LbLayeredSurface.h

Go to the documentation of this file.

#pragma once
 
#include "Core/SurfaceBehavior/SurfaceOptics.h"
#include "Math/Color/Spectrum.h"
#include "Core/SurfaceBehavior/SurfaceOptics/LaurentBelcour/LbLayer.h"
 
#include <Common/primitive_type.h>
 
#include <vector>
 
namespace ph
{
 
class LbLayeredSurface : public SurfaceOptics
{
public:
    LbLayeredSurface(
        const std::vector<math::Spectrum>& iorNs,
        const std::vector<math::Spectrum>& iorKs,
        const std::vector<real>&           alphas,
        const std::vector<real>&           depths,
        const std::vector<real>&           gs,
        const std::vector<math::Spectrum>& sigmaAs,
        const std::vector<math::Spectrum>& sigmaSs);
 
    ESurfacePhenomenon getPhenomenonOf(SurfaceElemental elemental) const override;
 
    std::string toString() const override;
 
private:
    void calcBsdf(
        const BsdfQueryContext& ctx,
        const BsdfEvalInput&    in,
        BsdfEvalOutput&         out) const override;
 
    void genBsdfSample(
        const BsdfQueryContext& ctx,
        const BsdfSampleInput&  in,
        SampleFlow&             sampleFlow,
        BsdfSampleOutput&       out) const override;
 
    void calcBsdfPdf(
        const BsdfQueryContext& ctx,
        const BsdfPdfInput&     in,
        BsdfPdfOutput&          out) const override;
 
    std::vector<math::Spectrum> m_iorNs;
    std::vector<math::Spectrum> m_iorKs;
    std::vector<real>           m_alphas;
    std::vector<real>           m_depths;
    std::vector<real>           m_gs;
    std::vector<math::Spectrum> m_sigmaAs;
    std::vector<math::Spectrum> m_sigmaSs;
 
    static thread_local std::vector<real> sampleWeights;
    static thread_local std::vector<real> alphas;
 
    std::size_t numLayers() const;
    LbLayer getLayer(std::size_t layerIndex, const LbLayer& previousLayer) const;
};
 
// In-header Implementations:
 
inline std::size_t LbLayeredSurface::numLayers() const
{
    return m_alphas.size();
}
 
inline std::string LbLayeredSurface::toString() const
{
    return "L.B. Layered Surface, " + SurfaceOptics::toString();
}
 
}// end namespace ph