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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 ========================
import bpy
import math
from mathutils import Vector
from rigify.utils import MetarigError
from rigify.utils import copy_bone, flip_bone, put_bone
from rigify.utils import connected_children_names
from rigify.utils import strip_org, make_mechanism_name, make_deformer_name
from rigify.utils import get_layers
from rigify.utils import create_widget, create_limb_widget
from rna_prop_ui import rna_idprop_ui_prop_get
class Rig:
""" An FK leg rig, with hinge switch.
"""
def __init__(self, obj, bone, params):
""" Gather and validate data about the rig.
Store any data or references to data that will be needed later on.
In particular, store references to bones that will be needed, and
store names of bones that will be needed.
Do NOT change any data in the scene. This is a gathering phase only.
"""
self.obj = obj
self.params = params
# Get the chain of 2 connected bones
leg_bones = [bone] + connected_children_names(self.obj, bone)[:2]
if len(leg_bones) != 2:
raise MetarigError("RIGIFY ERROR: Bone '%s': incorrect bone configuration for rig type." % (strip_org(bone)))
# Get the foot and heel
foot = None
heel = None
for b in self.obj.data.bones[leg_bones[1]].children:
if b.use_connect == True:
if len(b.children) == 0:
heel = b.name
else:
foot = b.name
if foot == None or heel == None:
raise MetarigError("RIGIFY ERROR: Bone '%s': incorrect bone configuration for rig type." % (strip_org(bone)))
# Get the toe
toe = None
for b in self.obj.data.bones[foot].children:
if b.use_connect == True:
toe = b.name
# Get the toe
if toe == None:
raise MetarigError("RIGIFY ERROR: Bone '%s': incorrect bone configuration for rig type." % (strip_org(bone)))
self.org_bones = leg_bones + [foot, toe, heel]
# Get (optional) parent
if self.obj.data.bones[bone].parent == None:
self.org_parent = None
else:
self.org_parent = self.obj.data.bones[bone].parent.name
# Get rig parameters
if "layers" in params:
self.layers = get_layers(params["layers"])
else:
self.layers = None
self.primary_rotation_axis = params.primary_rotation_axis
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.
"""
bpy.ops.object.mode_set(mode='EDIT')
# Create the control bones
thigh = copy_bone(self.obj, self.org_bones[0], strip_org(self.org_bones[0]))
shin = copy_bone(self.obj, self.org_bones[1], strip_org(self.org_bones[1]))
foot = copy_bone(self.obj, self.org_bones[2], strip_org(self.org_bones[2]))
# Create the foot mechanism bone
foot_mch = copy_bone(self.obj, self.org_bones[2], make_mechanism_name(strip_org(self.org_bones[2])))
# Create the hinge bones
if self.org_parent != None:
hinge = copy_bone(self.obj, self.org_parent, make_mechanism_name(thigh + ".hinge"))
socket1 = copy_bone(self.obj, thigh, make_mechanism_name(thigh + ".socket1"))
socket2 = copy_bone(self.obj, thigh, make_mechanism_name(thigh + ".socket2"))
# Get edit bones
eb = self.obj.data.edit_bones
thigh_e = eb[thigh]
shin_e = eb[shin]
foot_e = eb[foot]
foot_mch_e = eb[foot_mch]
if self.org_parent != None:
hinge_e = eb[hinge]
socket1_e = eb[socket1]
socket2_e = eb[socket2]
# Parenting
shin_e.parent = thigh_e
foot_e.parent = shin_e
foot_mch_e.use_connect = False
foot_mch_e.parent = foot_e
if self.org_parent != None:
hinge_e.use_connect = False
socket1_e.use_connect = False
socket2_e.use_connect = False
thigh_e.parent = hinge_e
hinge_e.parent = socket2_e
socket2_e.parent = None
# Positioning
vec = Vector(eb[self.org_bones[3]].vector)
vec = vec.normalize()
foot_e.tail = foot_e.head + (vec * foot_e.length)
foot_e.roll = eb[self.org_bones[3]].roll
if self.org_parent != None:
center = (hinge_e.head + hinge_e.tail) / 2
hinge_e.head = center
socket1_e.length /= 4
socket2_e.length /= 3
# Object mode, get pose bones
bpy.ops.object.mode_set(mode='OBJECT')
pb = self.obj.pose.bones
thigh_p = pb[thigh]
shin_p = pb[shin]
foot_p = pb[foot]
if self.org_parent != None:
socket1_p = pb[socket1]
socket2_p = pb[socket2]
# Set the elbow to only bend on the x-axis.
shin_p.rotation_mode = 'XYZ'
if 'X' in self.primary_rotation_axis:
shin_p.lock_rotation = (False, True, True)
elif 'Y' in self.primary_rotation_axis:
shin_p.lock_rotation = (True, False, True)
else:
shin_p.lock_rotation = (True, True, False)
# Set up custom properties
if self.org_parent != None:
prop = rna_idprop_ui_prop_get(thigh_p, "isolate", create=True)
thigh_p["isolate"] = 0.0
prop["soft_min"] = prop["min"] = 0.0
prop["soft_max"] = prop["max"] = 1.0
# Hinge constraints / drivers
if self.org_parent != None:
con = socket2_p.constraints.new('COPY_LOCATION')
con.name = "copy_location"
con.target = self.obj
con.subtarget = socket1
con = socket2_p.constraints.new('COPY_TRANSFORMS')
con.name = "isolate_off"
con.target = self.obj
con.subtarget = socket1
# Driver
fcurve = con.driver_add("influence")
driver = fcurve.driver
var = driver.variables.new()
driver.type = 'AVERAGE'
var.name = "var"
var.targets[0].id_type = 'OBJECT'
var.targets[0].id = self.obj
var.targets[0].data_path = thigh_p.path_from_id() + '["isolate"]'
mod = fcurve.modifiers[0]
mod.poly_order = 1
mod.coefficients[0] = 1.0
mod.coefficients[1] = -1.0
# Constrain org bones to controls
con = pb[self.org_bones[0]].constraints.new('COPY_TRANSFORMS')
con.name = "fk"
con.target = self.obj
con.subtarget = thigh
con = pb[self.org_bones[1]].constraints.new('COPY_TRANSFORMS')
con.name = "fk"
con.target = self.obj
con.subtarget = shin
con = pb[self.org_bones[2]].constraints.new('COPY_TRANSFORMS')
con.name = "fk"
con.target = self.obj
con.subtarget = foot_mch
# Set layers if specified
if self.layers:
thigh_p.bone.layers = self.layers
shin_p.bone.layers = self.layers
foot_p.bone.layers = self.layers
# Create control widgets
create_limb_widget(self.obj, thigh)
create_limb_widget(self.obj, shin)
ob = create_widget(self.obj, foot)
if ob != None:
verts = [(0.7, 1.5, 0.0), (0.7, -0.25, 0.0), (-0.7, -0.25, 0.0), (-0.7, 1.5, 0.0), (0.7, 0.723, 0.0), (-0.7, 0.723, 0.0), (0.7, 0.0, 0.0), (-0.7, 0.0, 0.0)]
edges = [(1, 2), (0, 3), (0, 4), (3, 5), (4, 6), (1, 6), (5, 7), (2, 7)]
mesh = ob.data
mesh.from_pydata(verts, edges, [])
mesh.update()
mod = ob.modifiers.new("subsurf", 'SUBSURF')
mod.levels = 2
return [thigh, shin, foot]