forked from bartvdbraak/blender
110 lines
3.5 KiB
Python
110 lines
3.5 KiB
Python
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# ##### BEGIN GPL LICENSE BLOCK #####
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#
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# ##### END GPL LICENSE BLOCK #####
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import bpy
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from rigify import get_bone_data
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def main(obj, delta_name):
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'''
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Use this bone to define a delta thats applied to its child in pose mode.
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'''
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arm = obj.data
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mode_orig = obj.mode
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bpy.ops.object.mode_set(mode='OBJECT')
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delta_pbone = obj.pose.bones[delta_name]
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children = delta_pbone.children
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if len(children) != 1:
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print("only 1 child supported for delta")
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child_name = children[0].name
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arm, child_pbone, child_bone = get_bone_data(obj, child_name)
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delta_phead = delta_pbone.head.copy()
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delta_ptail = delta_pbone.tail.copy()
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delta_pmatrix = delta_pbone.matrix.copy()
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child_phead = child_pbone.head.copy()
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child_ptail = child_pbone.tail.copy()
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child_pmatrix = child_pbone.matrix.copy()
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children = delta_pbone.children
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bpy.ops.object.mode_set(mode='EDIT')
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delta_ebone = arm.edit_bones[delta_name]
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child_ebone = arm.edit_bones[child_name]
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delta_head = delta_ebone.head.copy()
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delta_tail = delta_ebone.tail.copy()
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# arm, parent_pbone, parent_bone = get_bone_data(obj, delta_name)
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child_head = child_ebone.head.copy()
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child_tail = child_ebone.tail.copy()
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arm.edit_bones.remove(delta_ebone)
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del delta_ebone # cant use thz
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bpy.ops.object.mode_set(mode='OBJECT')
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# Move the child bone to the deltas location
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obj.animation_data_create()
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child_pbone = obj.pose.bones[child_name]
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# ------------------- drivers
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child_pbone.rotation_mode = 'XYZ'
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rot = delta_pmatrix.invert().rotationPart() * child_pmatrix.rotationPart()
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rot = rot.invert().toEuler()
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fcurve_drivers = child_pbone.driver_add("rotation_euler", -1)
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for i, fcurve_driver in enumerate(fcurve_drivers):
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driver = fcurve_driver.driver
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driver.type = 'AVERAGE'
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#mod = fcurve_driver.modifiers.new('GENERATOR')
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mod = fcurve_driver.modifiers[0]
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mod.poly_order = 1
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mod.coefficients[0] = rot[i]
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mod.coefficients[1] = 0.0
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# tricky, find the transform to drive the bone to this location.
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delta_head_offset = child_pmatrix.rotationPart() * (delta_phead - child_phead)
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fcurve_drivers = child_pbone.driver_add("location", -1)
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for i, fcurve_driver in enumerate(fcurve_drivers):
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driver = fcurve_driver.driver
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driver.type = 'AVERAGE'
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#mod = fcurve_driver.modifiers.new('GENERATOR')
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mod = fcurve_driver.modifiers[0]
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mod.poly_order = 1
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mod.coefficients[0] = delta_head_offset[i]
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mod.coefficients[1] = 0.0
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# arm, parent_pbone, parent_bone = get_bone_data(obj, delta_name)
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bpy.ops.object.mode_set(mode='EDIT')
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bpy.ops.object.mode_set(mode=mode_orig)
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