raycastinchannel.h

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/*
* Copyright 2015 Autodesk, Inc. All rights reserved.
* Use of this software is subject to the terms of the Autodesk license agreement and any attachments or Appendices thereto provided at the time of installation or download,
* or which otherwise accompanies this software in either electronic or hard copy form, or which is signed by you and accepted by Autodesk.
*/

#ifndef Navigation_RayCastInChannel_H
#define Navigation_RayCastInChannel_H

#include "gwnavruntime/channel/channelsectionptr.h"

namespace Kaim
{


enum RayCastInChannelResult
{
    RayCastInChannel_NotInitialised,
    RayCastInChannel_NotProcessed,

    RayCastInChannel_Success,                    

    RayCastInChannel_PassedChannelFirstSection,  
    RayCastInChannel_PassedChannelLastSection,   
    RayCastInChannel_CollisionDetected_OnLeft,   
    RayCastInChannel_CollisionDetected_OnRight,  

    RayCastInChannel_StartIsOutside,              
    RayCastInChannel_InvalidStartSectionIdx,     
    RayCastInChannel_InvalidChannel,             
};

class RayCastInChannel
{
public:
    RayCastInChannel();

    void Initialize(const Vec2f& startPos2f, const Channel* channel, KyUInt32 startSectionIdx, const Vec2f& maxMove2D);

    void Perform();

private:
    void PerformThroughNext();
    void PerformThroughPrevious();
    void PerformAgainstSectionBorders();

    void UpdateArrivalPos(const Vec2f& collisionPos);

    bool IsProperlyInitialized();


public:
    const Channel* m_channel;

    Vec2f m_startPos2f;
    KyUInt32 m_startSectionIdx;

    Vec2f m_maxMove2D;

    Vec2f m_arrivalPos2f;
    KyUInt32 m_arrivalSectionIdx;

    RayCastInChannelResult m_result;
};


} // namespace Kaim

#endif