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import numpy as np
import pytest
import trimesh
from pyrender import (Mesh, PerspectiveCamera, DirectionalLight,
SpotLight, PointLight, Scene, Node, OrthographicCamera)
def test_scenes():
# Basics
s = Scene()
assert np.allclose(s.bg_color, np.ones(4))
assert np.allclose(s.ambient_light, np.zeros(3))
assert len(s.nodes) == 0
assert s.name is None
s.name = 'asdf'
s.bg_color = None
s.ambient_light = None
assert np.allclose(s.bg_color, np.ones(4))
assert np.allclose(s.ambient_light, np.zeros(3))
assert s.nodes == set()
assert s.cameras == set()
assert s.lights == set()
assert s.point_lights == set()
assert s.spot_lights == set()
assert s.directional_lights == set()
assert s.meshes == set()
assert s.camera_nodes == set()
assert s.light_nodes == set()
assert s.point_light_nodes == set()
assert s.spot_light_nodes == set()
assert s.directional_light_nodes == set()
assert s.mesh_nodes == set()
assert s.main_camera_node is None
assert np.all(s.bounds == 0)
assert np.all(s.centroid == 0)
assert np.all(s.extents == 0)
assert np.all(s.scale == 0)
# From trimesh scene
tms = trimesh.load('tests/data/WaterBottle.glb')
s = Scene.from_trimesh_scene(tms)
assert len(s.meshes) == 1
assert len(s.mesh_nodes) == 1
# Test bg color formatting
s = Scene(bg_color=[0, 1.0, 0])
assert np.allclose(s.bg_color, np.array([0.0, 1.0, 0.0, 1.0]))
# Test constructor for nodes
n1 = Node()
n2 = Node()
n3 = Node()
nodes = [n1, n2, n3]
s = Scene(nodes=nodes)
n1.children.append(n2)
s = Scene(nodes=nodes)
n3.children.append(n2)
with pytest.raises(ValueError):
s = Scene(nodes=nodes)
n3.children = []
n2.children.append(n3)
n3.children.append(n2)
with pytest.raises(ValueError):
s = Scene(nodes=nodes)
# Test node accessors
n1 = Node()
n2 = Node()
n3 = Node()
nodes = [n1, n2]
s = Scene(nodes=nodes)
assert s.has_node(n1)
assert s.has_node(n2)
assert not s.has_node(n3)
# Test node poses
for n in nodes:
assert np.allclose(s.get_pose(n), np.eye(4))
with pytest.raises(ValueError):
s.get_pose(n3)
with pytest.raises(ValueError):
s.set_pose(n3, np.eye(4))
tf = np.eye(4)
tf[:3,3] = np.ones(3)
s.set_pose(n1, tf)
assert np.allclose(s.get_pose(n1), tf)
assert np.allclose(s.get_pose(n2), np.eye(4))
nodes = [n1, n2, n3]
tf2 = np.eye(4)
tf2[:3,:3] = np.diag([-1,-1,1])
n1.children.append(n2)
n1.matrix = tf
n2.matrix = tf2
s = Scene(nodes=nodes)
assert np.allclose(s.get_pose(n1), tf)
assert np.allclose(s.get_pose(n2), tf.dot(tf2))
assert np.allclose(s.get_pose(n3), np.eye(4))
n1 = Node()
n2 = Node()
n3 = Node()
n1.children.append(n2)
s = Scene()
s.add_node(n1)
with pytest.raises(ValueError):
s.add_node(n2)
s.set_pose(n1, tf)
assert np.allclose(s.get_pose(n1), tf)
assert np.allclose(s.get_pose(n2), tf)
s.set_pose(n2, tf2)
assert np.allclose(s.get_pose(n2), tf.dot(tf2))
# Test node removal
n1 = Node()
n2 = Node()
n3 = Node()
n1.children.append(n2)
n2.children.append(n3)
s = Scene(nodes=[n1, n2, n3])
s.remove_node(n2)
assert len(s.nodes) == 1
assert n1 in s.nodes
assert len(n1.children) == 0
assert len(n2.children) == 1
s.add_node(n2, parent_node=n1)
assert len(n1.children) == 1
n1.matrix = tf
n3.matrix = tf2
assert np.allclose(s.get_pose(n3), tf.dot(tf2))
# Now test ADD function
s = Scene()
m = Mesh([], name='m')
cp = PerspectiveCamera(yfov=2.0)
co = OrthographicCamera(xmag=1.0, ymag=1.0)
dl = DirectionalLight()
pl = PointLight()
sl = SpotLight()
n1 = s.add(m, name='mn')
assert n1.mesh == m
assert len(s.nodes) == 1
assert len(s.mesh_nodes) == 1
assert n1 in s.mesh_nodes
assert len(s.meshes) == 1
assert m in s.meshes
assert len(s.get_nodes(node=n2)) == 0
n2 = s.add(m, pose=tf)
assert len(s.nodes) == len(s.mesh_nodes) == 2
assert len(s.meshes) == 1
assert len(s.get_nodes(node=n1)) == 1
assert len(s.get_nodes(node=n1, name='mn')) == 1
assert len(s.get_nodes(name='mn')) == 1
assert len(s.get_nodes(obj=m)) == 2
assert len(s.get_nodes(obj=m, obj_name='m')) == 2
assert len(s.get_nodes(obj=co)) == 0
nsl = s.add(sl, name='sln')
npl = s.add(pl, parent_name='sln')
assert nsl.children[0] == npl
ndl = s.add(dl, parent_node=npl)
assert npl.children[0] == ndl
nco = s.add(co)
ncp = s.add(cp)
assert len(s.light_nodes) == len(s.lights) == 3
assert len(s.point_light_nodes) == len(s.point_lights) == 1
assert npl in s.point_light_nodes
assert len(s.spot_light_nodes) == len(s.spot_lights) == 1
assert nsl in s.spot_light_nodes
assert len(s.directional_light_nodes) == len(s.directional_lights) == 1
assert ndl in s.directional_light_nodes
assert len(s.cameras) == len(s.camera_nodes) == 2
assert s.main_camera_node == nco
s.main_camera_node = ncp
s.remove_node(ncp)
assert len(s.cameras) == len(s.camera_nodes) == 1
assert s.main_camera_node == nco
s.remove_node(n2)
assert len(s.meshes) == 1
s.remove_node(n1)
assert len(s.meshes) == 0
s.remove_node(nsl)
assert len(s.lights) == 0
s.remove_node(nco)
assert s.main_camera_node is None
s.add_node(n1)
s.clear()
assert len(s.nodes) == 0
# Trigger final errors
with pytest.raises(ValueError):
s.main_camera_node = None
with pytest.raises(ValueError):
s.main_camera_node = ncp
with pytest.raises(ValueError):
s.add(m, parent_node=n1)
with pytest.raises(ValueError):
s.add(m, name='asdf')
s.add(m, name='asdf')
s.add(m, parent_name='asdf')
with pytest.raises(ValueError):
s.add(m, parent_name='asfd')
with pytest.raises(TypeError):
s.add(None)
s.clear()
# Test bounds
m1 = Mesh.from_trimesh(trimesh.creation.box())
m2 = Mesh.from_trimesh(trimesh.creation.box())
m3 = Mesh.from_trimesh(trimesh.creation.box())
n1 = Node(mesh=m1)
n2 = Node(mesh=m2, translation=[1.0, 0.0, 0.0])
n3 = Node(mesh=m3, translation=[0.5, 0.0, 1.0])
s.add_node(n1)
s.add_node(n2)
s.add_node(n3)
assert np.allclose(s.bounds, [[-0.5, -0.5, -0.5], [1.5, 0.5, 1.5]])
s.clear()
s.add_node(n1)
s.add_node(n2, parent_node=n1)
s.add_node(n3, parent_node=n2)
assert np.allclose(s.bounds, [[-0.5, -0.5, -0.5], [2.0, 0.5, 1.5]])
tf = np.eye(4)
tf[:3,3] = np.ones(3)
s.set_pose(n3, tf)
assert np.allclose(s.bounds, [[-0.5, -0.5, -0.5], [2.5, 1.5, 1.5]])
s.remove_node(n2)
assert np.allclose(s.bounds, [[-0.5, -0.5, -0.5], [0.5, 0.5, 0.5]])
s.clear()
assert np.allclose(s.bounds, 0.0)
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