1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
|
#====================== 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
from mathutils import Vector
from rigify.utils import MetarigError
from rigify.utils import copy_bone
from rigify.utils import connected_children_names, has_connected_children
from rigify.utils import strip_org, make_mechanism_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) >= 1 and has_connected_children(b):
foot = b.name
else:
heel = b.name
if foot is None or heel is 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 is 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 is 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.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:
hinge_p = pb[hinge]
if self.org_parent != None:
# socket1_p = pb[socket1] # UNUSED
socket2_p = pb[socket2]
# Set the knee 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)
# Hinge transforms are locked, for auto-ik
if self.org_parent != None:
hinge_p.lock_location = True, True, True
hinge_p.lock_rotation = True, True, True
hinge_p.lock_rotation_w = True
hinge_p.lock_scale = True, True, True
# 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, foot_mch]
|