include/VR3Camera.h

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// Copyright (C) 2010  Daniele Giannetti
//
// This file is part of VR3Lib.
// The VR3Lib is free software, but is distributed in the static precompiled 
// version as it is NOT open source. The VR3Lib may be used in any virtual 
// reality application free of charge, but it must be clearly stated that this 
// library is used in the application EULA and distribution license 
// (for both free and proprietary applications).

#ifndef __VR3CAMERA_H__
#define __VR3CAMERA_H__


class VR3Camera {

    GLfloat    m_fovy;
    GLfloat    m_near;
    GLfloat    m_far;
    GLfloat    m_pos[3];
    GLfloat    m_up[3];
    int m_mode;
    union {
        GLfloat    m_target[3];
        GLfloat    m_direction[3];
    } m_param;

    VR3Camera(const VR3Camera&);
    VR3Camera& operator = (const VR3Camera&);

// --------------------------- Utility Functions -----------------------------//




    void CheckTarget();


    void CheckUpVector();


public:

// ------------------------------ Constructor --------------------------------//




    VR3Camera();


// --------------------------- General Functions -----------------------------//




    GLfloat GetFovY() { return m_fovy; }


    void SetFovY(GLfloat fov) { m_fovy = fov; }


    GLfloat GetZNear() { return m_near; }


    void SetZNear(GLfloat znear) { m_near = znear; }


    GLfloat    GetZFar() { return m_far; }


    void SetZFar(GLfloat zfar) { m_far = zfar; }


    void GetPosition(GLfloat *p);


    const GLfloat* GetPosition() { return m_pos; }


    void SetPosition(GLfloat x, GLfloat y, GLfloat z);


    void SetPosition(const GLfloat *point);
    

    const GLfloat* GetUpVector() { return m_up; }


    void SetUpVector(GLfloat x, GLfloat y, GLfloat z);


    void SetUpVector(const GLfloat *up);


    void GetXAxis(GLfloat *a);


    void GetYAxis(GLfloat *a);


    void GetZAxis(GLfloat *a);


    void GetDirection(GLfloat *v);


    int GetMode() { return m_mode; }


//-------------------------- Free Camera Functions ---------------------------//




    void Free();


    void SetDirection(GLfloat x, GLfloat y, GLfloat z);


    void SetDirection(const GLfloat *dir);


    void RotateGlobal(GLfloat ang, GLfloat x, GLfloat y, GLfloat z);


    void RotateGlobal(GLfloat a, const GLfloat* d) { RotateGlobal(a, d[0], d[1], d[2]); }


    void RotateLocal(GLfloat ang, GLfloat x, GLfloat y, GLfloat z);


    void RotateLocal(GLfloat a, const GLfloat* d) { RotateLocal(a, d[0], d[1], d[2]); }


//------------------------ Targeted Camera Functions -------------------------//




    void LookAt();


    const GLfloat* GetTarget();


    void SetTarget(GLfloat x, GLfloat y, GLfloat z);


    void SetTarget(const GLfloat *t);


// -------------------------- Matrix Extraction ------------------------------//




    void GetViewMatrix(GLfloat* m);

};

#endif