renderutils.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_RENDER_UTILS_H
#define LIB_LIGHTMETRICA_RENDER_UTILS_H

#include "common.h"
#include "math.types.h"

LM_NAMESPACE_BEGIN

struct SurfaceGeometry;
class Scene;

class LM_PUBLIC_API RenderUtils
{
private:

    RenderUtils();
    ~RenderUtils();

    LM_DISABLE_COPY_AND_MOVE(RenderUtils);

public:

    static Math::Float GeneralizedGeometryTerm(const SurfaceGeometry& geom1, const SurfaceGeometry& geom2);

    static Math::Float GeneralizedGeometryTermWithVisibility(const Scene& scene, const SurfaceGeometry& geom1, const SurfaceGeometry& geom2);

    static bool Visible(const Scene& scene, const Math::Vec3& p1, const Math::Vec3& p2);

};

LM_NAMESPACE_END

#endif // LIB_LIGHTMETRICA_RENDER_UTILS_H