connector.py 文件源码

def shortenpath(self, dists):
        """shortens a path by the given distances"""

        # XXX later, this should be done by extended boxes instead of intersecting with circles
        # cut off the start of self
        center = self.atbegin_pt()
        cutpath = path.circle_pt(center[0], center[1], dists[0])
        try:
            cutpath = cutpath.normpath()
        except normpath.NormpathException:
            pass
        else:
            sp = self.intersect(cutpath)[0]
            self.normsubpaths = self.split(sp[-1:])[1].normsubpaths

        # cut off the end of self
        center = self.atend_pt()
        cutpath = path.circle_pt(center[0], center[1], dists[1])
        try:
            cutpath = cutpath.normpath()
        except normpath.NormpathException:
            pass
        else:
            sp = self.intersect(cutpath)[0]
            if sp:
                self.normsubpaths = self.split(sp[:1])[0].normsubpaths


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## classes
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