VRS - The Virtual Rendering System

version 3.3

raytracingtechnique.h

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/******************************************************************************
 * VRS - The Virtual Rendering System
 * Copyright (C) 2000-2007 Computer Graphics Systems Group at the 
 * Hasso-Plattner-Institute (HPI), Potsdam, Germany.
 *
 * This  library  is  free  software; you can redistribute it and/or  modify it
 * under the terms of the GNU Lesser General Public  License  as  published  by
 * the  Free  Software  Foundation;  either  version 2.1 of the License, or (at
 * your option) any later version. This library  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 Lesser General Public License for more details. You should have received
 * a copy of the GNU Lesser+ General Public License along with this library; if
 * not, write to the FreeSoftware Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA, 02111-1307, USA.
 ******************************************************************************/

// $Id: raytracingtechnique.h 6535 2008-10-30 12:48:50Z Haik_Lorenz $

#ifndef VRS_RAYTRACINGTECHNIQUE_H
#define VRS_RAYTRACINGTECHNIQUE_H

#include <vrs/technique.h>
#include <vrs/intersectioninfo.h>
#include <vrs/ray.h>

namespace VRS {

class Engine;
class Shape;

class VRS_CORE_API RayTracingTechnique :
    public Technique
{
public:
    virtual void start(Engine* engine);
    virtual void stop(Engine* engine);

    virtual void setCallback(Callback1<SO<IntersectionInfo> >* callback);
    virtual void registerIntersection(IntersectionInfo* info);
    virtual void registerIntersection(
        const Vector& point,
        const Vector& normal,
        const Ray& ray,
        const Matrix& modelview,
        const Matrix& orientation,
        const Matrix& projection,
        int hint = 0,
        unsigned int instanceInfo = 0,
        UINT32 id = 0
    );
    static bool checkBounds(const Ray& ray, const Bounds& bbox);

    VRS_TYPEINFO(RayTracingTechnique, Technique);

protected:
    void intersect(Engine*, const Shape*, const Ray&);
    void check (
        Engine*,
        const Matrix&,
        const Matrix&,
        const Matrix&,
        const Shape*,
        const Ray&
    );
private:
    SO<Callback1<SO<IntersectionInfo> > > callback_;
    SO<Shape> realShape_;
};

} // namespace VRS

#endif // VRS_RAYTRACINGTECHNIQUE_H

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