| 1 | /* | 
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| 2 | Bullet Continuous Collision Detection and Physics Library | 
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| 3 | Copyright (c) 2003-2006 Erwin Coumans  http://continuousphysics.com/Bullet/ | 
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| 4 |  | 
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| 5 | This software is provided 'as-is', without any express or implied warranty. | 
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| 6 | In no event will the authors be held liable for any damages arising from the use of this software. | 
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| 7 | Permission is granted to anyone to use this software for any purpose, | 
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| 8 | including commercial applications, and to alter it and redistribute it freely, | 
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| 9 | subject to the following restrictions: | 
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| 10 |  | 
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| 11 | 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. | 
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| 12 | 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. | 
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| 13 | 3. This notice may not be removed or altered from any source distribution. | 
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| 14 | */ | 
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| 15 |  | 
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| 16 | //#define COMPUTE_IMPULSE_DENOM 1 | 
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| 17 | //It is not necessary (redundant) to refresh contact manifolds, this refresh has been moved to the collision algorithms. | 
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| 18 | //#define FORCE_REFESH_CONTACT_MANIFOLDS 1 | 
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| 19 |  | 
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| 20 | #include "btSequentialImpulseConstraintSolver.h" | 
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| 21 | #include "BulletCollision/NarrowPhaseCollision/btPersistentManifold.h" | 
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| 22 | #include "BulletDynamics/Dynamics/btRigidBody.h" | 
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| 23 | #include "btContactConstraint.h" | 
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| 24 | #include "btSolve2LinearConstraint.h" | 
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| 25 | #include "btContactSolverInfo.h" | 
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| 26 | #include "LinearMath/btIDebugDraw.h" | 
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| 27 | #include "btJacobianEntry.h" | 
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| 28 | #include "LinearMath/btMinMax.h" | 
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| 29 | #include "BulletDynamics/ConstraintSolver/btTypedConstraint.h" | 
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| 30 | #include <new> | 
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| 31 | #include "LinearMath/btStackAlloc.h" | 
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| 32 | #include "LinearMath/btQuickprof.h" | 
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| 33 | #include "btSolverBody.h" | 
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| 34 | #include "btSolverConstraint.h" | 
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| 35 |  | 
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| 36 |  | 
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| 37 | #include "LinearMath/btAlignedObjectArray.h" | 
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| 38 |  | 
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| 39 |  | 
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| 40 | int totalCpd = 0; | 
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| 41 |  | 
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| 42 | int     gTotalContactPoints = 0; | 
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| 43 |  | 
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| 44 | struct  btOrderIndex | 
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| 45 | { | 
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| 46 | int     m_manifoldIndex; | 
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| 47 | int     m_pointIndex; | 
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| 48 | }; | 
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| 49 |  | 
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| 50 |  | 
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| 51 |  | 
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| 52 | #define SEQUENTIAL_IMPULSE_MAX_SOLVER_POINTS 16384 | 
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| 53 | static btOrderIndex     gOrder[SEQUENTIAL_IMPULSE_MAX_SOLVER_POINTS]; | 
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| 54 |  | 
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| 55 |  | 
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| 56 | unsigned long btSequentialImpulseConstraintSolver::btRand2() | 
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| 57 | { | 
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| 58 | m_btSeed2 = (1664525L*m_btSeed2 + 1013904223L) & 0xffffffff; | 
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| 59 | return m_btSeed2; | 
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| 60 | } | 
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| 61 |  | 
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| 62 |  | 
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| 63 |  | 
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| 64 | //See ODE: adam's all-int straightforward(?) dRandInt (0..n-1) | 
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| 65 | int btSequentialImpulseConstraintSolver::btRandInt2 (int n) | 
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| 66 | { | 
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| 67 | // seems good; xor-fold and modulus | 
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| 68 | const unsigned long un = static_cast<unsigned long>(n); | 
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| 69 | unsigned long r = btRand2(); | 
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| 70 |  | 
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| 71 | // note: probably more aggressive than it needs to be -- might be | 
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| 72 | //       able to get away without one or two of the innermost branches. | 
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| 73 | if (un <= 0x00010000UL) { | 
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| 74 | r ^= (r >> 16); | 
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| 75 | if (un <= 0x00000100UL) { | 
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| 76 | r ^= (r >> 8); | 
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| 77 | if (un <= 0x00000010UL) { | 
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| 78 | r ^= (r >> 4); | 
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| 79 | if (un <= 0x00000004UL) { | 
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| 80 | r ^= (r >> 2); | 
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| 81 | if (un <= 0x00000002UL) { | 
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| 82 | r ^= (r >> 1); | 
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| 83 | } | 
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| 84 | } | 
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| 85 | } | 
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| 86 | } | 
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| 87 | } | 
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| 88 |  | 
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| 89 | return (int) (r % un); | 
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| 90 | } | 
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| 91 |  | 
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| 92 |  | 
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| 93 |  | 
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| 94 |  | 
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| 95 | bool  MyContactDestroyedCallback(void* userPersistentData); | 
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| 96 | bool  MyContactDestroyedCallback(void* userPersistentData) | 
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| 97 | { | 
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| 98 | assert (userPersistentData); | 
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| 99 | btConstraintPersistentData* cpd = (btConstraintPersistentData*)userPersistentData; | 
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| 100 | btAlignedFree(cpd); | 
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| 101 | totalCpd--; | 
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| 102 | //printf("totalCpd = %i. DELETED Ptr %x\n",totalCpd,userPersistentData); | 
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| 103 | return true; | 
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| 104 | } | 
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| 105 |  | 
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| 106 |  | 
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| 107 |  | 
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| 108 | btSequentialImpulseConstraintSolver::btSequentialImpulseConstraintSolver() | 
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| 109 | :m_btSeed2(0) | 
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| 110 | { | 
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| 111 | gContactDestroyedCallback = &MyContactDestroyedCallback; | 
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| 112 |  | 
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| 113 | //initialize default friction/contact funcs | 
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| 114 | int i,j; | 
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| 115 | for (i=0;i<MAX_CONTACT_SOLVER_TYPES;i++) | 
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| 116 | for (j=0;j<MAX_CONTACT_SOLVER_TYPES;j++) | 
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| 117 | { | 
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| 118 |  | 
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| 119 | m_contactDispatch[i][j] = resolveSingleCollision; | 
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| 120 | m_frictionDispatch[i][j] = resolveSingleFriction; | 
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| 121 | } | 
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| 122 | } | 
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| 123 |  | 
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| 124 | btSequentialImpulseConstraintSolver::~btSequentialImpulseConstraintSolver() | 
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| 125 | { | 
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| 126 |  | 
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| 127 | } | 
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| 128 |  | 
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| 129 | void    initSolverBody(btSolverBody* solverBody, btCollisionObject* collisionObject); | 
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| 130 | void    initSolverBody(btSolverBody* solverBody, btCollisionObject* collisionObject) | 
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| 131 | { | 
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| 132 | btRigidBody* rb = btRigidBody::upcast(collisionObject); | 
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| 133 | if (rb) | 
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| 134 | { | 
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| 135 | solverBody->m_angularVelocity = rb->getAngularVelocity() ; | 
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| 136 | solverBody->m_centerOfMassPosition = collisionObject->getWorldTransform().getOrigin(); | 
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| 137 | solverBody->m_friction = collisionObject->getFriction(); | 
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| 138 | solverBody->m_invMass = rb->getInvMass(); | 
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| 139 | solverBody->m_linearVelocity = rb->getLinearVelocity(); | 
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| 140 | solverBody->m_originalBody = rb; | 
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| 141 | solverBody->m_angularFactor = rb->getAngularFactor(); | 
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| 142 | } else | 
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| 143 | { | 
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| 144 | solverBody->m_angularVelocity.setValue(0,0,0); | 
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| 145 | solverBody->m_centerOfMassPosition = collisionObject->getWorldTransform().getOrigin(); | 
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| 146 | solverBody->m_friction = collisionObject->getFriction(); | 
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| 147 | solverBody->m_invMass = 0.f; | 
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| 148 | solverBody->m_linearVelocity.setValue(0,0,0); | 
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| 149 | solverBody->m_originalBody = 0; | 
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| 150 | solverBody->m_angularFactor = 1.f; | 
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| 151 | } | 
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| 152 | solverBody->m_pushVelocity.setValue(0.f,0.f,0.f); | 
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| 153 | solverBody->m_turnVelocity.setValue(0.f,0.f,0.f); | 
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| 154 | } | 
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| 155 |  | 
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| 156 |  | 
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| 157 | int             gNumSplitImpulseRecoveries = 0; | 
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| 158 |  | 
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| 159 | btScalar restitutionCurve(btScalar rel_vel, btScalar restitution); | 
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| 160 | btScalar restitutionCurve(btScalar rel_vel, btScalar restitution) | 
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| 161 | { | 
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| 162 | btScalar rest = restitution * -rel_vel; | 
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| 163 | return rest; | 
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| 164 | } | 
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| 165 |  | 
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| 166 |  | 
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| 167 | void    resolveSplitPenetrationImpulseCacheFriendly( | 
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| 168 | btSolverBody& body1, | 
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| 169 | btSolverBody& body2, | 
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| 170 | const btSolverConstraint& contactConstraint, | 
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| 171 | const btContactSolverInfo& solverInfo); | 
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| 172 |  | 
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| 173 | //SIMD_FORCE_INLINE | 
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| 174 | void    resolveSplitPenetrationImpulseCacheFriendly( | 
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| 175 | btSolverBody& body1, | 
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| 176 | btSolverBody& body2, | 
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| 177 | const btSolverConstraint& contactConstraint, | 
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| 178 | const btContactSolverInfo& solverInfo) | 
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| 179 | { | 
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| 180 | (void)solverInfo; | 
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| 181 |  | 
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| 182 | if (contactConstraint.m_penetration < solverInfo.m_splitImpulsePenetrationThreshold) | 
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| 183 | { | 
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| 184 |  | 
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| 185 | gNumSplitImpulseRecoveries++; | 
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| 186 | btScalar normalImpulse; | 
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| 187 |  | 
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| 188 | //  Optimized version of projected relative velocity, use precomputed cross products with normal | 
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| 189 | //      body1.getVelocityInLocalPoint(contactConstraint.m_rel_posA,vel1); | 
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| 190 | //      body2.getVelocityInLocalPoint(contactConstraint.m_rel_posB,vel2); | 
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| 191 | //      btVector3 vel = vel1 - vel2; | 
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| 192 | //      btScalar  rel_vel = contactConstraint.m_contactNormal.dot(vel); | 
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| 193 |  | 
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| 194 | btScalar rel_vel; | 
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| 195 | btScalar vel1Dotn = contactConstraint.m_contactNormal.dot(body1.m_pushVelocity) | 
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| 196 | + contactConstraint.m_relpos1CrossNormal.dot(body1.m_turnVelocity); | 
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| 197 | btScalar vel2Dotn = contactConstraint.m_contactNormal.dot(body2.m_pushVelocity) | 
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| 198 | + contactConstraint.m_relpos2CrossNormal.dot(body2.m_turnVelocity); | 
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| 199 |  | 
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| 200 | rel_vel = vel1Dotn-vel2Dotn; | 
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| 201 |  | 
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| 202 |  | 
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| 203 | btScalar positionalError = -contactConstraint.m_penetration * solverInfo.m_erp2/solverInfo.m_timeStep; | 
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| 204 | //      btScalar positionalError = contactConstraint.m_penetration; | 
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| 205 |  | 
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| 206 | btScalar velocityError = contactConstraint.m_restitution - rel_vel;// * damping; | 
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| 207 |  | 
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| 208 | btScalar penetrationImpulse = positionalError * contactConstraint.m_jacDiagABInv; | 
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| 209 | btScalar        velocityImpulse = velocityError * contactConstraint.m_jacDiagABInv; | 
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| 210 | normalImpulse = penetrationImpulse+velocityImpulse; | 
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| 211 |  | 
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| 212 | // See Erin Catto's GDC 2006 paper: Clamp the accumulated impulse | 
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| 213 | btScalar oldNormalImpulse = contactConstraint.m_appliedPushImpulse; | 
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| 214 | btScalar sum = oldNormalImpulse + normalImpulse; | 
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| 215 | contactConstraint.m_appliedPushImpulse = btScalar(0.) > sum ? btScalar(0.): sum; | 
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| 216 |  | 
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| 217 | normalImpulse = contactConstraint.m_appliedPushImpulse - oldNormalImpulse; | 
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| 218 |  | 
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| 219 | body1.internalApplyPushImpulse(contactConstraint.m_contactNormal*body1.m_invMass, contactConstraint.m_angularComponentA,normalImpulse); | 
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| 220 |  | 
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| 221 | body2.internalApplyPushImpulse(contactConstraint.m_contactNormal*body2.m_invMass, contactConstraint.m_angularComponentB,-normalImpulse); | 
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| 222 |  | 
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| 223 | } | 
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| 224 |  | 
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| 225 | } | 
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| 226 |  | 
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| 227 |  | 
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| 228 | //velocity + friction | 
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| 229 | //response  between two dynamic objects with friction | 
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| 230 |  | 
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| 231 | btScalar resolveSingleCollisionCombinedCacheFriendly( | 
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| 232 | btSolverBody& body1, | 
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| 233 | btSolverBody& body2, | 
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| 234 | const btSolverConstraint& contactConstraint, | 
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| 235 | const btContactSolverInfo& solverInfo); | 
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| 236 |  | 
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| 237 | //SIMD_FORCE_INLINE | 
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| 238 | btScalar resolveSingleCollisionCombinedCacheFriendly( | 
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| 239 | btSolverBody& body1, | 
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| 240 | btSolverBody& body2, | 
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| 241 | const btSolverConstraint& contactConstraint, | 
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| 242 | const btContactSolverInfo& solverInfo) | 
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| 243 | { | 
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| 244 | (void)solverInfo; | 
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| 245 |  | 
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| 246 | btScalar normalImpulse; | 
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| 247 |  | 
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| 248 | { | 
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| 249 |  | 
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| 250 |  | 
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| 251 | //  Optimized version of projected relative velocity, use precomputed cross products with normal | 
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| 252 | //      body1.getVelocityInLocalPoint(contactConstraint.m_rel_posA,vel1); | 
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| 253 | //      body2.getVelocityInLocalPoint(contactConstraint.m_rel_posB,vel2); | 
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| 254 | //      btVector3 vel = vel1 - vel2; | 
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| 255 | //      btScalar  rel_vel = contactConstraint.m_contactNormal.dot(vel); | 
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| 256 |  | 
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| 257 | btScalar rel_vel; | 
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| 258 | btScalar vel1Dotn = contactConstraint.m_contactNormal.dot(body1.m_linearVelocity) | 
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| 259 | + contactConstraint.m_relpos1CrossNormal.dot(body1.m_angularVelocity); | 
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| 260 | btScalar vel2Dotn = contactConstraint.m_contactNormal.dot(body2.m_linearVelocity) | 
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| 261 | + contactConstraint.m_relpos2CrossNormal.dot(body2.m_angularVelocity); | 
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| 262 |  | 
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| 263 | rel_vel = vel1Dotn-vel2Dotn; | 
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| 264 |  | 
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| 265 | btScalar positionalError = 0.f; | 
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| 266 | if (!solverInfo.m_splitImpulse || (contactConstraint.m_penetration > solverInfo.m_splitImpulsePenetrationThreshold)) | 
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| 267 | { | 
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| 268 | positionalError = -contactConstraint.m_penetration * solverInfo.m_erp/solverInfo.m_timeStep; | 
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| 269 | } | 
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| 270 |  | 
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| 271 | btScalar velocityError = contactConstraint.m_restitution - rel_vel;// * damping; | 
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| 272 |  | 
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| 273 | btScalar penetrationImpulse = positionalError * contactConstraint.m_jacDiagABInv; | 
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| 274 | btScalar        velocityImpulse = velocityError * contactConstraint.m_jacDiagABInv; | 
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| 275 | normalImpulse = penetrationImpulse+velocityImpulse; | 
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| 276 |  | 
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| 277 |  | 
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| 278 | // See Erin Catto's GDC 2006 paper: Clamp the accumulated impulse | 
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| 279 | btScalar oldNormalImpulse = contactConstraint.m_appliedImpulse; | 
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| 280 | btScalar sum = oldNormalImpulse + normalImpulse; | 
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| 281 | contactConstraint.m_appliedImpulse = btScalar(0.) > sum ? btScalar(0.): sum; | 
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| 282 |  | 
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| 283 | normalImpulse = contactConstraint.m_appliedImpulse - oldNormalImpulse; | 
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| 284 |  | 
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| 285 | body1.internalApplyImpulse(contactConstraint.m_contactNormal*body1.m_invMass, | 
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| 286 | contactConstraint.m_angularComponentA,normalImpulse); | 
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| 287 |  | 
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| 288 | body2.internalApplyImpulse(contactConstraint.m_contactNormal*body2.m_invMass, | 
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| 289 | contactConstraint.m_angularComponentB,-normalImpulse); | 
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| 290 | } | 
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| 291 |  | 
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| 292 | return normalImpulse; | 
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| 293 | } | 
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| 294 |  | 
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| 295 |  | 
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| 296 | #ifndef NO_FRICTION_TANGENTIALS | 
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| 297 |  | 
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| 298 | btScalar resolveSingleFrictionCacheFriendly( | 
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| 299 | btSolverBody& body1, | 
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| 300 | btSolverBody& body2, | 
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| 301 | const btSolverConstraint& contactConstraint, | 
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| 302 | const btContactSolverInfo& solverInfo, | 
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| 303 | btScalar appliedNormalImpulse); | 
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| 304 |  | 
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| 305 | //SIMD_FORCE_INLINE | 
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| 306 | btScalar resolveSingleFrictionCacheFriendly( | 
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| 307 | btSolverBody& body1, | 
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| 308 | btSolverBody& body2, | 
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| 309 | const btSolverConstraint& contactConstraint, | 
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| 310 | const btContactSolverInfo& solverInfo, | 
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| 311 | btScalar appliedNormalImpulse) | 
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| 312 | { | 
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| 313 | (void)solverInfo; | 
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| 314 |  | 
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| 315 |  | 
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| 316 | const btScalar combinedFriction = contactConstraint.m_friction; | 
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| 317 |  | 
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| 318 | const btScalar limit = appliedNormalImpulse * combinedFriction; | 
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| 319 |  | 
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| 320 | if (appliedNormalImpulse>btScalar(0.)) | 
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| 321 | //friction | 
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| 322 | { | 
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| 323 |  | 
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| 324 | btScalar j1; | 
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| 325 | { | 
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| 326 |  | 
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| 327 | btScalar rel_vel; | 
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| 328 | const btScalar vel1Dotn = contactConstraint.m_contactNormal.dot(body1.m_linearVelocity) | 
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| 329 | + contactConstraint.m_relpos1CrossNormal.dot(body1.m_angularVelocity); | 
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| 330 | const btScalar vel2Dotn = contactConstraint.m_contactNormal.dot(body2.m_linearVelocity) | 
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| 331 | + contactConstraint.m_relpos2CrossNormal.dot(body2.m_angularVelocity); | 
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| 332 | rel_vel = vel1Dotn-vel2Dotn; | 
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| 333 |  | 
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| 334 | // calculate j that moves us to zero relative velocity | 
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| 335 | j1 = -rel_vel * contactConstraint.m_jacDiagABInv; | 
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| 336 | #define CLAMP_ACCUMULATED_FRICTION_IMPULSE 1 | 
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| 337 | #ifdef CLAMP_ACCUMULATED_FRICTION_IMPULSE | 
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| 338 | btScalar oldTangentImpulse = contactConstraint.m_appliedImpulse; | 
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| 339 | contactConstraint.m_appliedImpulse = oldTangentImpulse + j1; | 
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| 340 |  | 
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| 341 | if (limit < contactConstraint.m_appliedImpulse) | 
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| 342 | { | 
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| 343 | contactConstraint.m_appliedImpulse = limit; | 
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| 344 | } else | 
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| 345 | { | 
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| 346 | if (contactConstraint.m_appliedImpulse < -limit) | 
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| 347 | contactConstraint.m_appliedImpulse = -limit; | 
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| 348 | } | 
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| 349 | j1 = contactConstraint.m_appliedImpulse - oldTangentImpulse; | 
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| 350 | #else | 
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| 351 | if (limit < j1) | 
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| 352 | { | 
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| 353 | j1 = limit; | 
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| 354 | } else | 
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| 355 | { | 
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| 356 | if (j1 < -limit) | 
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| 357 | j1 = -limit; | 
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| 358 | } | 
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| 359 |  | 
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| 360 | #endif //CLAMP_ACCUMULATED_FRICTION_IMPULSE | 
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| 361 |  | 
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| 362 | //GEN_set_min(contactConstraint.m_appliedImpulse, limit); | 
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| 363 | //GEN_set_max(contactConstraint.m_appliedImpulse, -limit); | 
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| 364 |  | 
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| 365 |  | 
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| 366 |  | 
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| 367 | } | 
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| 368 |  | 
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| 369 | body1.internalApplyImpulse(contactConstraint.m_contactNormal*body1.m_invMass,contactConstraint.m_angularComponentA,j1); | 
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| 370 |  | 
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| 371 | body2.internalApplyImpulse(contactConstraint.m_contactNormal*body2.m_invMass,contactConstraint.m_angularComponentB,-j1); | 
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| 372 |  | 
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| 373 | } | 
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| 374 | return 0.f; | 
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| 375 | } | 
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| 376 |  | 
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| 377 |  | 
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| 378 | #else | 
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| 379 |  | 
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| 380 | //velocity + friction | 
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| 381 | //response  between two dynamic objects with friction | 
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| 382 | btScalar resolveSingleFrictionCacheFriendly( | 
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| 383 | btSolverBody& body1, | 
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| 384 | btSolverBody& body2, | 
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| 385 | btSolverConstraint& contactConstraint, | 
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| 386 | const btContactSolverInfo& solverInfo) | 
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| 387 | { | 
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| 388 |  | 
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| 389 | btVector3 vel1; | 
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| 390 | btVector3 vel2; | 
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| 391 | btScalar normalImpulse(0.f); | 
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| 392 |  | 
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| 393 | { | 
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| 394 | const btVector3& normal = contactConstraint.m_contactNormal; | 
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| 395 | if (contactConstraint.m_penetration < 0.f) | 
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| 396 | return 0.f; | 
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| 397 |  | 
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| 398 |  | 
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| 399 | body1.getVelocityInLocalPoint(contactConstraint.m_rel_posA,vel1); | 
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| 400 | body2.getVelocityInLocalPoint(contactConstraint.m_rel_posB,vel2); | 
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| 401 | btVector3 vel = vel1 - vel2; | 
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| 402 | btScalar rel_vel; | 
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| 403 | rel_vel = normal.dot(vel); | 
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| 404 |  | 
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| 405 | btVector3 lat_vel = vel - normal * rel_vel; | 
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| 406 | btScalar lat_rel_vel = lat_vel.length2(); | 
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| 407 |  | 
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| 408 | btScalar combinedFriction = contactConstraint.m_friction; | 
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| 409 | const btVector3& rel_pos1 = contactConstraint.m_rel_posA; | 
|---|
| 410 | const btVector3& rel_pos2 = contactConstraint.m_rel_posB; | 
|---|
| 411 |  | 
|---|
| 412 |  | 
|---|
| 413 | if (lat_rel_vel > SIMD_EPSILON*SIMD_EPSILON) | 
|---|
| 414 | { | 
|---|
| 415 | lat_rel_vel = btSqrt(lat_rel_vel); | 
|---|
| 416 |  | 
|---|
| 417 | lat_vel /= lat_rel_vel; | 
|---|
| 418 | btVector3 temp1 = body1.m_invInertiaWorld * rel_pos1.cross(lat_vel); | 
|---|
| 419 | btVector3 temp2 = body2.m_invInertiaWorld * rel_pos2.cross(lat_vel); | 
|---|
| 420 | btScalar friction_impulse = lat_rel_vel / | 
|---|
| 421 | (body1.m_invMass + body2.m_invMass + lat_vel.dot(temp1.cross(rel_pos1) + temp2.cross(rel_pos2))); | 
|---|
| 422 | btScalar normal_impulse = contactConstraint.m_appliedImpulse * combinedFriction; | 
|---|
| 423 |  | 
|---|
| 424 | GEN_set_min(friction_impulse, normal_impulse); | 
|---|
| 425 | GEN_set_max(friction_impulse, -normal_impulse); | 
|---|
| 426 | body1.applyImpulse(lat_vel * -friction_impulse, rel_pos1); | 
|---|
| 427 | body2.applyImpulse(lat_vel * friction_impulse, rel_pos2); | 
|---|
| 428 | } | 
|---|
| 429 | } | 
|---|
| 430 |  | 
|---|
| 431 | return normalImpulse; | 
|---|
| 432 | } | 
|---|
| 433 |  | 
|---|
| 434 | #endif //NO_FRICTION_TANGENTIALS | 
|---|
| 435 |  | 
|---|
| 436 |  | 
|---|
| 437 |  | 
|---|
| 438 |  | 
|---|
| 439 |  | 
|---|
| 440 | btSolverConstraint&     btSequentialImpulseConstraintSolver::addFrictionConstraint(const btVector3& normalAxis,int solverBodyIdA,int solverBodyIdB,int frictionIndex,btManifoldPoint& cp,const btVector3& rel_pos1,const btVector3& rel_pos2,btCollisionObject* colObj0,btCollisionObject* colObj1, btScalar relaxation) | 
|---|
| 441 | { | 
|---|
| 442 |  | 
|---|
| 443 | btRigidBody* body0=btRigidBody::upcast(colObj0); | 
|---|
| 444 | btRigidBody* body1=btRigidBody::upcast(colObj1); | 
|---|
| 445 |  | 
|---|
| 446 | btSolverConstraint& solverConstraint = m_tmpSolverFrictionConstraintPool.expand(); | 
|---|
| 447 | solverConstraint.m_contactNormal = normalAxis; | 
|---|
| 448 |  | 
|---|
| 449 | solverConstraint.m_solverBodyIdA = solverBodyIdA; | 
|---|
| 450 | solverConstraint.m_solverBodyIdB = solverBodyIdB; | 
|---|
| 451 | solverConstraint.m_constraintType = btSolverConstraint::BT_SOLVER_FRICTION_1D; | 
|---|
| 452 | solverConstraint.m_frictionIndex = frictionIndex; | 
|---|
| 453 |  | 
|---|
| 454 | solverConstraint.m_friction = cp.m_combinedFriction; | 
|---|
| 455 | solverConstraint.m_originalContactPoint = 0; | 
|---|
| 456 |  | 
|---|
| 457 | solverConstraint.m_appliedImpulse = btScalar(0.); | 
|---|
| 458 | solverConstraint.m_appliedPushImpulse = 0.f; | 
|---|
| 459 | solverConstraint.m_penetration = 0.f; | 
|---|
| 460 | { | 
|---|
| 461 | btVector3 ftorqueAxis1 = rel_pos1.cross(solverConstraint.m_contactNormal); | 
|---|
| 462 | solverConstraint.m_relpos1CrossNormal = ftorqueAxis1; | 
|---|
| 463 | solverConstraint.m_angularComponentA = body0 ? body0->getInvInertiaTensorWorld()*ftorqueAxis1 : btVector3(0,0,0); | 
|---|
| 464 | } | 
|---|
| 465 | { | 
|---|
| 466 | btVector3 ftorqueAxis1 = rel_pos2.cross(solverConstraint.m_contactNormal); | 
|---|
| 467 | solverConstraint.m_relpos2CrossNormal = ftorqueAxis1; | 
|---|
| 468 | solverConstraint.m_angularComponentB = body1 ? body1->getInvInertiaTensorWorld()*ftorqueAxis1 : btVector3(0,0,0); | 
|---|
| 469 | } | 
|---|
| 470 |  | 
|---|
| 471 | #ifdef COMPUTE_IMPULSE_DENOM | 
|---|
| 472 | btScalar denom0 = rb0->computeImpulseDenominator(pos1,solverConstraint.m_contactNormal); | 
|---|
| 473 | btScalar denom1 = rb1->computeImpulseDenominator(pos2,solverConstraint.m_contactNormal); | 
|---|
| 474 | #else | 
|---|
| 475 | btVector3 vec; | 
|---|
| 476 | btScalar denom0 = 0.f; | 
|---|
| 477 | btScalar denom1 = 0.f; | 
|---|
| 478 | if (body0) | 
|---|
| 479 | { | 
|---|
| 480 | vec = ( solverConstraint.m_angularComponentA).cross(rel_pos1); | 
|---|
| 481 | denom0 = body0->getInvMass() + normalAxis.dot(vec); | 
|---|
| 482 | } | 
|---|
| 483 | if (body1) | 
|---|
| 484 | { | 
|---|
| 485 | vec = ( solverConstraint.m_angularComponentB).cross(rel_pos2); | 
|---|
| 486 | denom1 = body1->getInvMass() + normalAxis.dot(vec); | 
|---|
| 487 | } | 
|---|
| 488 |  | 
|---|
| 489 |  | 
|---|
| 490 | #endif //COMPUTE_IMPULSE_DENOM | 
|---|
| 491 | btScalar denom = relaxation/(denom0+denom1); | 
|---|
| 492 | solverConstraint.m_jacDiagABInv = denom; | 
|---|
| 493 |  | 
|---|
| 494 | return solverConstraint; | 
|---|
| 495 | } | 
|---|
| 496 |  | 
|---|
| 497 |  | 
|---|
| 498 |  | 
|---|
| 499 | btScalar btSequentialImpulseConstraintSolver::solveGroupCacheFriendlySetup(btCollisionObject** /*bodies */,int /*numBodies */,btPersistentManifold** manifoldPtr, int numManifolds,btTypedConstraint** constraints,int numConstraints,const btContactSolverInfo& infoGlobal,btIDebugDraw* debugDrawer,btStackAlloc* stackAlloc) | 
|---|
| 500 | { | 
|---|
| 501 | BT_PROFILE("solveGroupCacheFriendlySetup"); | 
|---|
| 502 | (void)stackAlloc; | 
|---|
| 503 | (void)debugDrawer; | 
|---|
| 504 |  | 
|---|
| 505 |  | 
|---|
| 506 | if (!(numConstraints + numManifolds)) | 
|---|
| 507 | { | 
|---|
| 508 | //              printf("empty\n"); | 
|---|
| 509 | return 0.f; | 
|---|
| 510 | } | 
|---|
| 511 | btPersistentManifold* manifold = 0; | 
|---|
| 512 | btCollisionObject* colObj0=0,*colObj1=0; | 
|---|
| 513 |  | 
|---|
| 514 | //btRigidBody* rb0=0,*rb1=0; | 
|---|
| 515 |  | 
|---|
| 516 |  | 
|---|
| 517 | #ifdef FORCE_REFESH_CONTACT_MANIFOLDS | 
|---|
| 518 |  | 
|---|
| 519 | BEGIN_PROFILE("refreshManifolds"); | 
|---|
| 520 |  | 
|---|
| 521 | int i; | 
|---|
| 522 |  | 
|---|
| 523 |  | 
|---|
| 524 |  | 
|---|
| 525 | for (i=0;i<numManifolds;i++) | 
|---|
| 526 | { | 
|---|
| 527 | manifold = manifoldPtr[i]; | 
|---|
| 528 | rb1 = (btRigidBody*)manifold->getBody1(); | 
|---|
| 529 | rb0 = (btRigidBody*)manifold->getBody0(); | 
|---|
| 530 |  | 
|---|
| 531 | manifold->refreshContactPoints(rb0->getCenterOfMassTransform(),rb1->getCenterOfMassTransform()); | 
|---|
| 532 |  | 
|---|
| 533 | } | 
|---|
| 534 |  | 
|---|
| 535 | END_PROFILE("refreshManifolds"); | 
|---|
| 536 | #endif //FORCE_REFESH_CONTACT_MANIFOLDS | 
|---|
| 537 |  | 
|---|
| 538 |  | 
|---|
| 539 |  | 
|---|
| 540 |  | 
|---|
| 541 |  | 
|---|
| 542 | //int sizeofSB = sizeof(btSolverBody); | 
|---|
| 543 | //int sizeofSC = sizeof(btSolverConstraint); | 
|---|
| 544 |  | 
|---|
| 545 |  | 
|---|
| 546 | //if (1) | 
|---|
| 547 | { | 
|---|
| 548 | //if m_stackAlloc, try to pack bodies/constraints to speed up solving | 
|---|
| 549 | //              btBlock*                                        sablock; | 
|---|
| 550 | //              sablock = stackAlloc->beginBlock(); | 
|---|
| 551 |  | 
|---|
| 552 | //      int memsize = 16; | 
|---|
| 553 | //              unsigned char* stackMemory = stackAlloc->allocate(memsize); | 
|---|
| 554 |  | 
|---|
| 555 |  | 
|---|
| 556 | //todo: use stack allocator for this temp memory | 
|---|
| 557 | //              int minReservation = numManifolds*2; | 
|---|
| 558 |  | 
|---|
| 559 | //m_tmpSolverBodyPool.reserve(minReservation); | 
|---|
| 560 |  | 
|---|
| 561 | //don't convert all bodies, only the one we need so solver the constraints | 
|---|
| 562 | /* | 
|---|
| 563 | { | 
|---|
| 564 | for (int i=0;i<numBodies;i++) | 
|---|
| 565 | { | 
|---|
| 566 | btRigidBody* rb = btRigidBody::upcast(bodies[i]); | 
|---|
| 567 | if (rb &&       (rb->getIslandTag() >= 0)) | 
|---|
| 568 | { | 
|---|
| 569 | btAssert(rb->getCompanionId() < 0); | 
|---|
| 570 | int solverBodyId = m_tmpSolverBodyPool.size(); | 
|---|
| 571 | btSolverBody& solverBody = m_tmpSolverBodyPool.expand(); | 
|---|
| 572 | initSolverBody(&solverBody,rb); | 
|---|
| 573 | rb->setCompanionId(solverBodyId); | 
|---|
| 574 | } | 
|---|
| 575 | } | 
|---|
| 576 | } | 
|---|
| 577 | */ | 
|---|
| 578 |  | 
|---|
| 579 | //m_tmpSolverConstraintPool.reserve(minReservation); | 
|---|
| 580 | //m_tmpSolverFrictionConstraintPool.reserve(minReservation); | 
|---|
| 581 |  | 
|---|
| 582 | { | 
|---|
| 583 | int i; | 
|---|
| 584 |  | 
|---|
| 585 | for (i=0;i<numManifolds;i++) | 
|---|
| 586 | { | 
|---|
| 587 | manifold = manifoldPtr[i]; | 
|---|
| 588 | colObj0 = (btCollisionObject*)manifold->getBody0(); | 
|---|
| 589 | colObj1 = (btCollisionObject*)manifold->getBody1(); | 
|---|
| 590 |  | 
|---|
| 591 | int solverBodyIdA=-1; | 
|---|
| 592 | int solverBodyIdB=-1; | 
|---|
| 593 |  | 
|---|
| 594 | if (manifold->getNumContacts()) | 
|---|
| 595 | { | 
|---|
| 596 |  | 
|---|
| 597 |  | 
|---|
| 598 |  | 
|---|
| 599 | if (colObj0->getIslandTag() >= 0) | 
|---|
| 600 | { | 
|---|
| 601 | if (colObj0->getCompanionId() >= 0) | 
|---|
| 602 | { | 
|---|
| 603 | //body has already been converted | 
|---|
| 604 | solverBodyIdA = colObj0->getCompanionId(); | 
|---|
| 605 | } else | 
|---|
| 606 | { | 
|---|
| 607 | solverBodyIdA = m_tmpSolverBodyPool.size(); | 
|---|
| 608 | btSolverBody& solverBody = m_tmpSolverBodyPool.expand(); | 
|---|
| 609 | initSolverBody(&solverBody,colObj0); | 
|---|
| 610 | colObj0->setCompanionId(solverBodyIdA); | 
|---|
| 611 | } | 
|---|
| 612 | } else | 
|---|
| 613 | { | 
|---|
| 614 | //create a static body | 
|---|
| 615 | solverBodyIdA = m_tmpSolverBodyPool.size(); | 
|---|
| 616 | btSolverBody& solverBody = m_tmpSolverBodyPool.expand(); | 
|---|
| 617 | initSolverBody(&solverBody,colObj0); | 
|---|
| 618 | } | 
|---|
| 619 |  | 
|---|
| 620 | if (colObj1->getIslandTag() >= 0) | 
|---|
| 621 | { | 
|---|
| 622 | if (colObj1->getCompanionId() >= 0) | 
|---|
| 623 | { | 
|---|
| 624 | solverBodyIdB = colObj1->getCompanionId(); | 
|---|
| 625 | } else | 
|---|
| 626 | { | 
|---|
| 627 | solverBodyIdB = m_tmpSolverBodyPool.size(); | 
|---|
| 628 | btSolverBody& solverBody = m_tmpSolverBodyPool.expand(); | 
|---|
| 629 | initSolverBody(&solverBody,colObj1); | 
|---|
| 630 | colObj1->setCompanionId(solverBodyIdB); | 
|---|
| 631 | } | 
|---|
| 632 | } else | 
|---|
| 633 | { | 
|---|
| 634 | //create a static body | 
|---|
| 635 | solverBodyIdB = m_tmpSolverBodyPool.size(); | 
|---|
| 636 | btSolverBody& solverBody = m_tmpSolverBodyPool.expand(); | 
|---|
| 637 | initSolverBody(&solverBody,colObj1); | 
|---|
| 638 | } | 
|---|
| 639 | } | 
|---|
| 640 |  | 
|---|
| 641 | btVector3 rel_pos1; | 
|---|
| 642 | btVector3 rel_pos2; | 
|---|
| 643 | btScalar relaxation; | 
|---|
| 644 |  | 
|---|
| 645 | for (int j=0;j<manifold->getNumContacts();j++) | 
|---|
| 646 | { | 
|---|
| 647 |  | 
|---|
| 648 | btManifoldPoint& cp = manifold->getContactPoint(j); | 
|---|
| 649 |  | 
|---|
| 650 | if (cp.getDistance() <= btScalar(0.)) | 
|---|
| 651 | { | 
|---|
| 652 |  | 
|---|
| 653 | const btVector3& pos1 = cp.getPositionWorldOnA(); | 
|---|
| 654 | const btVector3& pos2 = cp.getPositionWorldOnB(); | 
|---|
| 655 |  | 
|---|
| 656 | rel_pos1 = pos1 - colObj0->getWorldTransform().getOrigin(); | 
|---|
| 657 | rel_pos2 = pos2 - colObj1->getWorldTransform().getOrigin(); | 
|---|
| 658 |  | 
|---|
| 659 |  | 
|---|
| 660 | relaxation = 1.f; | 
|---|
| 661 | btScalar rel_vel; | 
|---|
| 662 | btVector3 vel; | 
|---|
| 663 |  | 
|---|
| 664 | int frictionIndex = m_tmpSolverConstraintPool.size(); | 
|---|
| 665 |  | 
|---|
| 666 | { | 
|---|
| 667 | btSolverConstraint& solverConstraint = m_tmpSolverConstraintPool.expand(); | 
|---|
| 668 | btRigidBody* rb0 = btRigidBody::upcast(colObj0); | 
|---|
| 669 | btRigidBody* rb1 = btRigidBody::upcast(colObj1); | 
|---|
| 670 |  | 
|---|
| 671 | solverConstraint.m_solverBodyIdA = solverBodyIdA; | 
|---|
| 672 | solverConstraint.m_solverBodyIdB = solverBodyIdB; | 
|---|
| 673 | solverConstraint.m_constraintType = btSolverConstraint::BT_SOLVER_CONTACT_1D; | 
|---|
| 674 |  | 
|---|
| 675 | solverConstraint.m_originalContactPoint = &cp; | 
|---|
| 676 |  | 
|---|
| 677 | btVector3 torqueAxis0 = rel_pos1.cross(cp.m_normalWorldOnB); | 
|---|
| 678 | solverConstraint.m_angularComponentA = rb0 ? rb0->getInvInertiaTensorWorld()*torqueAxis0 : btVector3(0,0,0); | 
|---|
| 679 | btVector3 torqueAxis1 = rel_pos2.cross(cp.m_normalWorldOnB); | 
|---|
| 680 | solverConstraint.m_angularComponentB = rb1 ? rb1->getInvInertiaTensorWorld()*torqueAxis1 : btVector3(0,0,0); | 
|---|
| 681 | { | 
|---|
| 682 | #ifdef COMPUTE_IMPULSE_DENOM | 
|---|
| 683 | btScalar denom0 = rb0->computeImpulseDenominator(pos1,cp.m_normalWorldOnB); | 
|---|
| 684 | btScalar denom1 = rb1->computeImpulseDenominator(pos2,cp.m_normalWorldOnB); | 
|---|
| 685 | #else | 
|---|
| 686 | btVector3 vec; | 
|---|
| 687 | btScalar denom0 = 0.f; | 
|---|
| 688 | btScalar denom1 = 0.f; | 
|---|
| 689 | if (rb0) | 
|---|
| 690 | { | 
|---|
| 691 | vec = ( solverConstraint.m_angularComponentA).cross(rel_pos1); | 
|---|
| 692 | denom0 = rb0->getInvMass() + cp.m_normalWorldOnB.dot(vec); | 
|---|
| 693 | } | 
|---|
| 694 | if (rb1) | 
|---|
| 695 | { | 
|---|
| 696 | vec = ( solverConstraint.m_angularComponentB).cross(rel_pos2); | 
|---|
| 697 | denom1 = rb1->getInvMass() + cp.m_normalWorldOnB.dot(vec); | 
|---|
| 698 | } | 
|---|
| 699 | #endif //COMPUTE_IMPULSE_DENOM | 
|---|
| 700 |  | 
|---|
| 701 | btScalar denom = relaxation/(denom0+denom1); | 
|---|
| 702 | solverConstraint.m_jacDiagABInv = denom; | 
|---|
| 703 | } | 
|---|
| 704 |  | 
|---|
| 705 | solverConstraint.m_contactNormal = cp.m_normalWorldOnB; | 
|---|
| 706 | solverConstraint.m_relpos1CrossNormal = rel_pos1.cross(cp.m_normalWorldOnB); | 
|---|
| 707 | solverConstraint.m_relpos2CrossNormal = rel_pos2.cross(cp.m_normalWorldOnB); | 
|---|
| 708 |  | 
|---|
| 709 |  | 
|---|
| 710 | btVector3 vel1 = rb0 ? rb0->getVelocityInLocalPoint(rel_pos1) : btVector3(0,0,0); | 
|---|
| 711 | btVector3 vel2 = rb1 ? rb1->getVelocityInLocalPoint(rel_pos2) : btVector3(0,0,0); | 
|---|
| 712 |  | 
|---|
| 713 | vel  = vel1 - vel2; | 
|---|
| 714 |  | 
|---|
| 715 | rel_vel = cp.m_normalWorldOnB.dot(vel); | 
|---|
| 716 |  | 
|---|
| 717 | solverConstraint.m_penetration = btMin(cp.getDistance()+infoGlobal.m_linearSlop,btScalar(0.)); | 
|---|
| 718 | //solverConstraint.m_penetration = cp.getDistance(); | 
|---|
| 719 |  | 
|---|
| 720 | solverConstraint.m_friction = cp.m_combinedFriction; | 
|---|
| 721 |  | 
|---|
| 722 |  | 
|---|
| 723 | if (cp.m_lifeTime>infoGlobal.m_restingContactRestitutionThreshold) | 
|---|
| 724 | { | 
|---|
| 725 | solverConstraint.m_restitution = 0.f; | 
|---|
| 726 | } else | 
|---|
| 727 | { | 
|---|
| 728 | solverConstraint.m_restitution =  restitutionCurve(rel_vel, cp.m_combinedRestitution); | 
|---|
| 729 | if (solverConstraint.m_restitution <= btScalar(0.)) | 
|---|
| 730 | { | 
|---|
| 731 | solverConstraint.m_restitution = 0.f; | 
|---|
| 732 | }; | 
|---|
| 733 | } | 
|---|
| 734 |  | 
|---|
| 735 |  | 
|---|
| 736 | btScalar penVel = -solverConstraint.m_penetration/infoGlobal.m_timeStep; | 
|---|
| 737 |  | 
|---|
| 738 |  | 
|---|
| 739 |  | 
|---|
| 740 | if (solverConstraint.m_restitution > penVel) | 
|---|
| 741 | { | 
|---|
| 742 | solverConstraint.m_penetration = btScalar(0.); | 
|---|
| 743 | } | 
|---|
| 744 |  | 
|---|
| 745 |  | 
|---|
| 746 |  | 
|---|
| 747 | ///warm starting (or zero if disabled) | 
|---|
| 748 | if (infoGlobal.m_solverMode & SOLVER_USE_WARMSTARTING) | 
|---|
| 749 | { | 
|---|
| 750 | solverConstraint.m_appliedImpulse = cp.m_appliedImpulse * infoGlobal.m_warmstartingFactor; | 
|---|
| 751 | if (rb0) | 
|---|
| 752 | m_tmpSolverBodyPool[solverConstraint.m_solverBodyIdA].internalApplyImpulse(solverConstraint.m_contactNormal*rb0->getInvMass(),solverConstraint.m_angularComponentA,solverConstraint.m_appliedImpulse); | 
|---|
| 753 | if (rb1) | 
|---|
| 754 | m_tmpSolverBodyPool[solverConstraint.m_solverBodyIdB].internalApplyImpulse(solverConstraint.m_contactNormal*rb1->getInvMass(),solverConstraint.m_angularComponentB,-solverConstraint.m_appliedImpulse); | 
|---|
| 755 | } else | 
|---|
| 756 | { | 
|---|
| 757 | solverConstraint.m_appliedImpulse = 0.f; | 
|---|
| 758 | } | 
|---|
| 759 |  | 
|---|
| 760 | solverConstraint.m_appliedPushImpulse = 0.f; | 
|---|
| 761 |  | 
|---|
| 762 | solverConstraint.m_frictionIndex = m_tmpSolverFrictionConstraintPool.size(); | 
|---|
| 763 | if (!cp.m_lateralFrictionInitialized) | 
|---|
| 764 | { | 
|---|
| 765 | cp.m_lateralFrictionDir1 = vel - cp.m_normalWorldOnB * rel_vel; | 
|---|
| 766 | btScalar lat_rel_vel = cp.m_lateralFrictionDir1.length2(); | 
|---|
| 767 | if (lat_rel_vel > SIMD_EPSILON)//0.0f) | 
|---|
| 768 | { | 
|---|
| 769 | cp.m_lateralFrictionDir1 /= btSqrt(lat_rel_vel); | 
|---|
| 770 | addFrictionConstraint(cp.m_lateralFrictionDir1,solverBodyIdA,solverBodyIdB,frictionIndex,cp,rel_pos1,rel_pos2,colObj0,colObj1, relaxation); | 
|---|
| 771 | if(infoGlobal.m_solverMode & SOLVER_USE_FRICTION_WARMSTARTING) | 
|---|
| 772 | { | 
|---|
| 773 | cp.m_lateralFrictionDir2 = cp.m_lateralFrictionDir1.cross(cp.m_normalWorldOnB); | 
|---|
| 774 | cp.m_lateralFrictionDir2.normalize();//?? | 
|---|
| 775 | addFrictionConstraint(cp.m_lateralFrictionDir2,solverBodyIdA,solverBodyIdB,frictionIndex,cp,rel_pos1,rel_pos2,colObj0,colObj1, relaxation); | 
|---|
| 776 | cp.m_lateralFrictionInitialized = true; | 
|---|
| 777 | } | 
|---|
| 778 | } else | 
|---|
| 779 | { | 
|---|
| 780 | //re-calculate friction direction every frame, todo: check if this is really needed | 
|---|
| 781 | btPlaneSpace1(cp.m_normalWorldOnB,cp.m_lateralFrictionDir1,cp.m_lateralFrictionDir2); | 
|---|
| 782 | addFrictionConstraint(cp.m_lateralFrictionDir1,solverBodyIdA,solverBodyIdB,frictionIndex,cp,rel_pos1,rel_pos2,colObj0,colObj1, relaxation); | 
|---|
| 783 | addFrictionConstraint(cp.m_lateralFrictionDir2,solverBodyIdA,solverBodyIdB,frictionIndex,cp,rel_pos1,rel_pos2,colObj0,colObj1, relaxation); | 
|---|
| 784 | if (infoGlobal.m_solverMode & SOLVER_USE_FRICTION_WARMSTARTING) | 
|---|
| 785 | { | 
|---|
| 786 | cp.m_lateralFrictionInitialized = true; | 
|---|
| 787 | } | 
|---|
| 788 | } | 
|---|
| 789 |  | 
|---|
| 790 | } else | 
|---|
| 791 | { | 
|---|
| 792 | addFrictionConstraint(cp.m_lateralFrictionDir1,solverBodyIdA,solverBodyIdB,frictionIndex,cp,rel_pos1,rel_pos2,colObj0,colObj1, relaxation); | 
|---|
| 793 | if (infoGlobal.m_solverMode & SOLVER_USE_FRICTION_WARMSTARTING) | 
|---|
| 794 | addFrictionConstraint(cp.m_lateralFrictionDir2,solverBodyIdA,solverBodyIdB,frictionIndex,cp,rel_pos1,rel_pos2,colObj0,colObj1, relaxation); | 
|---|
| 795 | } | 
|---|
| 796 |  | 
|---|
| 797 | if (infoGlobal.m_solverMode & SOLVER_USE_FRICTION_WARMSTARTING) | 
|---|
| 798 | { | 
|---|
| 799 | { | 
|---|
| 800 | btSolverConstraint& frictionConstraint1 = m_tmpSolverFrictionConstraintPool[solverConstraint.m_frictionIndex]; | 
|---|
| 801 | if (infoGlobal.m_solverMode & SOLVER_USE_WARMSTARTING) | 
|---|
| 802 | { | 
|---|
| 803 | frictionConstraint1.m_appliedImpulse = cp.m_appliedImpulseLateral1 * infoGlobal.m_warmstartingFactor; | 
|---|
| 804 | if (rb0) | 
|---|
| 805 | m_tmpSolverBodyPool[solverConstraint.m_solverBodyIdA].internalApplyImpulse(frictionConstraint1.m_contactNormal*rb0->getInvMass(),frictionConstraint1.m_angularComponentA,frictionConstraint1.m_appliedImpulse); | 
|---|
| 806 | if (rb1) | 
|---|
| 807 | m_tmpSolverBodyPool[solverConstraint.m_solverBodyIdB].internalApplyImpulse(frictionConstraint1.m_contactNormal*rb1->getInvMass(),frictionConstraint1.m_angularComponentB,-frictionConstraint1.m_appliedImpulse); | 
|---|
| 808 | } else | 
|---|
| 809 | { | 
|---|
| 810 | frictionConstraint1.m_appliedImpulse = 0.f; | 
|---|
| 811 | } | 
|---|
| 812 | } | 
|---|
| 813 | { | 
|---|
| 814 | btSolverConstraint& frictionConstraint2 = m_tmpSolverFrictionConstraintPool[solverConstraint.m_frictionIndex+1]; | 
|---|
| 815 | if (infoGlobal.m_solverMode & SOLVER_USE_WARMSTARTING) | 
|---|
| 816 | { | 
|---|
| 817 | frictionConstraint2.m_appliedImpulse = cp.m_appliedImpulseLateral2 * infoGlobal.m_warmstartingFactor; | 
|---|
| 818 | if (rb0) | 
|---|
| 819 | m_tmpSolverBodyPool[solverConstraint.m_solverBodyIdA].internalApplyImpulse(frictionConstraint2.m_contactNormal*rb0->getInvMass(),frictionConstraint2.m_angularComponentA,frictionConstraint2.m_appliedImpulse); | 
|---|
| 820 | if (rb1) | 
|---|
| 821 | m_tmpSolverBodyPool[solverConstraint.m_solverBodyIdB].internalApplyImpulse(frictionConstraint2.m_contactNormal*rb1->getInvMass(),frictionConstraint2.m_angularComponentB,-frictionConstraint2.m_appliedImpulse); | 
|---|
| 822 | } else | 
|---|
| 823 | { | 
|---|
| 824 | frictionConstraint2.m_appliedImpulse = 0.f; | 
|---|
| 825 | } | 
|---|
| 826 | } | 
|---|
| 827 | } | 
|---|
| 828 | } | 
|---|
| 829 |  | 
|---|
| 830 |  | 
|---|
| 831 | } | 
|---|
| 832 | } | 
|---|
| 833 | } | 
|---|
| 834 | } | 
|---|
| 835 | } | 
|---|
| 836 |  | 
|---|
| 837 | btContactSolverInfo info = infoGlobal; | 
|---|
| 838 |  | 
|---|
| 839 | { | 
|---|
| 840 | int j; | 
|---|
| 841 | for (j=0;j<numConstraints;j++) | 
|---|
| 842 | { | 
|---|
| 843 | btTypedConstraint* constraint = constraints[j]; | 
|---|
| 844 | constraint->buildJacobian(); | 
|---|
| 845 | } | 
|---|
| 846 | } | 
|---|
| 847 |  | 
|---|
| 848 |  | 
|---|
| 849 |  | 
|---|
| 850 | int numConstraintPool = m_tmpSolverConstraintPool.size(); | 
|---|
| 851 | int numFrictionPool = m_tmpSolverFrictionConstraintPool.size(); | 
|---|
| 852 |  | 
|---|
| 853 | ///@todo: use stack allocator for such temporarily memory, same for solver bodies/constraints | 
|---|
| 854 | m_orderTmpConstraintPool.resize(numConstraintPool); | 
|---|
| 855 | m_orderFrictionConstraintPool.resize(numFrictionPool); | 
|---|
| 856 | { | 
|---|
| 857 | int i; | 
|---|
| 858 | for (i=0;i<numConstraintPool;i++) | 
|---|
| 859 | { | 
|---|
| 860 | m_orderTmpConstraintPool[i] = i; | 
|---|
| 861 | } | 
|---|
| 862 | for (i=0;i<numFrictionPool;i++) | 
|---|
| 863 | { | 
|---|
| 864 | m_orderFrictionConstraintPool[i] = i; | 
|---|
| 865 | } | 
|---|
| 866 | } | 
|---|
| 867 |  | 
|---|
| 868 |  | 
|---|
| 869 |  | 
|---|
| 870 | return 0.f; | 
|---|
| 871 |  | 
|---|
| 872 | } | 
|---|
| 873 |  | 
|---|
| 874 | btScalar btSequentialImpulseConstraintSolver::solveGroupCacheFriendlyIterations(btCollisionObject** /*bodies */,int /*numBodies*/,btPersistentManifold** /*manifoldPtr*/, int /*numManifolds*/,btTypedConstraint** constraints,int numConstraints,const btContactSolverInfo& infoGlobal,btIDebugDraw* /*debugDrawer*/,btStackAlloc* /*stackAlloc*/) | 
|---|
| 875 | { | 
|---|
| 876 | BT_PROFILE("solveGroupCacheFriendlyIterations"); | 
|---|
| 877 | int numConstraintPool = m_tmpSolverConstraintPool.size(); | 
|---|
| 878 | int numFrictionPool = m_tmpSolverFrictionConstraintPool.size(); | 
|---|
| 879 |  | 
|---|
| 880 | //should traverse the contacts random order... | 
|---|
| 881 | int iteration; | 
|---|
| 882 | { | 
|---|
| 883 | for ( iteration = 0;iteration<infoGlobal.m_numIterations;iteration++) | 
|---|
| 884 | { | 
|---|
| 885 |  | 
|---|
| 886 | int j; | 
|---|
| 887 | if (infoGlobal.m_solverMode & SOLVER_RANDMIZE_ORDER) | 
|---|
| 888 | { | 
|---|
| 889 | if ((iteration & 7) == 0) { | 
|---|
| 890 | for (j=0; j<numConstraintPool; ++j) { | 
|---|
| 891 | int tmp = m_orderTmpConstraintPool[j]; | 
|---|
| 892 | int swapi = btRandInt2(j+1); | 
|---|
| 893 | m_orderTmpConstraintPool[j] = m_orderTmpConstraintPool[swapi]; | 
|---|
| 894 | m_orderTmpConstraintPool[swapi] = tmp; | 
|---|
| 895 | } | 
|---|
| 896 |  | 
|---|
| 897 | for (j=0; j<numFrictionPool; ++j) { | 
|---|
| 898 | int tmp = m_orderFrictionConstraintPool[j]; | 
|---|
| 899 | int swapi = btRandInt2(j+1); | 
|---|
| 900 | m_orderFrictionConstraintPool[j] = m_orderFrictionConstraintPool[swapi]; | 
|---|
| 901 | m_orderFrictionConstraintPool[swapi] = tmp; | 
|---|
| 902 | } | 
|---|
| 903 | } | 
|---|
| 904 | } | 
|---|
| 905 |  | 
|---|
| 906 | for (j=0;j<numConstraints;j++) | 
|---|
| 907 | { | 
|---|
| 908 | btTypedConstraint* constraint = constraints[j]; | 
|---|
| 909 | ///todo: use solver bodies, so we don't need to copy from/to btRigidBody | 
|---|
| 910 |  | 
|---|
| 911 | if ((constraint->getRigidBodyA().getIslandTag() >= 0) && (constraint->getRigidBodyA().getCompanionId() >= 0)) | 
|---|
| 912 | { | 
|---|
| 913 | m_tmpSolverBodyPool[constraint->getRigidBodyA().getCompanionId()].writebackVelocity(); | 
|---|
| 914 | } | 
|---|
| 915 | if ((constraint->getRigidBodyB().getIslandTag() >= 0) && (constraint->getRigidBodyB().getCompanionId() >= 0)) | 
|---|
| 916 | { | 
|---|
| 917 | m_tmpSolverBodyPool[constraint->getRigidBodyB().getCompanionId()].writebackVelocity(); | 
|---|
| 918 | } | 
|---|
| 919 |  | 
|---|
| 920 | constraint->solveConstraint(infoGlobal.m_timeStep); | 
|---|
| 921 |  | 
|---|
| 922 | if ((constraint->getRigidBodyA().getIslandTag() >= 0) && (constraint->getRigidBodyA().getCompanionId() >= 0)) | 
|---|
| 923 | { | 
|---|
| 924 | m_tmpSolverBodyPool[constraint->getRigidBodyA().getCompanionId()].readVelocity(); | 
|---|
| 925 | } | 
|---|
| 926 | if ((constraint->getRigidBodyB().getIslandTag() >= 0) && (constraint->getRigidBodyB().getCompanionId() >= 0)) | 
|---|
| 927 | { | 
|---|
| 928 | m_tmpSolverBodyPool[constraint->getRigidBodyB().getCompanionId()].readVelocity(); | 
|---|
| 929 | } | 
|---|
| 930 |  | 
|---|
| 931 | } | 
|---|
| 932 |  | 
|---|
| 933 | { | 
|---|
| 934 | int numPoolConstraints = m_tmpSolverConstraintPool.size(); | 
|---|
| 935 | for (j=0;j<numPoolConstraints;j++) | 
|---|
| 936 | { | 
|---|
| 937 |  | 
|---|
| 938 | const btSolverConstraint& solveManifold = m_tmpSolverConstraintPool[m_orderTmpConstraintPool[j]]; | 
|---|
| 939 | resolveSingleCollisionCombinedCacheFriendly(m_tmpSolverBodyPool[solveManifold.m_solverBodyIdA], | 
|---|
| 940 | m_tmpSolverBodyPool[solveManifold.m_solverBodyIdB],solveManifold,infoGlobal); | 
|---|
| 941 | } | 
|---|
| 942 | } | 
|---|
| 943 |  | 
|---|
| 944 | { | 
|---|
| 945 | int numFrictionPoolConstraints = m_tmpSolverFrictionConstraintPool.size(); | 
|---|
| 946 |  | 
|---|
| 947 | for (j=0;j<numFrictionPoolConstraints;j++) | 
|---|
| 948 | { | 
|---|
| 949 | const btSolverConstraint& solveManifold = m_tmpSolverFrictionConstraintPool[m_orderFrictionConstraintPool[j]]; | 
|---|
| 950 | btScalar totalImpulse = m_tmpSolverConstraintPool[solveManifold.m_frictionIndex].m_appliedImpulse+ | 
|---|
| 951 | m_tmpSolverConstraintPool[solveManifold.m_frictionIndex].m_appliedPushImpulse; | 
|---|
| 952 |  | 
|---|
| 953 | resolveSingleFrictionCacheFriendly(m_tmpSolverBodyPool[solveManifold.m_solverBodyIdA], | 
|---|
| 954 | m_tmpSolverBodyPool[solveManifold.m_solverBodyIdB],solveManifold,infoGlobal, | 
|---|
| 955 | totalImpulse); | 
|---|
| 956 | } | 
|---|
| 957 | } | 
|---|
| 958 |  | 
|---|
| 959 |  | 
|---|
| 960 |  | 
|---|
| 961 | } | 
|---|
| 962 |  | 
|---|
| 963 | if (infoGlobal.m_splitImpulse) | 
|---|
| 964 | { | 
|---|
| 965 |  | 
|---|
| 966 | for ( iteration = 0;iteration<infoGlobal.m_numIterations;iteration++) | 
|---|
| 967 | { | 
|---|
| 968 | { | 
|---|
| 969 | int numPoolConstraints = m_tmpSolverConstraintPool.size(); | 
|---|
| 970 | int j; | 
|---|
| 971 | for (j=0;j<numPoolConstraints;j++) | 
|---|
| 972 | { | 
|---|
| 973 | const btSolverConstraint& solveManifold = m_tmpSolverConstraintPool[m_orderTmpConstraintPool[j]]; | 
|---|
| 974 |  | 
|---|
| 975 | resolveSplitPenetrationImpulseCacheFriendly(m_tmpSolverBodyPool[solveManifold.m_solverBodyIdA], | 
|---|
| 976 | m_tmpSolverBodyPool[solveManifold.m_solverBodyIdB],solveManifold,infoGlobal); | 
|---|
| 977 | } | 
|---|
| 978 | } | 
|---|
| 979 | } | 
|---|
| 980 |  | 
|---|
| 981 | } | 
|---|
| 982 |  | 
|---|
| 983 | } | 
|---|
| 984 |  | 
|---|
| 985 | return 0.f; | 
|---|
| 986 | } | 
|---|
| 987 |  | 
|---|
| 988 |  | 
|---|
| 989 | btScalar btSequentialImpulseConstraintSolver::solveGroupCacheFriendly(btCollisionObject** bodies,int numBodies,btPersistentManifold** manifoldPtr, int numManifolds,btTypedConstraint** constraints,int numConstraints,const btContactSolverInfo& infoGlobal,btIDebugDraw* debugDrawer,btStackAlloc* stackAlloc) | 
|---|
| 990 | { | 
|---|
| 991 | int i; | 
|---|
| 992 |  | 
|---|
| 993 | solveGroupCacheFriendlySetup( bodies, numBodies, manifoldPtr,  numManifolds,constraints, numConstraints,infoGlobal,debugDrawer, stackAlloc); | 
|---|
| 994 | solveGroupCacheFriendlyIterations(bodies, numBodies, manifoldPtr,  numManifolds,constraints, numConstraints,infoGlobal,debugDrawer, stackAlloc); | 
|---|
| 995 |  | 
|---|
| 996 | int numPoolConstraints = m_tmpSolverConstraintPool.size(); | 
|---|
| 997 | int j; | 
|---|
| 998 | for (j=0;j<numPoolConstraints;j++) | 
|---|
| 999 | { | 
|---|
| 1000 |  | 
|---|
| 1001 | const btSolverConstraint& solveManifold = m_tmpSolverConstraintPool[j]; | 
|---|
| 1002 | btManifoldPoint* pt = (btManifoldPoint*) solveManifold.m_originalContactPoint; | 
|---|
| 1003 | btAssert(pt); | 
|---|
| 1004 | pt->m_appliedImpulse = solveManifold.m_appliedImpulse; | 
|---|
| 1005 | if (infoGlobal.m_solverMode & SOLVER_USE_FRICTION_WARMSTARTING) | 
|---|
| 1006 | { | 
|---|
| 1007 | pt->m_appliedImpulseLateral1 = m_tmpSolverFrictionConstraintPool[solveManifold.m_frictionIndex].m_appliedImpulse; | 
|---|
| 1008 | pt->m_appliedImpulseLateral2 = m_tmpSolverFrictionConstraintPool[solveManifold.m_frictionIndex+1].m_appliedImpulse; | 
|---|
| 1009 | } | 
|---|
| 1010 |  | 
|---|
| 1011 | //do a callback here? | 
|---|
| 1012 |  | 
|---|
| 1013 | } | 
|---|
| 1014 |  | 
|---|
| 1015 | if (infoGlobal.m_splitImpulse) | 
|---|
| 1016 | { | 
|---|
| 1017 | for ( i=0;i<m_tmpSolverBodyPool.size();i++) | 
|---|
| 1018 | { | 
|---|
| 1019 | m_tmpSolverBodyPool[i].writebackVelocity(infoGlobal.m_timeStep); | 
|---|
| 1020 | } | 
|---|
| 1021 | } else | 
|---|
| 1022 | { | 
|---|
| 1023 | for ( i=0;i<m_tmpSolverBodyPool.size();i++) | 
|---|
| 1024 | { | 
|---|
| 1025 | m_tmpSolverBodyPool[i].writebackVelocity(); | 
|---|
| 1026 | } | 
|---|
| 1027 | } | 
|---|
| 1028 |  | 
|---|
| 1029 | //      printf("m_tmpSolverConstraintPool.size() = %i\n",m_tmpSolverConstraintPool.size()); | 
|---|
| 1030 |  | 
|---|
| 1031 | /* | 
|---|
| 1032 | printf("m_tmpSolverBodyPool.size() = %i\n",m_tmpSolverBodyPool.size()); | 
|---|
| 1033 | printf("m_tmpSolverConstraintPool.size() = %i\n",m_tmpSolverConstraintPool.size()); | 
|---|
| 1034 | printf("m_tmpSolverFrictionConstraintPool.size() = %i\n",m_tmpSolverFrictionConstraintPool.size()); | 
|---|
| 1035 |  | 
|---|
| 1036 |  | 
|---|
| 1037 | printf("m_tmpSolverBodyPool.capacity() = %i\n",m_tmpSolverBodyPool.capacity()); | 
|---|
| 1038 | printf("m_tmpSolverConstraintPool.capacity() = %i\n",m_tmpSolverConstraintPool.capacity()); | 
|---|
| 1039 | printf("m_tmpSolverFrictionConstraintPool.capacity() = %i\n",m_tmpSolverFrictionConstraintPool.capacity()); | 
|---|
| 1040 | */ | 
|---|
| 1041 |  | 
|---|
| 1042 | m_tmpSolverBodyPool.resize(0); | 
|---|
| 1043 | m_tmpSolverConstraintPool.resize(0); | 
|---|
| 1044 | m_tmpSolverFrictionConstraintPool.resize(0); | 
|---|
| 1045 |  | 
|---|
| 1046 |  | 
|---|
| 1047 | return 0.f; | 
|---|
| 1048 | } | 
|---|
| 1049 |  | 
|---|
| 1050 | /// btSequentialImpulseConstraintSolver Sequentially applies impulses | 
|---|
| 1051 | btScalar btSequentialImpulseConstraintSolver::solveGroup(btCollisionObject** bodies,int numBodies,btPersistentManifold** manifoldPtr, int numManifolds,btTypedConstraint** constraints,int numConstraints,const btContactSolverInfo& infoGlobal,btIDebugDraw* debugDrawer,btStackAlloc* stackAlloc,btDispatcher* /*dispatcher*/) | 
|---|
| 1052 | { | 
|---|
| 1053 | BT_PROFILE("solveGroup"); | 
|---|
| 1054 | if (infoGlobal.m_solverMode & SOLVER_CACHE_FRIENDLY) | 
|---|
| 1055 | { | 
|---|
| 1056 | //you need to provide at least some bodies | 
|---|
| 1057 | //btSimpleDynamicsWorld needs to switch off SOLVER_CACHE_FRIENDLY | 
|---|
| 1058 | btAssert(bodies); | 
|---|
| 1059 | btAssert(numBodies); | 
|---|
| 1060 | return solveGroupCacheFriendly(bodies,numBodies,manifoldPtr, numManifolds,constraints,numConstraints,infoGlobal,debugDrawer,stackAlloc); | 
|---|
| 1061 | } | 
|---|
| 1062 |  | 
|---|
| 1063 |  | 
|---|
| 1064 |  | 
|---|
| 1065 | btContactSolverInfo info = infoGlobal; | 
|---|
| 1066 |  | 
|---|
| 1067 | int numiter = infoGlobal.m_numIterations; | 
|---|
| 1068 |  | 
|---|
| 1069 | int totalPoints = 0; | 
|---|
| 1070 |  | 
|---|
| 1071 |  | 
|---|
| 1072 | { | 
|---|
| 1073 | short j; | 
|---|
| 1074 | for (j=0;j<numManifolds;j++) | 
|---|
| 1075 | { | 
|---|
| 1076 | btPersistentManifold* manifold = manifoldPtr[j]; | 
|---|
| 1077 | prepareConstraints(manifold,info,debugDrawer); | 
|---|
| 1078 |  | 
|---|
| 1079 | for (short p=0;p<manifoldPtr[j]->getNumContacts();p++) | 
|---|
| 1080 | { | 
|---|
| 1081 | gOrder[totalPoints].m_manifoldIndex = j; | 
|---|
| 1082 | gOrder[totalPoints].m_pointIndex = p; | 
|---|
| 1083 | totalPoints++; | 
|---|
| 1084 | } | 
|---|
| 1085 | } | 
|---|
| 1086 | } | 
|---|
| 1087 |  | 
|---|
| 1088 | { | 
|---|
| 1089 | int j; | 
|---|
| 1090 | for (j=0;j<numConstraints;j++) | 
|---|
| 1091 | { | 
|---|
| 1092 | btTypedConstraint* constraint = constraints[j]; | 
|---|
| 1093 | constraint->buildJacobian(); | 
|---|
| 1094 | } | 
|---|
| 1095 | } | 
|---|
| 1096 |  | 
|---|
| 1097 |  | 
|---|
| 1098 | //should traverse the contacts random order... | 
|---|
| 1099 | int iteration; | 
|---|
| 1100 |  | 
|---|
| 1101 | { | 
|---|
| 1102 | for ( iteration = 0;iteration<numiter;iteration++) | 
|---|
| 1103 | { | 
|---|
| 1104 | int j; | 
|---|
| 1105 | if (infoGlobal.m_solverMode & SOLVER_RANDMIZE_ORDER) | 
|---|
| 1106 | { | 
|---|
| 1107 | if ((iteration & 7) == 0) { | 
|---|
| 1108 | for (j=0; j<totalPoints; ++j) { | 
|---|
| 1109 | btOrderIndex tmp = gOrder[j]; | 
|---|
| 1110 | int swapi = btRandInt2(j+1); | 
|---|
| 1111 | gOrder[j] = gOrder[swapi]; | 
|---|
| 1112 | gOrder[swapi] = tmp; | 
|---|
| 1113 | } | 
|---|
| 1114 | } | 
|---|
| 1115 | } | 
|---|
| 1116 |  | 
|---|
| 1117 | for (j=0;j<numConstraints;j++) | 
|---|
| 1118 | { | 
|---|
| 1119 | btTypedConstraint* constraint = constraints[j]; | 
|---|
| 1120 | constraint->solveConstraint(info.m_timeStep); | 
|---|
| 1121 | } | 
|---|
| 1122 |  | 
|---|
| 1123 | for (j=0;j<totalPoints;j++) | 
|---|
| 1124 | { | 
|---|
| 1125 | btPersistentManifold* manifold = manifoldPtr[gOrder[j].m_manifoldIndex]; | 
|---|
| 1126 | solve( (btRigidBody*)manifold->getBody0(), | 
|---|
| 1127 | (btRigidBody*)manifold->getBody1() | 
|---|
| 1128 | ,manifold->getContactPoint(gOrder[j].m_pointIndex),info,iteration,debugDrawer); | 
|---|
| 1129 | } | 
|---|
| 1130 |  | 
|---|
| 1131 | for (j=0;j<totalPoints;j++) | 
|---|
| 1132 | { | 
|---|
| 1133 | btPersistentManifold* manifold = manifoldPtr[gOrder[j].m_manifoldIndex]; | 
|---|
| 1134 | solveFriction((btRigidBody*)manifold->getBody0(), | 
|---|
| 1135 | (btRigidBody*)manifold->getBody1(),manifold->getContactPoint(gOrder[j].m_pointIndex),info,iteration,debugDrawer); | 
|---|
| 1136 | } | 
|---|
| 1137 |  | 
|---|
| 1138 | } | 
|---|
| 1139 | } | 
|---|
| 1140 |  | 
|---|
| 1141 |  | 
|---|
| 1142 |  | 
|---|
| 1143 |  | 
|---|
| 1144 | return btScalar(0.); | 
|---|
| 1145 | } | 
|---|
| 1146 |  | 
|---|
| 1147 |  | 
|---|
| 1148 |  | 
|---|
| 1149 |  | 
|---|
| 1150 |  | 
|---|
| 1151 |  | 
|---|
| 1152 |  | 
|---|
| 1153 | void    btSequentialImpulseConstraintSolver::prepareConstraints(btPersistentManifold* manifoldPtr, const btContactSolverInfo& info,btIDebugDraw* debugDrawer) | 
|---|
| 1154 | { | 
|---|
| 1155 |  | 
|---|
| 1156 | (void)debugDrawer; | 
|---|
| 1157 |  | 
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| 1158 | btRigidBody* body0 = (btRigidBody*)manifoldPtr->getBody0(); | 
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| 1159 | btRigidBody* body1 = (btRigidBody*)manifoldPtr->getBody1(); | 
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| 1160 |  | 
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| 1161 |  | 
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| 1162 | //only necessary to refresh the manifold once (first iteration). The integration is done outside the loop | 
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| 1163 | { | 
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| 1164 | #ifdef FORCE_REFESH_CONTACT_MANIFOLDS | 
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| 1165 | manifoldPtr->refreshContactPoints(body0->getCenterOfMassTransform(),body1->getCenterOfMassTransform()); | 
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| 1166 | #endif //FORCE_REFESH_CONTACT_MANIFOLDS | 
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| 1167 | int numpoints = manifoldPtr->getNumContacts(); | 
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| 1168 |  | 
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| 1169 | gTotalContactPoints += numpoints; | 
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| 1170 |  | 
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| 1171 |  | 
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| 1172 | for (int i=0;i<numpoints ;i++) | 
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| 1173 | { | 
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| 1174 | btManifoldPoint& cp = manifoldPtr->getContactPoint(i); | 
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| 1175 | if (cp.getDistance() <= btScalar(0.)) | 
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| 1176 | { | 
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| 1177 | const btVector3& pos1 = cp.getPositionWorldOnA(); | 
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| 1178 | const btVector3& pos2 = cp.getPositionWorldOnB(); | 
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| 1179 |  | 
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| 1180 | btVector3 rel_pos1 = pos1 - body0->getCenterOfMassPosition(); | 
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| 1181 | btVector3 rel_pos2 = pos2 - body1->getCenterOfMassPosition(); | 
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| 1182 |  | 
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| 1183 |  | 
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| 1184 | //this jacobian entry is re-used for all iterations | 
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| 1185 | btJacobianEntry jac(body0->getCenterOfMassTransform().getBasis().transpose(), | 
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| 1186 | body1->getCenterOfMassTransform().getBasis().transpose(), | 
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| 1187 | rel_pos1,rel_pos2,cp.m_normalWorldOnB,body0->getInvInertiaDiagLocal(),body0->getInvMass(), | 
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| 1188 | body1->getInvInertiaDiagLocal(),body1->getInvMass()); | 
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| 1189 |  | 
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| 1190 |  | 
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| 1191 | btScalar jacDiagAB = jac.getDiagonal(); | 
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| 1192 |  | 
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| 1193 | btConstraintPersistentData* cpd = (btConstraintPersistentData*) cp.m_userPersistentData; | 
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| 1194 | if (cpd) | 
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| 1195 | { | 
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| 1196 | //might be invalid | 
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| 1197 | cpd->m_persistentLifeTime++; | 
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| 1198 | if (cpd->m_persistentLifeTime != cp.getLifeTime()) | 
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| 1199 | { | 
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| 1200 | //printf("Invalid: cpd->m_persistentLifeTime = %i cp.getLifeTime() = %i\n",cpd->m_persistentLifeTime,cp.getLifeTime()); | 
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| 1201 | new (cpd) btConstraintPersistentData; | 
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| 1202 | cpd->m_persistentLifeTime = cp.getLifeTime(); | 
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| 1203 |  | 
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| 1204 | } else | 
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| 1205 | { | 
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| 1206 | //printf("Persistent: cpd->m_persistentLifeTime = %i cp.getLifeTime() = %i\n",cpd->m_persistentLifeTime,cp.getLifeTime()); | 
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| 1207 |  | 
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| 1208 | } | 
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| 1209 | } else | 
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| 1210 | { | 
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| 1211 |  | 
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| 1212 | //todo: should this be in a pool? | 
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| 1213 | void* mem = btAlignedAlloc(sizeof(btConstraintPersistentData),16); | 
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| 1214 | cpd = new (mem)btConstraintPersistentData; | 
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| 1215 | assert(cpd); | 
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| 1216 |  | 
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| 1217 | totalCpd ++; | 
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| 1218 | //printf("totalCpd = %i Created Ptr %x\n",totalCpd,cpd); | 
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| 1219 | cp.m_userPersistentData = cpd; | 
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| 1220 | cpd->m_persistentLifeTime = cp.getLifeTime(); | 
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| 1221 | //printf("CREATED: %x . cpd->m_persistentLifeTime = %i cp.getLifeTime() = %i\n",cpd,cpd->m_persistentLifeTime,cp.getLifeTime()); | 
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| 1222 |  | 
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| 1223 | } | 
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| 1224 | assert(cpd); | 
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| 1225 |  | 
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| 1226 | cpd->m_jacDiagABInv = btScalar(1.) / jacDiagAB; | 
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| 1227 |  | 
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| 1228 | //Dependent on Rigidbody A and B types, fetch the contact/friction response func | 
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| 1229 | //perhaps do a similar thing for friction/restutution combiner funcs... | 
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| 1230 |  | 
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| 1231 | cpd->m_frictionSolverFunc = m_frictionDispatch[body0->m_frictionSolverType][body1->m_frictionSolverType]; | 
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| 1232 | cpd->m_contactSolverFunc = m_contactDispatch[body0->m_contactSolverType][body1->m_contactSolverType]; | 
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| 1233 |  | 
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| 1234 | btVector3 vel1 = body0->getVelocityInLocalPoint(rel_pos1); | 
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| 1235 | btVector3 vel2 = body1->getVelocityInLocalPoint(rel_pos2); | 
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| 1236 | btVector3 vel = vel1 - vel2; | 
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| 1237 | btScalar rel_vel; | 
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| 1238 | rel_vel = cp.m_normalWorldOnB.dot(vel); | 
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| 1239 |  | 
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| 1240 | btScalar combinedRestitution = cp.m_combinedRestitution; | 
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| 1241 |  | 
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| 1242 | cpd->m_penetration = cp.getDistance();///btScalar(info.m_numIterations); | 
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| 1243 | cpd->m_friction = cp.m_combinedFriction; | 
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| 1244 | if (cp.m_lifeTime>info.m_restingContactRestitutionThreshold) | 
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| 1245 | { | 
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| 1246 | cpd->m_restitution = 0.f; | 
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| 1247 | } else | 
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| 1248 | { | 
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| 1249 | cpd->m_restitution = restitutionCurve(rel_vel, combinedRestitution); | 
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| 1250 | if (cpd->m_restitution <= btScalar(0.)) | 
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| 1251 | { | 
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| 1252 | cpd->m_restitution = btScalar(0.0); | 
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| 1253 | }; | 
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| 1254 | } | 
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| 1255 |  | 
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| 1256 | //restitution and penetration work in same direction so | 
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| 1257 | //rel_vel | 
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| 1258 |  | 
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| 1259 | btScalar penVel = -cpd->m_penetration/info.m_timeStep; | 
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| 1260 |  | 
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| 1261 | if (cpd->m_restitution > penVel) | 
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| 1262 | { | 
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| 1263 | cpd->m_penetration = btScalar(0.); | 
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| 1264 | } | 
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| 1265 |  | 
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| 1266 |  | 
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| 1267 | btScalar relaxation = info.m_damping; | 
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| 1268 | if (info.m_solverMode & SOLVER_USE_WARMSTARTING) | 
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| 1269 | { | 
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| 1270 | cpd->m_appliedImpulse *= relaxation; | 
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| 1271 | } else | 
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| 1272 | { | 
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| 1273 | cpd->m_appliedImpulse =btScalar(0.); | 
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| 1274 | } | 
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| 1275 |  | 
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| 1276 | //for friction | 
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| 1277 | cpd->m_prevAppliedImpulse = cpd->m_appliedImpulse; | 
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| 1278 |  | 
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| 1279 | //re-calculate friction direction every frame, todo: check if this is really needed | 
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| 1280 | btPlaneSpace1(cp.m_normalWorldOnB,cpd->m_frictionWorldTangential0,cpd->m_frictionWorldTangential1); | 
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| 1281 |  | 
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| 1282 |  | 
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| 1283 | #define NO_FRICTION_WARMSTART 1 | 
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| 1284 |  | 
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| 1285 | #ifdef NO_FRICTION_WARMSTART | 
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| 1286 | cpd->m_accumulatedTangentImpulse0 = btScalar(0.); | 
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| 1287 | cpd->m_accumulatedTangentImpulse1 = btScalar(0.); | 
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| 1288 | #endif //NO_FRICTION_WARMSTART | 
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| 1289 | btScalar denom0 = body0->computeImpulseDenominator(pos1,cpd->m_frictionWorldTangential0); | 
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| 1290 | btScalar denom1 = body1->computeImpulseDenominator(pos2,cpd->m_frictionWorldTangential0); | 
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| 1291 | btScalar denom = relaxation/(denom0+denom1); | 
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| 1292 | cpd->m_jacDiagABInvTangent0 = denom; | 
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| 1293 |  | 
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| 1294 |  | 
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| 1295 | denom0 = body0->computeImpulseDenominator(pos1,cpd->m_frictionWorldTangential1); | 
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| 1296 | denom1 = body1->computeImpulseDenominator(pos2,cpd->m_frictionWorldTangential1); | 
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| 1297 | denom = relaxation/(denom0+denom1); | 
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| 1298 | cpd->m_jacDiagABInvTangent1 = denom; | 
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| 1299 |  | 
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| 1300 | btVector3 totalImpulse = | 
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| 1301 | #ifndef NO_FRICTION_WARMSTART | 
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| 1302 | cpd->m_frictionWorldTangential0*cpd->m_accumulatedTangentImpulse0+ | 
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| 1303 | cpd->m_frictionWorldTangential1*cpd->m_accumulatedTangentImpulse1+ | 
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| 1304 | #endif //NO_FRICTION_WARMSTART | 
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| 1305 | cp.m_normalWorldOnB*cpd->m_appliedImpulse; | 
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| 1306 |  | 
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| 1307 |  | 
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| 1308 |  | 
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| 1309 | /// | 
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| 1310 | { | 
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| 1311 | btVector3 torqueAxis0 = rel_pos1.cross(cp.m_normalWorldOnB); | 
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| 1312 | cpd->m_angularComponentA = body0->getInvInertiaTensorWorld()*torqueAxis0; | 
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| 1313 | btVector3 torqueAxis1 = rel_pos2.cross(cp.m_normalWorldOnB); | 
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| 1314 | cpd->m_angularComponentB = body1->getInvInertiaTensorWorld()*torqueAxis1; | 
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| 1315 | } | 
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| 1316 | { | 
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| 1317 | btVector3 ftorqueAxis0 = rel_pos1.cross(cpd->m_frictionWorldTangential0); | 
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| 1318 | cpd->m_frictionAngularComponent0A = body0->getInvInertiaTensorWorld()*ftorqueAxis0; | 
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| 1319 | } | 
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| 1320 | { | 
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| 1321 | btVector3 ftorqueAxis1 = rel_pos1.cross(cpd->m_frictionWorldTangential1); | 
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| 1322 | cpd->m_frictionAngularComponent1A = body0->getInvInertiaTensorWorld()*ftorqueAxis1; | 
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| 1323 | } | 
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| 1324 | { | 
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| 1325 | btVector3 ftorqueAxis0 = rel_pos2.cross(cpd->m_frictionWorldTangential0); | 
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| 1326 | cpd->m_frictionAngularComponent0B = body1->getInvInertiaTensorWorld()*ftorqueAxis0; | 
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| 1327 | } | 
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| 1328 | { | 
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| 1329 | btVector3 ftorqueAxis1 = rel_pos2.cross(cpd->m_frictionWorldTangential1); | 
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| 1330 | cpd->m_frictionAngularComponent1B = body1->getInvInertiaTensorWorld()*ftorqueAxis1; | 
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| 1331 | } | 
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| 1332 |  | 
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| 1333 | /// | 
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| 1334 |  | 
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| 1335 |  | 
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| 1336 |  | 
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| 1337 | //apply previous frames impulse on both bodies | 
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| 1338 | body0->applyImpulse(totalImpulse, rel_pos1); | 
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| 1339 | body1->applyImpulse(-totalImpulse, rel_pos2); | 
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| 1340 | } | 
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| 1341 |  | 
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| 1342 | } | 
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| 1343 | } | 
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| 1344 | } | 
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| 1345 |  | 
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| 1346 |  | 
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| 1347 | btScalar btSequentialImpulseConstraintSolver::solveCombinedContactFriction(btRigidBody* body0,btRigidBody* body1, btManifoldPoint& cp, const btContactSolverInfo& info,int iter,btIDebugDraw* debugDrawer) | 
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| 1348 | { | 
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| 1349 | btScalar maxImpulse = btScalar(0.); | 
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| 1350 |  | 
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| 1351 | { | 
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| 1352 |  | 
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| 1353 |  | 
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| 1354 | { | 
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| 1355 | if (cp.getDistance() <= btScalar(0.)) | 
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| 1356 | { | 
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| 1357 |  | 
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| 1358 |  | 
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| 1359 |  | 
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| 1360 | { | 
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| 1361 |  | 
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| 1362 | //btConstraintPersistentData* cpd = (btConstraintPersistentData*) cp.m_userPersistentData; | 
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| 1363 | btScalar impulse = resolveSingleCollisionCombined( | 
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| 1364 | *body0,*body1, | 
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| 1365 | cp, | 
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| 1366 | info); | 
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| 1367 |  | 
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| 1368 | if (maxImpulse < impulse) | 
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| 1369 | maxImpulse  = impulse; | 
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| 1370 |  | 
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| 1371 | } | 
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| 1372 | } | 
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| 1373 | } | 
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| 1374 | } | 
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| 1375 | return maxImpulse; | 
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| 1376 | } | 
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| 1377 |  | 
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| 1378 |  | 
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| 1379 |  | 
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| 1380 | btScalar btSequentialImpulseConstraintSolver::solve(btRigidBody* body0,btRigidBody* body1, btManifoldPoint& cp, const btContactSolverInfo& info,int iter,btIDebugDraw* debugDrawer) | 
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| 1381 | { | 
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| 1382 |  | 
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| 1383 | btScalar maxImpulse = btScalar(0.); | 
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| 1384 |  | 
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| 1385 | { | 
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| 1386 |  | 
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| 1387 |  | 
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| 1388 | { | 
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| 1389 | if (cp.getDistance() <= btScalar(0.)) | 
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| 1390 | { | 
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| 1391 |  | 
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| 1392 |  | 
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| 1393 |  | 
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| 1394 | { | 
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| 1395 |  | 
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| 1396 | btConstraintPersistentData* cpd = (btConstraintPersistentData*) cp.m_userPersistentData; | 
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| 1397 | btScalar impulse = cpd->m_contactSolverFunc( | 
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| 1398 | *body0,*body1, | 
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| 1399 | cp, | 
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| 1400 | info); | 
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| 1401 |  | 
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| 1402 | if (maxImpulse < impulse) | 
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| 1403 | maxImpulse  = impulse; | 
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| 1404 |  | 
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| 1405 | } | 
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| 1406 | } | 
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| 1407 | } | 
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| 1408 | } | 
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| 1409 | return maxImpulse; | 
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| 1410 | } | 
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| 1411 |  | 
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| 1412 | btScalar btSequentialImpulseConstraintSolver::solveFriction(btRigidBody* body0,btRigidBody* body1, btManifoldPoint& cp, const btContactSolverInfo& info,int iter,btIDebugDraw* debugDrawer) | 
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| 1413 | { | 
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| 1414 |  | 
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| 1415 | (void)debugDrawer; | 
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| 1416 | (void)iter; | 
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| 1417 |  | 
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| 1418 |  | 
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| 1419 | { | 
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| 1420 |  | 
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| 1421 |  | 
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| 1422 | { | 
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| 1423 |  | 
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| 1424 | if (cp.getDistance() <= btScalar(0.)) | 
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| 1425 | { | 
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| 1426 |  | 
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| 1427 | btConstraintPersistentData* cpd = (btConstraintPersistentData*) cp.m_userPersistentData; | 
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| 1428 | cpd->m_frictionSolverFunc( | 
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| 1429 | *body0,*body1, | 
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| 1430 | cp, | 
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| 1431 | info); | 
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| 1432 |  | 
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| 1433 |  | 
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| 1434 | } | 
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| 1435 | } | 
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| 1436 |  | 
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| 1437 |  | 
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| 1438 | } | 
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| 1439 | return btScalar(0.); | 
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| 1440 | } | 
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| 1441 |  | 
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| 1442 |  | 
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| 1443 | void    btSequentialImpulseConstraintSolver::reset() | 
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| 1444 | { | 
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| 1445 | m_btSeed2 = 0; | 
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| 1446 | } | 
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| 1447 |  | 
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| 1448 |  | 
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