def do(self):
cache = context.application.cache
for node in cache.nodes:
transformation = Complete()
translated_children = []
for child in node.children:
if isinstance(child, GLTransformationMixin) and isinstance(child.transformation, Translation):
if child.get_fixed():
translated_children = []
break
translated_children.append(child)
if len(translated_children) == 0:
continue
mass, com = compute_center_of_mass(yield_particles(node))
if mass == 0.0:
continue
transformation.t = com
tensor = compute_inertia_tensor(yield_particles(node), com)
transformation.r = default_rotation_matrix(tensor)
CenterAlignBase.do(self, node, translated_children, transformation)
