def splitBranch(self,branch, point):
self.points.append(point)
radius = branch.radius
new = Branch(len(self.points)-1, branch.finalPoint, radius)
new.root = branch
new.son1 = branch.son1
new.son2 = branch.son2
if branch.son1 is not None:
new.son1.root = new
if branch.son2 is not None:
new.son2.root = new
branch.son2 = None
branch.finalPoint = new.initialPoint
branch.son1 = new
