def parent_bones(self):
self.targets = force_lazy(self.bones)
assert len(self.targets) > 0
if len(self.targets) == 1:
target = force_lazy(self.targets[0])
if isinstance(target, tuple):
target = target[0]
self.set_bone_parent(
self.output_bone,
target,
inherit_scale='NONE' if self.copy_scale else 'FIX_SHEAR')
def generate_bones(self):
self.output_bone = self.node.make_bone(make_derived_name(
self.node.name, 'mch', '_arm'),
1 / 4,
rig=self.rig)
self.rig.generator.disable_auto_parent(self.output_bone)
if self.orientation:
matrix = force_lazy(self.orientation).to_matrix().to_4x4()
matrix.translation = self.node.point
self.get_bone(self.output_bone).matrix = matrix
def rig_bones(self):
if len(self.targets) > 1:
self.make_constraint(self.output_bone,
'ARMATURE',
targets=force_lazy(self.bones),
use_deform_preserve_volume=True)
self.make_constraint(self.output_bone, 'LIMIT_ROTATION')
if self.copy_rotation:
self.make_constraint(self.output_bone, 'COPY_ROTATION',
self.copy_rotation)
if self.copy_scale:
self.make_constraint(self.output_bone, 'COPY_SCALE',
self.copy_scale)
def make_scale_properties(self):
org = self.bones.org
bone = self.get_bone(org)
input_bone = force_lazy(self.input_ref)
bone['s'] = 0.0
bone['p'] = 0.0
bone['f'] = 0.0
variables = {
'sx': driver_var_transform(self.obj, input_bone, type='SCALE_X', space='LOCAL'),
'sy': driver_var_transform(self.obj, input_bone, type='SCALE_Z', space='LOCAL'),
}
self.make_driver(bone, quote_property('s'), expression='sx+sy-2', variables=variables)
self.make_driver(bone, quote_property('p'), expression='sx-sy', variables=variables)
variables = {
**variables,
'tx': driver_var_transform(self.obj, input_bone, type='LOC_X', space='LOCAL'),
'ty': driver_var_transform(self.obj, input_bone, type='LOC_Z', space='LOCAL'),
}
self.make_driver(bone, quote_property('f'), expression='max(1e-5,(sx+sy-2)/2+sqrt(tx*tx+ty*ty))', variables=variables)
def parent_bones(self):
self.rig_parent_bone = force_lazy(
self.get_child_chain_parent_next(self))
def output_bone(self):
return force_lazy(self._output_bone)