69 lines
3.3 KiB
Python
69 lines
3.3 KiB
Python
from pinocchio.utils import *
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from pinocchio.explog import exp,log
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from numpy.linalg import pinv,norm
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from pinocchio import forwardKinematics, Inertia, JointModelRX, Model, SE3
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import gepetto.corbaserver
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from display import Display
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import eigenpy
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eigenpy.switchToNumpyArray()
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class Visual:
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def __init__(self,name,jointParent,placement):
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self.name = name # Name in gepetto viewer
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self.jointParent = jointParent # ID (int) of the joint
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self.placement = placement # placement of the body wrt joint, i.e. bodyMjoint
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def place(self,display,oMjoint):
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oMbody = oMjoint*self.placement
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display.place(self.name,oMbody,False)
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class Leg():
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def __init__(self,name=''):
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self.name = name
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self.viewer = Display()
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self.visuals = []
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self.model = Model ()
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self.CreateLeg()
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self.data = self.model.createData()
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self.q0 = zero(self.model.nq)
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def CreateLeg(self,rootId=0,jointPlacement=SE3.Identity()):
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color = [red,green,blue,transparency] = [1,1,0.78,1.0]
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colorred = [1.0,0.0,0.0,1.0]
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jointId = rootId
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jointId = rootId
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jointName = self.name+"hip_joint"
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joint = JointModelRX()
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jointId = self.model.addJoint(jointId,joint,jointPlacement,jointName)
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self.model.appendBodyToJoint(jointId,Inertia.Random(),SE3.Identity())
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self.viewer.viewer.gui.addSphere('world/' +self.name+ 'hip', 0.3,colorred)
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self.visuals.append( Visual('world/' + self.name+'hip',jointId,SE3.Identity()) )
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self.viewer.viewer.gui.addBox('world/' +self.name+ 'thigh', .1,.1,.5,color)
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self.visuals.append( Visual('world/' + self.name+'thigh',jointId,SE3(eye(3),np.array([0., 0., -.5]))))
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jointName = self.name+"knee_joint"
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jointPlacement = SE3(eye(3),np.array( [0, 0, -1.0] ))
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joint = JointModelRX()
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jointId = self.model.addJoint(jointId,joint,jointPlacement,jointName)
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self.model.appendBodyToJoint(jointId,Inertia.Random(),SE3.Identity())
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self.viewer.viewer.gui.addSphere('world/' +self.name+ 'knee', 0.3,colorred)
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self.visuals.append( Visual('world/' + self.name+'knee',jointId,SE3.Identity()) )
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self.viewer.viewer.gui.addBox('world/' +self.name+ 'tibia', .1,.1,.5,color)
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self.visuals.append( Visual('world/' +self.name+ 'tibia',jointId,SE3(eye(3),np.array([0., 0., -.5]))))
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jointName = self.name+"ankle_joint"
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jointPlacement = SE3(eye(3),np.array( [0, 0, -1.0] ))
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joint = JointModelRX()
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jointId = self.model.addJoint(jointId,joint,jointPlacement,jointName)
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self.model.appendBodyToJoint(jointId,Inertia.Random(),SE3.Identity())
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self.viewer.viewer.gui.addSphere('world/' + self.name+'ankle', 0.3,colorred)
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self.visuals.append( Visual('world/' + self.name+'ankle',jointId,SE3.Identity()) )
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self.viewer.viewer.gui.addBox('world/' +self.name+ 'feet', .25,.5,.1,color)
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self.visuals.append( Visual('world/' +self.name+ 'feet',jointId,SE3(eye(3),np.array([0., .1, -.25]))))
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def display(self,q):
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forwardKinematics(self.model,self.data,q)
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for visual in self.visuals:
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visual.place( self.viewer,self.data.oMi[visual.jointParent] )
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self.viewer.viewer.gui.refresh()
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