def getYAngle(self):
line = GLine()
line.a, line.b, line.c = 1, 0, 0
return self.angle(line)
def getParaLine(self, pt):
line = GLine()
line.a, line.b, line.c = self.a, self.b, -self.a * pt.fx - self.b * pt.fy
line.d = math.sqrt(line.a ** 2 + line.b ** 2)
return line
def getXAngle(self):
line = GLine()
line.a, line.b, line.c = 0, 1, 0
return self.angle(line)