def Lighting(material, obj, light, point, eyev, normalv, inShadow=None):
color = Color()
if material.pattern != None:
color = pattern_at_object(material.pattern, obj, point)
else:
color = material.color
effective_color = Color.multiply(color, light.intensity)
lightv = Vector3.Normalize(Tuples.sub(light.position, point))
ambient = Color.multiply(effective_color, material.ambient)
light_dot_normal = Tuples.dot(lightv, normalv)
if light_dot_normal < 0 or inShadow == True:
diffuse = Color()
specular = Color()
else:
diffuse = Color.multiply(effective_color,
material.diffuse * light_dot_normal)
reflectv = Tuples.reflect(Tuples.NegateTuple(lightv), normalv)
reflect_dot_eye = Tuples.dot(reflectv, eyev)
if reflect_dot_eye <= 0:
specular = Color()
else:
factor = pow(reflect_dot_eye, material.shininess)
specular = Color.multiply(light.intensity,
material.specular * factor)
return Color.add(Color.add(ambient, diffuse), specular)
def intersect(self, ray):
intersection = self.get_closest_intersection(ray)
if not intersection:
return None
[index, point, angle] = intersection
intensity = AngularLighting.light_intensity_from_angle(angle)
angle_color = int(255 * intensity)
return Color(angle_color, angle_color, angle_color)
def __init__(self,
color=Color(1, 1, 1),
ambient=0.1,
diffuse=0.9,
specular=0.9):
self.id = id(self)
self.color = color
self.ambient = ambient
self.diffuse = diffuse
self.specular = specular
self.shininess = 200.0
self.reflective = 0.0
self.refractive_index = 1.0
self.transparency = 0
self.pattern = None
self.name = "DefaultMaterial"
def render_show_single_frame_tri():
# Create camera
camera = Camera(position=Vector(0, 0, 0),
rotation=Vector(0, 0, 0),
height=60,
width=60,
focal_length=25)
# Create scene
scene = Scene(camera=camera)
scene.set_resolution(30)
# Create object
obj = Triangle(Vector(0, 0, 0), Vector(10, 0, 0), Vector(4, 0, 10),
Color(255, 255, 255))
# Add object to scene
scene.add_object(obj)
camera_position_vector = Vector(0, 12, 0)
scene.camera.setPosition(camera_position_vector)
scene.camera.setRotation(Vector(0, 0, 0))
s = time.time()
# Render the scene to an rgb array
rendered_scene = scene.render_perspective()
e = time.time()
print(
f"{scene.camera.width * scene.resolution}x{scene.camera.height * scene.resolution} took {e - s} seconds"
)
# Render the image
show_image(rendered_scene, scene.camera.width * scene.resolution,
scene.camera.height * scene.resolution)
