public static StylusPointCollection xkcd(StylusPointCollection pts)
{
StylusPointCollection r = resample(pts);
if (r.Count < 2)
{
return(r);
}
StylusPoint prev = r[0];
CorrRandExp r1 = new CorrRandExp(0.15, 0.99);
CorrRandWindow r2 = new CorrRandWindow(0.1, 20);
for (int i = 0; i < r.Count; ++i)
{
StylusPoint cur = r[i], next = i + 1 < r.Count?r[i + 1]:cur;
double dX = next.X - prev.X, dY = next.Y - prev.Y;
double sqrNorm = dX * dX + dY * dY;
if (sqrNorm == 0)
{
continue;
}
double amt = r1.next();// +r2.next();
double factor = amt / Math.Sqrt(sqrNorm);
prev = cur;
cur.X -= factor * dY;
cur.Y += factor * dX;
r[i] = cur;
}
return(r);
}
public static StylusPointCollection xkcd(StylusPointCollection pts)
{
StylusPointCollection r = resample(pts);
if (r.Count < 2) return r;
StylusPoint prev = r[0];
CorrRandExp r1 = new CorrRandExp(0.15, 0.99);
CorrRandWindow r2 = new CorrRandWindow(0.1, 20);
for (int i = 0; i < r.Count; ++i)
{
StylusPoint cur = r[i], next = i+1<r.Count?r[i + 1]:cur;
double dX = next.X - prev.X, dY = next.Y - prev.Y;
double sqrNorm = dX * dX + dY * dY;
if (sqrNorm == 0)
{
continue;
}
double amt = r1.next();// +r2.next();
double factor = amt / Math.Sqrt(sqrNorm);
prev = cur;
cur.X -= factor * dY;
cur.Y += factor * dX;
r[i] = cur;
}
return r;
}