arealight.cpp

/*
    This file is part of Nori, a simple educational ray tracer
 
    Copyright (c) 2015 by Romain Prévost
 
    Nori is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License Version 3
    as published by the Free Software Foundation.
 
    Nori 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
 
#include <nori/emitter.h>
#include <nori/warp.h>
#include <nori/shape.h>
 
NORI_NAMESPACE_BEGIN
 
class AreaEmitter : public Emitter {
public:
    AreaEmitter(const PropertyList &props) {
        m_radiance = props.getColor("radiance");
    }
 
    virtual std::string toString() const override {
        return tfm::format(
                "AreaLight[\n"
                "  radiance = %s,\n"
                "]",
                m_radiance.toString());
    }
 
    virtual Color3f eval(const EmitterQueryRecord & lRec) const override {
        if(!m_shape)
            throw NoriException("There is no shape attached to this Area light!");
 
        throw NoriException("To implement...");
    }
 
    virtual Color3f sample(EmitterQueryRecord & lRec, const Point2f & sample) const override {
        if(!m_shape)
            throw NoriException("There is no shape attached to this Area light!");
 
        throw NoriException("To implement...");
    }
 
    virtual float pdf(const EmitterQueryRecord &lRec) const override {
        if(!m_shape)
            throw NoriException("There is no shape attached to this Area light!");
 
        throw NoriException("To implement...");
    }
 
 
    virtual Color3f samplePhoton(Ray3f &ray, const Point2f &sample1, const Point2f &sample2) const override {
        throw NoriException("To implement...");
    }
 
 
protected:
    Color3f m_radiance;
};
 
NORI_REGISTER_CLASS(AreaEmitter, "area")
NORI_NAMESPACE_END