blender/release/scripts/modules/rigify/stretch.py
Campbell Barton 4f5f868a52 rna data path names which are more likely to break animations.
Added an operator "Update Animation Data",
access from the search menu to update drivers and fcurves.
2010-08-20 06:09:58 +00:00

110 lines
3.4 KiB
Python

# ##### 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 rigify import RigifyError
from rigify_utils import copy_bone_simple
METARIG_NAMES = tuple()
RIG_TYPE = "stretch"
# TODO
#def metarig_template():
# # generated by rigify.write_meta_rig
# bpy.ops.object.mode_set(mode='EDIT')
# obj = bpy.context.active_object
# arm = obj.data
# bone = arm.edit_bones.new('Bone')
# bone.head[:] = 0.0000, 0.0000, 0.0000
# bone.tail[:] = 0.0000, 0.0000, 1.0000
# bone.roll = 0.0000
# bone.use_connect = False
#
# bpy.ops.object.mode_set(mode='OBJECT')
# pbone = obj.pose.bones['Bone']
# pbone['type'] = 'copy'
bool_map = {0: False, 1: True,
0.0: False, 1.0: True,
"false": False, "true": True,
"False": False, "True": True,
"no": False, "yes": True,
"No": False, "Yes": True}
def metarig_definition(obj, orig_bone_name):
return (orig_bone_name,)
def main(obj, bone_definition, base_names, options):
""" A stretchy bone from one bone to another.
Deformation only (no controls).
"""
# Verify required parameter
if "to" not in options:
raise RigifyError("'%s' rig type requires a 'to' parameter (bone: %s)" % (RIG_TYPE, base_names[bone_definition[0]]))
if type(options["to"]) is not str:
raise RigifyError("'%s' rig type 'to' parameter must be a string (bone: %s)" % (RIG_TYPE, base_names[bone_definition[0]]))
if ("ORG-" + options["to"]) not in obj.data.bones:
raise RigifyError("'%s' rig type 'to' parameter must name a bone in the metarig (bone: %s)" % (RIG_TYPE, base_names[bone_definition[0]]))
preserve_volume = None
# Check optional parameter
if "preserve_volume" in options:
try:
preserve_volume = bool_map[options["preserve_volume"]]
except KeyError:
preserve_volume = False
eb = obj.data.edit_bones
bb = obj.data.bones
pb = obj.pose.bones
bpy.ops.object.mode_set(mode='EDIT')
arm = obj.data
mbone1 = bone_definition[0]
mbone2 = "ORG-" + options["to"]
bone_e = copy_bone_simple(obj.data, mbone1, "DEF-%s" % base_names[bone_definition[0]])
bone_e.use_connect = False
bone_e.parent = eb[mbone1]
bone_e.tail = eb[mbone2].head
bone = bone_e.name
bpy.ops.object.mode_set(mode='OBJECT')
# Constraints
con = pb[bone].constraints.new('DAMPED_TRACK')
con.target = obj
con.subtarget = mbone2
con = pb[bone].constraints.new('STRETCH_TO')
con.target = obj
con.subtarget = mbone2
con.rest_length = bb[bone].length
if preserve_volume:
con.volume = 'VOLUME_XZX'
else:
con.volume = 'NO_VOLUME'
return tuple()