def test_initial_state( unittest, node ):
matrix = matrix44.identity()
#
# Axis
#
test_axis( unittest, node.transform.object, matrix )
test_axis( unittest, node.transform.inertial, matrix )
test_axis( unittest, node.world_transform.object, matrix )
test_axis( unittest, node.world_transform.inertial, matrix )
#
# Quaternion
#
quat = quaternion.identity()
unittest.assertTrue(
numpy.allclose( node.transform.orientation, quat ),
"Object quaternion incorrect"
)
unittest.assertTrue(
numpy.allclose( node.world_transform.orientation, quat ),
"World quaternion incorrect"
)
#
# Scale
#
test_scale( unittest, node.transform, [1.0, 1.0, 1.0] )
test_scale( unittest, node.world_transform, [1.0, 1.0, 1.0] )
#
# Translation
#
test_translation( unittest, node.transform, [0.0, 0.0, 0.0] )
test_translation( unittest, node.world_transform, [0.0, 0.0, 0.0] )
def test_translation_with_rotation( self ):
root = SceneNode( '/root' )
child = SceneNode( '/child' )
root.add_child( child )
#
# Rotate 180 deg (1 * pi) about the Y axis (yaw)
#
root.transform.object.rotate_y( math.pi )
identity = matrix44.identity()
root_matrix = matrix44.create_from_y_rotation( math.pi )
#
# Translate the child node
#
child.transform.translation = [1.0, 1.0, 1.0]
test_translation( self, root.transform, [0.0, 0.0, 0.0] )
test_translation( self, root.world_transform, [0.0, 0.0, 0.0] )
test_translation( self, child.transform, [1.0, 1.0, 1.0] )
# Y does not invert
test_translation( self, child.world_transform, [-1.0, 1.0,-1.0] )
def test_rotation( self ):
"""
Rotation and Inheritance
"""
# we'll add a child to a root node
# we'll move the child
# rotate the root
# and check the child is where it should be
# the child should be moved somewhere that will
# make it easy to check
root = SceneNode( '/root' )
child = SceneNode( '/child' )
root.add_child( child )
#
# Rotate 180 deg (1 * pi) about the Y axis (yaw)
#
root.transform.object.rotate_y( math.pi )
identity = matrix44.identity()
root_matrix = matrix44.create_from_y_rotation( math.pi )
# root object
test_axis( self, root.transform.object, root_matrix )
test_axis( self, root.transform.inertial, identity )
test_axis( self, root.world_transform.object, root_matrix )
test_axis( self, root.world_transform.inertial, identity )
child_matrix = matrix44.identity()
test_axis( self, child.transform.object, child_matrix )
test_axis( self, child.transform.inertial, identity )
test_axis( self, child.world_transform.object, root_matrix )
test_axis( self, child.world_transform.inertial, identity )
# check the node matrix matches what we're seeing in
# the transform axis values
self.assertTrue(
numpy.allclose( root.transform.matrix, root_matrix ),
"Root Local Matrix incorrect"
)
self.assertTrue(
numpy.allclose( root.world_transform.matrix, root_matrix ),
"Root RootMatrix incorrect"
)
self.assertTrue(
numpy.allclose( child.transform.matrix, identity ),
"Child Local Matrix incorrect"
)
self.assertTrue(
numpy.allclose( child.world_transform.matrix, root_matrix ),
"Child RootMatrix incorrect"
)
#
# Rotate 180 deg (1 * pi) about the X axis (pitch)
#
# rotate 180 deg / 1pi about the x axis (pitch)
child.transform.object.rotate_x( math.pi )
child_matrix = matrix44.multiply(
matrix44.create_from_x_rotation( math.pi ),
child_matrix
)
child_world = matrix44.multiply( child_matrix, root_matrix )
# root object
test_axis( self, root.transform.object, root_matrix )
test_axis( self, root.transform.inertial, identity )
test_axis( self, root.world_transform.object, root_matrix )
test_axis( self, root.world_transform.inertial, identity )
test_axis( self, child.transform.object, child_matrix )
test_axis( self, child.transform.inertial, identity )
test_axis( self, child.world_transform.object, child_world )
test_axis( self, child.world_transform.inertial, identity )
# check the node matrix matches what we're seeing in
# the transform axis values
self.assertTrue(
numpy.allclose( root.transform.matrix, root_matrix ),
"Root Local Matrix incorrect"
)
self.assertTrue(
numpy.allclose( root.world_transform.matrix, root_matrix ),
"Root RootMatrix incorrect"
)
self.assertTrue(
numpy.allclose( child.transform.matrix, child_matrix ),
"Child Local Matrix incorrect"
)
self.assertTrue(
numpy.allclose( child.world_transform.matrix, child_world ),
"Child RootMatrix incorrect"
)
