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import unittest
from beziers.point import Point
from beziers.cubicbezier import CubicBezier
from beziers.affinetransformation import AffineTransformation
import math
class AffineTransformationMethods(unittest.TestCase):
def test_translate(self):
p = Point(30,70)
p.rotate(Point(0,0), math.pi/4)
self.assertEqual(p.x, -28.284271247461906)
self.assertEqual(p.y, 70.71067811865476)
p = Point(30,70)
m = AffineTransformation.rotation(math.pi/4)
p.transform(m)
self.assertAlmostEqual(p.x, -28.284271247461906)
self.assertAlmostEqual(p.y, 70.71067811865476)
p = Point(0,10)
m = AffineTransformation.translation(Point(5,-2))
p.transform(m)
self.assertEqual(p.x, 5)
self.assertEqual(p.y, 8)
def test_scale(self):
p = Point(4,5)
m = AffineTransformation.scaling(2)
p.transform(m)
self.assertEqual(p.x, 8)
self.assertEqual(p.y, 10)
p = Point(4,5)
m = AffineTransformation.scaling(1.5, -2)
p.transform(m)
self.assertEqual(p.x, 6)
self.assertEqual(p.y, -10)
def test_multiple_application(self):
p = Point(10,10)
m = AffineTransformation()
m.translate(Point(6,5))
m.scale(1.5,2)
p.transform(m)
self.assertEqual(p.x, 24)
self.assertEqual(p.y, 30)
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