def test_basic_centrial_rotate_90_left_hemi(self):
     before = self.create_simple_line_seg((0, 0), (-1, 0))
     after = self.create_simple_line_seg((0, 0), (0, -1))
     self.assertTrue(
         get_rotated_line_segment(before, 90).almost_equals(after))
     self.assertTrue(
         get_rotated_line_segment(after, -90).almost_equals(before))
 def test_basic_central_rotate_45(self):
     before = self.create_simple_line_seg((0, 0), (1, 1))
     after = self.create_simple_line_seg((0, 0), (math.sqrt(2), 0))
     self.assertTrue(
         get_rotated_line_segment(before, -45).almost_equals(after))
     self.assertTrue(
         get_rotated_line_segment(after, 45).almost_equals(before))
 def test_rotate_by_30(self):
     before = self.create_simple_line_seg((1, math.sqrt(3.0)),
                                          (math.sqrt(3.0), 1))
     after = self.create_simple_line_seg((math.sqrt(3.0), 1), (2, 0))
     self.assertTrue(
         get_rotated_line_segment(before, -30).almost_equals(after))
     self.assertTrue(
         get_rotated_line_segment(after, 30).almost_equals(before))
 def test_get_rotated_line_segment_right_hemisphere(self):
     before = self.create_simple_line_seg((0, 1), (1, 2))
     after = self.create_simple_line_seg((1 / math.sqrt(2.0), 1 / math.sqrt(2.0)), \
                                         (math.sqrt(2.0) + 1 / math.sqrt(2.0), 1 / math.sqrt(2.0)))
     self.assertTrue(
         get_rotated_line_segment(before, -45).almost_equals(after))
     self.assertTrue(
         get_rotated_line_segment(after, 45).almost_equals(before))
 def test_rotate_by_zero(self):
     test_ob = self.create_simple_line_seg((0, 1), (1, 2))
     self.assertEquals(get_rotated_line_segment(test_ob, 0.0), test_ob)
 def test_rotate_by_30(self):
     before = self.create_simple_line_seg((1, math.sqrt(3.0)), (math.sqrt(3.0), 1))
     after = self.create_simple_line_seg((math.sqrt(3.0), 1), (2, 0))
     self.assertTrue(get_rotated_line_segment(before, -30).almost_equals(after))
     self.assertTrue(get_rotated_line_segment(after, 30).almost_equals(before))
 def test_rotate_by_zero(self):
     test_ob = self.create_simple_line_seg((0, 1), (1, 2))
     self.assertEquals(get_rotated_line_segment(test_ob, 0.0), test_ob)
 def test_basic_centrial_rotate_90_left_hemi(self):
     before = self.create_simple_line_seg((0, 0), (-1, 0))
     after = self.create_simple_line_seg((0, 0), (0, -1))
     self.assertTrue(get_rotated_line_segment(before, 90).almost_equals(after))
     self.assertTrue(get_rotated_line_segment(after, -90).almost_equals(before))
 def test_basic_central_rotate_45(self):
     before = self.create_simple_line_seg((0, 0), (1, 1))
     after = self.create_simple_line_seg((0, 0), (math.sqrt(2), 0))
     self.assertTrue(get_rotated_line_segment(before, -45).almost_equals(after))
     self.assertTrue(get_rotated_line_segment(after, 45).almost_equals(before))
 def test_get_rotated_line_segment_right_hemisphere(self):
     before = self.create_simple_line_seg((0, 1), (1, 2))
     after = self.create_simple_line_seg((1 / math.sqrt(2.0), 1 / math.sqrt(2.0)), \
                                         (math.sqrt(2.0) + 1 / math.sqrt(2.0), 1 / math.sqrt(2.0)))
     self.assertTrue(get_rotated_line_segment(before, -45).almost_equals(after))
     self.assertTrue(get_rotated_line_segment(after, 45).almost_equals(before))