public CubicBezierV2(Vector2 start, Vector2 end, float tangentMultiplier = 0.7f)
{
this.start = start;
this.end = end;
Vector2 offset = end - start;
// ex. A ---> B == Direction.RIGHT
Direction offsetDirection = DirectionUtil.ConvertVector2(offset);
// ex. (Direction.RIGHT).Vector2Value() == Vector2(1.0f, 0.0f)
Vector2 startTangentOffset = Vector2.Scale(offsetDirection.Vector2Value(), Vector2Util.Abs(offset) * tangentMultiplier);
Vector2 endTangentOffset = -startTangentOffset;
this.startTangent = this.start + startTangentOffset;
this.endTangent = this.end + endTangentOffset;
}
public QuadBezierV2(Vector2 start, Vector2 end, Axis?axis = null, float tangentMidpointMultiplier = 0.7f)
{
this.start = start;
this.end = end;
Vector2 offset = this.end - this.start;
// ex. A ---> B == Direction.RIGHT
Direction offsetDirection = DirectionUtil.ConvertVector2(offset);
if (axis != null)
{
// override offsetDirection with axis if passed in
// ex. offset = (1.0f, 2.0f) and axis is Axis.HORIZONTAL then axisOffset is (1.0f, 0.0f)
Vector2 axisOffset = Vector2.Scale(axis.Value.Vector2Value(), offset);
offsetDirection = DirectionUtil.ConvertVector2(axisOffset);
}
// ex. (Direction.RIGHT).Vector2Value() == Vector2(1.0f, 0.0f)
this.control = this.start + Vector2.Scale(offsetDirection.Vector2Value(), Vector2Util.Abs(offset));
Vector2 midpoint = (this.start + this.end) / 2.0f;
this.control = midpoint + (this.control - midpoint) * tangentMidpointMultiplier;
}