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import numpy as np
import pytest
from trimesh import transformations
from pyrender import (DirectionalLight, PerspectiveCamera, Mesh, Node)
def test_nodes():
x = Node()
assert x.name is None
assert x.camera is None
assert x.children == []
assert x.skin is None
assert np.allclose(x.matrix, np.eye(4))
assert x.mesh is None
assert np.allclose(x.rotation, [0,0,0,1])
assert np.allclose(x.scale, np.ones(3))
assert np.allclose(x.translation, np.zeros(3))
assert x.weights is None
assert x.light is None
x.name = 'node'
# Test node light/camera/mesh tests
c = PerspectiveCamera(yfov=2.0)
m = Mesh([])
d = DirectionalLight()
x.camera = c
assert x.camera == c
with pytest.raises(TypeError):
x.camera = m
x.camera = d
x.camera = None
x.mesh = m
assert x.mesh == m
with pytest.raises(TypeError):
x.mesh = c
x.mesh = d
x.light = d
assert x.light == d
with pytest.raises(TypeError):
x.light = m
x.light = c
# Test transformations getters/setters/etc...
# Set up test values
x = np.array([1.0, 0.0, 0.0])
y = np.array([0.0, 1.0, 0.0])
t = np.array([1.0, 2.0, 3.0])
s = np.array([0.5, 2.0, 1.0])
Mx = transformations.rotation_matrix(np.pi / 2.0, x)
qx = np.roll(transformations.quaternion_about_axis(np.pi / 2.0, x), -1)
Mxt = Mx.copy()
Mxt[:3,3] = t
S = np.eye(4)
S[:3,:3] = np.diag(s)
Mxts = Mxt.dot(S)
My = transformations.rotation_matrix(np.pi / 2.0, y)
qy = np.roll(transformations.quaternion_about_axis(np.pi / 2.0, y), -1)
Myt = My.copy()
Myt[:3,3] = t
x = Node(matrix=Mx)
assert np.allclose(x.matrix, Mx)
assert np.allclose(x.rotation, qx)
assert np.allclose(x.translation, np.zeros(3))
assert np.allclose(x.scale, np.ones(3))
x.matrix = My
assert np.allclose(x.matrix, My)
assert np.allclose(x.rotation, qy)
assert np.allclose(x.translation, np.zeros(3))
assert np.allclose(x.scale, np.ones(3))
x.translation = t
assert np.allclose(x.matrix, Myt)
assert np.allclose(x.rotation, qy)
x.rotation = qx
assert np.allclose(x.matrix, Mxt)
x.scale = s
assert np.allclose(x.matrix, Mxts)
x = Node(matrix=Mxt)
assert np.allclose(x.matrix, Mxt)
assert np.allclose(x.rotation, qx)
assert np.allclose(x.translation, t)
assert np.allclose(x.scale, np.ones(3))
x = Node(matrix=Mxts)
assert np.allclose(x.matrix, Mxts)
assert np.allclose(x.rotation, qx)
assert np.allclose(x.translation, t)
assert np.allclose(x.scale, s)
# Individual element getters
x.scale[0] = 0
assert np.allclose(x.scale[0], 0)
x.translation[0] = 0
assert np.allclose(x.translation[0], 0)
x.matrix = np.eye(4)
x.matrix[0,0] = 500
assert x.matrix[0,0] == 1.0
# Failures
with pytest.raises(ValueError):
x.matrix = 5 * np.eye(4)
with pytest.raises(ValueError):
x.matrix = np.eye(5)
with pytest.raises(ValueError):
x.matrix = np.eye(4).dot([5,1,1,1])
with pytest.raises(ValueError):
x.rotation = np.array([1,2])
with pytest.raises(ValueError):
x.rotation = np.array([1,2,3])
with pytest.raises(ValueError):
x.rotation = np.array([1,2,3,4])
with pytest.raises(ValueError):
x.translation = np.array([1,2,3,4])
with pytest.raises(ValueError):
x.scale = np.array([1,2,3,4])
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