Source code for openravepy.examples.tutorial_ik5d
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (C) 2009-2011 Rosen Diankov (rosen.diankov@gmail.com)
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Shows how to use 5D translation+direction inverse kinematics for an arm with >= 5 joints.
.. examplepre-block:: tutorial_ik5d
.. examplepost-block:: tutorial_ik5d
"""
from __future__ import with_statement # for python 2.5
__author__ = 'Rosen Diankov'
import time
import openravepy
if not __openravepy_build_doc__:
from openravepy import *
from numpy import *
[docs]def main(env,options):
"Main example code."
env.Load(options.scene)
robot = env.GetRobots()[0]
robot.SetActiveManipulator(options.manipname)
# generate the ik solver
ikmodel = databases.inversekinematics.InverseKinematicsModel(robot, iktype=IkParameterization.Type.TranslationDirection5D)
if not ikmodel.load():
ikmodel.autogenerate()
while True:
with env:
while True:
target=ikmodel.manip.GetTransform()[0:3,3]+(random.rand(3)-0.5)
direction = random.rand(3)-0.5
direction /= linalg.norm(direction)
solutions = ikmodel.manip.FindIKSolutions(IkParameterization(Ray(target,direction),IkParameterization.Type.TranslationDirection5D),IkFilterOptions.CheckEnvCollisions)
if solutions is not None and len(solutions) > 0: # if found, then break
break
h=env.drawlinestrip(array([target,target+0.1*direction]),10)
for i in random.permutation(len(solutions))[0:min(80,len(solutions))]:
with env:
robot.SetDOFValues(solutions[i],ikmodel.manip.GetArmIndices())
env.UpdatePublishedBodies()
time.sleep(0.2)
h=None
from optparse import OptionParser
from openravepy.misc import OpenRAVEGlobalArguments
@openravepy.with_destroy
[docs]def run(args=None):
"""Command-line execution of the example.
:param args: arguments for script to parse, if not specified will use sys.argv
"""
parser = OptionParser(description='Shows how to use the 5DOF IK solution for arms with >= 5 joints.')
OpenRAVEGlobalArguments.addOptions(parser)
parser.add_option('--scene',action="store",type='string',dest='scene',default='data/katanatable.env.xml',
help='Scene file to load (default=%default)')
parser.add_option('--manipname',action="store",type='string',dest='manipname',default='arm',
help='name of manipulator to use (default=%default)')
(options, leftargs) = parser.parse_args(args=args)
OpenRAVEGlobalArguments.parseAndCreateThreadedUser(options,main,defaultviewer=True)
if __name__ == "__main__":
run()