Merge remote-tracking branch 'bp/master'

This commit is contained in:
erwin coumans 2016-10-19 07:43:46 -07:00
commit eda400d14c
18 changed files with 730 additions and 77 deletions

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@ -27,6 +27,7 @@ SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -D_DEBUG")
OPTION(USE_DOUBLE_PRECISION "Use double precision" OFF)
OPTION(USE_GRAPHICAL_BENCHMARK "Use Graphical Benchmark" ON)
OPTION(BUILD_SHARED_LIBS "Use shared libraries" OFF)
OPTION(USE_SOFT_BODY_MULTI_BODY_DYNAMICS_WORLD "Use btSoftMultiBodyDynamicsWorld" OFF)
OPTION(USE_MSVC_INCREMENTAL_LINKING "Use MSVC Incremental Linking" OFF)
OPTION(USE_CUSTOM_VECTOR_MATH "Use custom vectormath library" OFF)
@ -146,6 +147,10 @@ ADD_DEFINITIONS( -DBT_USE_DOUBLE_PRECISION)
SET( BULLET_DOUBLE_DEF "-DBT_USE_DOUBLE_PRECISION")
ENDIF (USE_DOUBLE_PRECISION)
IF (USE_SOFT_BODY_MULTI_BODY_DYNAMICS_WORLD)
ADD_DEFINITIONS(-DUSE_SOFT_BODY_MULTI_BODY_DYNAMICS_WORLD)
ENDIF (USE_SOFT_BODY_MULTI_BODY_DYNAMICS_WORLD)
IF(USE_GRAPHICAL_BENCHMARK)
ADD_DEFINITIONS( -DUSE_GRAPHICAL_BENCHMARK)
ENDIF (USE_GRAPHICAL_BENCHMARK)

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@ -2,7 +2,7 @@
<sdf version='1.6'>
<world name='default'>
<model name='wsg50_with_gripper'>
<pose frame=''>0 0 0.26 3.14 0 0</pose>
<pose frame=''>0 0 0.7 3.14 0 0</pose>
<link name='world'>
</link>

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@ -267,6 +267,7 @@ static ExampleEntry gDefaultExamples[]=
ExampleEntry(1,"Gripper Grasp","Grasp experiment with a gripper to improve contact model", GripperGraspExampleCreateFunc,eGRIPPER_GRASP),
ExampleEntry(1,"Two Point Grasp","Grasp experiment with two point contact to test rolling friction", GripperGraspExampleCreateFunc, eTWO_POINT_GRASP),
ExampleEntry(1,"One Motor Gripper Grasp","Grasp experiment with a gripper with one motor to test slider constraint for closed loop structure", GripperGraspExampleCreateFunc, eONE_MOTOR_GRASP),
ExampleEntry(1,"Grasp Soft Body","Grasp soft body experiment", GripperGraspExampleCreateFunc, eGRASP_SOFT_BODY),
#ifdef ENABLE_LUA

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@ -217,7 +217,6 @@ public:
if ((m_options & eONE_MOTOR_GRASP)!=0)
{
{
SliderParams slider("Vertical velocity",&sGripperVerticalVelocity);
slider.m_minVal=-2;
@ -241,7 +240,6 @@ public:
args.m_useMultiBody = true;
m_robotSim.loadFile(args, results);
}
{
b3RobotSimLoadFileArgs args("");
args.m_fileName = "gripper/wsg50_one_motor_gripper_new.sdf";
@ -287,48 +285,6 @@ public:
}
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;
@ -371,6 +327,110 @@ public:
m_robotSim.createJoint(1, 3, 1, 6, &revoluteJoint2);
}
if ((m_options & eGRASP_SOFT_BODY)!=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);
}
if (1)
{
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));
m_robotSim.loadBunny();
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(0, 2, 0, 4, &revoluteJoint1);
m_robotSim.createJoint(0, 3, 0, 6, &revoluteJoint2);
}
}
virtual void exitPhysics()
{
@ -414,6 +474,21 @@ public:
}
}
if ((m_options & eGRASP_SOFT_BODY)!=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();
}

View File

@ -21,6 +21,7 @@ enum GripperGraspExampleOptions
eGRIPPER_GRASP=1,
eTWO_POINT_GRASP=2,
eONE_MOTOR_GRASP=4,
eGRASP_SOFT_BODY=8,
};
class CommonExampleInterface* GripperGraspExampleCreateFunc(struct CommonExampleOptions& options);

View File

@ -961,10 +961,12 @@ void b3RobotSimAPI::renderScene()
}
}
if (m_data->m_clientServerDirect)
{
m_data->m_clientServerDirect->renderScene();
}
m_data->m_physicsServer.renderScene();
}
@ -996,4 +998,10 @@ void b3RobotSimAPI::getLinkState(int bodyUniqueId, int linkIndex, double* worldP
worldOrientation[2] = linkState.m_worldOrientation[2];
worldOrientation[3] = linkState.m_worldOrientation[3];
}
}
void b3RobotSimAPI::loadBunny()
{
b3SharedMemoryCommandHandle command = b3LoadBunnyCommandInit(m_data->m_physicsClient);
b3SubmitClientCommand(m_data->m_physicsClient, command);
}

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@ -164,6 +164,8 @@ public:
void getBodyJacobian(int bodyUniqueId, int linkIndex, const double* localPosition, const double* jointPositions, const double* jointVelocities, const double* jointAccelerations, double* linearJacobian, double* angularJacobian);
void getLinkState(int bodyUniqueId, int linkIndex, double* worldPosition, double* worldOrientation);
void loadBunny();
};
#endif //B3_ROBOT_SIM_API_H

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@ -75,6 +75,20 @@ b3SharedMemoryCommandHandle b3LoadUrdfCommandInit(b3PhysicsClientHandle physClie
return (b3SharedMemoryCommandHandle) command;
}
b3SharedMemoryCommandHandle b3LoadBunnyCommandInit(b3PhysicsClientHandle physClient)
{
PhysicsClient* cl = (PhysicsClient* ) physClient;
b3Assert(cl);
b3Assert(cl->canSubmitCommand());
struct SharedMemoryCommand* command = cl->getAvailableSharedMemoryCommand();
b3Assert(command);
command->m_type = CMD_LOAD_BUNNY;
command->m_updateFlags = 0;
return (b3SharedMemoryCommandHandle) command;
}
int b3LoadUrdfCommandSetUseMultiBody(b3SharedMemoryCommandHandle commandHandle, int useMultiBody)
{
struct SharedMemoryCommand* command = (struct SharedMemoryCommand*) commandHandle;

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@ -222,6 +222,8 @@ b3SharedMemoryCommandHandle b3RemovePickingConstraint(b3PhysicsClientHandle phys
b3SharedMemoryCommandHandle b3ApplyExternalForceCommandInit(b3PhysicsClientHandle physClient);
void b3ApplyExternalForce(b3SharedMemoryCommandHandle commandHandle, int bodyUniqueId, int linkId, const double force[3], const double position[3], int flags);
void b3ApplyExternalTorque(b3SharedMemoryCommandHandle commandHandle, int bodyUniqueId, int linkId, const double torque[3], int flags);
b3SharedMemoryCommandHandle b3LoadBunnyCommandInit(b3PhysicsClientHandle physClient);
#ifdef __cplusplus
}

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@ -5,7 +5,6 @@
#include "../Importers/ImportURDFDemo/URDF2Bullet.h"
#include "../Extras/InverseDynamics/btMultiBodyTreeCreator.hpp"
#include "TinyRendererVisualShapeConverter.h"
#include "BulletDynamics/Featherstone/btMultiBodyDynamicsWorld.h"
#include "BulletDynamics/Featherstone/btMultiBodyConstraintSolver.h"
#include "BulletDynamics/Featherstone/btMultiBodyPoint2Point.h"
#include "BulletDynamics/Featherstone/btMultiBodyLinkCollider.h"
@ -27,6 +26,16 @@
#include "../CommonInterfaces/CommonGUIHelperInterface.h"
#include "SharedMemoryCommands.h"
#ifdef USE_SOFT_BODY_MULTI_BODY_DYNAMICS_WORLD
#include "BulletSoftBody/btSoftBodyRigidBodyCollisionConfiguration.h"
#include "BulletSoftBody/btSoftBodySolvers.h"
#include "BulletSoftBody/btSoftBodyHelpers.h"
#include "BulletSoftBody/btSoftMultiBodyDynamicsWorld.h"
#include "../SoftDemo/BunnyMesh.h"
#else
#include "BulletDynamics/Featherstone/btMultiBodyDynamicsWorld.h"
#endif
//@todo(erwincoumans) those globals are hacks for a VR demo, move this to Python/pybullet!
btVector3 gLastPickPos(0, 0, 0);
@ -431,9 +440,17 @@ struct PhysicsServerCommandProcessorInternalData
btCollisionDispatcher* m_dispatcher;
btMultiBodyConstraintSolver* m_solver;
btDefaultCollisionConfiguration* m_collisionConfiguration;
btMultiBodyDynamicsWorld* m_dynamicsWorld;
#ifdef USE_SOFT_BODY_MULTI_BODY_DYNAMICS_WORLD
btSoftMultiBodyDynamicsWorld* m_dynamicsWorld;
btSoftBodySolver* m_softbodySolver;
btSoftBodyWorldInfo m_softBodyWorldInfo;
#else
btMultiBodyDynamicsWorld* m_dynamicsWorld;
#endif
SharedMemoryDebugDrawer* m_remoteDebugDrawer;
btAlignedObjectArray<b3ContactPointData> m_cachedContactPoints;
btAlignedObjectArray<int> m_sdfRecentLoadedBodies;
@ -608,28 +625,35 @@ PhysicsServerCommandProcessor::~PhysicsServerCommandProcessor()
void PhysicsServerCommandProcessor::createEmptyDynamicsWorld()
{
///collision configuration contains default setup for memory, collision setup
m_data->m_collisionConfiguration = new btDefaultCollisionConfiguration();
//m_collisionConfiguration->setConvexConvexMultipointIterations();
///use the default collision dispatcher. For parallel processing you can use a diffent dispatcher (see Extras/BulletMultiThreaded)
m_data->m_dispatcher = new btCollisionDispatcher(m_data->m_collisionConfiguration);
m_data->m_broadphase = new btDbvtBroadphase();
m_data->m_solver = new btMultiBodyConstraintSolver;
m_data->m_dynamicsWorld = new btMultiBodyDynamicsWorld(m_data->m_dispatcher, m_data->m_broadphase, m_data->m_solver, m_data->m_collisionConfiguration);
//Workaround: in a VR application, where we avoid synchronizaing between GFX/Physics threads, we don't want to resize this array, so pre-allocate it
m_data->m_dynamicsWorld->getCollisionObjectArray().reserve(8192);
m_data->m_remoteDebugDrawer = new SharedMemoryDebugDrawer();
m_data->m_dynamicsWorld->setGravity(btVector3(0, 0, 0));
m_data->m_dynamicsWorld->getSolverInfo().m_erp2 = 0.08;
///collision configuration contains default setup for memory, collision setup
//m_collisionConfiguration->setConvexConvexMultipointIterations();
#ifdef USE_SOFT_BODY_MULTI_BODY_DYNAMICS_WORLD
m_data->m_collisionConfiguration = new btSoftBodyRigidBodyCollisionConfiguration();
#else
m_data->m_collisionConfiguration = new btDefaultCollisionConfiguration();
#endif
///use the default collision dispatcher. For parallel processing you can use a diffent dispatcher (see Extras/BulletMultiThreaded)
m_data->m_dispatcher = new btCollisionDispatcher(m_data->m_collisionConfiguration);
m_data->m_broadphase = new btDbvtBroadphase();
m_data->m_solver = new btMultiBodyConstraintSolver;
#ifdef USE_SOFT_BODY_MULTI_BODY_DYNAMICS_WORLD
m_data->m_dynamicsWorld = new btSoftMultiBodyDynamicsWorld(m_data->m_dispatcher, m_data->m_broadphase, m_data->m_solver, m_data->m_collisionConfiguration);
#else
m_data->m_dynamicsWorld = new btMultiBodyDynamicsWorld(m_data->m_dispatcher, m_data->m_broadphase, m_data->m_solver, m_data->m_collisionConfiguration);
#endif
//Workaround: in a VR application, where we avoid synchronizaing between GFX/Physics threads, we don't want to resize this array, so pre-allocate it
m_data->m_dynamicsWorld->getCollisionObjectArray().reserve(8192);
m_data->m_remoteDebugDrawer = new SharedMemoryDebugDrawer();
m_data->m_dynamicsWorld->setGravity(btVector3(0, 0, 0));
m_data->m_dynamicsWorld->getSolverInfo().m_erp2 = 0.08;
}
void PhysicsServerCommandProcessor::deleteCachedInverseDynamicsBodies()
@ -1599,6 +1623,36 @@ bool PhysicsServerCommandProcessor::processCommand(const struct SharedMemoryComm
break;
}
case CMD_LOAD_BUNNY:
{
#ifdef USE_SOFT_BODY_MULTI_BODY_DYNAMICS_WORLD
m_data->m_softBodyWorldInfo.air_density = (btScalar)1.2;
m_data->m_softBodyWorldInfo.water_density = 0;
m_data->m_softBodyWorldInfo.water_offset = 0;
m_data->m_softBodyWorldInfo.water_normal = btVector3(0,0,0);
m_data->m_softBodyWorldInfo.m_gravity.setValue(0,0,-10);
m_data->m_softBodyWorldInfo.m_broadphase = m_data->m_broadphase;
m_data->m_softBodyWorldInfo.m_sparsesdf.Initialize();
btSoftBody* psb=btSoftBodyHelpers::CreateFromTriMesh(m_data->m_softBodyWorldInfo,gVerticesBunny, &gIndicesBunny[0][0], BUNNY_NUM_TRIANGLES);
btSoftBody::Material* pm=psb->appendMaterial();
pm->m_kLST = 1.0;
pm->m_flags -= btSoftBody::fMaterial::DebugDraw;
psb->generateBendingConstraints(2,pm);
psb->m_cfg.piterations = 2;
psb->m_cfg.kDF = 0.5;
psb->randomizeConstraints();
psb->rotate(btQuaternion(0.70711,0,0,0.70711));
psb->translate(btVector3(0,0,3.0));
psb->scale(btVector3(0.1,0.1,0.1));
psb->setTotalMass(1,true);
psb->getCollisionShape()->setMargin(0.01);
m_data->m_dynamicsWorld->addSoftBody(psb);
#endif
break;
}
case CMD_CREATE_SENSOR:
@ -2973,7 +3027,17 @@ void PhysicsServerCommandProcessor::renderScene()
m_data->m_guiHelper->syncPhysicsToGraphics(m_data->m_dynamicsWorld);
m_data->m_guiHelper->render(m_data->m_dynamicsWorld);
}
#ifdef USE_SOFT_BODY_MULTI_BODY_DYNAMICS_WORLD
for ( int i=0;i<m_data->m_dynamicsWorld->getSoftBodyArray().size();i++)
{
btSoftBody* psb=(btSoftBody*)m_data->m_dynamicsWorld->getSoftBodyArray()[i];
if (m_data->m_dynamicsWorld->getDebugDrawer() && !(m_data->m_dynamicsWorld->getDebugDrawer()->getDebugMode() & (btIDebugDraw::DBG_DrawWireframe)))
{
//btSoftBodyHelpers::DrawFrame(psb,m_data->m_dynamicsWorld->getDebugDrawer());
btSoftBodyHelpers::Draw(psb,m_data->m_dynamicsWorld->getDebugDrawer(),m_data->m_dynamicsWorld->getDrawFlags());
}
}
#endif
}
void PhysicsServerCommandProcessor::physicsDebugDraw(int debugDrawFlags)

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@ -7,6 +7,7 @@ enum EnumSharedMemoryClientCommand
{
CMD_LOAD_SDF,
CMD_LOAD_URDF,
CMD_LOAD_BUNNY,
CMD_SEND_BULLET_DATA_STREAM,
CMD_CREATE_BOX_COLLISION_SHAPE,
// CMD_DELETE_BOX_COLLISION_SHAPE,

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@ -1017,7 +1017,7 @@ static void Init_Bunny(SoftDemo* pdemo)
psb->m_cfg.kDF = 0.5;
psb->randomizeConstraints();
psb->scale(btVector3(6,6,6));
psb->setTotalMass(100,true);
psb->setTotalMass(100,true);
pdemo->getSoftDynamicsWorld()->addSoftBody(psb);
pdemo->m_cutting=true;
@ -2167,7 +2167,6 @@ void SoftDemo::initPhysics()
m_collisionShapes.push_back(cylinderCompound);
m_dispatcher=0;
///register some softbody collision algorithms on top of the default btDefaultCollisionConfiguration

View File

@ -34,7 +34,8 @@ enum btDynamicsWorldType
BT_DISCRETE_DYNAMICS_WORLD=2,
BT_CONTINUOUS_DYNAMICS_WORLD=3,
BT_SOFT_RIGID_DYNAMICS_WORLD=4,
BT_GPU_DYNAMICS_WORLD=5
BT_GPU_DYNAMICS_WORLD=5,
BT_SOFT_MULTIBODY_DYNAMICS_WORLD=6
};
///The btDynamicsWorld is the interface class for several dynamics implementation, basic, discrete, parallel, and continuous etc.

View File

@ -13,6 +13,7 @@ SET(BulletSoftBody_SRCS
btSoftBodyRigidBodyCollisionConfiguration.cpp
btSoftRigidCollisionAlgorithm.cpp
btSoftRigidDynamicsWorld.cpp
btSoftMultiBodyDynamicsWorld.cpp
btSoftSoftCollisionAlgorithm.cpp
btDefaultSoftBodySolver.cpp
@ -26,6 +27,7 @@ SET(BulletSoftBody_HDRS
btSoftBodyRigidBodyCollisionConfiguration.h
btSoftRigidCollisionAlgorithm.h
btSoftRigidDynamicsWorld.h
btSoftMultiBodyDynamicsWorld.h
btSoftSoftCollisionAlgorithm.h
btSparseSDF.h

View File

@ -0,0 +1,367 @@
/*
Bullet Continuous Collision Detection and Physics Library
Copyright (c) 2003-2006 Erwin Coumans http://continuousphysics.com/Bullet/
This software is provided 'as-is', without any express or implied warranty.
In no event will the authors be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it freely,
subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "btSoftMultiBodyDynamicsWorld.h"
#include "LinearMath/btQuickprof.h"
//softbody & helpers
#include "BulletSoftBody/btSoftBody.h"
#include "BulletSoftBody/btSoftBodyHelpers.h"
#include "BulletSoftBody/btSoftBodySolvers.h"
#include "BulletSoftBody/btDefaultSoftBodySolver.h"
#include "LinearMath/btSerializer.h"
btSoftMultiBodyDynamicsWorld::btSoftMultiBodyDynamicsWorld(
btDispatcher* dispatcher,
btBroadphaseInterface* pairCache,
btMultiBodyConstraintSolver* constraintSolver,
btCollisionConfiguration* collisionConfiguration,
btSoftBodySolver *softBodySolver ) :
btMultiBodyDynamicsWorld(dispatcher,pairCache,constraintSolver,collisionConfiguration),
m_softBodySolver( softBodySolver ),
m_ownsSolver(false)
{
if( !m_softBodySolver )
{
void* ptr = btAlignedAlloc(sizeof(btDefaultSoftBodySolver),16);
m_softBodySolver = new(ptr) btDefaultSoftBodySolver();
m_ownsSolver = true;
}
m_drawFlags = fDrawFlags::Std;
m_drawNodeTree = true;
m_drawFaceTree = false;
m_drawClusterTree = false;
m_sbi.m_broadphase = pairCache;
m_sbi.m_dispatcher = dispatcher;
m_sbi.m_sparsesdf.Initialize();
m_sbi.m_sparsesdf.Reset();
m_sbi.air_density = (btScalar)1.2;
m_sbi.water_density = 0;
m_sbi.water_offset = 0;
m_sbi.water_normal = btVector3(0,0,0);
m_sbi.m_gravity.setValue(0,-10,0);
m_sbi.m_sparsesdf.Initialize();
}
btSoftMultiBodyDynamicsWorld::~btSoftMultiBodyDynamicsWorld()
{
if (m_ownsSolver)
{
m_softBodySolver->~btSoftBodySolver();
btAlignedFree(m_softBodySolver);
}
}
void btSoftMultiBodyDynamicsWorld::predictUnconstraintMotion(btScalar timeStep)
{
btDiscreteDynamicsWorld::predictUnconstraintMotion( timeStep );
{
BT_PROFILE("predictUnconstraintMotionSoftBody");
m_softBodySolver->predictMotion( float(timeStep) );
}
}
void btSoftMultiBodyDynamicsWorld::internalSingleStepSimulation( btScalar timeStep )
{
// Let the solver grab the soft bodies and if necessary optimize for it
m_softBodySolver->optimize( getSoftBodyArray() );
if( !m_softBodySolver->checkInitialized() )
{
btAssert( "Solver initialization failed\n" );
}
btDiscreteDynamicsWorld::internalSingleStepSimulation( timeStep );
///solve soft bodies constraints
solveSoftBodiesConstraints( timeStep );
//self collisions
for ( int i=0;i<m_softBodies.size();i++)
{
btSoftBody* psb=(btSoftBody*)m_softBodies[i];
psb->defaultCollisionHandler(psb);
}
///update soft bodies
m_softBodySolver->updateSoftBodies( );
// End solver-wise simulation step
// ///////////////////////////////
}
void btSoftMultiBodyDynamicsWorld::solveSoftBodiesConstraints( btScalar timeStep )
{
BT_PROFILE("solveSoftConstraints");
if(m_softBodies.size())
{
btSoftBody::solveClusters(m_softBodies);
}
// Solve constraints solver-wise
m_softBodySolver->solveConstraints( timeStep * m_softBodySolver->getTimeScale() );
}
void btSoftMultiBodyDynamicsWorld::addSoftBody(btSoftBody* body,short int collisionFilterGroup,short int collisionFilterMask)
{
m_softBodies.push_back(body);
// Set the soft body solver that will deal with this body
// to be the world's solver
body->setSoftBodySolver( m_softBodySolver );
btCollisionWorld::addCollisionObject(body,
collisionFilterGroup,
collisionFilterMask);
}
void btSoftMultiBodyDynamicsWorld::removeSoftBody(btSoftBody* body)
{
m_softBodies.remove(body);
btCollisionWorld::removeCollisionObject(body);
}
void btSoftMultiBodyDynamicsWorld::removeCollisionObject(btCollisionObject* collisionObject)
{
btSoftBody* body = btSoftBody::upcast(collisionObject);
if (body)
removeSoftBody(body);
else
btDiscreteDynamicsWorld::removeCollisionObject(collisionObject);
}
void btSoftMultiBodyDynamicsWorld::debugDrawWorld()
{
btDiscreteDynamicsWorld::debugDrawWorld();
if (getDebugDrawer())
{
int i;
for ( i=0;i<this->m_softBodies.size();i++)
{
btSoftBody* psb=(btSoftBody*)this->m_softBodies[i];
if (getDebugDrawer() && (getDebugDrawer()->getDebugMode() & (btIDebugDraw::DBG_DrawWireframe)))
{
btSoftBodyHelpers::DrawFrame(psb,m_debugDrawer);
btSoftBodyHelpers::Draw(psb,m_debugDrawer,m_drawFlags);
}
if (m_debugDrawer && (m_debugDrawer->getDebugMode() & btIDebugDraw::DBG_DrawAabb))
{
if(m_drawNodeTree) btSoftBodyHelpers::DrawNodeTree(psb,m_debugDrawer);
if(m_drawFaceTree) btSoftBodyHelpers::DrawFaceTree(psb,m_debugDrawer);
if(m_drawClusterTree) btSoftBodyHelpers::DrawClusterTree(psb,m_debugDrawer);
}
}
}
}
struct btSoftSingleRayCallback : public btBroadphaseRayCallback
{
btVector3 m_rayFromWorld;
btVector3 m_rayToWorld;
btTransform m_rayFromTrans;
btTransform m_rayToTrans;
btVector3 m_hitNormal;
const btSoftMultiBodyDynamicsWorld* m_world;
btCollisionWorld::RayResultCallback& m_resultCallback;
btSoftSingleRayCallback(const btVector3& rayFromWorld,const btVector3& rayToWorld,const btSoftMultiBodyDynamicsWorld* world,btCollisionWorld::RayResultCallback& resultCallback)
:m_rayFromWorld(rayFromWorld),
m_rayToWorld(rayToWorld),
m_world(world),
m_resultCallback(resultCallback)
{
m_rayFromTrans.setIdentity();
m_rayFromTrans.setOrigin(m_rayFromWorld);
m_rayToTrans.setIdentity();
m_rayToTrans.setOrigin(m_rayToWorld);
btVector3 rayDir = (rayToWorld-rayFromWorld);
rayDir.normalize ();
///what about division by zero? --> just set rayDirection[i] to INF/1e30
m_rayDirectionInverse[0] = rayDir[0] == btScalar(0.0) ? btScalar(1e30) : btScalar(1.0) / rayDir[0];
m_rayDirectionInverse[1] = rayDir[1] == btScalar(0.0) ? btScalar(1e30) : btScalar(1.0) / rayDir[1];
m_rayDirectionInverse[2] = rayDir[2] == btScalar(0.0) ? btScalar(1e30) : btScalar(1.0) / rayDir[2];
m_signs[0] = m_rayDirectionInverse[0] < 0.0;
m_signs[1] = m_rayDirectionInverse[1] < 0.0;
m_signs[2] = m_rayDirectionInverse[2] < 0.0;
m_lambda_max = rayDir.dot(m_rayToWorld-m_rayFromWorld);
}
virtual bool process(const btBroadphaseProxy* proxy)
{
///terminate further ray tests, once the closestHitFraction reached zero
if (m_resultCallback.m_closestHitFraction == btScalar(0.f))
return false;
btCollisionObject* collisionObject = (btCollisionObject*)proxy->m_clientObject;
//only perform raycast if filterMask matches
if(m_resultCallback.needsCollision(collisionObject->getBroadphaseHandle()))
{
//RigidcollisionObject* collisionObject = ctrl->GetRigidcollisionObject();
//btVector3 collisionObjectAabbMin,collisionObjectAabbMax;
#if 0
#ifdef RECALCULATE_AABB
btVector3 collisionObjectAabbMin,collisionObjectAabbMax;
collisionObject->getCollisionShape()->getAabb(collisionObject->getWorldTransform(),collisionObjectAabbMin,collisionObjectAabbMax);
#else
//getBroadphase()->getAabb(collisionObject->getBroadphaseHandle(),collisionObjectAabbMin,collisionObjectAabbMax);
const btVector3& collisionObjectAabbMin = collisionObject->getBroadphaseHandle()->m_aabbMin;
const btVector3& collisionObjectAabbMax = collisionObject->getBroadphaseHandle()->m_aabbMax;
#endif
#endif
//btScalar hitLambda = m_resultCallback.m_closestHitFraction;
//culling already done by broadphase
//if (btRayAabb(m_rayFromWorld,m_rayToWorld,collisionObjectAabbMin,collisionObjectAabbMax,hitLambda,m_hitNormal))
{
m_world->rayTestSingle(m_rayFromTrans,m_rayToTrans,
collisionObject,
collisionObject->getCollisionShape(),
collisionObject->getWorldTransform(),
m_resultCallback);
}
}
return true;
}
};
void btSoftMultiBodyDynamicsWorld::rayTest(const btVector3& rayFromWorld, const btVector3& rayToWorld, RayResultCallback& resultCallback) const
{
BT_PROFILE("rayTest");
/// use the broadphase to accelerate the search for objects, based on their aabb
/// and for each object with ray-aabb overlap, perform an exact ray test
btSoftSingleRayCallback rayCB(rayFromWorld,rayToWorld,this,resultCallback);
#ifndef USE_BRUTEFORCE_RAYBROADPHASE
m_broadphasePairCache->rayTest(rayFromWorld,rayToWorld,rayCB);
#else
for (int i=0;i<this->getNumCollisionObjects();i++)
{
rayCB.process(m_collisionObjects[i]->getBroadphaseHandle());
}
#endif //USE_BRUTEFORCE_RAYBROADPHASE
}
void btSoftMultiBodyDynamicsWorld::rayTestSingle(const btTransform& rayFromTrans,const btTransform& rayToTrans,
btCollisionObject* collisionObject,
const btCollisionShape* collisionShape,
const btTransform& colObjWorldTransform,
RayResultCallback& resultCallback)
{
if (collisionShape->isSoftBody()) {
btSoftBody* softBody = btSoftBody::upcast(collisionObject);
if (softBody) {
btSoftBody::sRayCast softResult;
if (softBody->rayTest(rayFromTrans.getOrigin(), rayToTrans.getOrigin(), softResult))
{
if (softResult.fraction<= resultCallback.m_closestHitFraction)
{
btCollisionWorld::LocalShapeInfo shapeInfo;
shapeInfo.m_shapePart = 0;
shapeInfo.m_triangleIndex = softResult.index;
// get the normal
btVector3 rayDir = rayToTrans.getOrigin() - rayFromTrans.getOrigin();
btVector3 normal=-rayDir;
normal.normalize();
if (softResult.feature == btSoftBody::eFeature::Face)
{
normal = softBody->m_faces[softResult.index].m_normal;
if (normal.dot(rayDir) > 0) {
// normal always point toward origin of the ray
normal = -normal;
}
}
btCollisionWorld::LocalRayResult rayResult
(collisionObject,
&shapeInfo,
normal,
softResult.fraction);
bool normalInWorldSpace = true;
resultCallback.addSingleResult(rayResult,normalInWorldSpace);
}
}
}
}
else {
btCollisionWorld::rayTestSingle(rayFromTrans,rayToTrans,collisionObject,collisionShape,colObjWorldTransform,resultCallback);
}
}
void btSoftMultiBodyDynamicsWorld::serializeSoftBodies(btSerializer* serializer)
{
int i;
//serialize all collision objects
for (i=0;i<m_collisionObjects.size();i++)
{
btCollisionObject* colObj = m_collisionObjects[i];
if (colObj->getInternalType() & btCollisionObject::CO_SOFT_BODY)
{
int len = colObj->calculateSerializeBufferSize();
btChunk* chunk = serializer->allocate(len,1);
const char* structType = colObj->serialize(chunk->m_oldPtr, serializer);
serializer->finalizeChunk(chunk,structType,BT_SOFTBODY_CODE,colObj);
}
}
}
void btSoftMultiBodyDynamicsWorld::serialize(btSerializer* serializer)
{
serializer->startSerialization();
serializeDynamicsWorldInfo( serializer);
serializeSoftBodies(serializer);
serializeRigidBodies(serializer);
serializeCollisionObjects(serializer);
serializer->finishSerialization();
}

View File

@ -0,0 +1,108 @@
/*
Bullet Continuous Collision Detection and Physics Library
Copyright (c) 2003-2006 Erwin Coumans http://continuousphysics.com/Bullet/
This software is provided 'as-is', without any express or implied warranty.
In no event will the authors be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it freely,
subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#ifndef BT_SOFT_MULTIBODY_DYNAMICS_WORLD_H
#define BT_SOFT_MULTIBODY_DYNAMICS_WORLD_H
#include "BulletDynamics/Dynamics/btDiscreteDynamicsWorld.h"
#include "BulletDynamics/Featherstone/btMultiBodyDynamicsWorld.h"
#include "BulletSoftBody/btSoftBody.h"
typedef btAlignedObjectArray<btSoftBody*> btSoftBodyArray;
class btSoftBodySolver;
class btSoftMultiBodyDynamicsWorld : public btMultiBodyDynamicsWorld
{
btSoftBodyArray m_softBodies;
int m_drawFlags;
bool m_drawNodeTree;
bool m_drawFaceTree;
bool m_drawClusterTree;
btSoftBodyWorldInfo m_sbi;
///Solver classes that encapsulate multiple soft bodies for solving
btSoftBodySolver *m_softBodySolver;
bool m_ownsSolver;
protected:
virtual void predictUnconstraintMotion(btScalar timeStep);
virtual void internalSingleStepSimulation( btScalar timeStep);
void solveSoftBodiesConstraints( btScalar timeStep );
void serializeSoftBodies(btSerializer* serializer);
public:
btSoftMultiBodyDynamicsWorld(btDispatcher* dispatcher,btBroadphaseInterface* pairCache,btMultiBodyConstraintSolver* constraintSolver, btCollisionConfiguration* collisionConfiguration, btSoftBodySolver *softBodySolver = 0 );
virtual ~btSoftMultiBodyDynamicsWorld();
virtual void debugDrawWorld();
void addSoftBody(btSoftBody* body,short int collisionFilterGroup=btBroadphaseProxy::DefaultFilter,short int collisionFilterMask=btBroadphaseProxy::AllFilter);
void removeSoftBody(btSoftBody* body);
///removeCollisionObject will first check if it is a rigid body, if so call removeRigidBody otherwise call btDiscreteDynamicsWorld::removeCollisionObject
virtual void removeCollisionObject(btCollisionObject* collisionObject);
int getDrawFlags() const { return(m_drawFlags); }
void setDrawFlags(int f) { m_drawFlags=f; }
btSoftBodyWorldInfo& getWorldInfo()
{
return m_sbi;
}
const btSoftBodyWorldInfo& getWorldInfo() const
{
return m_sbi;
}
virtual btDynamicsWorldType getWorldType() const
{
return BT_SOFT_MULTIBODY_DYNAMICS_WORLD;
}
btSoftBodyArray& getSoftBodyArray()
{
return m_softBodies;
}
const btSoftBodyArray& getSoftBodyArray() const
{
return m_softBodies;
}
virtual void rayTest(const btVector3& rayFromWorld, const btVector3& rayToWorld, RayResultCallback& resultCallback) const;
/// rayTestSingle performs a raycast call and calls the resultCallback. It is used internally by rayTest.
/// In a future implementation, we consider moving the ray test as a virtual method in btCollisionShape.
/// This allows more customization.
static void rayTestSingle(const btTransform& rayFromTrans,const btTransform& rayToTrans,
btCollisionObject* collisionObject,
const btCollisionShape* collisionShape,
const btTransform& colObjWorldTransform,
RayResultCallback& resultCallback);
virtual void serialize(btSerializer* serializer);
};
#endif //BT_SOFT_MULTIBODY_DYNAMICS_WORLD_H

View File

@ -13,7 +13,7 @@ INCLUDE_DIRECTORIES(
ADD_DEFINITIONS(-D_VARIADIC_MAX=10)
LINK_LIBRARIES(
BulletInverseDynamicsUtils BulletInverseDynamics Bullet3Common LinearMath gtest
BulletInverseDynamicsUtils BulletInverseDynamics Bullet3Common LinearMath gtest
)
IF (NOT WIN32)
LINK_LIBRARIES( pthread )
@ -44,7 +44,7 @@ INCLUDE_DIRECTORIES(
ADD_DEFINITIONS(-D_VARIADIC_MAX=10)
LINK_LIBRARIES(
BulletDynamics BulletCollision BulletInverseDynamicsUtils BulletInverseDynamics Bullet3Common LinearMath gtest
BulletDynamics BulletCollision BulletInverseDynamicsUtils BulletInverseDynamics Bullet3Common LinearMath gtest
)
IF (NOT WIN32)
LINK_LIBRARIES( pthread )
@ -110,7 +110,7 @@ INCLUDE_DIRECTORIES(
ADD_DEFINITIONS(-D_VARIADIC_MAX=10)
LINK_LIBRARIES(
BulletInverseDynamicsUtils BulletInverseDynamics Bullet3Common LinearMath gtest
BulletInverseDynamicsUtils BulletInverseDynamics Bullet3Common LinearMath gtest
)
IF (NOT WIN32)
LINK_LIBRARIES( pthread )

View File

@ -15,6 +15,9 @@ ADD_DEFINITIONS(-DPHYSICS_LOOP_BACK -DPHYSICS_SERVER_DIRECT -DENABLE_GTEST -D_VA
LINK_LIBRARIES(
BulletInverseDynamicsUtils BulletInverseDynamics BulletFileLoader BulletWorldImporter Bullet3Common BulletDynamics BulletCollision LinearMath gtest BussIK
)
IF (USE_SOFT_BODY_MULTI_BODY_DYNAMICS_WORLD)
LINK_LIBRARIES(BulletSoftBody)
ENDIF()
IF (NOT WIN32)
LINK_LIBRARIES( pthread )