointPair newLastControlPointPair =
new ControlPointPair(newPoint - distance, NULL);
ControlPoints.Add(newLastControlPointPair);
}