double xMax = Double.MIN_VALUE;
double yMax = Double.MIN_VALUE;
double arcLength = 0;
for (int i = 0; i < s.length; i++) {
xi[i + radius] = nx.interpolate(arcLength);
yi[i + radius] = ny.interpolate(arcLength);
if (xi[i + radius] < xMin)
xMin = xi[i + radius];
if (yi[i + radius] < yMin)
yMin = yi[i + radius];