ObjectConstraintHinge.h

//
//  ObjectConstraintHinge.h
//  libraries/physics/src
//
//  Created by Seth Alves 2017-4-11
//  Copyright 2017 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
 
#ifndef hifi_ObjectConstraintHinge_h
#define hifi_ObjectConstraintHinge_h
 
#include "ObjectConstraint.h"
 
// http://bulletphysics.org/Bullet/BulletFull/classbtHingeConstraint.html
 
class ObjectConstraintHinge : public ObjectConstraint {
public:
    ObjectConstraintHinge(const QUuid& id, EntityItemPointer ownerEntity);
    virtual ~ObjectConstraintHinge();
 
    virtual void prepareForPhysicsSimulation() override;
 
    virtual bool updateArguments(QVariantMap arguments) override;
    virtual QVariantMap getArguments() override;
 
    virtual QByteArray serialize() const override;
    virtual void deserialize(QByteArray serializedArguments) override;
 
    virtual QList<btRigidBody*> getRigidBodies() override;
    virtual btTypedConstraint* getConstraint() override;
 
protected:
    static const uint16_t constraintVersion;
 
    void updateHinge();
 
    glm::vec3 _pivotInA;
    glm::vec3 _axisInA;
 
    glm::vec3 _pivotInB;
    glm::vec3 _axisInB;
 
    float _low { -TWO_PI };
    float _high { TWO_PI };
 
    // https://gamedev.stackexchange.com/questions/71436/what-are-the-parameters-for-bthingeconstraintsetlimit
    //
    // softness: unused
    // biasFactor: unused
    // relaxationFactor: unused
};
 
#endif // hifi_ObjectConstraintHinge_h