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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
from mathutils import Vector
from rigify.utils import MetarigError
from rigify.utils import copy_bone
from rigify.utils import connected_children_names
from rigify.utils import strip_org, make_mechanism_name, make_deformer_name
from rigify.utils import create_widget, create_limb_widget
from rna_prop_ui import rna_idprop_ui_prop_get
import re
class Rig:
""" A finger rig. It takes a single chain of bones.
This is a control and deformation rig.
"""
def __init__(self, obj, bone, params):
""" Gather and validate data about the rig.
"""
self.obj = obj
self.org_bones = [bone] + connected_children_names(obj, bone)
self.params = params
if len(self.org_bones) <= 1:
raise MetarigError("RIGIFY ERROR: Bone '%s': input to rig type must be a chain of 2 or more bones" % (strip_org(bone)))
# Get user-specified layers, if they exist
if params.separate_extra_layers:
self.ex_layers = list(params.extra_layers)
else:
self.ex_layers = None
# Get other rig parameters
self.primary_rotation_axis = params.primary_rotation_axis
self.use_digit_twist = params.use_digit_twist
def deform(self):
""" Generate the deformation rig.
Just a copy of the original bones, except the first digit which is a twist bone.
"""
bpy.ops.object.mode_set(mode='EDIT')
# Create the bones
# First bone is a twist bone
if self.use_digit_twist:
b1a = copy_bone(self.obj, self.org_bones[0], make_deformer_name(strip_org(self.org_bones[0] + ".01")))
b1b = copy_bone(self.obj, self.org_bones[0], make_deformer_name(strip_org(self.org_bones[0] + ".02")))
b1tip = copy_bone(self.obj, self.org_bones[0], make_mechanism_name(strip_org(self.org_bones[0] + ".tip")))
else:
b1 = copy_bone(self.obj, self.org_bones[0], make_deformer_name(strip_org(self.org_bones[0])))
# The rest are normal
bones = []
for bone in self.org_bones[1:]:
bones += [copy_bone(self.obj, bone, make_deformer_name(strip_org(bone)))]
# Position bones
eb = self.obj.data.edit_bones
if self.use_digit_twist:
b1a_e = eb[b1a]
b1b_e = eb[b1b]
b1tip_e = eb[b1tip]
b1tip_e.use_connect = False
b1tip_e.tail += Vector((0.1, 0, 0))
b1tip_e.head = b1b_e.tail
b1tip_e.length = b1a_e.length / 4
center = (b1a_e.head + b1a_e.tail) / 2
b1a_e.tail = center
b1b_e.use_connect = False
b1b_e.head = center
# Parenting
if self.use_digit_twist:
b1b_e.parent = eb[self.org_bones[0]]
b1tip_e.parent = eb[self.org_bones[0]]
else:
eb[b1].use_connect = False
eb[b1].parent = eb[self.org_bones[0]]
for (ba, bb) in zip(bones, self.org_bones[1:]):
eb[ba].use_connect = False
eb[ba].parent = eb[bb]
# Constraints
if self.use_digit_twist:
bpy.ops.object.mode_set(mode='OBJECT')
pb = self.obj.pose.bones
b1a_p = pb[b1a]
con = b1a_p.constraints.new('COPY_LOCATION')
con.name = "copy_location"
con.target = self.obj
con.subtarget = self.org_bones[0]
con = b1a_p.constraints.new('COPY_SCALE')
con.name = "copy_scale"
con.target = self.obj
con.subtarget = self.org_bones[0]
con = b1a_p.constraints.new('DAMPED_TRACK')
con.name = "track_to"
con.target = self.obj
con.subtarget = b1tip
def control(self):
""" Generate the control rig.
"""
bpy.ops.object.mode_set(mode='EDIT')
# Figure out the name for the control bone (remove the last .##)
ctrl_name = re.sub("([0-9]+\.)", "", strip_org(self.org_bones[0])[::-1], count=1)[::-1]
# Create the bones
ctrl = copy_bone(self.obj, self.org_bones[0], ctrl_name)
helpers = []
bones = []
for bone in self.org_bones:
bones += [copy_bone(self.obj, bone, strip_org(bone))]
helpers += [copy_bone(self.obj, bone, make_mechanism_name(strip_org(bone)))]
# Position bones
eb = self.obj.data.edit_bones
length = 0.0
for bone in helpers:
length += eb[bone].length
eb[bone].length /= 2
eb[ctrl].length = length * 1.5
# Parent bones
prev = eb[self.org_bones[0]].parent
for (b, h) in zip(bones, helpers):
b_e = eb[b]
h_e = eb[h]
b_e.use_connect = False
h_e.use_connect = False
b_e.parent = h_e
h_e.parent = prev
prev = b_e
# Transform locks and rotation mode
bpy.ops.object.mode_set(mode='OBJECT')
pb = self.obj.pose.bones
for bone in bones[1:]:
pb[bone].lock_location = True, True, True
if pb[self.org_bones[0]].bone.use_connect == True:
pb[bones[0]].lock_location = True, True, True
pb[ctrl].lock_scale = True, False, True
for bone in helpers:
pb[bone].rotation_mode = 'XYZ'
# Drivers
i = 1
val = 1.2 / (len(self.org_bones) - 1)
for bone in helpers:
# Add custom prop
prop_name = "bend_%02d" % i
prop = rna_idprop_ui_prop_get(pb[ctrl], prop_name, create=True)
prop["min"] = 0.0
prop["max"] = 1.0
prop["soft_min"] = 0.0
prop["soft_max"] = 1.0
if i == 1:
pb[ctrl][prop_name] = 0.0
else:
pb[ctrl][prop_name] = val
# Add driver
if 'X' in self.primary_rotation_axis:
fcurve = pb[bone].driver_add("rotation_euler", 0)
elif 'Y' in self.primary_rotation_axis:
fcurve = pb[bone].driver_add("rotation_euler", 1)
else:
fcurve = pb[bone].driver_add("rotation_euler", 2)
driver = fcurve.driver
driver.type = 'SCRIPTED'
var = driver.variables.new()
var.name = "ctrl_y"
var.targets[0].id_type = 'OBJECT'
var.targets[0].id = self.obj
var.targets[0].data_path = pb[ctrl].path_from_id() + '.scale[1]'
var = driver.variables.new()
var.name = "bend"
var.targets[0].id_type = 'OBJECT'
var.targets[0].id = self.obj
var.targets[0].data_path = pb[ctrl].path_from_id() + '["' + prop_name + '"]'
if '-' in self.primary_rotation_axis:
driver.expression = "-(1.0-ctrl_y) * bend * 3.14159 * 2"
else:
driver.expression = "(1.0-ctrl_y) * bend * 3.14159 * 2"
i += 1
# Constraints
con = pb[helpers[0]].constraints.new('COPY_LOCATION')
con.name = "copy_location"
con.target = self.obj
con.subtarget = ctrl
con = pb[helpers[0]].constraints.new('COPY_ROTATION')
con.name = "copy_rotation"
con.target = self.obj
con.subtarget = ctrl
# Constrain org bones to the control bones
for (bone, org) in zip(bones, self.org_bones):
con = pb[org].constraints.new('COPY_TRANSFORMS')
con.name = "copy_transforms"
con.target = self.obj
con.subtarget = bone
# Set layers for extra control bones
if self.ex_layers:
for bone in bones:
pb[bone].bone.layers = self.ex_layers
# Create control widgets
w = create_widget(self.obj, ctrl)
if w != None:
mesh = w.data
verts = [(0, 0, 0), (0, 1, 0), (0.05, 1, 0), (0.05, 1.1, 0), (-0.05, 1.1, 0), (-0.05, 1, 0)]
if 'Z' in self.primary_rotation_axis:
# Flip x/z coordinates
temp = []
for v in verts:
temp += [(v[2], v[1], v[0])]
verts = temp
edges = [(0, 1), (1, 2), (2, 3), (3, 4), (4, 5), (5, 1)]
mesh.from_pydata(verts, edges, [])
mesh.update()
for bone in bones:
create_limb_widget(self.obj, bone)
def generate(self):
""" Generate the rig.
Do NOT modify any of the original bones, except for adding constraints.
The main armature should be selected and active before this is called.
"""
self.deform()
self.control()
@classmethod
def add_parameters(self, group):
""" Add the parameters of this rig type to the
RigifyParameters PropertyGroup
"""
items = [('X', 'X', ''), ('Y', 'Y', ''), ('Z', 'Z', ''), ('-X', '-X', ''), ('-Y', '-Y', ''), ('-Z', '-Z', '')]
group.primary_rotation_axis = bpy.props.EnumProperty(items=items, name="Primary Rotation Axis", default='X')
group.separate_extra_layers = bpy.props.BoolProperty(name="Separate Secondary Control Layers:", default=False, description="Enable putting the secondary controls on a separate layer from the primary controls")
group.extra_layers = bpy.props.BoolVectorProperty(size=32, description="Layers for the secondary controls to be on")
group.use_digit_twist = bpy.props.BoolProperty(name="Digit Twist", default=True, description="Generate the dual-bone twist setup for the first finger digit")
@classmethod
def parameters_ui(self, layout, obj, bone):
""" Create the ui for the rig parameters.
"""
params = obj.pose.bones[bone].rigify_parameters[0]
r = layout.row()
r.prop(params, "separate_extra_layers")
r = layout.row()
r.active = params.separate_extra_layers
col = r.column(align=True)
row = col.row(align=True)
row.prop(params, "extra_layers", index=0, toggle=True, text="")
row.prop(params, "extra_layers", index=1, toggle=True, text="")
row.prop(params, "extra_layers", index=2, toggle=True, text="")
row.prop(params, "extra_layers", index=3, toggle=True, text="")
row.prop(params, "extra_layers", index=4, toggle=True, text="")
row.prop(params, "extra_layers", index=5, toggle=True, text="")
row.prop(params, "extra_layers", index=6, toggle=True, text="")
row.prop(params, "extra_layers", index=7, toggle=True, text="")
row = col.row(align=True)
row.prop(params, "extra_layers", index=16, toggle=True, text="")
row.prop(params, "extra_layers", index=17, toggle=True, text="")
row.prop(params, "extra_layers", index=18, toggle=True, text="")
row.prop(params, "extra_layers", index=19, toggle=True, text="")
row.prop(params, "extra_layers", index=20, toggle=True, text="")
row.prop(params, "extra_layers", index=21, toggle=True, text="")
row.prop(params, "extra_layers", index=22, toggle=True, text="")
row.prop(params, "extra_layers", index=23, toggle=True, text="")
col = r.column(align=True)
row = col.row(align=True)
row.prop(params, "ik_layers", index=8, toggle=True, text="")
row.prop(params, "ik_layers", index=9, toggle=True, text="")
row.prop(params, "ik_layers", index=10, toggle=True, text="")
row.prop(params, "ik_layers", index=11, toggle=True, text="")
row.prop(params, "ik_layers", index=12, toggle=True, text="")
row.prop(params, "ik_layers", index=13, toggle=True, text="")
row.prop(params, "ik_layers", index=14, toggle=True, text="")
row.prop(params, "ik_layers", index=15, toggle=True, text="")
row = col.row(align=True)
row.prop(params, "ik_layers", index=24, toggle=True, text="")
row.prop(params, "ik_layers", index=25, toggle=True, text="")
row.prop(params, "ik_layers", index=26, toggle=True, text="")
row.prop(params, "ik_layers", index=27, toggle=True, text="")
row.prop(params, "ik_layers", index=28, toggle=True, text="")
row.prop(params, "ik_layers", index=29, toggle=True, text="")
row.prop(params, "ik_layers", index=30, toggle=True, text="")
row.prop(params, "ik_layers", index=31, toggle=True, text="")
r = layout.row()
r.label(text="Bend rotation axis:")
r.prop(params, "primary_rotation_axis", text="")
col = layout.column()
col.prop(params, "use_digit_twist")
@classmethod
def create_sample(self, obj):
# generated by rigify.utils.write_metarig
bpy.ops.object.mode_set(mode='EDIT')
arm = obj.data
bones = {}
bone = arm.edit_bones.new('finger.01')
bone.head[:] = 0.0000, 0.0000, 0.0000
bone.tail[:] = 0.2529, 0.0000, 0.0000
bone.roll = 3.1416
bone.use_connect = False
bones['finger.01'] = bone.name
bone = arm.edit_bones.new('finger.02')
bone.head[:] = 0.2529, 0.0000, 0.0000
bone.tail[:] = 0.4024, 0.0000, -0.0264
bone.roll = -2.9671
bone.use_connect = True
bone.parent = arm.edit_bones[bones['finger.01']]
bones['finger.02'] = bone.name
bone = arm.edit_bones.new('finger.03')
bone.head[:] = 0.4024, 0.0000, -0.0264
bone.tail[:] = 0.4975, -0.0000, -0.0610
bone.roll = -2.7925
bone.use_connect = True
bone.parent = arm.edit_bones[bones['finger.02']]
bones['finger.03'] = bone.name
bpy.ops.object.mode_set(mode='OBJECT')
pbone = obj.pose.bones[bones['finger.01']]
pbone.rigify_type = 'finger'
pbone.lock_location = (True, True, True)
pbone.lock_rotation = (False, False, False)
pbone.lock_rotation_w = False
pbone.lock_scale = (False, False, False)
pbone.rotation_mode = 'YZX'
pbone.rigify_parameters.add()
pbone = obj.pose.bones[bones['finger.02']]
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 = 'YZX'
pbone = obj.pose.bones[bones['finger.03']]
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 = 'YZX'
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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