+ Vector3d start = new Vector3d(u.startPoint);
+ Vector3d end = new Vector3d(u.endPoint);
+
+ if (checkSizes) {
+ // create offsets for leg ends.
+ MathTools.mad(start, u.dir, u.start.getInlineLength());
+ MathTools.mad(end, u.dir, -u.end.getInlineLength());
+ }
+