PerspectiveCamera.h

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#ifndef DEF_PERSPECTIVECAMERA
#define DEF_PERSPECTIVECAMERA
 
#include "Ray.h"
 
class PerspectiveCamera {
private:
    unsigned int numberPixelsX, numberPixelsY;
    DoubleVec3D origin, focal;
 
    // See my TM's report for an explanation of these variables.
    DoubleUnitVec3D baseX;
    DoubleUnitVec3D baseY;
    void computeBases();
 
public:
    PerspectiveCamera();
    PerspectiveCamera(unsigned int numberPixelsX, unsigned int numberPixelsY, DoubleVec3D origin = DoubleVec3D(0.0), DoubleVec3D focal = DoubleVec3D(0, 0, -0.75));
    PerspectiveCamera(const PerspectiveCamera& camera);
    
    unsigned int getNumberPixelsX() const;
    unsigned int getNumberPixelsY() const;
    DoubleVec3D getOrigin() const;
    DoubleVec3D getFocal() const;
    double getWorldWidth() const;
    double getWorldHeight() const;
 
    void setNumberPixelsX(unsigned int numberPixelsX);
    void setNumberPixelsY(unsigned int numberPixelsY);
    void setOrigin(DoubleVec3D origin);
    void setFocal(DoubleVec3D focal);
 
    Ray getRayGoingThrough(double pixelX, double pixelY) const;
};
 
#endif