PathCamera.h

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/*
  Copyright (C) 2009 Jon Macey

    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.

    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, see <http://www.gnu.org/licenses/>.
*/
#ifndef PATHCAMERA_H_
#define PATHCAMERA_H_
//----------------------------------------------------------------------------------------------------------------------
//----------------------------------------------------------------------------------------------------------------------
#include "BezierCurve.h"
#include "Camera.h"

namespace ngl
{
//----------------------------------------------------------------------------------------------------------------------
//----------------------------------------------------------------------------------------------------------------------
class NGL_DLLEXPORT PathCamera : public Camera
{

public :

  PathCamera(){;}
  //----------------------------------------------------------------------------------------------------------------------
  //----------------------------------------------------------------------------------------------------------------------
  PathCamera( const Vec3 &_up, const BezierCurve &_eyePath, const BezierCurve &_lookPath, const Real _step ) noexcept;
  //----------------------------------------------------------------------------------------------------------------------
  //----------------------------------------------------------------------------------------------------------------------
  PathCamera( const Vec3 &_up,Vec3 const *_eyePoints, int _nEyePoints,Vec3 const  *_lookPoints, int _nLookPoints,Real _step) noexcept;

  //----------------------------------------------------------------------------------------------------------------------
  //----------------------------------------------------------------------------------------------------------------------
  PathCamera(  const Vec4 &_up, const std::string &_fName, Real _step ) noexcept;

  //----------------------------------------------------------------------------------------------------------------------
  //----------------------------------------------------------------------------------------------------------------------
  ~PathCamera() noexcept;
  //----------------------------------------------------------------------------------------------------------------------
  //----------------------------------------------------------------------------------------------------------------------
  void update() noexcept;
  //----------------------------------------------------------------------------------------------------------------------
  //----------------------------------------------------------------------------------------------------------------------
  void updateLooped() noexcept;
  //----------------------------------------------------------------------------------------------------------------------
  //----------------------------------------------------------------------------------------------------------------------
  void drawPaths() const noexcept;
  //----------------------------------------------------------------------------------------------------------------------
  //----------------------------------------------------------------------------------------------------------------------
  void loadPath( const std::string &_fName) noexcept;
  //----------------------------------------------------------------------------------------------------------------------
  //----------------------------------------------------------------------------------------------------------------------
  void createCurvesForDrawing( int _lod ) noexcept;

protected:
  //----------------------------------------------------------------------------------------------------------------------
  //----------------------------------------------------------------------------------------------------------------------
  Real m_eyeCurvePoint;
  //----------------------------------------------------------------------------------------------------------------------
  //----------------------------------------------------------------------------------------------------------------------
  Real m_lookCurvePoint;
  //----------------------------------------------------------------------------------------------------------------------
  //----------------------------------------------------------------------------------------------------------------------
  BezierCurve m_eyePath;
  //----------------------------------------------------------------------------------------------------------------------
  BezierCurve m_lookPath;
  //----------------------------------------------------------------------------------------------------------------------
  //----------------------------------------------------------------------------------------------------------------------
  enum  DIRECTION
      {
      CAMFWD,
      CAMBWD
      };
  //----------------------------------------------------------------------------------------------------------------------
  //----------------------------------------------------------------------------------------------------------------------
  DIRECTION m_dir;
  //----------------------------------------------------------------------------------------------------------------------
  //----------------------------------------------------------------------------------------------------------------------
  Real m_step;


};
}
#endif
//----------------------------------------------------------------------------------------------------------------------