public AnchoringSet FindAnchoringSet(IList <TUICircle> circles, float axisLenght, float locationThreshold)
{
float minimunLength = axisLenght - locationThreshold;
float maximunLenght = axisLenght + locationThreshold;
double verifyLength = Math.Sqrt(2 * Math.Pow(axisLenght, 2));
foreach (TUICircle circle in circles)
{
//if (this == circle || circle.Grouped)
if (this == circle)
{
continue;
}
double distance = GetDistance(this.Circle.Center, circle.Circle.Center);
if (distance < minimunLength || distance > maximunLenght)
{
continue;
}
//this circle is a the expected distance, so we assume it's the RightAnchor
// so we try to find the bottom anchor
TUICircle rightAnchor = circle;
double angle = GetAngle(this.Circle.Center, rightAnchor.Circle.Center);
PointF centerBottomAnchor = GetPointInCircunference(this.Circle.Center, (int)(angle - 90), axisLenght);
TUICircle bottomAnchor = GetCircleAt(centerBottomAnchor, circles, locationThreshold);
if (bottomAnchor == null)
{
continue;
}
PointF centerVerifyAnchor = GetPointInCircunference(this.Circle.Center, (int)(angle + 45), verifyLength);
TUICircle verifyAnchor = GetCircleAt(centerVerifyAnchor, circles, locationThreshold);
if (verifyAnchor != null)
{
continue;
}
this.IsPivot = true;
this.Grouped = true;
rightAnchor.Grouped = true;
bottomAnchor.Grouped = true;
AnchoringSet set = new AnchoringSet();
set.Angle = angle - 180;
set.Pivot = this;
set.RightAnchor = rightAnchor;
set.BottomAnchor = bottomAnchor;
set.VerifyAnchor = centerVerifyAnchor;
return(set);
}
return(null);
}
private PointF CalculatePointFromLenghts(double lenghtToRightAnchor, double lenghtToBottonAnchor)
{
double alpha = 180 - Angle;
double beta = 90 - alpha;
double rX, bX;
double rY, bY;
rX = lenghtToRightAnchor * Math.Cos(TUICircle.DegreeToRadian(alpha));
rY = lenghtToRightAnchor * Math.Sin(TUICircle.DegreeToRadian(alpha));
bX = lenghtToBottonAnchor * Math.Cos(TUICircle.DegreeToRadian(beta));
bY = lenghtToBottonAnchor * Math.Sin(TUICircle.DegreeToRadian(beta));
double calculatedX = Pivot.Circle.Center.X + rX - bX;
double calculatedY = Pivot.Circle.Center.Y - rY - bY;
return(new PointF((float)calculatedX, (float)calculatedY));
}