sampler.h

/*
    This file is part of Nori, a simple educational ray tracer
 
    Copyright (c) 2015 by Wenzel Jakob
 
    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/>.
*/
 
#if !defined(__NORI_SAMPLER_H)
#define __NORI_SAMPLER_H
 
#include <nori/object.h>
#include <memory>
 
NORI_NAMESPACE_BEGIN
 
class ImageBlock;
 
class Sampler : public NoriObject {
public:
    virtual ~Sampler() { }
 
    virtual std::unique_ptr<Sampler> clone() const = 0;
 
    virtual void prepare(const ImageBlock &block) = 0;
 
    virtual void generate() = 0;
 
    virtual void advance() = 0;
 
    virtual float next1D() = 0;
 
    virtual Point2f next2D() = 0;
 
    virtual size_t getSampleCount() const { return m_sampleCount; }
 
    virtual EClassType getClassType() const override { return ESampler; }
protected:
    size_t m_sampleCount;
};
 
NORI_NAMESPACE_END
 
#endif /* __NORI_SAMPLER_H */