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# ##### 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# ##### END GPL LICENSE BLOCK #####
# <pep8 compliant>
import bpy
from rigify import RigifyError
from rigify_utils import copy_bone_simple, get_side_name, get_base_name, EMPTY_LAYER
from rna_prop_ui import rna_idprop_ui_prop_get
from functools import reduce
METARIG_NAMES = "finger_01", "finger_02", "finger_03"
def metarig_template():
bpy.ops.object.mode_set(mode='EDIT')
obj = bpy.context.active_object
arm = obj.data
bone = arm.edit_bones.new('finger.01')
bone.head[:] = 0.0000, 0.0000, 0.0000
bone.tail[:] = 0.8788, -0.4584, -0.1327
bone.roll = -2.8722
bone.connected = False
bone = arm.edit_bones.new('finger.02')
bone.head[:] = 0.8788, -0.4584, -0.1327
bone.tail[:] = 1.7483, -0.9059, -0.3643
bone.roll = -2.7099
bone.connected = True
bone.parent = arm.edit_bones['finger.01']
bone = arm.edit_bones.new('finger.03')
bone.head[:] = 1.7483, -0.9059, -0.3643
bone.tail[:] = 2.2478, -1.1483, -0.7408
bone.roll = -2.1709
bone.connected = True
bone.parent = arm.edit_bones['finger.02']
bpy.ops.object.mode_set(mode='OBJECT')
pbone = obj.pose.bones['finger.01']
pbone['type'] = 'finger_curl'
def metarig_definition(obj, orig_bone_name):
'''
The bone given is the first in a chain
Expects a chain of at least 2 children.
eg.
finger -> finger_01 -> finger_02
'''
bone_definition = []
orig_bone = obj.data.bones[orig_bone_name]
bone_definition.append(orig_bone.name)
bone = orig_bone
chain = 0
while chain < 2: # first 2 bones only have 1 child
children = bone.children
if len(children) != 1:
raise RigifyError("expected the chain to have 2 children from bone '%s' without a fork" % orig_bone_name)
bone = children[0]
bone_definition.append(bone.name) # finger_02, finger_03
chain += 1
if len(bone_definition) != len(METARIG_NAMES):
raise RigifyError("internal problem, expected %d bones" % len(METARIG_NAMES))
return bone_definition
def main(obj, bone_definition, base_names):
# *** EDITMODE
# get assosiated data
arm = obj.data
orig_pbone = obj.pose.bones[bone_definition[0]]
orig_ebone = arm.edit_bones[bone_definition[0]]
obj.animation_data_create() # needed if its a new armature with no keys
arm.layer[0] = arm.layer[8] = True
children = orig_pbone.children_recursive
tot_len = reduce(lambda f, pbone: f + pbone.bone.length, children, orig_pbone.bone.length)
# FIXME, the line below is far too arbitrary
base_name = base_names[bone_definition[0]].rsplit(".", 2)[0]
# first make a new bone at the location of the finger
#control_ebone = arm.edit_bones.new(base_name)
control_ebone = copy_bone_simple(arm, bone_definition[0], base_name + get_side_name(base_names[bone_definition[0]]), parent=True)
control_bone_name = control_ebone.name # we dont know if we get the name requested
control_ebone.connected = orig_ebone.connected
control_ebone.parent = orig_ebone.parent
control_ebone.length = tot_len
# now add bones inbetween this and its children recursively
# switching modes so store names only!
children = [pbone.name for pbone in children]
# set an alternate layer for driver bones
other_layer = EMPTY_LAYER[:]
other_layer[8] = True
driver_bone_pairs = []
for child_bone_name in children:
child_ebone = arm.edit_bones[child_bone_name]
# finger.02 --> finger_driver.02
driver_bone_name = child_bone_name.split('.')
driver_bone_name = driver_bone_name[0] + "_driver." + ".".join(driver_bone_name[1:])
driver_ebone = copy_bone_simple(arm, child_ebone.name, driver_bone_name)
driver_ebone.length *= 0.5
driver_ebone.layer = other_layer
# Insert driver_ebone in the chain without connected parents
driver_ebone.connected = False
driver_ebone.parent = child_ebone.parent
child_ebone.connected = False
child_ebone.parent = driver_ebone
# Add the drivers to these when in posemode.
driver_bone_pairs.append((child_bone_name, driver_bone_name))
del control_ebone
# *** POSEMODE
bpy.ops.object.mode_set(mode='OBJECT')
orig_pbone = obj.pose.bones[bone_definition[0]]
control_pbone = obj.pose.bones[control_bone_name]
# only allow Y scale
control_pbone.lock_scale = (True, False, True)
control_pbone["bend_ratio"] = 0.4
prop = rna_idprop_ui_prop_get(control_pbone, "bend_ratio", create=True)
prop["soft_min"] = 0.0
prop["soft_max"] = 1.0
con = orig_pbone.constraints.new('COPY_LOCATION')
con.target = obj
con.subtarget = control_bone_name
con = orig_pbone.constraints.new('COPY_ROTATION')
con.target = obj
con.subtarget = control_bone_name
# setup child drivers on each new smaller bone added. assume 2 for now.
# drives the bones
controller_path = control_pbone.path_to_id() # 'pose.bones["%s"]' % control_bone_name
i = 0
for child_bone_name, driver_bone_name in driver_bone_pairs:
# XXX - todo, any number
if i == 2:
break
driver_pbone = obj.pose.bones[driver_bone_name]
driver_pbone.rotation_mode = 'YZX'
fcurve_driver = driver_pbone.driver_add("rotation_euler", 0)
#obj.driver_add('pose.bones["%s"].scale', 1)
#obj.animation_data.drivers[-1] # XXX, WATCH THIS
driver = fcurve_driver.driver
# scale target
tar = driver.targets.new()
tar.name = "scale"
tar.id_type = 'OBJECT'
tar.id = obj
tar.rna_path = controller_path + '.scale[1]'
# bend target
tar = driver.targets.new()
tar.name = "br"
tar.id_type = 'OBJECT'
tar.id = obj
tar.rna_path = controller_path + '["bend_ratio"]'
# XXX - todo, any number
if i == 0:
driver.expression = '(-scale+1.0)*pi*2.0*(1.0-br)'
elif i == 1:
driver.expression = '(-scale+1.0)*pi*2.0*br'
child_pbone = obj.pose.bones[child_bone_name]
# only allow X rotation
driver_pbone.lock_rotation = child_pbone.lock_rotation = (False, True, True)
i += 1
# no blending the result of this
return None
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