def rescale(self,scale):
        center = self.center()
        cx,cy = center.X(),center.Y()
        w = scale*self.w
        h = scale*self.h
        return Rect(cx-0.5*w,cy-0.5*h,w,h)
Expand or contract the size of the rectangle by a "scale" while
dataset/ETHPy150Open bolme/pyvision/src/pyvision/types/Rect.py/Rect.rescale