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|
import bpy, re
from .arm import create_arm
from .leg import create_leg
from .paw import create_paw
from .ui import create_script
from .limb_utils import *
from mathutils import Vector
from ....utils import copy_bone, flip_bone, put_bone, create_cube_widget
from ....utils import strip_org, make_deformer_name, create_widget
from ....utils import create_circle_widget, create_sphere_widget
from ....utils import MetarigError, make_mechanism_name, org
from ....utils import create_limb_widget, connected_children_names
from rna_prop_ui import rna_idprop_ui_prop_get
from ..super_widgets import create_ikarrow_widget
from math import trunc
class Rig:
def __init__(self, obj, bone_name, params):
""" Initialize torso rig and key rig properties """
self.obj = obj
self.params = params
if params.limb_type != 'paw':
self.org_bones = list(
[bone_name] + connected_children_names(obj, bone_name)
)[:3] # The basic limb is the first 3 bones
else:
self.org_bones = list(
[bone_name] + connected_children_names(obj, bone_name)
)[:4] # The basic limb is the first 4 bones for a paw
self.segments = params.segments
self.bbones = params.bbones
self.limb_type = params.limb_type
self.rot_axis = params.rotation_axis
# Assign values to tweak/FK layers props if opted by user
if params.tweak_extra_layers:
self.tweak_layers = list(params.tweak_layers)
else:
self.tweak_layers = None
if params.fk_extra_layers:
self.fk_layers = list(params.fk_layers)
else:
self.fk_layers = None
def create_parent( self ):
org_bones = self.org_bones
bpy.ops.object.mode_set(mode ='EDIT')
eb = self.obj.data.edit_bones
name = get_bone_name( strip_org( org_bones[0] ), 'mch', 'parent' )
mch = copy_bone( self.obj, org_bones[0], name )
orient_bone( self, eb[mch], 'y' )
eb[ mch ].length = eb[ org_bones[0] ].length / 4
eb[ mch ].parent = eb[ org_bones[0] ].parent
eb[ mch ].roll = 0.0
# Constraints
make_constraint( self, mch, {
'constraint' : 'COPY_ROTATION',
'subtarget' : 'root'
})
make_constraint( self, mch, {
'constraint' : 'COPY_SCALE',
'subtarget' : 'root'
})
# Limb Follow Driver
pb = self.obj.pose.bones
name = 'FK_limb_follow'
pb[ mch ][ name ] = 0.0
prop = rna_idprop_ui_prop_get( pb[ mch ], name, create = True )
prop["min"] = 0.0
prop["max"] = 1.0
prop["soft_min"] = 0.0
prop["soft_max"] = 1.0
prop["description"] = name
drv = pb[ mch ].constraints[ 0 ].driver_add("influence").driver
drv.type = 'AVERAGE'
var = drv.variables.new()
var.name = name
var.type = "SINGLE_PROP"
var.targets[0].id = self.obj
var.targets[0].data_path = pb[ mch ].path_from_id() + \
'[' + '"' + name + '"' + ']'
return mch
def create_tweak( self ):
org_bones = self.org_bones
bpy.ops.object.mode_set(mode ='EDIT')
eb = self.obj.data.edit_bones
tweaks = {}
tweaks['ctrl'] = []
tweaks['mch' ] = []
# Create and parent mch and ctrl tweaks
for i,org in enumerate(org_bones):
if i < len(org_bones) - 1:
# Create segments if specified
for j in range( self.segments ):
# MCH
name = get_bone_name( strip_org(org), 'mch', 'tweak' )
mch = copy_bone( self.obj, org, name )
# CTRL
name = get_bone_name( strip_org(org), 'ctrl', 'tweak' )
ctrl = copy_bone( self.obj, org, name )
eb[ mch ].length /= self.segments
eb[ ctrl ].length /= self.segments
# If we have more than one segments, place the head of the
# 2nd and onwards at the correct position
if j > 0:
put_bone(self.obj, mch, eb[ tweaks['mch' ][-1] ].tail)
put_bone(self.obj, ctrl, eb[ tweaks['ctrl'][-1] ].tail)
tweaks['ctrl'] += [ ctrl ]
tweaks['mch' ] += [ mch ]
# Parenting the tweak ctrls to mchs
eb[ mch ].parent = eb[ org ]
eb[ ctrl ].parent = eb[ mch ]
else: # Last limb bone - is not subdivided
name = get_bone_name( strip_org(org), 'mch', 'tweak' )
mch = copy_bone( self.obj, org_bones[i-1], name )
eb[ mch ].length = eb[org].length / 4
put_bone(
self.obj,
mch,
eb[org_bones[i-1]].tail
)
ctrl = get_bone_name( strip_org(org), 'ctrl', 'tweak' )
ctrl = copy_bone( self.obj, org, ctrl )
eb[ ctrl ].length = eb[org].length / 2
tweaks['mch'] += [ mch ]
tweaks['ctrl'] += [ ctrl ]
# Parenting the tweak ctrls to mchs
eb[ mch ].parent = eb[ org ]
eb[ ctrl ].parent = eb[ mch ]
# Scale to reduce widget size and maintain conventions!
for mch, ctrl in zip( tweaks['mch'], tweaks['ctrl'] ):
eb[ mch ].length /= 4
eb[ ctrl ].length /= 2
# Contraints
if self.limb_type == 'paw':
for i,b in enumerate( tweaks['mch'] ):
first = 0
middle = trunc( len( tweaks['mch'] ) / 3 )
middle1 = middle + self.segments
last = len( tweaks['mch'] ) - 1
if i == first or i == middle or i == middle1:
make_constraint( self, b, {
'constraint' : 'COPY_SCALE',
'subtarget' : 'root'
})
elif i != last:
targets = []
factor = 0
if i < middle:
dt_target_idx = middle
targets = [first,middle]
elif i > middle and i < middle1:
targets = [middle,middle1]
factor = self.segments
dt_target_idx = middle1
else:
targets = [middle1,last]
factor = self.segments * 2
dt_target_idx = last
# Use copy transforms constraints to position each bone
# exactly in the location respective to its index (between
# the two edges)
make_constraint( self, b, {
'constraint' : 'COPY_TRANSFORMS',
'subtarget' : tweaks['ctrl'][targets[0]],
})
make_constraint( self, b, {
'constraint' : 'COPY_TRANSFORMS',
'subtarget' : tweaks['ctrl'][targets[1]],
'influence' : (i - factor) / self.segments
})
make_constraint( self, b, {
'constraint' : 'DAMPED_TRACK',
'subtarget' : tweaks['ctrl'][ dt_target_idx ],
})
else:
for i,b in enumerate( tweaks['mch'] ):
first = 0
middle = trunc( len( tweaks['mch'] ) / 2 )
last = len( tweaks['mch'] ) - 1
if i == first or i == middle:
make_constraint( self, b, {
'constraint' : 'COPY_SCALE',
'subtarget' : 'root'
})
elif i != last:
targets = []
dt_target_idx = middle
factor = 0
if i < middle:
targets = [first,middle]
else:
targets = [middle,last]
factor = self.segments
dt_target_idx = last
# Use copy transforms constraints to position each bone
# exactly in the location respective to its index (between
# the two edges)
make_constraint( self, b, {
'constraint' : 'COPY_TRANSFORMS',
'subtarget' : tweaks['ctrl'][targets[0]],
})
make_constraint( self, b, {
'constraint' : 'COPY_TRANSFORMS',
'subtarget' : tweaks['ctrl'][targets[1]],
'influence' : (i - factor) / self.segments
})
make_constraint( self, b, {
'constraint' : 'DAMPED_TRACK',
'subtarget' : tweaks['ctrl'][ dt_target_idx ],
})
# Ctrl bones Locks and Widgets
pb = self.obj.pose.bones
for t in tweaks['ctrl']:
pb[t].lock_rotation = True, False, True
pb[t].lock_scale = False, True, False
create_sphere_widget(self.obj, t, bone_transform_name=None)
if self.tweak_layers:
pb[t].bone.layers = self.tweak_layers
return tweaks
def create_def( self, tweaks ):
org_bones = self.org_bones
bpy.ops.object.mode_set(mode ='EDIT')
eb = self.obj.data.edit_bones
def_bones = []
for i,org in enumerate(org_bones):
if i < len(org_bones) - 1:
# Create segments if specified
for j in range( self.segments ):
name = get_bone_name( strip_org(org), 'def' )
def_name = copy_bone( self.obj, org, name )
eb[ def_name ].length /= self.segments
# If we have more than one segments, place the 2nd and
# onwards on the tail of the previous bone
if j > 0:
put_bone(self.obj, def_name, eb[ def_bones[-1] ].tail)
def_bones += [ def_name ]
else:
name = get_bone_name( strip_org(org), 'def' )
def_name = copy_bone( self.obj, org, name )
def_bones.append( def_name )
# Parent deform bones
for i,b in enumerate( def_bones ):
if i > 0: # For all bones but the first (which has no parent)
eb[b].parent = eb[ def_bones[i-1] ] # to previous
eb[b].use_connect = True
# Constraint def to tweaks
for d,t in zip(def_bones, tweaks):
tidx = tweaks.index(t)
make_constraint( self, d, {
'constraint' : 'COPY_TRANSFORMS',
'subtarget' : t
})
if tidx != len(tweaks) - 1:
make_constraint( self, d, {
'constraint' : 'DAMPED_TRACK',
'subtarget' : tweaks[ tidx + 1 ],
})
make_constraint( self, d, {
'constraint' : 'STRETCH_TO',
'subtarget' : tweaks[ tidx + 1 ],
})
# Create bbone segments
for bone in def_bones[:-1]:
self.obj.data.bones[bone].bbone_segments = self.bbones
self.obj.data.bones[ def_bones[0] ].bbone_in = 0.0
self.obj.data.bones[ def_bones[-2] ].bbone_out = 0.0
self.obj.data.bones[ def_bones[-1] ].bbone_in = 0.0
self.obj.data.bones[ def_bones[-1] ].bbone_out = 0.0
# Rubber hose drivers
pb = self.obj.pose.bones
for i,t in enumerate( tweaks[1:-1] ):
# Create custom property on tweak bone to control rubber hose
name = 'rubber_tweak'
if i == trunc( len( tweaks[1:-1] ) / 2 ):
pb[t][name] = 0.0
else:
pb[t][name] = 1.0
prop = rna_idprop_ui_prop_get( pb[t], name, create=True )
prop["min"] = 0.0
prop["max"] = 2.0
prop["soft_min"] = 0.0
prop["soft_max"] = 1.0
prop["description"] = name
for j,d in enumerate(def_bones[:-1]):
drvs = {}
if j != 0:
tidx = j
drvs[tidx] = self.obj.data.bones[d].driver_add("bbone_in").driver
if j != len( def_bones[:-1] ) - 1:
tidx = j + 1
drvs[tidx] = self.obj.data.bones[d].driver_add("bbone_out").driver
for d in drvs:
drv = drvs[d]
name = 'rubber_tweak'
drv.type = 'AVERAGE'
var = drv.variables.new()
var.name = name
var.type = "SINGLE_PROP"
var.targets[0].id = self.obj
var.targets[0].data_path = pb[tweaks[d]].path_from_id() + \
'[' + '"' + name + '"' + ']'
return def_bones
def create_ik( self, parent ):
org_bones = self.org_bones
bpy.ops.object.mode_set(mode ='EDIT')
eb = self.obj.data.edit_bones
ctrl = get_bone_name( org_bones[0], 'ctrl', 'ik' )
mch_ik = get_bone_name( org_bones[0], 'mch', 'ik' )
mch_target = get_bone_name( org_bones[0], 'mch', 'ik_target' )
for o, ik in zip( org_bones, [ ctrl, mch_ik, mch_target ] ):
bone = copy_bone( self.obj, o, ik )
if org_bones.index(o) == len( org_bones ) - 1:
eb[ bone ].length /= 4
# Create MCH Stretch
mch_str = copy_bone(
self.obj,
org_bones[0],
get_bone_name( org_bones[0], 'mch', 'ik_stretch' )
)
if self.limb_type != 'paw':
eb[ mch_str ].tail = eb[ org_bones[-1] ].head
else:
eb[ mch_str ].tail = eb[ org_bones[-2] ].head
# Parenting
eb[ ctrl ].parent = eb[ parent ]
eb[ mch_str ].parent = eb[ parent ]
eb[ mch_ik ].parent = eb[ ctrl ]
make_constraint( self, mch_ik, {
'constraint' : 'IK',
'subtarget' : mch_target,
'chain_count' : 2,
})
pb = self.obj.pose.bones
pb[ mch_ik ].ik_stretch = 0.1
pb[ ctrl ].ik_stretch = 0.1
# IK constraint Rotation locks
for axis in ['x','y','z']:
if axis != self.rot_axis:
setattr( pb[ mch_ik ], 'lock_ik_' + axis, True )
# Locks and Widget
pb[ ctrl ].lock_rotation = True, False, True
create_ikarrow_widget( self.obj, ctrl, bone_transform_name=None )
return { 'ctrl' : { 'limb' : ctrl },
'mch_ik' : mch_ik,
'mch_target' : mch_target,
'mch_str' : mch_str
}
def create_fk( self, parent ):
org_bones = self.org_bones.copy()
if self.limb_type == 'paw': # Paw base chain is one bone longer
org_bones.pop()
bpy.ops.object.mode_set(mode ='EDIT')
eb = self.obj.data.edit_bones
ctrls = []
for o in org_bones:
bone = copy_bone( self.obj, o, get_bone_name( o, 'ctrl', 'fk' ) )
ctrls.append( bone )
# MCH
mch = copy_bone(
self.obj, org_bones[-1], get_bone_name( o, 'mch', 'fk' )
)
eb[ mch ].length /= 4
# Parenting
eb[ ctrls[0] ].parent = eb[ parent ]
eb[ ctrls[1] ].parent = eb[ ctrls[0] ]
eb[ ctrls[1] ].use_connect = True
eb[ ctrls[2] ].parent = eb[ mch ]
eb[ mch ].parent = eb[ ctrls[1] ]
eb[ mch ].use_connect = True
# Constrain MCH's scale to root
make_constraint( self, mch, {
'constraint' : 'COPY_SCALE',
'subtarget' : 'root'
})
# Locks and widgets
pb = self.obj.pose.bones
pb[ ctrls[2] ].lock_location = True, True, True
create_limb_widget( self.obj, ctrls[0] )
create_limb_widget( self.obj, ctrls[1] )
create_circle_widget(self.obj, ctrls[2], radius=0.4, head_tail=0.0)
for c in ctrls:
if self.fk_layers:
pb[c].bone.layers = self.fk_layers
return { 'ctrl' : ctrls, 'mch' : mch }
def org_parenting_and_switch( self, org, ik, fk, parent ):
bpy.ops.object.mode_set(mode ='EDIT')
eb = self.obj.data.edit_bones
# re-parent ORGs in a connected chain
for i,o in enumerate(org):
if i > 0:
eb[o].parent = eb[ org[i-1] ]
if i <= len(org)-1:
eb[o].use_connect = True
bpy.ops.object.mode_set(mode ='OBJECT')
pb = self.obj.pose.bones
pb_parent = pb[ parent ]
# Create ik/fk switch property
pb_parent['IK/FK'] = 0.0
prop = rna_idprop_ui_prop_get( pb_parent, 'IK/FK', create=True )
prop["min"] = 0.0
prop["max"] = 1.0
prop["soft_min"] = 0.0
prop["soft_max"] = 1.0
prop["description"] = 'IK/FK Switch'
# Constrain org to IK and FK bones
iks = [ ik['ctrl']['limb'] ]
iks += [ ik[k] for k in [ 'mch_ik', 'mch_target'] ]
for o, i, f in zip( org, iks, fk ):
make_constraint( self, o, {
'constraint' : 'COPY_TRANSFORMS',
'subtarget' : i
})
make_constraint( self, o, {
'constraint' : 'COPY_TRANSFORMS',
'subtarget' : f
})
# Add driver to relevant constraint
drv = pb[o].constraints[-1].driver_add("influence").driver
drv.type = 'AVERAGE'
var = drv.variables.new()
var.name = prop.name
var.type = "SINGLE_PROP"
var.targets[0].id = self.obj
var.targets[0].data_path = \
pb_parent.path_from_id() + '['+ '"' + prop.name + '"' + ']'
def create_terminal( self, limb_type, bones ):
if limb_type == 'arm':
return create_arm( self, bones )
elif limb_type == 'leg':
return create_leg( self, bones )
elif limb_type == 'paw':
return create_paw( self, bones )
def generate( self ):
bpy.ops.object.mode_set(mode ='EDIT')
eb = self.obj.data.edit_bones
# Clear parents for org bones
for bone in self.org_bones[1:]:
eb[bone].use_connect = False
eb[bone].parent = None
bones = {}
# Create mch limb parent
bones['parent'] = self.create_parent()
bones['tweak'] = self.create_tweak()
bones['def'] = self.create_def( bones['tweak']['ctrl'] )
bones['ik'] = self.create_ik( bones['parent'] )
bones['fk'] = self.create_fk( bones['parent'] )
self.org_parenting_and_switch(
self.org_bones, bones['ik'], bones['fk']['ctrl'], bones['parent']
)
bones = self.create_terminal( self.limb_type, bones )
return [ create_script( bones, self.limb_type ) ]
def add_parameters( params ):
""" Add the parameters of this rig type to the
RigifyParameters PropertyGroup
"""
items = [
('arm', 'Arm', ''),
('leg', 'Leg', ''),
('paw', 'Paw', '')
]
params.limb_type = bpy.props.EnumProperty(
items = items,
name = "Limb Type",
default = 'arm'
)
items = [
('x', 'X', ''),
('y', 'Y', ''),
('z', 'Z', '')
]
params.rotation_axis = bpy.props.EnumProperty(
items = items,
name = "Rotation Axis",
default = 'x'
)
params.segments = bpy.props.IntProperty(
name = 'limb segments',
default = 2,
min = 1,
description = 'Number of segments'
)
params.bbones = bpy.props.IntProperty(
name = 'bbone segments',
default = 10,
min = 1,
description = 'Number of segments'
)
# Setting up extra layers for the FK and tweak
params.tweak_extra_layers = bpy.props.BoolProperty(
name = "tweak_extra_layers",
default = True,
description = ""
)
params.tweak_layers = bpy.props.BoolVectorProperty(
size = 32,
description = "Layers for the tweak controls to be on",
default = tuple( [ i == 1 for i in range(0, 32) ] )
)
# Setting up extra layers for the FK and tweak
params.fk_extra_layers = bpy.props.BoolProperty(
name = "fk_extra_layers",
default = True,
description = ""
)
params.fk_layers = bpy.props.BoolVectorProperty(
size = 32,
description = "Layers for the FK controls to be on",
default = tuple( [ i == 1 for i in range(0, 32) ] )
)
def parameters_ui(layout, params):
""" Create the ui for the rig parameters."""
r = layout.row()
r.prop(params, "limb_type")
r = layout.row()
r.prop(params, "rotation_axis")
r = layout.row()
r.prop(params, "segments")
r = layout.row()
r.prop(params, "bbones")
for layer in [ 'fk', 'tweak' ]:
r = layout.row()
r.prop(params, layer + "_extra_layers")
r.active = params.tweak_extra_layers
col = r.column(align=True)
row = col.row(align=True)
for i in range(8):
row.prop(params, layer + "_layers", index=i, toggle=True, text="")
row = col.row(align=True)
for i in range(16,24):
row.prop(params, layer + "_layers", index=i, toggle=True, text="")
col = r.column(align=True)
row = col.row(align=True)
for i in range(8,16):
row.prop(params, layer + "_layers", index=i, toggle=True, text="")
row = col.row(align=True)
for i in range(24,32):
row.prop(params, layer + "_layers", index=i, toggle=True, text="")
def create_sample(obj):
# generated by rigify.utils.write_metarig
bpy.ops.object.mode_set(mode='EDIT')
arm = obj.data
bones = {}
bone = arm.edit_bones.new('upper_arm.L')
bone.head[:] = -0.0016, 0.0060, -0.0012
bone.tail[:] = 0.2455, 0.0678, -0.1367
bone.roll = 2.0724
bone.use_connect = False
bones['upper_arm.L'] = bone.name
bone = arm.edit_bones.new('forearm.L')
bone.head[:] = 0.2455, 0.0678, -0.1367
bone.tail[:] = 0.4625, 0.0285, -0.2797
bone.roll = 2.1535
bone.use_connect = True
bone.parent = arm.edit_bones[bones['upper_arm.L']]
bones['forearm.L'] = bone.name
bone = arm.edit_bones.new('hand.L')
bone.head[:] = 0.4625, 0.0285, -0.2797
bone.tail[:] = 0.5265, 0.0205, -0.3273
bone.roll = 2.2103
bone.use_connect = True
bone.parent = arm.edit_bones[bones['forearm.L']]
bones['hand.L'] = bone.name
bpy.ops.object.mode_set(mode='OBJECT')
pbone = obj.pose.bones[bones['upper_arm.L']]
pbone.rigify_type = 'pitchipoy.limbs.super_limb'
pbone.lock_location = (False, False, False)
pbone.lock_rotation = (False, False, False)
pbone.lock_rotation_w = False
pbone.lock_scale = (False, False, False)
pbone.rotation_mode = 'QUATERNION'
try:
pbone.rigify_parameters.separate_ik_layers = True
except AttributeError:
pass
try:
pbone.rigify_parameters.ik_layers = [
False, False, False, False, False, False, False, False, True, False,
False, False, False, False, False, False, False, False, False, False,
False, False, False, False, False, False, False, False, False, False,
False, False
]
except AttributeError:
pass
try:
pbone.rigify_parameters.separate_hose_layers = True
except AttributeError:
pass
try:
pbone.rigify_parameters.hose_layers = [
False, False, False, False, False, False, False, False, False, True,
False, False, False, False, False, False, False, False, False, False,
False, False, False, False, False, False, False, False, False, False,
False, False
]
except AttributeError:
pass
try:
pbone.rigify_parameters.tweak_layers = [
False, False, False, False, False, False, False, False, False, True,
False, False, False, False, False, False, False, False, False, False,
False, False, False, False, False, False, False, False, False, False,
False, False
]
except AttributeError:
pass
try:
pbone.rigify_parameters.fk_layers = [
False, False, False, False, False, False, False, False, True, False,
False, False, False, False, False, False, False, False, False, False,
False, False, False, False, False, False, False, False, False, False,
False, False
]
except AttributeError:
pass
pbone = obj.pose.bones[bones['forearm.L']]
pbone.rigify_type = ''
pbone.lock_location = (False, False, False)
pbone.lock_rotation = (False, False, False)
pbone.lock_rotation_w = False
pbone.lock_scale = (False, False, False)
pbone.rotation_mode = 'QUATERNION'
pbone = obj.pose.bones[bones['hand.L']]
pbone.rigify_type = ''
pbone.lock_location = (False, False, False)
pbone.lock_rotation = (False, False, False)
pbone.lock_rotation_w = False
pbone.lock_scale = (False, False, False)
pbone.rotation_mode = 'QUATERNION'
bpy.ops.object.mode_set(mode='EDIT')
for bone in arm.edit_bones:
bone.select = False
bone.select_head = False
bone.select_tail = False
for b in bones:
bone = arm.edit_bones[bones[b]]
bone.select = True
bone.select_head = True
bone.select_tail = True
arm.edit_bones.active = bone
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