// ----------------------
protected Vector3 ClampInsideCanvas(Vector3 targetWorldPos, Canvas limiterCanvas)
{
RectTransform canvasTr = null;
if ((limiterCanvas == null) || ((canvasTr = (limiterCanvas.transform as RectTransform)) == null))
{
return(targetWorldPos);
}
Rect localRect = this.GetLocalRect();
Rect limiterRect = canvasTr.rect;
Matrix4x4 localToLimiterSpace = limiterCanvas.transform.worldToLocalMatrix * CFUtils.ChangeMatrixTranl(this.transform.localToWorldMatrix, targetWorldPos);
bool thisIsRound = ((this.shape == Shape.Circle) || (this.shape == Shape.Ellipse));
Rect rectInLimiterSpace = CFUtils.TransformRect(localRect, localToLimiterSpace, thisIsRound);
Vector2 localOfs = CFUtils.ClampRectInside(rectInLimiterSpace, thisIsRound, limiterRect, false);
if (localOfs == Vector2.zero)
{
return(targetWorldPos);
}
return(targetWorldPos + limiterCanvas.transform.localToWorldMatrix.MultiplyVector(localOfs));
}
// -------------------
protected Vector3 ClampInsideOther(Vector3 targetWorldPos, TouchControl limiter)
{
Rect localRect = this.GetLocalRect();
Rect limiterRect = limiter.GetLocalRect();
Matrix4x4 localToLimiterSpace = limiter.transform.worldToLocalMatrix * CFUtils.ChangeMatrixTranl(this.transform.localToWorldMatrix, targetWorldPos);
bool thisIsRound = ((this.shape == Shape.Circle) || (this.shape == Shape.Ellipse));
bool limiterIsRound = ((limiter.shape == Shape.Circle) || (limiter.shape == Shape.Ellipse));
Rect rectInLimiterSpace = CFUtils.TransformRect(localRect, localToLimiterSpace, thisIsRound);
Vector2 localOfs = CFUtils.ClampRectInside(rectInLimiterSpace, thisIsRound, limiterRect, limiterIsRound);
if (localOfs == Vector2.zero)
{
return(targetWorldPos);
}
return(targetWorldPos + limiter.transform.localToWorldMatrix.MultiplyVector(localOfs));
}