path.py 文件源码

def phase2t(self, psi):
        """Given phase -pi < psi <= pi,
        returns the t value such that
        exp(1j*psi) = self.u1transform(self.point(t)).
        """
        def _deg(rads, domain_lower_limit):
            # Convert rads to degrees in [0, 360) domain
            degs = degrees(rads % (2*pi))

            # Convert to [domain_lower_limit, domain_lower_limit + 360) domain
            k = domain_lower_limit // 360
            degs += k * 360
            if degs < domain_lower_limit:
                degs += 360
            return degs

        if self.delta > 0:
            degs = _deg(psi, domain_lower_limit=self.theta)
        else:
            degs = _deg(psi, domain_lower_limit=self.theta)
        return (degs - self.theta)/self.delta