forked from bartvdbraak/blender
220 lines
7.0 KiB
Python
220 lines
7.0 KiB
Python
# ##### 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, empty_layer, copy_bone_simple
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from rna_prop_ui import rna_idprop_ui_get, rna_idprop_ui_prop_get
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from functools import reduce
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METARIG_NAMES = "finger_01", "finger_02", "finger_03"
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def metarig_template():
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bpy.ops.object.mode_set(mode='EDIT')
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obj = bpy.context.object
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arm = obj.data
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bone = arm.edit_bones.new('finger.01')
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bone.head[:] = 0.0000, 0.0000, 0.0000
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bone.tail[:] = 0.8788, -0.4584, -0.1327
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bone.roll = -2.8722
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bone.connected = False
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bone = arm.edit_bones.new('finger.02')
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bone.head[:] = 0.8788, -0.4584, -0.1327
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bone.tail[:] = 1.7483, -0.9059, -0.3643
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bone.roll = -2.7099
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bone.connected = True
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bone.parent = arm.edit_bones['finger.01']
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bone = arm.edit_bones.new('finger.03')
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bone.head[:] = 1.7483, -0.9059, -0.3643
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bone.tail[:] = 2.2478, -1.1483, -0.7408
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bone.roll = -2.1709
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bone.connected = True
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bone.parent = arm.edit_bones['finger.02']
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bpy.ops.object.mode_set(mode='OBJECT')
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pbone = obj.pose.bones['finger.01']
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pbone['type'] = 'finger'
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def metarig_definition(obj, orig_bone_name):
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'''
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The bone given is the first in a chain
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Expects a chain of at least 2 children.
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eg.
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finger -> finger_01 -> finger_02
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'''
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bone_definition = []
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orig_bone = obj.data.bones[orig_bone_name]
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bone_definition.append(orig_bone.name)
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bone = orig_bone
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chain = 0
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while chain < 2: # first 2 bones only have 1 child
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children = bone.children
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if len(children) != 1:
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raise Exception("expected the chain to have 2 children without a fork")
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bone = children[0]
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bone_definition.append(bone.name) # finger_02, finger_03
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chain += 1
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if len(bone_definition) != len(METARIG_NAMES):
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raise Exception("internal problem, expected %d bones" % len(METARIG_NAMES))
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return bone_definition
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def main(obj, bone_definition, base_names):
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# *** EDITMODE
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# get assosiated data
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arm, orig_pbone, orig_ebone = get_bone_data(obj, bone_definition[0])
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obj.animation_data_create() # needed if its a new armature with no keys
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arm.layer[0] = arm.layer[8] = True
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children = orig_pbone.children_recursive
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tot_len = reduce(lambda f, pbone: f + pbone.bone.length, children, orig_pbone.bone.length)
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base_name = base_names[bone_definition[0]].rsplit(".", 1)[0]
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# first make a new bone at the location of the finger
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#control_ebone = arm.edit_bones.new(base_name)
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control_ebone = copy_bone_simple(arm, bone_definition[0], base_name)
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control_bone_name = control_ebone.name # we dont know if we get the name requested
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control_ebone.connected = orig_ebone.connected
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control_ebone.parent = orig_ebone.parent
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control_ebone.length = tot_len
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# now add bones inbetween this and its children recursively
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# switching modes so store names only!
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children = [pbone.name for pbone in children]
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# set an alternate layer for driver bones
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other_layer = empty_layer[:]
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other_layer[8] = True
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driver_bone_pairs = []
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for child_bone_name in children:
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arm, pbone_child, child_ebone = get_bone_data(obj, child_bone_name)
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# finger.02 --> finger_driver.02
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driver_bone_name = child_bone_name.split('.')
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driver_bone_name = driver_bone_name[0] + "_driver." + ".".join(driver_bone_name[1:])
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driver_ebone = copy_bone_simple(arm, child_ebone.name, driver_bone_name)
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driver_ebone.length *= 0.5
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driver_ebone.layer = other_layer
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# Insert driver_ebone in the chain without connected parents
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driver_ebone.connected = False
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driver_ebone.parent = child_ebone.parent
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child_ebone.connected = False
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child_ebone.parent = driver_ebone
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# Add the drivers to these when in posemode.
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driver_bone_pairs.append((child_bone_name, driver_bone_name))
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del control_ebone
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# *** POSEMODE
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bpy.ops.object.mode_set(mode='OBJECT')
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arm, orig_pbone, orig_bone = get_bone_data(obj, bone_definition[0])
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arm, control_pbone, control_bone= get_bone_data(obj, control_bone_name)
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# only allow Y scale
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control_pbone.lock_scale = (True, False, True)
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control_pbone["bend_ratio"] = 0.4
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prop = rna_idprop_ui_prop_get(control_pbone, "bend_ratio", create=True)
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prop["soft_min"] = 0.0
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prop["soft_max"] = 1.0
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con = orig_pbone.constraints.new('COPY_LOCATION')
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con.target = obj
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con.subtarget = control_bone_name
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con = orig_pbone.constraints.new('COPY_ROTATION')
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con.target = obj
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con.subtarget = control_bone_name
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# setup child drivers on each new smaller bone added. assume 2 for now.
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# drives the bones
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controller_path = control_pbone.path_to_id() # 'pose.bones["%s"]' % control_bone_name
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i = 0
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for child_bone_name, driver_bone_name in driver_bone_pairs:
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# XXX - todo, any number
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if i==2:
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break
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arm, driver_pbone, driver_bone = get_bone_data(obj, driver_bone_name)
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driver_pbone.rotation_mode = 'YZX'
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fcurve_driver = driver_pbone.driver_add("rotation_euler", 0)
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#obj.driver_add('pose.bones["%s"].scale', 1)
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#obj.animation_data.drivers[-1] # XXX, WATCH THIS
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driver = fcurve_driver.driver
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# scale target
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tar = driver.targets.new()
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tar.name = "scale"
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tar.id_type = 'OBJECT'
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tar.id = obj
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tar.rna_path = controller_path + '.scale[1]'
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# bend target
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tar = driver.targets.new()
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tar.name = "br"
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tar.id_type = 'OBJECT'
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tar.id = obj
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tar.rna_path = controller_path + '["bend_ratio"]'
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# XXX - todo, any number
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if i==0:
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driver.expression = '(-scale+1.0)*pi*2.0*(1.0-br)'
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elif i==1:
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driver.expression = '(-scale+1.0)*pi*2.0*br'
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arm, child_pbone, child_bone = get_bone_data(obj, child_bone_name)
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# only allow X rotation
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driver_pbone.lock_rotation = child_pbone.lock_rotation = (False, True, True)
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i += 1
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# no blending the result of this
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return None
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