def test_offset1(self):
r = Ray(Point(0, 0, -5), Vector(0, 0, 1))
shape = Sphere()
shape.transform = translate(0, 0, 1)
i = Intersection(5, shape)
comps = i.prepare_computations(r)
self.assertTrue(comps.over_point.z < -EPSILON / 2)
self.assertTrue(comps.point.z > comps.over_point.z)
def test_world3(self):
w = World()
r = Ray(Point(0, 0, -5), Vector(0, 0, 1))
shape = w.objs[0]
i = Intersection(4, shape)
comps = i.prepare_computations(r)
c = w.shade_hit(comps)
self.assertTrue(Color(0.38066, 0.47583, 0.2855).equals(c))
def test_reflective2(self):
shape = Plane()
r = Ray(Point(0, 1, -1), Vector(0, -sqrt(2) / 2, sqrt(2) / 2))
i = Intersection(sqrt(2), shape)
comps = i.prepare_computations(r)
self.assertTrue(
Vector(0,
sqrt(2) / 2,
sqrt(2) / 2).equals(comps.reflectv))
def test_reflect1(self):
w = World()
r = Ray(Point(0, 0, 0), Vector(0, 0, 1))
shape = w.objs[1]
shape.material.abmient = 1
i = Intersection(1, shape)
comps = i.prepare_computations(r)
color = w.reflected_color(comps)
self.assertTrue(Color(0, 0, 0).equals(color))
def test_maximum_recursive_depth(self):
w = World()
shape = Plane()
shape.material.reflective = 0.5
shape.set_transform(translate(0, -1, 0))
r = Ray(Point(0, 0, -3), Vector(0, -sqrt(2)/2, sqrt(2)/2))
i = Intersection(sqrt(2), shape)
comps = i.prepare_computations(r)
color = w.reflected_color(comps, 0)
self.assertTrue(Color(0, 0, 0).equals(color))
def test_prepare3(self):
r = Ray(Point(0, 0, 0), Vector(0, 0, 1))
s = Sphere()
i = Intersection(1, s)
comps = i.prepare_computations(r)
self.assertTrue(comps.inside)
self.assertTrue(Point(0, 0, 1).equals(comps.point))
self.assertTrue(Vector(0, 0, -1).equals(comps.eyev))
self.assertTrue(Vector(0, 0, -1).equals(comps.normalv))
def test_shade_hit(self):
w = World()
shape = Plane()
shape.material.reflective = 0.5
shape.set_transform(translate(0.0, -1.0, 0.0))
w.objs.append(shape)
r = Ray(Point(0.0, 0.0, -3.0), Vector(0.0, -sqrt(2)/2, sqrt(2)/2))
i = Intersection(sqrt(2), shape)
comps = i.prepare_computations(r)
color = w.shade_hit(comps)
self.assertTrue(Color(0.87677, 0.92436, 0.82918).equals(color))
def test_prepare1(self):
r = Ray(Point(0, 0, -5), Vector(0, 0, 1))
s = Sphere()
i = Intersection(4, s)
comps = i.prepare_computations(r)
self.assertEqual(i.t, comps.t)
self.assertTrue(i.obj == comps.obj)
self.assertTrue(Point(0, 0, -1).equals(comps.point))
self.assertTrue(Vector(0, 0, -1).equals(comps.eyev))
self.assertTrue(Vector(0, 0, -1).equals(comps.normalv))
def test_reflect1(self):
w = World()
shape = Plane()
shape.material.reflective = 0.5
shape.set_transform(translate(0.0, -1.0, 0.0))
w.objs.append(shape)
r = Ray(Point(0.0, 0.0, -3.0), Vector(0.0, -sqrt(2)/2, sqrt(2)/2))
i = Intersection(sqrt(2), shape)
comps = i.prepare_computations(r)
color = w.reflected_color(comps)
# print(color)
self.assertTrue(Color(0.19032, 0.2379, 0.14274).equals(color))
def test_under_point1(self):
r = Ray(Point(0, 0, -5), Vector(0, 0, 1))
shape = GlassSphere()
shape.set_transform(translate(0, 0, 1))
i = Intersection(5, shape)
xs = Intersections([i])
comps = i.prepare_computations(r, xs)
# print(comps.normalv)
# print(comps.point)
# print(comps.under_point.z)
self.assertTrue(comps.under_point.z > EPSILON / 2)
self.assertTrue(comps.point.z < comps.under_point.z)
def test_shadow5(self):
w = World()
light = Light(Point(0, 0, -10), Color(1, 1, 1))
w.light = light
s1 = Sphere()
s2 = Sphere()
s2.transform = translate(0, 0, 10)
w.objs = [s1, s2]
r = Ray(Point(0, 0, 5), Vector(0, 0, 1))
i = Intersection(4, s2)
comps = i.prepare_computations(r)
c = w.shade_hit(comps)
self.assertTrue(Color(0.1, 0.1, 0.1).equals(c))
def test_prepare2(self):
r = Ray(Point(0, 0, -5), Vector(0, 0, 1))
s = Sphere()
i = Intersection(4, s)
comps = i.prepare_computations(r)
self.assertFalse(comps.inside)