volprogram.h

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#ifndef VOLPROGRAM_H
#define VOLPROGRAM_H

#include <glew.h>
#include <string>

class VolProgram {
public:
    enum Mode {
        M_SLICE, 
        M_3D_COLOR_CUBE, 
        M_3D_RAYCAST 
    };

public:

    explicit VolProgram(const char *name);
    ~VolProgram();

    void SetMode(Mode mode);

    void SetVolumeTexture(GLuint texture);

    void SetBackAndFrontTextures(GLuint back, GLuint front);

    void SetTransferFunctionTexture(GLuint tex);

    void Use();

private:
    struct CompileSettings {
        std::string mode; 
    };


    GLuint CompileProgram(const char *name, const CompileSettings& settings) const;

    void RecompileWhenRequired();

private:
    GLuint program_; 
    GLuint volume_texture_; 
    GLuint front_texture_; 
    GLuint back_texture_; 
    GLuint transfer_texture_; 


    Mode mode_;
    bool recompile_;
    std::string progname_; 
};

#endif

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