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GLRenderer.h

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/*
    File:           GLRenderer.h

    Function:       Implements an OpenGL renderer. This is still an abstract 
                    object: the MakeCurrent() method must be overridden to set
                    up the GL context.
    
    Author(s):      Andrew Willmott

    Copyright:      (c) 1997-2000, Andrew Willmott
 */

#ifndef __GLRenderer__
#define __GLRenderer__

#include "gcl/GCLConfig.h"
#ifndef GCL_NO_GL
#include "gcl/Renderer.h"
#include <GL/gl.h>


// --- The GLRenderer class ---------------------------------------------------


class GLRenderer : public Renderer
{
public:
    GLRenderer(Int w = 100, Int h = 100);
    
    Void                Init();
    virtual Void        Show();
    virtual Void        Print(ostream &s);
    virtual Renderer    &Begin(RenderStyle style);
    virtual Renderer    &End();

    virtual Renderer    &SetPoint(const Point &p);
    virtual Renderer    &SetNormal(const Point &p);
    virtual Renderer    &SetCoord(const Coord &c);
    virtual Renderer    &SetTexCoord(const Coord &c);
    virtual Renderer    &SetColour(const Colour &c);
    virtual Renderer    &SetColour(const Colour4 &c);

    virtual Renderer    &SetTransform(const Transform &t);
    virtual Renderer    &SetCamera(const Camera &c);
    virtual Renderer    &SetTexture(const Image *image);

    virtual Renderer    &Clear();
    virtual Renderer    &Pop();
    virtual Renderer    &Push();

    virtual Renderer    &GetImage(Image &image);
    virtual Renderer    &PutImage(const Image &image, Int x, Int y);

    // GL-specific calls

    Void                SetHeadlight(Bool on);
    Void                SetDoubleSided(Bool on);
        
protected:
    Int     glHeight;
    Int     glWidth;
    const Image *oldImage;
};

#endif
#endif

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