private static Vector2 GetEachUnit(EachControlPointAngleMode angleMode, Vector2 selfUnit, Vector2 startingSelfUnit, Vector2 startingEachUnit)
{
switch (angleMode)
{
case EachControlPointAngleMode.None: return(startingEachUnit);
case EachControlPointAngleMode.Asymmetric: return(-selfUnit);
case EachControlPointAngleMode.Fixed:
{
float selfRadians = Math.VectorToRadians(selfUnit);
float startingSelfRadians = Math.VectorToRadians(startingSelfUnit);
float startingEachRadians = Math.VectorToRadians(startingEachUnit);
float radians = selfRadians - startingSelfRadians + startingEachRadians;
return(new Vector2((float)System.Math.Cos(radians), (float)System.Math.Sin(radians)));
}
}
return(Vector2.Zero);
}
/// <summary>
/// It controls the transformation of node contol point.
/// </summary>
/// <param name="mode"> The mode. </param>
/// <param name="lengthMode"> The length mode. </param>
/// <param name="angleMode"> The angle mode. </param>
/// <param name="point"> The point. </param>
/// <param name="startingNoder"> The starting node. </param>
/// <param name="isLeftControlPoint"> <see cref="Node.LeftControlPoint"/> or <see cref="Node.RightControlPoint"/>. </param>
/// <returns> The controlled node. </returns>
public static void Controller(SelfControlPointMode mode, EachControlPointLengthMode lengthMode, EachControlPointAngleMode angleMode, Vector2 point, Node node, bool isLeftControlPoint = true)
{
Vector2 startingPoint = node.StartingPoint;
Vector2 startingSelfControlPoint = isLeftControlPoint ? node.StartingLeftControlPoint : node.StartingRightControlPoint;
Vector2 startingEachControlPoint = isLeftControlPoint ? node.StartingRightControlPoint : node.StartingLeftControlPoint;
Vector2 selfControlPoint = Node.GetSelfControlPoint(mode, point, startingPoint, startingSelfControlPoint);
Vector2 eachControlPoint = Node.GetEachControlPoint(lengthMode, angleMode, startingPoint, selfControlPoint - startingPoint, startingSelfControlPoint - startingPoint, startingEachControlPoint - startingPoint);
node.LeftControlPoint = isLeftControlPoint ? selfControlPoint : eachControlPoint;
node.RightControlPoint = isLeftControlPoint ? eachControlPoint : selfControlPoint;
}
// Each
private static Vector2 GetEachControlPoint(EachControlPointLengthMode lengthMode, EachControlPointAngleMode angleMode, Vector2 startingPoint, Vector2 selfVector, Vector2 startingSelfVector, Vector2 startingEachVector)
{
float selfLength = selfVector.Length();
float startingSelfLength = startingSelfVector.Length();
float startingEachLength = startingEachVector.Length();
float eachLength = Node.GetEachLength(lengthMode, selfLength, startingSelfLength, startingEachLength);
Vector2 eachUnit = Node.GetEachUnit(angleMode, selfVector / selfLength, startingSelfVector / selfLength, startingEachVector / startingEachLength);
Vector2 eachControlPoint = startingPoint + eachLength * eachUnit;
return(eachControlPoint);
}
