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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 .. import limb_common
from ....utils import MetarigError
from ....utils import connected_children_names, has_connected_children
from ....utils import strip_org
from ....utils import get_layers
from ....utils import create_widget
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 is 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 is 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:
layers = get_layers(params["layers"])
else:
layers = None
primary_rotation_axis = params.primary_rotation_axis
# Leg is based on common limb
self.fk_limb = limb_common.FKLimb(obj, self.org_bones[0], self.org_bones[1], self.org_bones[2], primary_rotation_axis, layers)
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.
"""
ctrl_bones = self.fk_limb.generate()
thigh = ctrl_bones[0]
shin = ctrl_bones[1]
foot = ctrl_bones[2]
foot_mch = ctrl_bones[3]
# Position foot control
bpy.ops.object.mode_set(mode='EDIT')
eb = self.obj.data.edit_bones
foot_e = eb[foot]
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
bpy.ops.object.mode_set(mode='OBJECT')
# Create foot widget
ob = create_widget(self.obj, foot)
if ob is not 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]
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