basicsurfaceshader.h

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/*
    toxic - A Global Illumination Renderer
    Copyright (C) 2003-2004 Francois Beaune
    Contact: http://toxicengine.sourceforge.net/

    This file is part of toxic.

    toxic 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 2 of the License, or
    (at your option) any later version.

    toxic 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 toxic; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#ifndef TOXIC_RENDERER_BASICSURFACESHADER_H
#define TOXIC_RENDERER_BASICSURFACESHADER_H

#include "globals.h"
#include "isurfaceshader.h"
#include "itexture.h"

#include <cassert>

namespace toxic {

    class Color3;
    class Hit;
    class IBDF;
    class IEDF;
    //class SurfaceBasis;

    class BasicSurfaceShader : public ISurfaceShader {
    public:
        BasicSurfaceShader(
            const IEDF *edf,
            const Color3 &radiant_exitance,
            const IBDF *bdf,
            const ITexture *reflectance);

        virtual ~BasicSurfaceShader() {}

        virtual BasicSurfaceShader *Clone() const;

        const IBDF *GetBDF() const;
        const ITexture *GetReflectance() const;

        virtual void Shade(
            const Hit &hit,
            ShadingData *shadingdata) const;

    private:
        //! Reflection properties.
        const IBDF *m_bdf;              //!< A BRDF, a BTDF or a BSDF, expressed in sr^-1.
        const ITexture *m_reflectance;  //!< Reflectance (either for reflection or transmission), unit-less.
    };

#include "basicsurfaceshader.inl"

}

#endif  // !TOXIC_RENDERER_BASICSURFACESHADER_H

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