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Diffstat (limited to 'thirdparty/bullet/BulletDynamics/ConstraintSolver/btHingeConstraint.h')
-rw-r--r-- | thirdparty/bullet/BulletDynamics/ConstraintSolver/btHingeConstraint.h | 503 |
1 files changed, 503 insertions, 0 deletions
diff --git a/thirdparty/bullet/BulletDynamics/ConstraintSolver/btHingeConstraint.h b/thirdparty/bullet/BulletDynamics/ConstraintSolver/btHingeConstraint.h new file mode 100644 index 0000000000..3c3df24dba --- /dev/null +++ b/thirdparty/bullet/BulletDynamics/ConstraintSolver/btHingeConstraint.h @@ -0,0 +1,503 @@ +/* +Bullet Continuous Collision Detection and Physics Library +Copyright (c) 2003-2006 Erwin Coumans http://continuousphysics.com/Bullet/ + +This software is provided 'as-is', without any express or implied warranty. +In no event will the authors be held liable for any damages arising from the use of this software. +Permission is granted to anyone to use this software for any purpose, +including commercial applications, and to alter it and redistribute it freely, +subject to the following restrictions: + +1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. +2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. +3. This notice may not be removed or altered from any source distribution. +*/ + +/* Hinge Constraint by Dirk Gregorius. Limits added by Marcus Hennix at Starbreeze Studios */ + +#ifndef BT_HINGECONSTRAINT_H +#define BT_HINGECONSTRAINT_H + +#define _BT_USE_CENTER_LIMIT_ 1 + + +#include "LinearMath/btVector3.h" +#include "btJacobianEntry.h" +#include "btTypedConstraint.h" + +class btRigidBody; + +#ifdef BT_USE_DOUBLE_PRECISION +#define btHingeConstraintData btHingeConstraintDoubleData2 //rename to 2 for backwards compatibility, so we can still load the 'btHingeConstraintDoubleData' version +#define btHingeConstraintDataName "btHingeConstraintDoubleData2" +#else +#define btHingeConstraintData btHingeConstraintFloatData +#define btHingeConstraintDataName "btHingeConstraintFloatData" +#endif //BT_USE_DOUBLE_PRECISION + + + +enum btHingeFlags +{ + BT_HINGE_FLAGS_CFM_STOP = 1, + BT_HINGE_FLAGS_ERP_STOP = 2, + BT_HINGE_FLAGS_CFM_NORM = 4, + BT_HINGE_FLAGS_ERP_NORM = 8 +}; + + +/// hinge constraint between two rigidbodies each with a pivotpoint that descibes the axis location in local space +/// axis defines the orientation of the hinge axis +ATTRIBUTE_ALIGNED16(class) btHingeConstraint : public btTypedConstraint +{ +#ifdef IN_PARALLELL_SOLVER +public: +#endif + btJacobianEntry m_jac[3]; //3 orthogonal linear constraints + btJacobianEntry m_jacAng[3]; //2 orthogonal angular constraints+ 1 for limit/motor + + btTransform m_rbAFrame; // constraint axii. Assumes z is hinge axis. + btTransform m_rbBFrame; + + btScalar m_motorTargetVelocity; + btScalar m_maxMotorImpulse; + + +#ifdef _BT_USE_CENTER_LIMIT_ + btAngularLimit m_limit; +#else + btScalar m_lowerLimit; + btScalar m_upperLimit; + btScalar m_limitSign; + btScalar m_correction; + + btScalar m_limitSoftness; + btScalar m_biasFactor; + btScalar m_relaxationFactor; + + bool m_solveLimit; +#endif + + btScalar m_kHinge; + + + btScalar m_accLimitImpulse; + btScalar m_hingeAngle; + btScalar m_referenceSign; + + bool m_angularOnly; + bool m_enableAngularMotor; + bool m_useSolveConstraintObsolete; + bool m_useOffsetForConstraintFrame; + bool m_useReferenceFrameA; + + btScalar m_accMotorImpulse; + + int m_flags; + btScalar m_normalCFM; + btScalar m_normalERP; + btScalar m_stopCFM; + btScalar m_stopERP; + + +public: + + BT_DECLARE_ALIGNED_ALLOCATOR(); + + btHingeConstraint(btRigidBody& rbA,btRigidBody& rbB, const btVector3& pivotInA,const btVector3& pivotInB, const btVector3& axisInA,const btVector3& axisInB, bool useReferenceFrameA = false); + + btHingeConstraint(btRigidBody& rbA,const btVector3& pivotInA,const btVector3& axisInA, bool useReferenceFrameA = false); + + btHingeConstraint(btRigidBody& rbA,btRigidBody& rbB, const btTransform& rbAFrame, const btTransform& rbBFrame, bool useReferenceFrameA = false); + + btHingeConstraint(btRigidBody& rbA,const btTransform& rbAFrame, bool useReferenceFrameA = false); + + + virtual void buildJacobian(); + + virtual void getInfo1 (btConstraintInfo1* info); + + void getInfo1NonVirtual(btConstraintInfo1* info); + + virtual void getInfo2 (btConstraintInfo2* info); + + void getInfo2NonVirtual(btConstraintInfo2* info,const btTransform& transA,const btTransform& transB,const btVector3& angVelA,const btVector3& angVelB); + + void getInfo2Internal(btConstraintInfo2* info,const btTransform& transA,const btTransform& transB,const btVector3& angVelA,const btVector3& angVelB); + void getInfo2InternalUsingFrameOffset(btConstraintInfo2* info,const btTransform& transA,const btTransform& transB,const btVector3& angVelA,const btVector3& angVelB); + + + void updateRHS(btScalar timeStep); + + const btRigidBody& getRigidBodyA() const + { + return m_rbA; + } + const btRigidBody& getRigidBodyB() const + { + return m_rbB; + } + + btRigidBody& getRigidBodyA() + { + return m_rbA; + } + + btRigidBody& getRigidBodyB() + { + return m_rbB; + } + + btTransform& getFrameOffsetA() + { + return m_rbAFrame; + } + + btTransform& getFrameOffsetB() + { + return m_rbBFrame; + } + + void setFrames(const btTransform& frameA, const btTransform& frameB); + + void setAngularOnly(bool angularOnly) + { + m_angularOnly = angularOnly; + } + + void enableAngularMotor(bool enableMotor,btScalar targetVelocity,btScalar maxMotorImpulse) + { + m_enableAngularMotor = enableMotor; + m_motorTargetVelocity = targetVelocity; + m_maxMotorImpulse = maxMotorImpulse; + } + + // extra motor API, including ability to set a target rotation (as opposed to angular velocity) + // note: setMotorTarget sets angular velocity under the hood, so you must call it every tick to + // maintain a given angular target. + void enableMotor(bool enableMotor) { m_enableAngularMotor = enableMotor; } + void setMaxMotorImpulse(btScalar maxMotorImpulse) { m_maxMotorImpulse = maxMotorImpulse; } + void setMotorTargetVelocity(btScalar motorTargetVelocity) { m_motorTargetVelocity = motorTargetVelocity; } + void setMotorTarget(const btQuaternion& qAinB, btScalar dt); // qAinB is rotation of body A wrt body B. + void setMotorTarget(btScalar targetAngle, btScalar dt); + + + void setLimit(btScalar low,btScalar high,btScalar _softness = 0.9f, btScalar _biasFactor = 0.3f, btScalar _relaxationFactor = 1.0f) + { +#ifdef _BT_USE_CENTER_LIMIT_ + m_limit.set(low, high, _softness, _biasFactor, _relaxationFactor); +#else + m_lowerLimit = btNormalizeAngle(low); + m_upperLimit = btNormalizeAngle(high); + m_limitSoftness = _softness; + m_biasFactor = _biasFactor; + m_relaxationFactor = _relaxationFactor; +#endif + } + + btScalar getLimitSoftness() const + { +#ifdef _BT_USE_CENTER_LIMIT_ + return m_limit.getSoftness(); +#else + return m_limitSoftness; +#endif + } + + btScalar getLimitBiasFactor() const + { +#ifdef _BT_USE_CENTER_LIMIT_ + return m_limit.getBiasFactor(); +#else + return m_biasFactor; +#endif + } + + btScalar getLimitRelaxationFactor() const + { +#ifdef _BT_USE_CENTER_LIMIT_ + return m_limit.getRelaxationFactor(); +#else + return m_relaxationFactor; +#endif + } + + void setAxis(btVector3& axisInA) + { + btVector3 rbAxisA1, rbAxisA2; + btPlaneSpace1(axisInA, rbAxisA1, rbAxisA2); + btVector3 pivotInA = m_rbAFrame.getOrigin(); +// m_rbAFrame.getOrigin() = pivotInA; + m_rbAFrame.getBasis().setValue( rbAxisA1.getX(),rbAxisA2.getX(),axisInA.getX(), + rbAxisA1.getY(),rbAxisA2.getY(),axisInA.getY(), + rbAxisA1.getZ(),rbAxisA2.getZ(),axisInA.getZ() ); + + btVector3 axisInB = m_rbA.getCenterOfMassTransform().getBasis() * axisInA; + + btQuaternion rotationArc = shortestArcQuat(axisInA,axisInB); + btVector3 rbAxisB1 = quatRotate(rotationArc,rbAxisA1); + btVector3 rbAxisB2 = axisInB.cross(rbAxisB1); + + m_rbBFrame.getOrigin() = m_rbB.getCenterOfMassTransform().inverse()(m_rbA.getCenterOfMassTransform()(pivotInA)); + + m_rbBFrame.getBasis().setValue( rbAxisB1.getX(),rbAxisB2.getX(),axisInB.getX(), + rbAxisB1.getY(),rbAxisB2.getY(),axisInB.getY(), + rbAxisB1.getZ(),rbAxisB2.getZ(),axisInB.getZ() ); + m_rbBFrame.getBasis() = m_rbB.getCenterOfMassTransform().getBasis().inverse() * m_rbBFrame.getBasis(); + + } + + bool hasLimit() const { +#ifdef _BT_USE_CENTER_LIMIT_ + return m_limit.getHalfRange() > 0; +#else + return m_lowerLimit <= m_upperLimit; +#endif + } + + btScalar getLowerLimit() const + { +#ifdef _BT_USE_CENTER_LIMIT_ + return m_limit.getLow(); +#else + return m_lowerLimit; +#endif + } + + btScalar getUpperLimit() const + { +#ifdef _BT_USE_CENTER_LIMIT_ + return m_limit.getHigh(); +#else + return m_upperLimit; +#endif + } + + + ///The getHingeAngle gives the hinge angle in range [-PI,PI] + btScalar getHingeAngle(); + + btScalar getHingeAngle(const btTransform& transA,const btTransform& transB); + + void testLimit(const btTransform& transA,const btTransform& transB); + + + const btTransform& getAFrame() const { return m_rbAFrame; }; + const btTransform& getBFrame() const { return m_rbBFrame; }; + + btTransform& getAFrame() { return m_rbAFrame; }; + btTransform& getBFrame() { return m_rbBFrame; }; + + inline int getSolveLimit() + { +#ifdef _BT_USE_CENTER_LIMIT_ + return m_limit.isLimit(); +#else + return m_solveLimit; +#endif + } + + inline btScalar getLimitSign() + { +#ifdef _BT_USE_CENTER_LIMIT_ + return m_limit.getSign(); +#else + return m_limitSign; +#endif + } + + inline bool getAngularOnly() + { + return m_angularOnly; + } + inline bool getEnableAngularMotor() + { + return m_enableAngularMotor; + } + inline btScalar getMotorTargetVelocity() + { + return m_motorTargetVelocity; + } + inline btScalar getMaxMotorImpulse() + { + return m_maxMotorImpulse; + } + // access for UseFrameOffset + bool getUseFrameOffset() { return m_useOffsetForConstraintFrame; } + void setUseFrameOffset(bool frameOffsetOnOff) { m_useOffsetForConstraintFrame = frameOffsetOnOff; } + // access for UseReferenceFrameA + bool getUseReferenceFrameA() const { return m_useReferenceFrameA; } + void setUseReferenceFrameA(bool useReferenceFrameA) { m_useReferenceFrameA = useReferenceFrameA; } + + ///override the default global value of a parameter (such as ERP or CFM), optionally provide the axis (0..5). + ///If no axis is provided, it uses the default axis for this constraint. + virtual void setParam(int num, btScalar value, int axis = -1); + ///return the local value of parameter + virtual btScalar getParam(int num, int axis = -1) const; + + virtual int getFlags() const + { + return m_flags; + } + + virtual int calculateSerializeBufferSize() const; + + ///fills the dataBuffer and returns the struct name (and 0 on failure) + virtual const char* serialize(void* dataBuffer, btSerializer* serializer) const; + + +}; + + +//only for backward compatibility +#ifdef BT_BACKWARDS_COMPATIBLE_SERIALIZATION +///this structure is not used, except for loading pre-2.82 .bullet files +struct btHingeConstraintDoubleData +{ + btTypedConstraintData m_typeConstraintData; + btTransformDoubleData m_rbAFrame; // constraint axii. Assumes z is hinge axis. + btTransformDoubleData m_rbBFrame; + int m_useReferenceFrameA; + int m_angularOnly; + int m_enableAngularMotor; + float m_motorTargetVelocity; + float m_maxMotorImpulse; + + float m_lowerLimit; + float m_upperLimit; + float m_limitSoftness; + float m_biasFactor; + float m_relaxationFactor; + +}; +#endif //BT_BACKWARDS_COMPATIBLE_SERIALIZATION + +///The getAccumulatedHingeAngle returns the accumulated hinge angle, taking rotation across the -PI/PI boundary into account +ATTRIBUTE_ALIGNED16(class) btHingeAccumulatedAngleConstraint : public btHingeConstraint +{ +protected: + btScalar m_accumulatedAngle; +public: + + BT_DECLARE_ALIGNED_ALLOCATOR(); + + btHingeAccumulatedAngleConstraint(btRigidBody& rbA,btRigidBody& rbB, const btVector3& pivotInA,const btVector3& pivotInB, const btVector3& axisInA,const btVector3& axisInB, bool useReferenceFrameA = false) + :btHingeConstraint(rbA,rbB,pivotInA,pivotInB, axisInA,axisInB, useReferenceFrameA ) + { + m_accumulatedAngle=getHingeAngle(); + } + + btHingeAccumulatedAngleConstraint(btRigidBody& rbA,const btVector3& pivotInA,const btVector3& axisInA, bool useReferenceFrameA = false) + :btHingeConstraint(rbA,pivotInA,axisInA, useReferenceFrameA) + { + m_accumulatedAngle=getHingeAngle(); + } + + btHingeAccumulatedAngleConstraint(btRigidBody& rbA,btRigidBody& rbB, const btTransform& rbAFrame, const btTransform& rbBFrame, bool useReferenceFrameA = false) + :btHingeConstraint(rbA,rbB, rbAFrame, rbBFrame, useReferenceFrameA ) + { + m_accumulatedAngle=getHingeAngle(); + } + + btHingeAccumulatedAngleConstraint(btRigidBody& rbA,const btTransform& rbAFrame, bool useReferenceFrameA = false) + :btHingeConstraint(rbA,rbAFrame, useReferenceFrameA ) + { + m_accumulatedAngle=getHingeAngle(); + } + btScalar getAccumulatedHingeAngle(); + void setAccumulatedHingeAngle(btScalar accAngle); + virtual void getInfo1 (btConstraintInfo1* info); + +}; + +struct btHingeConstraintFloatData +{ + btTypedConstraintData m_typeConstraintData; + btTransformFloatData m_rbAFrame; // constraint axii. Assumes z is hinge axis. + btTransformFloatData m_rbBFrame; + int m_useReferenceFrameA; + int m_angularOnly; + + int m_enableAngularMotor; + float m_motorTargetVelocity; + float m_maxMotorImpulse; + + float m_lowerLimit; + float m_upperLimit; + float m_limitSoftness; + float m_biasFactor; + float m_relaxationFactor; + +}; + + + +///do not change those serialization structures, it requires an updated sBulletDNAstr/sBulletDNAstr64 +struct btHingeConstraintDoubleData2 +{ + btTypedConstraintDoubleData m_typeConstraintData; + btTransformDoubleData m_rbAFrame; // constraint axii. Assumes z is hinge axis. + btTransformDoubleData m_rbBFrame; + int m_useReferenceFrameA; + int m_angularOnly; + int m_enableAngularMotor; + double m_motorTargetVelocity; + double m_maxMotorImpulse; + + double m_lowerLimit; + double m_upperLimit; + double m_limitSoftness; + double m_biasFactor; + double m_relaxationFactor; + char m_padding1[4]; + +}; + + + + +SIMD_FORCE_INLINE int btHingeConstraint::calculateSerializeBufferSize() const +{ + return sizeof(btHingeConstraintData); +} + + ///fills the dataBuffer and returns the struct name (and 0 on failure) +SIMD_FORCE_INLINE const char* btHingeConstraint::serialize(void* dataBuffer, btSerializer* serializer) const +{ + btHingeConstraintData* hingeData = (btHingeConstraintData*)dataBuffer; + btTypedConstraint::serialize(&hingeData->m_typeConstraintData,serializer); + + m_rbAFrame.serialize(hingeData->m_rbAFrame); + m_rbBFrame.serialize(hingeData->m_rbBFrame); + + hingeData->m_angularOnly = m_angularOnly; + hingeData->m_enableAngularMotor = m_enableAngularMotor; + hingeData->m_maxMotorImpulse = float(m_maxMotorImpulse); + hingeData->m_motorTargetVelocity = float(m_motorTargetVelocity); + hingeData->m_useReferenceFrameA = m_useReferenceFrameA; +#ifdef _BT_USE_CENTER_LIMIT_ + hingeData->m_lowerLimit = float(m_limit.getLow()); + hingeData->m_upperLimit = float(m_limit.getHigh()); + hingeData->m_limitSoftness = float(m_limit.getSoftness()); + hingeData->m_biasFactor = float(m_limit.getBiasFactor()); + hingeData->m_relaxationFactor = float(m_limit.getRelaxationFactor()); +#else + hingeData->m_lowerLimit = float(m_lowerLimit); + hingeData->m_upperLimit = float(m_upperLimit); + hingeData->m_limitSoftness = float(m_limitSoftness); + hingeData->m_biasFactor = float(m_biasFactor); + hingeData->m_relaxationFactor = float(m_relaxationFactor); +#endif + + // Fill padding with zeros to appease msan. +#ifdef BT_USE_DOUBLE_PRECISION + hingeData->m_padding1[0] = 0; + hingeData->m_padding1[1] = 0; + hingeData->m_padding1[2] = 0; + hingeData->m_padding1[3] = 0; +#endif + + return btHingeConstraintDataName; +} + +#endif //BT_HINGECONSTRAINT_H |