private void CalcWidth(PathPoint p)
{
if (ControlPoints.Count < 3)
{
p.Width = p.ControlPoint.Width;
}
else
{
var myCP = p.ControlPoint;
var next = p;
while (next.ControlPoint == myCP)
{
next = next.Next;
}
var prev = p;
while (prev.ControlPoint == myCP)
{
prev = prev.Prev;
}
var first = prev.Next;
var firstDist = first.DistanceFromStart;
if (firstDist > p.DistanceFromStart)
{
firstDist -= Length;
}
var nextDist = next.DistanceFromStart;
if (nextDist < p.DistanceFromStart)
{
nextDist += Length;
}
var k = (p.DistanceFromStart - firstDist) / (nextDist - firstDist);
p.Width = p.ControlPoint.Width * (1 - k) + next.ControlPoint.Width * k;
}
p.r2 = (p.Width / 2) * (p.Width / 2);
}
public float DistanceBetweenPoints(PathPoint p1, PathPoint p2)
{
var d = Math.Abs(p2.DistanceFromStart - p1.DistanceFromStart);
return(Math.Min(d, Math.Abs(d - Length)));
}