90 lines
3.0 KiB
Python
90 lines
3.0 KiB
Python
# SPDX-License-Identifier: GPL-2.0-or-later
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import bpy
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from .naming import make_derived_name
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from .bones import put_bone, copy_bone_position, align_bone_orientation
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from .widgets_basic import create_pivot_widget
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from .misc import force_lazy
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from ..base_rig import RigComponent, stage
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class CustomPivotControl(RigComponent):
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"""
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A utility that generates a pivot control with a custom position.
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Generates a control bone, and a MCH output bone.
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"""
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def __init__(
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self, rig, id_name, org_bone, *,
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name=None, parent=None, position=None, matrix=None,
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scale=1.0, scale_mch=None,
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move_to=None, align_to=None, snap_to=None,
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widget_axis=1.5, widget_cap=1.0, widget_square=True,
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):
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super().__init__(rig)
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assert rig.generator.stage == 'generate_bones'
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self.bones = rig.bones
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self.id_name = id_name
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self.parent = parent
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self.scale = scale or 1
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self.scale_mch = scale_mch or (self.scale * 0.7)
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self.move_to = move_to
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self.align_to = align_to
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self.snap_to = snap_to
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self.widget_axis = widget_axis
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self.widget_cap = widget_cap
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self.widget_square = widget_square
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name = name or make_derived_name(org_bone, 'ctrl', '_pivot')
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self.do_make_bones(org_bone, name, position, matrix)
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@property
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def control(self):
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return self.ctrl
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@property
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def output(self):
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return self.mch
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def do_make_bones(self, org, name, position, matrix):
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self.bones.ctrl[self.id_name] = self.ctrl = self.copy_bone(org, name, parent=not self.parent, scale=self.scale)
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self.bones.mch[self.id_name] = self.mch = self.copy_bone(org, make_derived_name(name, 'mch'), scale=self.scale_mch)
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if position or matrix:
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put_bone(self.obj, self.ctrl, position, matrix=matrix)
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put_bone(self.obj, self.mch, position, matrix=matrix)
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def parent_bones(self):
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if self.snap_to:
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bone = force_lazy(self.snap_to)
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copy_bone_position(self.obj, bone, self.ctrl, scale=self.scale)
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copy_bone_position(self.obj, bone, self.mch, scale=self.scale_mch)
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if self.move_to:
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pos = self.get_bone(force_lazy(self.move_to)).head
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put_bone(self.obj, self.ctrl, pos)
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put_bone(self.obj, self.mch, pos)
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if self.align_to:
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self.align_to = force_lazy(self.align_to)
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align_bone_orientation(self.obj, self.ctrl, self.align_to)
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align_bone_orientation(self.obj, self.mch, self.align_to)
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if self.parent:
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self.set_bone_parent(self.ctrl, force_lazy(self.parent))
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self.set_bone_parent(self.mch, self.ctrl)
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def rig_bones(self):
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self.make_constraint(self.mch, 'COPY_LOCATION', self.ctrl, space='LOCAL', invert_xyz=(True,)*3)
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def generate_widgets(self):
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create_pivot_widget(self.obj, self.ctrl, axis_size=self.widget_axis, cap_size=self.widget_cap, square=self.widget_square)
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