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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
#======================= END GPL LICENSE BLOCK ========================
# <pep8 compliant>
import bpy, math
from ....utils import MetarigError, connected_children_names
from ....utils import create_widget, copy_bone, create_circle_widget
from ....utils import strip_org, flip_bone, put_bone
from rna_prop_ui import rna_idprop_ui_prop_get
from ..super_widgets import create_foot_widget, create_ballsocket_widget
from .limb_utils import *
def create_leg( cls, bones ):
org_bones = list(
[cls.org_bones[0]] + connected_children_names(cls.obj, cls.org_bones[0])
)
bones['ik']['ctrl']['terminal'] = []
bpy.ops.object.mode_set(mode='EDIT')
eb = cls.obj.data.edit_bones
# Create toes def bone
toes_def = get_bone_name( org_bones[-1], 'def' )
toes_def = copy_bone( cls.obj, org_bones[-1], toes_def )
eb[ toes_def ].use_connect = False
eb[ toes_def ].parent = eb[ bones['def'][-1] ]
eb[ toes_def ].use_connect = True
bones['def'] += [ toes_def ]
# Create IK leg control
ctrl = get_bone_name( org_bones[2], 'ctrl', 'ik' )
ctrl = copy_bone( cls.obj, org_bones[2], ctrl )
# clear parent (so that rigify will parent to root)
eb[ ctrl ].parent = None
eb[ ctrl ].use_connect = False
# Create heel ctrl bone
heel = get_bone_name( org_bones[2], 'ctrl', 'heel_ik' )
heel = copy_bone( cls.obj, org_bones[2], heel )
orient_bone( cls, eb[ heel ], 'y', 0.5 )
eb[ heel ].length = eb[ org_bones[2] ].length / 2
# Reset control position and orientation
l = eb[ ctrl ].length
orient_bone( cls, eb[ ctrl ], 'y', reverse = True )
eb[ ctrl ].length = l
# Parent
eb[ heel ].use_connect = False
eb[ heel ].parent = eb[ ctrl ]
eb[ bones['ik']['mch_target'] ].parent = eb[ heel ]
eb[ bones['ik']['mch_target'] ].use_connect = False
# Create foot mch rock and roll bones
# Get the tmp heel (floating unconnected without children)
tmp_heel = ""
for b in cls.obj.data.bones[ org_bones[2] ].children:
if not b.use_connect and not b.children:
tmp_heel = b.name
# roll1 MCH bone
roll1_mch = get_bone_name( tmp_heel, 'mch', 'roll' )
roll1_mch = copy_bone( cls.obj, org_bones[2], roll1_mch )
# clear parent
eb[ roll1_mch ].use_connect = False
eb[ roll1_mch ].parent = None
flip_bone( cls.obj, roll1_mch )
# Create 2nd roll mch, and two rock mch bones
roll2_mch = get_bone_name( tmp_heel, 'mch', 'roll' )
roll2_mch = copy_bone( cls.obj, org_bones[3], roll2_mch )
eb[ roll2_mch ].use_connect = False
eb[ roll2_mch ].parent = None
put_bone(
cls.obj,
roll2_mch,
( eb[ tmp_heel ].head + eb[ tmp_heel ].tail ) / 2
)
eb[ roll2_mch ].length /= 4
# Rock MCH bones
rock1_mch = get_bone_name( tmp_heel, 'mch', 'rock' )
rock1_mch = copy_bone( cls.obj, tmp_heel, rock1_mch )
eb[ rock1_mch ].use_connect = False
eb[ rock1_mch ].parent = None
orient_bone( cls, eb[ rock1_mch ], 'y', 1.0, reverse = True )
eb[ rock1_mch ].length = eb[ tmp_heel ].length / 2
rock2_mch = get_bone_name( tmp_heel, 'mch', 'rock' )
rock2_mch = copy_bone( cls.obj, tmp_heel, rock2_mch )
eb[ rock2_mch ].use_connect = False
eb[ rock2_mch ].parent = None
orient_bone( cls, eb[ rock2_mch ], 'y', 1.0 )
eb[ rock2_mch ].length = eb[ tmp_heel ].length / 2
# Parent rock and roll MCH bones
eb[ roll1_mch ].parent = eb[ roll2_mch ]
eb[ roll2_mch ].parent = eb[ rock1_mch ]
eb[ rock1_mch ].parent = eb[ rock2_mch ]
eb[ rock2_mch ].parent = eb[ ctrl ]
# Constrain rock and roll MCH bones
make_constraint( cls, roll1_mch, {
'constraint' : 'COPY_ROTATION',
'subtarget' : heel,
'owner_space' : 'LOCAL',
'target_space' : 'LOCAL'
})
make_constraint( cls, roll1_mch, {
'constraint' : 'LIMIT_ROTATION',
'use_limit_x' : True,
'max_x' : math.radians(360),
'owner_space' : 'LOCAL'
})
make_constraint( cls, roll2_mch, {
'constraint' : 'COPY_ROTATION',
'subtarget' : heel,
'use_y' : False,
'use_z' : False,
'invert_x' : True,
'owner_space' : 'LOCAL',
'target_space' : 'LOCAL'
})
make_constraint( cls, roll2_mch, {
'constraint' : 'LIMIT_ROTATION',
'use_limit_x' : True,
'max_x' : math.radians(360),
'owner_space' : 'LOCAL'
})
pb = cls.obj.pose.bones
for i,b in enumerate([ rock1_mch, rock2_mch ]):
head_tail = pb[b].head - pb[tmp_heel].head
if '.L' in b:
if not i:
min_y = 0
max_y = math.radians(360)
else:
min_y = math.radians(-360)
max_y = 0
else:
if not i:
min_y = math.radians(-360)
max_y = 0
else:
min_y = 0
max_y = math.radians(360)
make_constraint( cls, b, {
'constraint' : 'COPY_ROTATION',
'subtarget' : heel,
'use_x' : False,
'use_z' : False,
'owner_space' : 'LOCAL',
'target_space' : 'LOCAL'
})
make_constraint( cls, b, {
'constraint' : 'LIMIT_ROTATION',
'use_limit_y' : True,
'min_y' : min_y,
'max_y' : max_y,
'owner_space' : 'LOCAL'
})
# Constrain 4th ORG to roll2 MCH bone
make_constraint( cls, org_bones[3], {
'constraint' : 'COPY_TRANSFORMS',
'subtarget' : roll2_mch
})
# Set up constraints
# Constrain mch target bone to the ik control and mch stretch
make_constraint( cls, bones['ik']['mch_target'], {
'constraint' : 'COPY_LOCATION',
'subtarget' : bones['ik']['mch_str'],
'head_tail' : 1.0
})
# Constrain mch ik stretch bone to the ik control
make_constraint( cls, bones['ik']['mch_str'], {
'constraint' : 'DAMPED_TRACK',
'subtarget' : roll1_mch,
'head_tail' : 1.0
})
make_constraint( cls, bones['ik']['mch_str'], {
'constraint' : 'STRETCH_TO',
'subtarget' : roll1_mch,
'head_tail' : 1.0
})
make_constraint( cls, bones['ik']['mch_str'], {
'constraint' : 'LIMIT_SCALE',
'use_min_y' : True,
'use_max_y' : True,
'max_y' : 1.05,
'owner_space' : 'LOCAL'
})
# Modify rotation mode for ik and tweak controls
pb[bones['ik']['ctrl']['limb']].rotation_mode = 'ZXY'
for b in bones['tweak']['ctrl']:
pb[b].rotation_mode = 'ZXY'
# Create ik/fk switch property
pb_parent = pb[ bones['parent'] ]
pb_parent['IK_Strertch'] = 1.0
prop = rna_idprop_ui_prop_get( pb_parent, 'IK_Strertch', create=True )
prop["min"] = 0.0
prop["max"] = 1.0
prop["soft_min"] = 0.0
prop["soft_max"] = 1.0
prop["description"] = 'IK Stretch'
# Add driver to limit scale constraint influence
b = bones['ik']['mch_str']
drv = pb[b].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 = cls.obj
var.targets[0].data_path = \
pb_parent.path_from_id() + '['+ '"' + prop.name + '"' + ']'
drv_modifier = cls.obj.animation_data.drivers[-1].modifiers[0]
drv_modifier.mode = 'POLYNOMIAL'
drv_modifier.poly_order = 1
drv_modifier.coefficients[0] = 1.0
drv_modifier.coefficients[1] = -1.0
# Create leg widget
create_foot_widget(cls.obj, ctrl, bone_transform_name=None)
# Create heel ctrl locks
pb[ heel ].lock_location = True, True, True
pb[ heel ].lock_rotation = False, False, True
pb[ heel ].lock_scale = True, True, True
# Add ballsocket widget to heel
create_ballsocket_widget(cls.obj, heel, bone_transform_name=None)
bpy.ops.object.mode_set(mode='EDIT')
eb = cls.obj.data.edit_bones
if len( org_bones ) >= 4:
# Create toes control bone
toes = get_bone_name( org_bones[3], 'ctrl' )
toes = copy_bone( cls.obj, org_bones[3], toes )
eb[ toes ].use_connect = False
eb[ toes ].parent = eb[ org_bones[3] ]
# Constrain toes def bones
make_constraint( cls, bones['def'][-2], {
'constraint' : 'DAMPED_TRACK',
'subtarget' : toes
})
make_constraint( cls, bones['def'][-2], {
'constraint' : 'STRETCH_TO',
'subtarget' : toes
})
make_constraint( cls, bones['def'][-1], {
'constraint' : 'COPY_TRANSFORMS',
'subtarget' : toes
})
# Find IK/FK switch property
pb = cls.obj.pose.bones
prop = rna_idprop_ui_prop_get( pb[ bones['parent'] ], 'IK/FK' )
# Add driver to limit scale constraint influence
b = org_bones[3]
drv = pb[b].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 = cls.obj
var.targets[0].data_path = \
pb_parent.path_from_id() + '['+ '"' + prop.name + '"' + ']'
drv_modifier = cls.obj.animation_data.drivers[-1].modifiers[0]
drv_modifier.mode = 'POLYNOMIAL'
drv_modifier.poly_order = 1
drv_modifier.coefficients[0] = 1.0
drv_modifier.coefficients[1] = -1.0
# Create toe circle widget
create_circle_widget(cls.obj, toes, radius=0.4, head_tail=0.5)
bones['ik']['ctrl']['terminal'] += [ toes ]
bones['ik']['ctrl']['terminal'] += [ heel, ctrl ]
return bones
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