1 files changed, 142 insertions, 0 deletions
diff --git a/rigify/rigs/skin/anchor.py b/rigify/rigs/skin/anchor.py
new file mode 100644
index 00000000..0392761f
--- /dev/null
+++ b/rigify/rigs/skin/anchor.py
@@ -0,0 +1,142 @@
+# ====================== BEGIN GPL LICENSE BLOCK ======================
+#
+#  This program is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU General Public License
+#  as published by the Free Software Foundation; either version 2
+#  of the License, or (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software Foundation,
+#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# ======================= END GPL LICENSE BLOCK ========================
+
+# <pep8 compliant>
+
+import bpy
+
+from ...utils.naming import make_derived_name
+from ...utils.widgets import layout_widget_dropdown, create_registered_widget
+from ...utils.mechanism import move_all_constraints
+
+from ...base_rig import stage
+
+from .skin_nodes import ControlBoneNode, ControlNodeIcon, ControlNodeEnd
+from .skin_rigs import BaseSkinChainRigWithRotationOption
+
+from ..basic.raw_copy import RelinkConstraintsMixin
+
+
+class Rig(BaseSkinChainRigWithRotationOption, RelinkConstraintsMixin):
+    """Custom skin control node."""
+
+    chain_priority = 20
+
+    def find_org_bones(self, bone):
+        return bone.name
+
+    def initialize(self):
+        super().initialize()
+
+        self.make_deform = self.params.make_extra_deform
+
+    ####################################################
+    # CONTROL NODES
+
+    @stage.initialize
+    def init_control_nodes(self):
+        org = self.bones.org
+        name = make_derived_name(org, 'ctrl')
+
+        self.control_node = node = ControlBoneNode(
+            self, org, name, icon=ControlNodeIcon.CUSTOM, chain_end=ControlNodeEnd.START)
+
+        node.hide_control = self.params.skin_anchor_hide
+
+    def make_control_node_widget(self, node):
+        create_registered_widget(self.obj, node.control_bone,
+                                 self.params.pivot_master_widget_type or 'cube')
+
+    def extend_control_node_rig(self, node):
+        if node.rig == self:
+            org = self.bones.org
+
+            self.copy_bone_properties(org, node.control_bone)
+
+            self.relink_bone_constraints(org)
+
+            move_all_constraints(self.obj, org, node.control_bone)
+
+    ##############################
+    # ORG chain
+
+    @stage.parent_bones
+    def parent_org_chain(self):
+        self.set_bone_parent(self.bones.org, self.control_node.control_bone)
+
+    ##############################
+    # Deform bone
+
+    @stage.generate_bones
+    def make_deform_bone(self):
+        if self.make_deform:
+            self.bones.deform = self.copy_bone(
+                self.bones.org, make_derived_name(self.bones.org, 'def'))
+
+    @stage.parent_bones
+    def parent_deform_chain(self):
+        if self.make_deform:
+            self.set_bone_parent(self.bones.deform, self.bones.org)
+
+    ####################################################
+    # SETTINGS
+
+    @classmethod
+    def add_parameters(self, params):
+        params.make_extra_deform = bpy.props.BoolProperty(
+            name="Extra Deform",
+            default=False,
+            description="Create an optional deform bone"
+        )
+
+        params.skin_anchor_hide = bpy.props.BoolProperty(
+            name='Suppress Control',
+            default=False,
+            description='Make the control bone a mechanism bone invisible to the user and only affected by constraints'
+        )
+
+        params.pivot_master_widget_type = bpy.props.StringProperty(
+            name="Widget Type",
+            default='cube',
+            description="Choose the type of the widget to create"
+        )
+
+        self.add_relink_constraints_params(params)
+
+        super().add_parameters(params)
+
+    @classmethod
+    def parameters_ui(self, layout, params):
+        col = layout.column()
+        col.prop(params, "make_extra_deform", text='Generate Deform Bone')
+        col.prop(params, "skin_anchor_hide")
+
+        row = layout.row()
+        row.active = not params.skin_anchor_hide
+        layout_widget_dropdown(row, params, "pivot_master_widget_type")
+
+        layout.prop(params, "relink_constraints")
+
+        layout.label(text="All constraints are moved to the control bone.", icon='INFO')
+
+        super().parameters_ui(layout, params)
+
+
+def create_sample(obj):
+    from rigify.rigs.basic.super_copy import create_sample as inner
+    obj.pose.bones[inner(obj)["Bone"]].rigify_type = 'skin.anchor'