end.add(norm);
rightLine.move(bodyA.getPosition());
leftLine.move(bodyA.getPosition());
Line normLine = new Line(start,end);
Vector2f rightPoint = normLine.intersect(rightLine);
Vector2f leftPoint = normLine.intersect(leftLine);
float dis1 = Float.MAX_VALUE;
if (rightPoint != null) {
dis1 = rightPoint.distance(start) - norm.length();