ParallelEmittance.h

Go to the documentation of this file.

/* $Id:$ */

#ifndef __PARALLEL_EMITTANCE_H
#define __PARALLEL_EMITTANCE_H

#include <esg/emittance/Emittance.h>

/*
 * Emittance of parallel beam at infinity.
 */

namespace esg {

class ParallelEmittance : public Emittance {
protected:
    virtual void _duplicate_attributes (const Emittance& src) {
        Emittance::_duplicate_attributes(src);
    }

    ParallelEmittance () {}

public:
    ParallelEmittance (const Vector3&  dir,
                       const Color3f&  inten = Color3f(1,1,1))
        : Emittance(Vector3(0,0,0), false, dir, true, inten) {}

    virtual Emittance* clone () const {
        ParallelEmittance * pRet = new ParallelEmittance();
        pRet->_duplicate_attributes(*this);
        return pRet;
    }

    virtual bool intensity (const Vector3&   /* view point */,
                            Color3f&       c /* intensity  */) const
    {
        c.set(_intensity);
        return true;
    }

    virtual bool intensity (const Vector3&   /* emittance direction */,
                            float            /* emittance distance  */,
                            Color3f&       c /* intensity           */) const
    {
        c.set(_intensity);
        return true;
    }
    
    virtual bool stochasticEmission (Vector3& d)
    {
        d.set(_direction);
        return true;
    }
};
    
}; // namespace

#endif //__PARALLEL_EMITTANCE_H

---