File indexing completed on 2024-04-21 14:43:25

 /*
  * box2djoint.h
  * Copyright (c) 2011 Joonas Erkinheimo <joonas.erkinheimo@nokia.com>
  * Copyright (c) 2011 Thorbjørn Lindeijer <thorbjorn@lindeijer.nl>
  *
  * This file is part of the Box2D QML plugin.
  *
  * This software is provided 'as-is', without any express or implied warranty.
  * In no event will the authors be held liable for any damages arising from
  * the use of this software.
  *
  * Permission is granted to anyone to use this software for any purpose,
  * including commercial applications, and to alter it and redistribute it
  * freely, subject to the following restrictions:
  *
  * 1. The origin of this software must not be misrepresented; you must not
  *    claim that you wrote the original software. If you use this software in
  *    a product, an acknowledgment in the product documentation would be
  *    appreciated but is not required.
  *
  * 2. Altered source versions must be plainly marked as such, and must not be
  *    misrepresented as being the original software.
  *
  * 3. This notice may not be removed or altered from any source distribution.
  */
 
 #ifndef BOX2DJOINT_H
 #define BOX2DJOINT_H
 
 #include <QObject>
 #include <QPointF>
 #include <QQmlParserStatus>
 
 #include <Box2D.h>
 
 class b2World;
 class Box2DBody;
 class Box2DWorld;
 
 class Box2DJoint : public QObject, public QQmlParserStatus
 {
     Q_OBJECT
     Q_INTERFACES(QQmlParserStatus)
 
     Q_ENUMS(JointType)
     Q_PROPERTY(JointType jointType READ jointType CONSTANT)
     Q_PROPERTY(bool collideConnected READ collideConnected WRITE setCollideConnected NOTIFY collideConnectedChanged)
     Q_PROPERTY(Box2DBody *bodyA READ bodyA WRITE setBodyA NOTIFY bodyAChanged)
     Q_PROPERTY(Box2DBody *bodyB READ bodyB WRITE setBodyB NOTIFY bodyBChanged)
 
 public:
     enum JointType { // Matches b2JointType
         UnknownJoint,
         RevoluteJoint,
         PrismaticJoint,
         DistanceJoint,
         PulleyJoint,
         MouseJoint,
         GearJoint,
         WheelJoint,
         WeldJoint,
         FrictionJoint,
         RopeJoint,
         MotorJoint
     };
 
     Box2DJoint(JointType jointType, QObject *parent = 0);
     ~Box2DJoint();
 
     JointType jointType() const;
 
     bool collideConnected() const;
     void setCollideConnected(bool collideConnected);
 
     Box2DBody *bodyA() const;
     void setBodyA(Box2DBody *bodyA);
 
     Box2DBody *bodyB() const;
     void setBodyB(Box2DBody *bodyB);
 
     void initialize();
 
     void nullifyJoint();
     Box2DWorld *world() const;
     b2Joint *joint() const;
 
     // QQmlParserStatus interface
     void classBegin() {}
     void componentComplete();
 
 protected:
     virtual b2Joint *createJoint() = 0;
     void initializeJointDef(b2JointDef &def);
 
 private slots:
     void bodyACreated();
     void bodyBCreated();
 
 signals:
     void collideConnectedChanged();
     void bodyAChanged();
     void bodyBChanged();
     void created();
 
 private:
     JointType mJointType;
     bool mCollideConnected;
     bool mComponentComplete;
     bool mInitializePending;
     Box2DBody *mBodyA;
     Box2DBody *mBodyB;
     Box2DWorld *mWorld;
     b2Joint *mJoint;
 };
 
 inline Box2DJoint::JointType Box2DJoint::jointType() const
 {
     return mJointType;
 }
 
 inline bool Box2DJoint::collideConnected() const
 {
     return mCollideConnected;
 }
 
 inline Box2DBody *Box2DJoint::bodyA() const
 {
     return mBodyA;
 }
 
 inline Box2DBody *Box2DJoint::bodyB() const
 {
     return mBodyB;
 }
 
 inline void Box2DJoint::nullifyJoint()
 {
     mJoint = 0;
 }
 
 inline Box2DWorld *Box2DJoint::world() const
 {
     return mWorld;
 }
 
 inline b2Joint *Box2DJoint::joint() const
 {
     return mJoint;
 }
 
 
 /**
  * Convenience function to get the Box2DJoint wrapping a b2Joint.
  */
 inline Box2DJoint *toBox2DJoint(b2Joint *joint)
 {
     return static_cast<Box2DJoint*>(joint->GetUserData());
 }
 
 
 #endif // BOX2DJOINT_H