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bullet3/examples/RoboticsLearning/GripperGraspExample.cpp

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C++
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#include "GripperGraspExample.h"
#include "../CommonInterfaces/CommonGraphicsAppInterface.h"
#include "Bullet3Common/b3Quaternion.h"
#include "Bullet3Common/b3AlignedObjectArray.h"
#include "../CommonInterfaces/CommonRenderInterface.h"
#include "../CommonInterfaces/CommonExampleInterface.h"
#include "../CommonInterfaces/CommonGUIHelperInterface.h"
#include "../SharedMemory/PhysicsServerSharedMemory.h"
#include "../SharedMemory/PhysicsClientC_API.h"
#include "../CommonInterfaces/CommonParameterInterface.h"
#include "../SharedMemory/SharedMemoryPublic.h"
#include <string>
#include "b3RobotSimAPI.h"
#include "../Utils/b3Clock.h"
static btScalar sGripperVerticalVelocity = -0.2f;
static btScalar sGripperClosingTargetVelocity = 0.5f;
class GripperGraspExample : public CommonExampleInterface
{
CommonGraphicsApp* m_app;
GUIHelperInterface* m_guiHelper;
b3RobotSimAPI m_robotSim;
int m_options;
int m_r2d2Index;
int m_gripperIndex;
float m_x;
float m_y;
float m_z;
b3AlignedObjectArray<int> m_movingInstances;
enum
{
numCubesX = 20,
numCubesY = 20
};
public:
GripperGraspExample(GUIHelperInterface* helper, int options)
:m_app(helper->getAppInterface()),
m_guiHelper(helper),
m_options(options),
m_r2d2Index(-1),
m_gripperIndex(-1),
m_x(0),
m_y(0),
m_z(0)
{
m_app->setUpAxis(2);
}
virtual ~GripperGraspExample()
{
m_app->m_renderer->enableBlend(false);
}
virtual void physicsDebugDraw(int debugDrawMode)
{
m_robotSim.debugDraw(debugDrawMode);
}
virtual void initPhysics()
{
bool connected = m_robotSim.connect(m_guiHelper);
b3Printf("robotSim connected = %d",connected);
if ((m_options & eGRIPPER_GRASP)!=0)
{
{
SliderParams slider("Vertical velocity",&sGripperVerticalVelocity);
slider.m_minVal=-2;
slider.m_maxVal=2;
m_guiHelper->getParameterInterface()->registerSliderFloatParameter(slider);
}
{
SliderParams slider("Closing velocity",&sGripperClosingTargetVelocity
);
slider.m_minVal=-1;
slider.m_maxVal=1;
m_guiHelper->getParameterInterface()->registerSliderFloatParameter(slider);
}
{
b3RobotSimLoadFileArgs args("");
b3RobotSimLoadFileResults results;
args.m_fileName = "cube_small.urdf";
args.m_startPosition.setValue(0, 0, .107);
args.m_startOrientation.setEulerZYX(0, 0, 0);
args.m_useMultiBody = true;
m_robotSim.loadFile(args, results);
}
{
b3RobotSimLoadFileArgs args("");
args.m_fileName = "gripper/wsg50_with_r2d2_gripper.sdf";
args.m_fileType = B3_SDF_FILE;
args.m_useMultiBody = true;
b3RobotSimLoadFileResults results;
if (m_robotSim.loadFile(args, results) && results.m_uniqueObjectIds.size()==1)
{
m_gripperIndex = results.m_uniqueObjectIds[0];
int numJoints = m_robotSim.getNumJoints(m_gripperIndex);
b3Printf("numJoints = %d",numJoints);
for (int i=0;i<numJoints;i++)
{
b3JointInfo jointInfo;
m_robotSim.getJointInfo(m_gripperIndex,i,&jointInfo);
b3Printf("joint[%d].m_jointName=%s",i,jointInfo.m_jointName);
}
/*
int fingerJointIndices[2]={1,3};
double fingerTargetPositions[2]={-0.04,0.04};
for (int i=0;i<2;i++)
{
b3JointMotorArgs controlArgs(CONTROL_MODE_POSITION_VELOCITY_PD);
controlArgs.m_targetPosition = fingerTargetPositions[i];
controlArgs.m_kp = 5.0;
controlArgs.m_kd = 3.0;
controlArgs.m_maxTorqueValue = 1.0;
m_robotSim.setJointMotorControl(m_gripperIndex,fingerJointIndices[i],controlArgs);
}
*/
int fingerJointIndices[3]={0,1,3};
double fingerTargetVelocities[3]={-0.2,.5,-.5};
double maxTorqueValues[3]={40.0,50.0,50.0};
for (int i=0;i<3;i++)
{
b3JointMotorArgs controlArgs(CONTROL_MODE_VELOCITY);
controlArgs.m_targetVelocity = fingerTargetVelocities[i];
controlArgs.m_maxTorqueValue = maxTorqueValues[i];
controlArgs.m_kd = 1.;
m_robotSim.setJointMotorControl(m_gripperIndex,fingerJointIndices[i],controlArgs);
}
}
}
if (1)
{
b3RobotSimLoadFileArgs args("");
args.m_fileName = "plane.urdf";
args.m_startPosition.setValue(0,0,0);
args.m_startOrientation.setEulerZYX(0,0,0);
args.m_forceOverrideFixedBase = true;
args.m_useMultiBody = true;
b3RobotSimLoadFileResults results;
m_robotSim.loadFile(args,results);
}
m_robotSim.setGravity(b3MakeVector3(0,0,-10));
m_robotSim.setNumSimulationSubSteps(4);
}
if ((m_options & eTWO_POINT_GRASP)!=0)
{
{
b3RobotSimLoadFileArgs args("");
b3RobotSimLoadFileResults results;
args.m_fileName = "cube_small.urdf";
args.m_startPosition.setValue(0, 0, .107);
args.m_startOrientation.setEulerZYX(0, 0, 0);
args.m_useMultiBody = true;
m_robotSim.loadFile(args, results);
}
{
b3RobotSimLoadFileArgs args("");
b3RobotSimLoadFileResults results;
args.m_fileName = "cube_gripper_left.urdf";
args.m_startPosition.setValue(0.068, 0.02, 0.11);
args.m_useMultiBody = true;
m_robotSim.loadFile(args, results);
b3JointMotorArgs controlArgs(CONTROL_MODE_VELOCITY);
controlArgs.m_targetVelocity = -0.1;
controlArgs.m_maxTorqueValue = 10.0;
controlArgs.m_kd = 1.;
m_robotSim.setJointMotorControl(1,0,controlArgs);
}
{
b3RobotSimLoadFileArgs args("");
b3RobotSimLoadFileResults results;
args.m_fileName = "cube_gripper_right.urdf";
args.m_startPosition.setValue(-0.068, 0.02, 0.11);
args.m_useMultiBody = true;
m_robotSim.loadFile(args, results);
b3JointMotorArgs controlArgs(CONTROL_MODE_VELOCITY);
controlArgs.m_targetVelocity = 0.1;
controlArgs.m_maxTorqueValue = 10.0;
controlArgs.m_kd = 1.;
m_robotSim.setJointMotorControl(2,0,controlArgs);
}
if (1)
{
b3RobotSimLoadFileArgs args("");
args.m_fileName = "plane.urdf";
args.m_startPosition.setValue(0,0,0);
args.m_startOrientation.setEulerZYX(0,0,0);
args.m_forceOverrideFixedBase = true;
args.m_useMultiBody = true;
b3RobotSimLoadFileResults results;
m_robotSim.loadFile(args,results);
}
m_robotSim.setGravity(b3MakeVector3(0,0,-10));
m_robotSim.setNumSimulationSubSteps(4);
}
if ((m_options & eONE_MOTOR_GRASP)!=0)
{
{
SliderParams slider("Vertical velocity",&sGripperVerticalVelocity);
slider.m_minVal=-2;
slider.m_maxVal=2;
m_guiHelper->getParameterInterface()->registerSliderFloatParameter(slider);
}
{
SliderParams slider("Closing velocity",&sGripperClosingTargetVelocity
);
slider.m_minVal=-1;
slider.m_maxVal=1;
m_guiHelper->getParameterInterface()->registerSliderFloatParameter(slider);
}
{
b3RobotSimLoadFileArgs args("");
b3RobotSimLoadFileResults results;
args.m_fileName = "sphere_small.urdf";
args.m_startPosition.setValue(0, 0, .107);
args.m_startOrientation.setEulerZYX(0, 0, 0);
args.m_useMultiBody = true;
m_robotSim.loadFile(args, results);
}
{
b3RobotSimLoadFileArgs args("");
args.m_fileName = "gripper/wsg50_one_motor_gripper_new.sdf";
args.m_fileType = B3_SDF_FILE;
args.m_useMultiBody = true;
b3RobotSimLoadFileResults results;
if (m_robotSim.loadFile(args, results) && results.m_uniqueObjectIds.size()==1)
{
m_gripperIndex = results.m_uniqueObjectIds[0];
int numJoints = m_robotSim.getNumJoints(m_gripperIndex);
b3Printf("numJoints = %d",numJoints);
for (int i=0;i<numJoints;i++)
{
b3JointInfo jointInfo;
m_robotSim.getJointInfo(m_gripperIndex,i,&jointInfo);
b3Printf("joint[%d].m_jointName=%s",i,jointInfo.m_jointName);
}
for (int i=0;i<8;i++)
{
b3JointMotorArgs controlArgs(CONTROL_MODE_VELOCITY);
controlArgs.m_maxTorqueValue = 0.0;
m_robotSim.setJointMotorControl(m_gripperIndex,i,controlArgs);
}
}
}
if (1)
{
b3RobotSimLoadFileArgs args("");
args.m_fileName = "plane.urdf";
args.m_startPosition.setValue(0,0,0);
args.m_startOrientation.setEulerZYX(0,0,0);
args.m_forceOverrideFixedBase = true;
args.m_useMultiBody = true;
b3RobotSimLoadFileResults results;
m_robotSim.loadFile(args,results);
}
m_robotSim.setGravity(b3MakeVector3(0,0,-10));
/*
b3JointInfo sliderJoint1;
sliderJoint1.m_parentFrame[0] = 0;
sliderJoint1.m_parentFrame[1] = 0;
sliderJoint1.m_parentFrame[2] = 0.06;
sliderJoint1.m_parentFrame[3] = 0;
sliderJoint1.m_parentFrame[4] = 0;
sliderJoint1.m_parentFrame[5] = 0;
sliderJoint1.m_parentFrame[6] = 1.0;
sliderJoint1.m_childFrame[0] = 0;
sliderJoint1.m_childFrame[1] = 0;
sliderJoint1.m_childFrame[2] = 0;
sliderJoint1.m_childFrame[3] = 0;
sliderJoint1.m_childFrame[4] = 0;
sliderJoint1.m_childFrame[5] = 0;
sliderJoint1.m_childFrame[6] = 1.0;
sliderJoint1.m_jointAxis[0] = 1.0;
sliderJoint1.m_jointAxis[1] = 0.0;
sliderJoint1.m_jointAxis[2] = 0.0;
sliderJoint1.m_jointType = ePrismaticType;
b3JointInfo sliderJoint2;
sliderJoint2.m_parentFrame[0] = 0;
sliderJoint2.m_parentFrame[1] = 0;
sliderJoint2.m_parentFrame[2] = 0.06;
sliderJoint2.m_parentFrame[3] = 0;
sliderJoint2.m_parentFrame[4] = 0;
sliderJoint2.m_parentFrame[5] = 0;
sliderJoint2.m_parentFrame[6] = 1.0;
sliderJoint2.m_childFrame[0] = 0;
sliderJoint2.m_childFrame[1] = 0;
sliderJoint2.m_childFrame[2] = 0;
sliderJoint2.m_childFrame[3] = 0;
sliderJoint2.m_childFrame[4] = 0;
sliderJoint2.m_childFrame[5] = 1.0;
sliderJoint2.m_childFrame[6] = 0;
sliderJoint2.m_jointAxis[0] = 1.0;
sliderJoint2.m_jointAxis[1] = 0.0;
sliderJoint2.m_jointAxis[2] = 0.0;
sliderJoint2.m_jointType = ePrismaticType;
m_robotSim.createJoint(1, 0, 1, 3, &sliderJoint1);
m_robotSim.createJoint(1, 0, 1, 6, &sliderJoint2);
*/
b3JointInfo revoluteJoint1;
revoluteJoint1.m_parentFrame[0] = -0.055;
revoluteJoint1.m_parentFrame[1] = 0;
revoluteJoint1.m_parentFrame[2] = 0.02;
revoluteJoint1.m_parentFrame[3] = 0;
revoluteJoint1.m_parentFrame[4] = 0;
revoluteJoint1.m_parentFrame[5] = 0;
revoluteJoint1.m_parentFrame[6] = 1.0;
revoluteJoint1.m_childFrame[0] = 0;
revoluteJoint1.m_childFrame[1] = 0;
revoluteJoint1.m_childFrame[2] = 0;
revoluteJoint1.m_childFrame[3] = 0;
revoluteJoint1.m_childFrame[4] = 0;
revoluteJoint1.m_childFrame[5] = 0;
revoluteJoint1.m_childFrame[6] = 1.0;
revoluteJoint1.m_jointAxis[0] = 1.0;
revoluteJoint1.m_jointAxis[1] = 0.0;
revoluteJoint1.m_jointAxis[2] = 0.0;
revoluteJoint1.m_jointType = ePoint2PointType;
b3JointInfo revoluteJoint2;
revoluteJoint2.m_parentFrame[0] = 0.055;
revoluteJoint2.m_parentFrame[1] = 0;
revoluteJoint2.m_parentFrame[2] = 0.02;
revoluteJoint2.m_parentFrame[3] = 0;
revoluteJoint2.m_parentFrame[4] = 0;
revoluteJoint2.m_parentFrame[5] = 0;
revoluteJoint2.m_parentFrame[6] = 1.0;
revoluteJoint2.m_childFrame[0] = 0;
revoluteJoint2.m_childFrame[1] = 0;
revoluteJoint2.m_childFrame[2] = 0;
revoluteJoint2.m_childFrame[3] = 0;
revoluteJoint2.m_childFrame[4] = 0;
revoluteJoint2.m_childFrame[5] = 0;
revoluteJoint2.m_childFrame[6] = 1.0;
revoluteJoint2.m_jointAxis[0] = 1.0;
revoluteJoint2.m_jointAxis[1] = 0.0;
revoluteJoint2.m_jointAxis[2] = 0.0;
revoluteJoint2.m_jointType = ePoint2PointType;
m_robotSim.createJoint(1, 2, 1, 4, &revoluteJoint1);
m_robotSim.createJoint(1, 3, 1, 6, &revoluteJoint2);
}
}
virtual void exitPhysics()
{
m_robotSim.disconnect();
}
virtual void stepSimulation(float deltaTime)
{
if ((m_options & eGRIPPER_GRASP)!=0)
{
if ((m_gripperIndex>=0))
{
int fingerJointIndices[3]={0,1,3};
double fingerTargetVelocities[3]={sGripperVerticalVelocity,sGripperClosingTargetVelocity
,-sGripperClosingTargetVelocity
};
double maxTorqueValues[3]={40.0,50.0,50.0};
for (int i=0;i<3;i++)
{
b3JointMotorArgs controlArgs(CONTROL_MODE_VELOCITY);
controlArgs.m_targetVelocity = fingerTargetVelocities[i];
controlArgs.m_maxTorqueValue = maxTorqueValues[i];
controlArgs.m_kd = 1.;
m_robotSim.setJointMotorControl(m_gripperIndex,fingerJointIndices[i],controlArgs);
}
}
}
if ((m_options & eONE_MOTOR_GRASP)!=0)
{
int fingerJointIndices[2]={0,1};
double fingerTargetVelocities[2]={sGripperVerticalVelocity,sGripperClosingTargetVelocity
};
double maxTorqueValues[2]={50.0,50.0};
for (int i=0;i<2;i++)
{
b3JointMotorArgs controlArgs(CONTROL_MODE_VELOCITY);
controlArgs.m_targetVelocity = fingerTargetVelocities[i];
controlArgs.m_maxTorqueValue = maxTorqueValues[i];
controlArgs.m_kd = 1.;
m_robotSim.setJointMotorControl(m_gripperIndex,fingerJointIndices[i],controlArgs);
}
}
m_robotSim.stepSimulation();
}
virtual void renderScene()
{
m_robotSim.renderScene();
//m_app->m_renderer->renderScene();
}
virtual void physicsDebugDraw()
{
}
virtual bool mouseMoveCallback(float x,float y)
{
return false;
}
virtual bool mouseButtonCallback(int button, int state, float x, float y)
{
return false;
}
virtual bool keyboardCallback(int key, int state)
{
return false;
}
virtual void resetCamera()
{
float dist = 1.5;
float pitch = 12;
float yaw = -10;
float targetPos[3]={-0.2,0.8,0.3};
if (m_app->m_renderer && m_app->m_renderer->getActiveCamera())
{
m_app->m_renderer->getActiveCamera()->setCameraDistance(dist);
m_app->m_renderer->getActiveCamera()->setCameraPitch(pitch);
m_app->m_renderer->getActiveCamera()->setCameraYaw(yaw);
m_app->m_renderer->getActiveCamera()->setCameraTargetPosition(targetPos[0],targetPos[1],targetPos[2]);
}
}
};
class CommonExampleInterface* GripperGraspExampleCreateFunc(struct CommonExampleOptions& options)
{
return new GripperGraspExample(options.m_guiHelper, options.m_option);
}
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