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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import unittest
from Box2D import b2Color
class testColor (unittest.TestCase):
def checkAlmostEqual(self, v1, v2, msg, places=3):
for i, (a, b) in enumerate(zip(v1, v2)):
self.assertAlmostEqual(a, b, places=places,
msg="(index %d) %s, a=%f b=%f from %s, %s" % (i, msg, a, b, v1, v2))
def test_color(self):
x, y, z = 1.0, 2.0, 3.0
c1 = b2Color(x, y, z)
c2 = b2Color(z, y, x)
c = c1 + c2
self.checkAlmostEqual(c, (x+z, y+y, z+x), msg='b2Color +')
c = c1 - c2
self.checkAlmostEqual(c, (x-z, y-y, z-x), msg='b2Color -')
c = 2.0 * c1
self.checkAlmostEqual(c, (x+x, y+y, z+z), msg='float * b2Color')
c = c1 * 2.0
self.checkAlmostEqual(c, (x+x, y+y, z+z), msg='b2Color * float')
c = c1 / 2.0
self.checkAlmostEqual(c, (x/2.0, y/2.0, z/2.0), msg='b2Color / float')
c = c1.copy()
c *= 2.0
self.checkAlmostEqual(c, (x+x, y+y, z+z), msg='b2Color *= float')
c = b2Color(c1)
c /= 2.0
self.checkAlmostEqual(c, (x/2.0, y/2.0, z/2.0), msg='b2Color /= float')
c1 += (1.0, 1.0, 1.0)
self.checkAlmostEqual(c1, (x+1, y+1, z+1), msg='b2Color +=')
c1 -= (1.0, 1.0, 1.0)
self.checkAlmostEqual(c1, (x, y, z), msg='b2Color -=')
bytes=b2Color(1, 1, 1).bytes
self.assertEqual(bytes, [255,255,255], msg='bytes (1,1,1)=>%s'%bytes)
bytes=b2Color(0, 0, 0).bytes
self.assertEqual(bytes, [0,0,0], msg='bytes (1,1,1)=>%s'%bytes)
self.assertEqual(c1[0], x)
self.assertEqual(c1[1], y)
self.assertEqual(c1[2], z)
c1.list = (x*2, y*2, z*2)
self.checkAlmostEqual(c1, (x+x, y+y, z+z), msg='b2Color.list')
if __name__ == '__main__':
unittest.main()
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