def test_lightning_light_behind():
m = DefaultMaterial()
position = Point(0, 0, 0)
eyev = Vector(0, 0, -1)
normalv = Vector(0, 0, -1)
light = PointLight(Point(0, 0, 10), Color(1, 1, 1))
result = m.lighting(light, position, eyev, normalv)
assert result == Color(0.1, 0.1, 0.1)
def test_lightning_eye_angle():
m = DefaultMaterial()
position = Point(0, 0, 0)
eyev = Vector(0, sqrt(2) / 2, -sqrt(2) / 2)
normalv = Vector(0, 0, -1)
light = PointLight(Point(0, 0, -10), Color(1, 1, 1))
result = m.lighting(light, position, eyev, normalv)
assert result == Color(1.0, 1.0, 1.0)
def test_lighting_direct():
m = DefaultMaterial()
position = Point(0, 0, 0)
eyev = Vector(0, 0, -1)
normalv = Vector(0, 0, -1)
light = PointLight(Point(0, 0, -10), Color(1, 1, 1))
result = m.lighting(light, position, eyev, normalv)
assert result == Color(1.9, 1.9, 1.9)
def test_lightning_light_angle():
m = DefaultMaterial()
position = Point(0, 0, 0)
eyev = Vector(0, 0, -1)
normalv = Vector(0, 0, -1)
light = PointLight(Point(0, 10, -10), Color(1, 1, 1))
result = m.lighting(light, position, eyev, normalv)
assert result == Color(0.7363961030678927, 0.7363961030678927,
0.7363961030678927)