sampler.h

/*
    Lightmetrica : A research-oriented renderer

    Copyright (c) 2014 Hisanari Otsu

    This program 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 3 of the License, or
    (at your option) any later version.

    This program 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/>.
*/

#pragma once
#ifndef LIB_LIGHTMETRICA_RANDOM_SAMPLER_H
#define LIB_LIGHTMETRICA_RANDOM_SAMPLER_H

#include "component.h"
#include "math.types.h"

LM_NAMESPACE_BEGIN

class Assets;
class ConfigNode;
class Random;

class Sampler : public Component
{
public:

    Sampler() {}
    virtual ~Sampler() {}

private:

    LM_DISABLE_COPY_AND_MOVE(Sampler);

public:

    virtual Sampler* Clone() const = 0;

    virtual void SetSeed(unsigned int seed) = 0;

    virtual Math::Float Next() = 0;

    virtual unsigned int NextUInt() = 0;

    virtual Math::Vec2 NextVec2() = 0;

    virtual Random* Rng() = 0;

public:

    LM_PUBLIC_API void SetSeedWithCurrentTime();

};

LM_NAMESPACE_END

#endif // LIB_LIGHTMETRICA_RANDOM_SAMPLER_H