def scale(self, factor):
Validator.validatePositiveDouble(factor,
"Scale Factor not a valid double")
for point in self.points:
dx = point.x - self.center.x
dy = point.y - self.center.y
point.x = dx * factor + self.center.x
point.y = dy * factor + self.center.y
def testValidatePositiveDouble(self):
Validator.validatePositiveDouble(123.456,
"Double unexpectedly invalid")
Validator.validatePositiveDouble(0, "Double unexpectedly invalid")
self.assertRaises(ShapeException, Validator.validatePositiveDouble,
None, "None is not a valid positive double")
self.assertRaises(ShapeException, Validator.validatePositiveDouble,
float('inf'), "Inf is not a valid positive double")
self.assertRaises(ShapeException, Validator.validatePositiveDouble,
float('-inf'), "-Inf is not a valid positive double")
self.assertRaises(ShapeException, Validator.validatePositiveDouble,
"foo",
"String \'foo\' is not a valid positive double")
self.assertRaises(ShapeException, Validator.validatePositiveDouble,
-123.456, "-123.456 is not a valid positive double")
def scale(self, scaleFactor):
Validator.validatePositiveDouble(scaleFactor,
"Scale Factor not a valid double")
f1_dx = self.foci1[0].x - self.__center.x
f1_dy = self.foci1[0].y - self.__center.y
f2_dx = self.foci2[0].x - self.__center.x
f2_dy = self.foci2[0].y - self.__center.y
a1_dx = self.axis1.point2.x - self.__center.x
a1_dy = self.axis1.point2.y - self.__center.y
a2_dx = self.axis2.point2.x - self.__center.x
a2_dy = self.axis2.point2.y - self.__center.y
self.foci1[0].x = f1_dx * scaleFactor + self.__center.x
self.foci1[0].y = f1_dy * scaleFactor + self.__center.y
self.foci1[1].x = f1_dx * scaleFactor + self.__center.x
self.foci1[1].y = f1_dy * scaleFactor + self.__center.y
self.foci2[0].x = f2_dx * scaleFactor + self.__center.x
self.foci2[0].y = f2_dy * scaleFactor + self.__center.y
self.foci2[1].x = f2_dx * scaleFactor + self.__center.x
self.foci2[1].y = f2_dy * scaleFactor + self.__center.y
self.axis1.point2.x = a1_dx * scaleFactor + self.__center.x
self.axis1.point2.y = a1_dy * scaleFactor + self.__center.y
self.axis2.point2.x = a2_dx * scaleFactor + self.__center.x
self.axis2.point2.y = a2_dy * scaleFactor + self.__center.y