HumanMatrixGetter.h

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//-----------------------------------------------------------------------------------
//
// Pro-Vocation Light Engine (PVLE)
// Copyright (C) 2007-2009  Sukender, KinoX & Buzib
// For more information, contact us : sukender@free.fr
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// For any use that is not compatible with the terms of the GNU 
// General Public License, please contact the authors for alternative
// licensing options.
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// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
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//-----------------------------------------------------------------------------------

#ifndef INPUT_HUMAN_MATRIX_GETTER_H
#define INPUT_HUMAN_MATRIX_GETTER_H

#include <PVLE/Export.h>
#include <PVLE/Util/Util.h>
#include <PVLE/Input/MatrixGetter.h>
#include <PVLE/Input/ControlMapper.h>


class PVLE_EXPORT HumanMatrixGetter : public MatrixGetter, public ControlHandler {
public:
    HumanMatrixGetter() : EyePos(100,0,10), Dir(-1,0,0), Up(0,0,1), MovingSpeed(50) {}

    virtual bool handleEvent(NetControlEvent * pEvent, TNL::EventConnection * pConnection) { return false; }
    virtual void handleFrame(double elapsed);

    void setByFrame(const osg::Vec3 & EyePos, const osg::Vec3 & Dir, const osg::Vec3 & Up) {
        this->EyePos = EyePos;
        this->Dir = Dir;
        this->Up = Up;

        this->Dir.normalize();
        this->Up.normalize();
    }

    virtual osg::Matrix getMatrix() const { return osg::Matrix::inverse(getInverseMatrix()); }
    virtual osg::Matrix getInverseMatrix() const { return osg::Matrix::lookAt(EyePos, EyePos+Dir, Up) * osg::Matrix::rotate(osg::PI_2, osg::Vec3(1,0,0)); }

    osg::Matrix yawPitchRoll(osg::Vec3::value_type yaw, osg::Vec3::value_type pitch, osg::Vec3::value_type roll) const;

protected:
    osg::Vec3 EyePos, Dir, Up;          

    osg::Vec3::value_type MovingSpeed;              
    static const osg::Vec3::value_type AlphaMin;    
};


#endif  // INPUT_HUMAN_MATRIX_GETTER_H

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