mirror of
https://github.com/bulletphysics/bullet3
synced 2024-12-13 21:30:09 +00:00
839 lines
29 KiB
C++
839 lines
29 KiB
C++
/*
|
|
Bullet Continuous Collision Detection and Physics Library
|
|
Copyright (c) 2003-2015 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 "ConstraintDemo.h"
|
|
|
|
#include "btBulletDynamicsCommon.h"
|
|
#include "LinearMath/btIDebugDraw.h"
|
|
|
|
#include <stdio.h> //printf debugging
|
|
#include <cmath>
|
|
|
|
#include "../CommonInterfaces/CommonRigidBodyBase.h"
|
|
|
|
///AllConstraintDemo shows how to create a constraint, like Hinge or btGenericD6constraint
|
|
class AllConstraintDemo : public CommonRigidBodyBase
|
|
{
|
|
//keep track of variables to delete memory at the end
|
|
|
|
void setupEmptyDynamicsWorld();
|
|
|
|
public:
|
|
AllConstraintDemo(struct GUIHelperInterface* helper);
|
|
|
|
virtual ~AllConstraintDemo();
|
|
|
|
virtual void initPhysics();
|
|
|
|
virtual void exitPhysics();
|
|
|
|
virtual void resetCamera()
|
|
{
|
|
float dist = 27;
|
|
float pitch = -30;
|
|
float yaw = 720;
|
|
float targetPos[3] = {2, 0, -10};
|
|
m_guiHelper->resetCamera(dist, yaw, pitch, targetPos[0], targetPos[1], targetPos[2]);
|
|
}
|
|
|
|
virtual bool keyboardCallback(int key, int state);
|
|
|
|
// for cone-twist motor driving
|
|
float m_Time;
|
|
class btConeTwistConstraint* m_ctc;
|
|
};
|
|
|
|
#define ENABLE_ALL_DEMOS 1
|
|
|
|
#define CUBE_HALF_EXTENTS 1.f
|
|
|
|
#define SIMD_PI_2 ((SIMD_PI)*0.5f)
|
|
#define SIMD_PI_4 ((SIMD_PI)*0.25f)
|
|
|
|
btTransform sliderTransform;
|
|
btVector3 lowerSliderLimit = btVector3(-10, 0, 0);
|
|
btVector3 hiSliderLimit = btVector3(10, 0, 0);
|
|
|
|
btRigidBody* d6body0 = 0;
|
|
|
|
btHingeConstraint* spDoorHinge = NULL;
|
|
btHingeConstraint* spHingeDynAB = NULL;
|
|
btGeneric6DofConstraint* spSlider6Dof = NULL;
|
|
|
|
static bool s_bTestConeTwistMotor = false;
|
|
|
|
void AllConstraintDemo::setupEmptyDynamicsWorld()
|
|
{
|
|
m_collisionConfiguration = new btDefaultCollisionConfiguration();
|
|
m_dispatcher = new btCollisionDispatcher(m_collisionConfiguration);
|
|
m_broadphase = new btDbvtBroadphase();
|
|
m_solver = new btSequentialImpulseConstraintSolver();
|
|
m_dynamicsWorld = new btDiscreteDynamicsWorld(m_dispatcher, m_broadphase, m_solver, m_collisionConfiguration);
|
|
}
|
|
|
|
void AllConstraintDemo::initPhysics()
|
|
{
|
|
m_guiHelper->setUpAxis(1);
|
|
|
|
m_Time = 0;
|
|
|
|
setupEmptyDynamicsWorld();
|
|
|
|
m_guiHelper->createPhysicsDebugDrawer(m_dynamicsWorld);
|
|
|
|
//btCollisionShape* groundShape = new btBoxShape(btVector3(btScalar(50.),btScalar(40.),btScalar(50.)));
|
|
btCollisionShape* groundShape = new btStaticPlaneShape(btVector3(0, 1, 0), 40);
|
|
|
|
m_collisionShapes.push_back(groundShape);
|
|
btTransform groundTransform;
|
|
groundTransform.setIdentity();
|
|
groundTransform.setOrigin(btVector3(0, -56, 0));
|
|
btRigidBody* groundBody;
|
|
groundBody = createRigidBody(0, groundTransform, groundShape);
|
|
|
|
btCollisionShape* shape = new btBoxShape(btVector3(CUBE_HALF_EXTENTS, CUBE_HALF_EXTENTS, CUBE_HALF_EXTENTS));
|
|
m_collisionShapes.push_back(shape);
|
|
btTransform trans;
|
|
trans.setIdentity();
|
|
trans.setOrigin(btVector3(0, 20, 0));
|
|
|
|
float mass = 1.f;
|
|
|
|
#if ENABLE_ALL_DEMOS
|
|
///gear constraint demo
|
|
|
|
#define THETA SIMD_PI / 4.f
|
|
#define L_1 (2 - std::tan(THETA))
|
|
#define L_2 (1 / std::cos(THETA))
|
|
#define RATIO L_2 / L_1
|
|
|
|
btRigidBody* bodyA = 0;
|
|
btRigidBody* bodyB = 0;
|
|
|
|
{
|
|
btCollisionShape* cylA = new btCylinderShape(btVector3(0.2, 0.25, 0.2));
|
|
btCollisionShape* cylB = new btCylinderShape(btVector3(L_1, 0.025, L_1));
|
|
btCompoundShape* cyl0 = new btCompoundShape();
|
|
cyl0->addChildShape(btTransform::getIdentity(), cylA);
|
|
cyl0->addChildShape(btTransform::getIdentity(), cylB);
|
|
|
|
btScalar mass = 6.28;
|
|
btVector3 localInertia;
|
|
cyl0->calculateLocalInertia(mass, localInertia);
|
|
btRigidBody::btRigidBodyConstructionInfo ci(mass, 0, cyl0, localInertia);
|
|
ci.m_startWorldTransform.setOrigin(btVector3(-8, 1, -8));
|
|
|
|
btRigidBody* body = new btRigidBody(ci); //1,0,cyl0,localInertia);
|
|
m_dynamicsWorld->addRigidBody(body);
|
|
body->setLinearFactor(btVector3(0, 0, 0));
|
|
body->setAngularFactor(btVector3(0, 1, 0));
|
|
bodyA = body;
|
|
}
|
|
|
|
{
|
|
btCollisionShape* cylA = new btCylinderShape(btVector3(0.2, 0.26, 0.2));
|
|
btCollisionShape* cylB = new btCylinderShape(btVector3(L_2, 0.025, L_2));
|
|
btCompoundShape* cyl0 = new btCompoundShape();
|
|
cyl0->addChildShape(btTransform::getIdentity(), cylA);
|
|
cyl0->addChildShape(btTransform::getIdentity(), cylB);
|
|
|
|
btScalar mass = 6.28;
|
|
btVector3 localInertia;
|
|
cyl0->calculateLocalInertia(mass, localInertia);
|
|
btRigidBody::btRigidBodyConstructionInfo ci(mass, 0, cyl0, localInertia);
|
|
ci.m_startWorldTransform.setOrigin(btVector3(-10, 2, -8));
|
|
|
|
btQuaternion orn(btVector3(0, 0, 1), -THETA);
|
|
ci.m_startWorldTransform.setRotation(orn);
|
|
|
|
btRigidBody* body = new btRigidBody(ci); //1,0,cyl0,localInertia);
|
|
body->setLinearFactor(btVector3(0, 0, 0));
|
|
btHingeConstraint* hinge = new btHingeConstraint(*body, btVector3(0, 0, 0), btVector3(0, 1, 0), true);
|
|
m_dynamicsWorld->addConstraint(hinge);
|
|
bodyB = body;
|
|
body->setAngularVelocity(btVector3(0, 3, 0));
|
|
|
|
m_dynamicsWorld->addRigidBody(body);
|
|
}
|
|
|
|
btVector3 axisA(0, 1, 0);
|
|
btVector3 axisB(0, 1, 0);
|
|
btQuaternion orn(btVector3(0, 0, 1), -THETA);
|
|
btMatrix3x3 mat(orn);
|
|
axisB = mat.getRow(1);
|
|
|
|
btGearConstraint* gear = new btGearConstraint(*bodyA, *bodyB, axisA, axisB, RATIO);
|
|
m_dynamicsWorld->addConstraint(gear, true);
|
|
|
|
#endif
|
|
|
|
#if ENABLE_ALL_DEMOS
|
|
//point to point constraint with a breaking threshold
|
|
{
|
|
trans.setIdentity();
|
|
trans.setOrigin(btVector3(1, 30, -5));
|
|
createRigidBody(mass, trans, shape);
|
|
trans.setOrigin(btVector3(0, 0, -5));
|
|
|
|
btRigidBody* body0 = createRigidBody(mass, trans, shape);
|
|
trans.setOrigin(btVector3(2 * CUBE_HALF_EXTENTS, 20, 0));
|
|
mass = 1.f;
|
|
// btRigidBody* body1 = 0;//createRigidBody( mass,trans,shape);
|
|
btVector3 pivotInA(CUBE_HALF_EXTENTS, CUBE_HALF_EXTENTS, 0);
|
|
btTypedConstraint* p2p = new btPoint2PointConstraint(*body0, pivotInA);
|
|
m_dynamicsWorld->addConstraint(p2p);
|
|
p2p->setBreakingImpulseThreshold(10.2);
|
|
p2p->setDbgDrawSize(btScalar(5.f));
|
|
}
|
|
#endif
|
|
|
|
#if ENABLE_ALL_DEMOS
|
|
//point to point constraint (ball socket)
|
|
{
|
|
btRigidBody* body0 = createRigidBody(mass, trans, shape);
|
|
trans.setOrigin(btVector3(2 * CUBE_HALF_EXTENTS, 20, 0));
|
|
|
|
mass = 1.f;
|
|
// btRigidBody* body1 = 0;//createRigidBody( mass,trans,shape);
|
|
// btRigidBody* body1 = createRigidBody( 0.0,trans,0);
|
|
//body1->setActivationState(DISABLE_DEACTIVATION);
|
|
//body1->setDamping(0.3,0.3);
|
|
|
|
btVector3 pivotInA(CUBE_HALF_EXTENTS, -CUBE_HALF_EXTENTS, -CUBE_HALF_EXTENTS);
|
|
btVector3 axisInA(0, 0, 1);
|
|
|
|
// btVector3 pivotInB = body1 ? body1->getCenterOfMassTransform().inverse()(body0->getCenterOfMassTransform()(pivotInA)) : pivotInA;
|
|
// btVector3 axisInB = body1?
|
|
// (body1->getCenterOfMassTransform().getBasis().inverse()*(body1->getCenterOfMassTransform().getBasis() * axisInA)) :
|
|
body0->getCenterOfMassTransform().getBasis() * axisInA;
|
|
|
|
#define P2P
|
|
#ifdef P2P
|
|
btTypedConstraint* p2p = new btPoint2PointConstraint(*body0, pivotInA);
|
|
//btTypedConstraint* p2p = new btPoint2PointConstraint(*body0,*body1,pivotInA,pivotInB);
|
|
//btTypedConstraint* hinge = new btHingeConstraint(*body0,*body1,pivotInA,pivotInB,axisInA,axisInB);
|
|
m_dynamicsWorld->addConstraint(p2p);
|
|
p2p->setDbgDrawSize(btScalar(5.f));
|
|
#else
|
|
btHingeConstraint* hinge = new btHingeConstraint(*body0, pivotInA, axisInA);
|
|
|
|
//use zero targetVelocity and a small maxMotorImpulse to simulate joint friction
|
|
//float targetVelocity = 0.f;
|
|
//float maxMotorImpulse = 0.01;
|
|
float targetVelocity = 1.f;
|
|
float maxMotorImpulse = 1.0f;
|
|
hinge->enableAngularMotor(true, targetVelocity, maxMotorImpulse);
|
|
m_dynamicsWorld->addConstraint(hinge);
|
|
hinge->setDbgDrawSize(btScalar(5.f));
|
|
#endif //P2P
|
|
}
|
|
#endif
|
|
|
|
#if ENABLE_ALL_DEMOS
|
|
{
|
|
btTransform trans;
|
|
trans.setIdentity();
|
|
btVector3 worldPos(-20, 0, 30);
|
|
trans.setOrigin(worldPos);
|
|
|
|
btTransform frameInA, frameInB;
|
|
frameInA = btTransform::getIdentity();
|
|
frameInB = btTransform::getIdentity();
|
|
|
|
btRigidBody* pRbA1 = createRigidBody(mass, trans, shape);
|
|
// btRigidBody* pRbA1 = createRigidBody(0.f, trans, shape);
|
|
pRbA1->setActivationState(DISABLE_DEACTIVATION);
|
|
|
|
// add dynamic rigid body B1
|
|
worldPos.setValue(-30, 0, 30);
|
|
trans.setOrigin(worldPos);
|
|
btRigidBody* pRbB1 = createRigidBody(mass, trans, shape);
|
|
// btRigidBody* pRbB1 = createRigidBody(0.f, trans, shape);
|
|
pRbB1->setActivationState(DISABLE_DEACTIVATION);
|
|
|
|
// create slider constraint between A1 and B1 and add it to world
|
|
|
|
btSliderConstraint* spSlider1 = new btSliderConstraint(*pRbA1, *pRbB1, frameInA, frameInB, true);
|
|
// spSlider1 = new btSliderConstraint(*pRbA1, *pRbB1, frameInA, frameInB, false);
|
|
spSlider1->setLowerLinLimit(-15.0F);
|
|
spSlider1->setUpperLinLimit(-5.0F);
|
|
// spSlider1->setLowerLinLimit(5.0F);
|
|
// spSlider1->setUpperLinLimit(15.0F);
|
|
// spSlider1->setLowerLinLimit(-10.0F);
|
|
// spSlider1->setUpperLinLimit(-10.0F);
|
|
|
|
spSlider1->setLowerAngLimit(-SIMD_PI / 3.0F);
|
|
spSlider1->setUpperAngLimit(SIMD_PI / 3.0F);
|
|
|
|
m_dynamicsWorld->addConstraint(spSlider1, true);
|
|
spSlider1->setDbgDrawSize(btScalar(5.f));
|
|
}
|
|
#endif
|
|
|
|
#if ENABLE_ALL_DEMOS
|
|
//create a slider, using the generic D6 constraint
|
|
{
|
|
mass = 1.f;
|
|
btVector3 sliderWorldPos(0, 10, 0);
|
|
btVector3 sliderAxis(1, 0, 0);
|
|
btScalar angle = 0.f; //SIMD_RADS_PER_DEG * 10.f;
|
|
btMatrix3x3 sliderOrientation(btQuaternion(sliderAxis, angle));
|
|
trans.setIdentity();
|
|
trans.setOrigin(sliderWorldPos);
|
|
//trans.setBasis(sliderOrientation);
|
|
sliderTransform = trans;
|
|
|
|
d6body0 = createRigidBody(mass, trans, shape);
|
|
d6body0->setActivationState(DISABLE_DEACTIVATION);
|
|
btRigidBody* fixedBody1 = createRigidBody(0, trans, 0);
|
|
m_dynamicsWorld->addRigidBody(fixedBody1);
|
|
|
|
btTransform frameInA, frameInB;
|
|
frameInA = btTransform::getIdentity();
|
|
frameInB = btTransform::getIdentity();
|
|
frameInA.setOrigin(btVector3(0., 5., 0.));
|
|
frameInB.setOrigin(btVector3(0., 5., 0.));
|
|
|
|
// bool useLinearReferenceFrameA = false;//use fixed frame B for linear llimits
|
|
bool useLinearReferenceFrameA = true; //use fixed frame A for linear llimits
|
|
spSlider6Dof = new btGeneric6DofConstraint(*fixedBody1, *d6body0, frameInA, frameInB, useLinearReferenceFrameA);
|
|
spSlider6Dof->setLinearLowerLimit(lowerSliderLimit);
|
|
spSlider6Dof->setLinearUpperLimit(hiSliderLimit);
|
|
|
|
//range should be small, otherwise singularities will 'explode' the constraint
|
|
// spSlider6Dof->setAngularLowerLimit(btVector3(-1.5,0,0));
|
|
// spSlider6Dof->setAngularUpperLimit(btVector3(1.5,0,0));
|
|
// spSlider6Dof->setAngularLowerLimit(btVector3(0,0,0));
|
|
// spSlider6Dof->setAngularUpperLimit(btVector3(0,0,0));
|
|
spSlider6Dof->setAngularLowerLimit(btVector3(-SIMD_PI, 0, 0));
|
|
spSlider6Dof->setAngularUpperLimit(btVector3(1.5, 0, 0));
|
|
|
|
spSlider6Dof->getTranslationalLimitMotor()->m_enableMotor[0] = true;
|
|
spSlider6Dof->getTranslationalLimitMotor()->m_targetVelocity[0] = -5.0f;
|
|
spSlider6Dof->getTranslationalLimitMotor()->m_maxMotorForce[0] = 6.0f;
|
|
|
|
m_dynamicsWorld->addConstraint(spSlider6Dof);
|
|
spSlider6Dof->setDbgDrawSize(btScalar(5.f));
|
|
}
|
|
#endif
|
|
#if ENABLE_ALL_DEMOS
|
|
{ // create a door using hinge constraint attached to the world
|
|
btCollisionShape* pDoorShape = new btBoxShape(btVector3(2.0f, 5.0f, 0.2f));
|
|
m_collisionShapes.push_back(pDoorShape);
|
|
btTransform doorTrans;
|
|
doorTrans.setIdentity();
|
|
doorTrans.setOrigin(btVector3(-5.0f, -2.0f, 0.0f));
|
|
btRigidBody* pDoorBody = createRigidBody(1.0, doorTrans, pDoorShape);
|
|
pDoorBody->setActivationState(DISABLE_DEACTIVATION);
|
|
const btVector3 btPivotA(10.f + 2.1f, -2.0f, 0.0f); // right next to the door slightly outside
|
|
btVector3 btAxisA(0.0f, 1.0f, 0.0f); // pointing upwards, aka Y-axis
|
|
|
|
spDoorHinge = new btHingeConstraint(*pDoorBody, btPivotA, btAxisA);
|
|
|
|
// spDoorHinge->setLimit( 0.0f, SIMD_PI_2 );
|
|
// test problem values
|
|
// spDoorHinge->setLimit( -SIMD_PI, SIMD_PI*0.8f);
|
|
|
|
// spDoorHinge->setLimit( 1.f, -1.f);
|
|
// spDoorHinge->setLimit( -SIMD_PI*0.8f, SIMD_PI);
|
|
// spDoorHinge->setLimit( -SIMD_PI*0.8f, SIMD_PI, 0.9f, 0.3f, 0.0f);
|
|
// spDoorHinge->setLimit( -SIMD_PI*0.8f, SIMD_PI, 0.9f, 0.01f, 0.0f); // "sticky limits"
|
|
spDoorHinge->setLimit(-SIMD_PI * 0.25f, SIMD_PI * 0.25f);
|
|
// spDoorHinge->setLimit( 0.0f, 0.0f );
|
|
m_dynamicsWorld->addConstraint(spDoorHinge);
|
|
spDoorHinge->setDbgDrawSize(btScalar(5.f));
|
|
|
|
//doorTrans.setOrigin(btVector3(-5.0f, 2.0f, 0.0f));
|
|
//btRigidBody* pDropBody = createRigidBody( 10.0, doorTrans, shape);
|
|
}
|
|
#endif
|
|
#if ENABLE_ALL_DEMOS
|
|
{ // create a generic 6DOF constraint
|
|
|
|
btTransform tr;
|
|
tr.setIdentity();
|
|
tr.setOrigin(btVector3(btScalar(10.), btScalar(6.), btScalar(0.)));
|
|
tr.getBasis().setEulerZYX(0, 0, 0);
|
|
// btRigidBody* pBodyA = createRigidBody( mass, tr, shape);
|
|
btRigidBody* pBodyA = createRigidBody(0.0, tr, shape);
|
|
// btRigidBody* pBodyA = createRigidBody( 0.0, tr, 0);
|
|
pBodyA->setActivationState(DISABLE_DEACTIVATION);
|
|
|
|
tr.setIdentity();
|
|
tr.setOrigin(btVector3(btScalar(0.), btScalar(6.), btScalar(0.)));
|
|
tr.getBasis().setEulerZYX(0, 0, 0);
|
|
btRigidBody* pBodyB = createRigidBody(mass, tr, shape);
|
|
// btRigidBody* pBodyB = createRigidBody(0.f, tr, shape);
|
|
pBodyB->setActivationState(DISABLE_DEACTIVATION);
|
|
|
|
btTransform frameInA, frameInB;
|
|
frameInA = btTransform::getIdentity();
|
|
frameInA.setOrigin(btVector3(btScalar(-5.), btScalar(0.), btScalar(0.)));
|
|
frameInB = btTransform::getIdentity();
|
|
frameInB.setOrigin(btVector3(btScalar(5.), btScalar(0.), btScalar(0.)));
|
|
|
|
btGeneric6DofConstraint* pGen6DOF = new btGeneric6DofConstraint(*pBodyA, *pBodyB, frameInA, frameInB, true);
|
|
// btGeneric6DofConstraint* pGen6DOF = new btGeneric6DofConstraint(*pBodyA, *pBodyB, frameInA, frameInB, false);
|
|
pGen6DOF->setLinearLowerLimit(btVector3(-10., -2., -1.));
|
|
pGen6DOF->setLinearUpperLimit(btVector3(10., 2., 1.));
|
|
// pGen6DOF->setLinearLowerLimit(btVector3(-10., 0., 0.));
|
|
// pGen6DOF->setLinearUpperLimit(btVector3(10., 0., 0.));
|
|
// pGen6DOF->setLinearLowerLimit(btVector3(0., 0., 0.));
|
|
// pGen6DOF->setLinearUpperLimit(btVector3(0., 0., 0.));
|
|
|
|
// pGen6DOF->getTranslationalLimitMotor()->m_enableMotor[0] = true;
|
|
// pGen6DOF->getTranslationalLimitMotor()->m_targetVelocity[0] = 5.0f;
|
|
// pGen6DOF->getTranslationalLimitMotor()->m_maxMotorForce[0] = 6.0f;
|
|
|
|
// pGen6DOF->setAngularLowerLimit(btVector3(0., SIMD_HALF_PI*0.9, 0.));
|
|
// pGen6DOF->setAngularUpperLimit(btVector3(0., -SIMD_HALF_PI*0.9, 0.));
|
|
// pGen6DOF->setAngularLowerLimit(btVector3(0., 0., -SIMD_HALF_PI));
|
|
// pGen6DOF->setAngularUpperLimit(btVector3(0., 0., SIMD_HALF_PI));
|
|
|
|
pGen6DOF->setAngularLowerLimit(btVector3(-SIMD_HALF_PI * 0.5f, -0.75, -SIMD_HALF_PI * 0.8f));
|
|
pGen6DOF->setAngularUpperLimit(btVector3(SIMD_HALF_PI * 0.5f, 0.75, SIMD_HALF_PI * 0.8f));
|
|
// pGen6DOF->setAngularLowerLimit(btVector3(0.f, -0.75, SIMD_HALF_PI * 0.8f));
|
|
// pGen6DOF->setAngularUpperLimit(btVector3(0.f, 0.75, -SIMD_HALF_PI * 0.8f));
|
|
// pGen6DOF->setAngularLowerLimit(btVector3(0.f, -SIMD_HALF_PI * 0.8f, SIMD_HALF_PI * 1.98f));
|
|
// pGen6DOF->setAngularUpperLimit(btVector3(0.f, SIMD_HALF_PI * 0.8f, -SIMD_HALF_PI * 1.98f));
|
|
|
|
// pGen6DOF->setAngularLowerLimit(btVector3(-0.75,-0.5, -0.5));
|
|
// pGen6DOF->setAngularUpperLimit(btVector3(0.75,0.5, 0.5));
|
|
// pGen6DOF->setAngularLowerLimit(btVector3(-0.75,0., 0.));
|
|
// pGen6DOF->setAngularUpperLimit(btVector3(0.75,0., 0.));
|
|
// pGen6DOF->setAngularLowerLimit(btVector3(0., -0.7,0.));
|
|
// pGen6DOF->setAngularUpperLimit(btVector3(0., 0.7, 0.));
|
|
// pGen6DOF->setAngularLowerLimit(btVector3(-1., 0.,0.));
|
|
// pGen6DOF->setAngularUpperLimit(btVector3(1., 0., 0.));
|
|
|
|
m_dynamicsWorld->addConstraint(pGen6DOF, true);
|
|
pGen6DOF->setDbgDrawSize(btScalar(5.f));
|
|
}
|
|
#endif
|
|
#if ENABLE_ALL_DEMOS
|
|
{ // create a ConeTwist constraint
|
|
|
|
btTransform tr;
|
|
tr.setIdentity();
|
|
tr.setOrigin(btVector3(btScalar(-10.), btScalar(5.), btScalar(0.)));
|
|
tr.getBasis().setEulerZYX(0, 0, 0);
|
|
btRigidBody* pBodyA = createRigidBody(1.0, tr, shape);
|
|
// btRigidBody* pBodyA = createRigidBody( 0.0, tr, shape);
|
|
pBodyA->setActivationState(DISABLE_DEACTIVATION);
|
|
|
|
tr.setIdentity();
|
|
tr.setOrigin(btVector3(btScalar(-10.), btScalar(-5.), btScalar(0.)));
|
|
tr.getBasis().setEulerZYX(0, 0, 0);
|
|
btRigidBody* pBodyB = createRigidBody(0.0, tr, shape);
|
|
// btRigidBody* pBodyB = createRigidBody(1.0, tr, shape);
|
|
|
|
btTransform frameInA, frameInB;
|
|
frameInA = btTransform::getIdentity();
|
|
frameInA.getBasis().setEulerZYX(0, 0, SIMD_PI_2);
|
|
frameInA.setOrigin(btVector3(btScalar(0.), btScalar(-5.), btScalar(0.)));
|
|
frameInB = btTransform::getIdentity();
|
|
frameInB.getBasis().setEulerZYX(0, 0, SIMD_PI_2);
|
|
frameInB.setOrigin(btVector3(btScalar(0.), btScalar(5.), btScalar(0.)));
|
|
|
|
m_ctc = new btConeTwistConstraint(*pBodyA, *pBodyB, frameInA, frameInB);
|
|
// m_ctc->setLimit(btScalar(SIMD_PI_4), btScalar(SIMD_PI_4), btScalar(SIMD_PI) * 0.8f);
|
|
// m_ctc->setLimit(btScalar(SIMD_PI_4*0.6f), btScalar(SIMD_PI_4), btScalar(SIMD_PI) * 0.8f, 1.0f); // soft limit == hard limit
|
|
m_ctc->setLimit(btScalar(SIMD_PI_4 * 0.6f), btScalar(SIMD_PI_4), btScalar(SIMD_PI) * 0.8f, 0.5f);
|
|
m_dynamicsWorld->addConstraint(m_ctc, true);
|
|
m_ctc->setDbgDrawSize(btScalar(5.f));
|
|
// s_bTestConeTwistMotor = true; // use only with old solver for now
|
|
s_bTestConeTwistMotor = false;
|
|
}
|
|
#endif
|
|
#if ENABLE_ALL_DEMOS
|
|
{ // Hinge connected to the world, with motor (to hinge motor with new and old constraint solver)
|
|
btTransform tr;
|
|
tr.setIdentity();
|
|
tr.setOrigin(btVector3(btScalar(0.), btScalar(0.), btScalar(0.)));
|
|
btRigidBody* pBody = createRigidBody(1.0, tr, shape);
|
|
pBody->setActivationState(DISABLE_DEACTIVATION);
|
|
const btVector3 btPivotA(10.0f, 0.0f, 0.0f);
|
|
btVector3 btAxisA(0.0f, 0.0f, 1.0f);
|
|
|
|
btHingeConstraint* pHinge = new btHingeConstraint(*pBody, btPivotA, btAxisA);
|
|
// pHinge->enableAngularMotor(true, -1.0, 0.165); // use for the old solver
|
|
pHinge->enableAngularMotor(true, -1.0f, 1.65f); // use for the new SIMD solver
|
|
m_dynamicsWorld->addConstraint(pHinge);
|
|
pHinge->setDbgDrawSize(btScalar(5.f));
|
|
}
|
|
#endif
|
|
|
|
#if ENABLE_ALL_DEMOS
|
|
{
|
|
// create a universal joint using generic 6DOF constraint
|
|
// create two rigid bodies
|
|
// static bodyA (parent) on top:
|
|
btTransform tr;
|
|
tr.setIdentity();
|
|
tr.setOrigin(btVector3(btScalar(20.), btScalar(4.), btScalar(0.)));
|
|
btRigidBody* pBodyA = createRigidBody(0.0, tr, shape);
|
|
pBodyA->setActivationState(DISABLE_DEACTIVATION);
|
|
// dynamic bodyB (child) below it :
|
|
tr.setIdentity();
|
|
tr.setOrigin(btVector3(btScalar(20.), btScalar(0.), btScalar(0.)));
|
|
btRigidBody* pBodyB = createRigidBody(1.0, tr, shape);
|
|
pBodyB->setActivationState(DISABLE_DEACTIVATION);
|
|
// add some (arbitrary) data to build constraint frames
|
|
btVector3 parentAxis(1.f, 0.f, 0.f);
|
|
btVector3 childAxis(0.f, 0.f, 1.f);
|
|
btVector3 anchor(20.f, 2.f, 0.f);
|
|
|
|
btUniversalConstraint* pUniv = new btUniversalConstraint(*pBodyA, *pBodyB, anchor, parentAxis, childAxis);
|
|
pUniv->setLowerLimit(-SIMD_HALF_PI * 0.5f, -SIMD_HALF_PI * 0.5f);
|
|
pUniv->setUpperLimit(SIMD_HALF_PI * 0.5f, SIMD_HALF_PI * 0.5f);
|
|
// add constraint to world
|
|
m_dynamicsWorld->addConstraint(pUniv, true);
|
|
// draw constraint frames and limits for debugging
|
|
pUniv->setDbgDrawSize(btScalar(5.f));
|
|
}
|
|
#endif
|
|
|
|
#if ENABLE_ALL_DEMOS
|
|
{ // create a generic 6DOF constraint with springs
|
|
|
|
btTransform tr;
|
|
tr.setIdentity();
|
|
tr.setOrigin(btVector3(btScalar(-20.), btScalar(16.), btScalar(0.)));
|
|
tr.getBasis().setEulerZYX(0, 0, 0);
|
|
btRigidBody* pBodyA = createRigidBody(0.0, tr, shape);
|
|
pBodyA->setActivationState(DISABLE_DEACTIVATION);
|
|
|
|
tr.setIdentity();
|
|
tr.setOrigin(btVector3(btScalar(-10.), btScalar(16.), btScalar(0.)));
|
|
tr.getBasis().setEulerZYX(0, 0, 0);
|
|
btRigidBody* pBodyB = createRigidBody(1.0, tr, shape);
|
|
pBodyB->setActivationState(DISABLE_DEACTIVATION);
|
|
|
|
btTransform frameInA, frameInB;
|
|
frameInA = btTransform::getIdentity();
|
|
frameInA.setOrigin(btVector3(btScalar(10.), btScalar(0.), btScalar(0.)));
|
|
frameInB = btTransform::getIdentity();
|
|
frameInB.setOrigin(btVector3(btScalar(0.), btScalar(0.), btScalar(0.)));
|
|
|
|
btGeneric6DofSpringConstraint* pGen6DOFSpring = new btGeneric6DofSpringConstraint(*pBodyA, *pBodyB, frameInA, frameInB, true);
|
|
pGen6DOFSpring->setLinearUpperLimit(btVector3(5., 0., 0.));
|
|
pGen6DOFSpring->setLinearLowerLimit(btVector3(-5., 0., 0.));
|
|
|
|
pGen6DOFSpring->setAngularLowerLimit(btVector3(0.f, 0.f, -1.5f));
|
|
pGen6DOFSpring->setAngularUpperLimit(btVector3(0.f, 0.f, 1.5f));
|
|
|
|
m_dynamicsWorld->addConstraint(pGen6DOFSpring, true);
|
|
pGen6DOFSpring->setDbgDrawSize(btScalar(5.f));
|
|
|
|
pGen6DOFSpring->enableSpring(0, true);
|
|
pGen6DOFSpring->setStiffness(0, 39.478f);
|
|
pGen6DOFSpring->setDamping(0, 0.5f);
|
|
pGen6DOFSpring->enableSpring(5, true);
|
|
pGen6DOFSpring->setStiffness(5, 39.478f);
|
|
pGen6DOFSpring->setDamping(0, 0.3f);
|
|
pGen6DOFSpring->setEquilibriumPoint();
|
|
}
|
|
#endif
|
|
#if ENABLE_ALL_DEMOS
|
|
{
|
|
// create a Hinge2 joint
|
|
// create two rigid bodies
|
|
// static bodyA (parent) on top:
|
|
btTransform tr;
|
|
tr.setIdentity();
|
|
tr.setOrigin(btVector3(btScalar(-20.), btScalar(4.), btScalar(0.)));
|
|
btRigidBody* pBodyA = createRigidBody(0.0, tr, shape);
|
|
pBodyA->setActivationState(DISABLE_DEACTIVATION);
|
|
// dynamic bodyB (child) below it :
|
|
tr.setIdentity();
|
|
tr.setOrigin(btVector3(btScalar(-20.), btScalar(0.), btScalar(0.)));
|
|
btRigidBody* pBodyB = createRigidBody(1.0, tr, shape);
|
|
pBodyB->setActivationState(DISABLE_DEACTIVATION);
|
|
// add some data to build constraint frames
|
|
btVector3 parentAxis(0.f, 1.f, 0.f);
|
|
btVector3 childAxis(1.f, 0.f, 0.f);
|
|
btVector3 anchor(-20.f, 0.f, 0.f);
|
|
btHinge2Constraint* pHinge2 = new btHinge2Constraint(*pBodyA, *pBodyB, anchor, parentAxis, childAxis);
|
|
pHinge2->setLowerLimit(-SIMD_HALF_PI * 0.5f);
|
|
pHinge2->setUpperLimit(SIMD_HALF_PI * 0.5f);
|
|
// add constraint to world
|
|
m_dynamicsWorld->addConstraint(pHinge2, true);
|
|
// draw constraint frames and limits for debugging
|
|
pHinge2->setDbgDrawSize(btScalar(5.f));
|
|
}
|
|
#endif
|
|
#if ENABLE_ALL_DEMOS
|
|
{
|
|
// create a Hinge joint between two dynamic bodies
|
|
// create two rigid bodies
|
|
// static bodyA (parent) on top:
|
|
btTransform tr;
|
|
tr.setIdentity();
|
|
tr.setOrigin(btVector3(btScalar(-20.), btScalar(-2.), btScalar(0.)));
|
|
btRigidBody* pBodyA = createRigidBody(1.0f, tr, shape);
|
|
pBodyA->setActivationState(DISABLE_DEACTIVATION);
|
|
// dynamic bodyB:
|
|
tr.setIdentity();
|
|
tr.setOrigin(btVector3(btScalar(-30.), btScalar(-2.), btScalar(0.)));
|
|
btRigidBody* pBodyB = createRigidBody(10.0, tr, shape);
|
|
pBodyB->setActivationState(DISABLE_DEACTIVATION);
|
|
// add some data to build constraint frames
|
|
btVector3 axisA(0.f, 1.f, 0.f);
|
|
btVector3 axisB(0.f, 1.f, 0.f);
|
|
btVector3 pivotA(-5.f, 0.f, 0.f);
|
|
btVector3 pivotB(5.f, 0.f, 0.f);
|
|
spHingeDynAB = new btHingeConstraint(*pBodyA, *pBodyB, pivotA, pivotB, axisA, axisB);
|
|
spHingeDynAB->setLimit(-SIMD_HALF_PI * 0.5f, SIMD_HALF_PI * 0.5f);
|
|
// add constraint to world
|
|
m_dynamicsWorld->addConstraint(spHingeDynAB, true);
|
|
// draw constraint frames and limits for debugging
|
|
spHingeDynAB->setDbgDrawSize(btScalar(5.f));
|
|
}
|
|
#endif
|
|
|
|
#if ENABLE_ALL_DEMOS
|
|
{ // 6DOF connected to the world, with motor
|
|
btTransform tr;
|
|
tr.setIdentity();
|
|
tr.setOrigin(btVector3(btScalar(10.), btScalar(-15.), btScalar(0.)));
|
|
btRigidBody* pBody = createRigidBody(1.0, tr, shape);
|
|
pBody->setActivationState(DISABLE_DEACTIVATION);
|
|
btTransform frameB;
|
|
frameB.setIdentity();
|
|
btGeneric6DofConstraint* pGen6Dof = new btGeneric6DofConstraint(*pBody, frameB, false);
|
|
m_dynamicsWorld->addConstraint(pGen6Dof);
|
|
pGen6Dof->setDbgDrawSize(btScalar(5.f));
|
|
|
|
pGen6Dof->setAngularLowerLimit(btVector3(0, 0, 0));
|
|
pGen6Dof->setAngularUpperLimit(btVector3(0, 0, 0));
|
|
pGen6Dof->setLinearLowerLimit(btVector3(-10., 0, 0));
|
|
pGen6Dof->setLinearUpperLimit(btVector3(10., 0, 0));
|
|
|
|
pGen6Dof->getTranslationalLimitMotor()->m_enableMotor[0] = true;
|
|
pGen6Dof->getTranslationalLimitMotor()->m_targetVelocity[0] = 5.0f;
|
|
pGen6Dof->getTranslationalLimitMotor()->m_maxMotorForce[0] = 6.0f;
|
|
}
|
|
#endif
|
|
|
|
m_guiHelper->autogenerateGraphicsObjects(m_dynamicsWorld);
|
|
}
|
|
|
|
void AllConstraintDemo::exitPhysics()
|
|
{
|
|
int i;
|
|
|
|
//removed/delete constraints
|
|
for (i = m_dynamicsWorld->getNumConstraints() - 1; i >= 0; i--)
|
|
{
|
|
btTypedConstraint* constraint = m_dynamicsWorld->getConstraint(i);
|
|
m_dynamicsWorld->removeConstraint(constraint);
|
|
delete constraint;
|
|
}
|
|
m_ctc = NULL;
|
|
|
|
//remove the rigidbodies from the dynamics world and delete them
|
|
for (i = m_dynamicsWorld->getNumCollisionObjects() - 1; i >= 0; i--)
|
|
{
|
|
btCollisionObject* obj = m_dynamicsWorld->getCollisionObjectArray()[i];
|
|
btRigidBody* body = btRigidBody::upcast(obj);
|
|
if (body && body->getMotionState())
|
|
{
|
|
delete body->getMotionState();
|
|
}
|
|
m_dynamicsWorld->removeCollisionObject(obj);
|
|
delete obj;
|
|
}
|
|
|
|
//delete collision shapes
|
|
for (int j = 0; j < m_collisionShapes.size(); j++)
|
|
{
|
|
btCollisionShape* shape = m_collisionShapes[j];
|
|
delete shape;
|
|
}
|
|
|
|
m_collisionShapes.clear();
|
|
|
|
//delete dynamics world
|
|
delete m_dynamicsWorld;
|
|
m_dynamicsWorld = 0;
|
|
|
|
//delete solver
|
|
delete m_solver;
|
|
m_solver = 0;
|
|
|
|
//delete broadphase
|
|
delete m_broadphase;
|
|
m_broadphase = 0;
|
|
|
|
//delete dispatcher
|
|
delete m_dispatcher;
|
|
|
|
delete m_collisionConfiguration;
|
|
}
|
|
|
|
AllConstraintDemo::AllConstraintDemo(struct GUIHelperInterface* helper)
|
|
: CommonRigidBodyBase(helper)
|
|
{
|
|
}
|
|
|
|
AllConstraintDemo::~AllConstraintDemo()
|
|
{
|
|
//cleanup in the reverse order of creation/initialization
|
|
|
|
btAssert(m_dynamicsWorld == 0);
|
|
}
|
|
|
|
#if 0
|
|
void AllConstraintDemo::clientMoveAndDisplay()
|
|
{
|
|
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
|
|
float dt = float(getDeltaTimeMicroseconds()) * 0.000001f;
|
|
//printf("dt = %f: ",dt);
|
|
|
|
// drive cone-twist motor
|
|
m_Time += 0.03f;
|
|
if (s_bTestConeTwistMotor)
|
|
{ // this works only for obsolete constraint solver for now
|
|
// build cone target
|
|
btScalar t = 1.25f*m_Time;
|
|
btVector3 axis(0,sin(t),cos(t));
|
|
axis.normalize();
|
|
btQuaternion q1(axis, 0.75f*SIMD_PI);
|
|
|
|
// build twist target
|
|
//btQuaternion q2(0,0,0);
|
|
//btQuaternion q2(btVehictor3(1,0,0), -0.3*sin(m_Time));
|
|
btQuaternion q2(btVector3(1,0,0), -1.49f*btSin(1.5f*m_Time));
|
|
|
|
// compose cone + twist and set target
|
|
q1 = q1 * q2;
|
|
m_ctc->enableMotor(true);
|
|
m_ctc->setMotorTargetInConstraintSpace(q1);
|
|
}
|
|
|
|
{
|
|
static bool once = true;
|
|
if ( m_dynamicsWorld->getDebugDrawer() && once)
|
|
{
|
|
m_dynamicsWorld->getDebugDrawer()->setDebugMode(btIDebugDraw::DBG_DrawConstraints+btIDebugDraw::DBG_DrawConstraintLimits);
|
|
once=false;
|
|
}
|
|
}
|
|
|
|
|
|
{
|
|
//during idle mode, just run 1 simulation step maximum
|
|
int maxSimSubSteps = m_idle ? 1 : 1;
|
|
if (m_idle)
|
|
dt = 1.0f/420.f;
|
|
|
|
int numSimSteps = m_dynamicsWorld->stepSimulation(dt,maxSimSubSteps);
|
|
|
|
//optional but useful: debug drawing
|
|
m_dynamicsWorld->debugDrawWorld();
|
|
|
|
bool verbose = false;
|
|
if (verbose)
|
|
{
|
|
if (!numSimSteps)
|
|
printf("Interpolated transforms\n");
|
|
else
|
|
{
|
|
if (numSimSteps > maxSimSubSteps)
|
|
{
|
|
//detect dropping frames
|
|
printf("Dropped (%i) simulation steps out of %i\n",numSimSteps - maxSimSubSteps,numSimSteps);
|
|
} else
|
|
{
|
|
printf("Simulated (%i) steps\n",numSimSteps);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
renderme();
|
|
|
|
// drawLimit();
|
|
|
|
glFlush();
|
|
swapBuffers();
|
|
}
|
|
|
|
|
|
|
|
|
|
void AllConstraintDemo::displayCallback(void) {
|
|
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
|
|
if (m_dynamicsWorld)
|
|
m_dynamicsWorld->debugDrawWorld();
|
|
|
|
// drawLimit();
|
|
|
|
renderme();
|
|
|
|
glFlush();
|
|
swapBuffers();
|
|
}
|
|
#endif
|
|
|
|
bool AllConstraintDemo::keyboardCallback(int key, int state)
|
|
{
|
|
bool handled = false;
|
|
|
|
switch (key)
|
|
{
|
|
case 'O':
|
|
{
|
|
bool offectOnOff;
|
|
if (spDoorHinge)
|
|
{
|
|
offectOnOff = spDoorHinge->getUseFrameOffset();
|
|
offectOnOff = !offectOnOff;
|
|
spDoorHinge->setUseFrameOffset(offectOnOff);
|
|
printf("DoorHinge %s frame offset\n", offectOnOff ? "uses" : "does not use");
|
|
}
|
|
if (spHingeDynAB)
|
|
{
|
|
offectOnOff = spHingeDynAB->getUseFrameOffset();
|
|
offectOnOff = !offectOnOff;
|
|
spHingeDynAB->setUseFrameOffset(offectOnOff);
|
|
printf("HingeDynAB %s frame offset\n", offectOnOff ? "uses" : "does not use");
|
|
}
|
|
if (spSlider6Dof)
|
|
{
|
|
offectOnOff = spSlider6Dof->getUseFrameOffset();
|
|
offectOnOff = !offectOnOff;
|
|
spSlider6Dof->setUseFrameOffset(offectOnOff);
|
|
printf("Slider6Dof %s frame offset\n", offectOnOff ? "uses" : "does not use");
|
|
}
|
|
}
|
|
handled = true;
|
|
break;
|
|
default:
|
|
{
|
|
}
|
|
break;
|
|
}
|
|
return handled;
|
|
}
|
|
|
|
class CommonExampleInterface* AllConstraintCreateFunc(struct CommonExampleOptions& options)
|
|
{
|
|
return new AllConstraintDemo(options.m_guiHelper);
|
|
}
|