DiffuseSurfaceEmitterBase.h

Go to the documentation of this file.

#pragma once
 
#include "Core/Emitter/SurfaceEmitter.h"
#include "Math/Color/Spectrum.h"
#include "Core/Texture/TTexture.h"
 
namespace ph
{
 
class Primitive;
 
class DiffuseSurfaceEmitterBase : public SurfaceEmitter
{
public:
    explicit DiffuseSurfaceEmitterBase(
        EmitterFeatureSet featureSet = defaultFeatureSet);
 
    void evalEmittedEnergy(const SurfaceHit& Xe, math::Spectrum* out_energy) const override = 0;
 
    void genDirectSample(
        DirectEnergySampleQuery& query,
        SampleFlow& sampleFlow,
        HitProbe& probe) const override = 0;
 
    void calcDirectPdf(DirectEnergyPdfQuery& query) const override = 0;
 
    void emitRay(
        EnergyEmissionSampleQuery& query,
        SampleFlow& sampleFlow,
        HitProbe& probe) const override = 0;
 
protected:
    void evalEnergyFromSurface(
        const TTexture<math::Spectrum>& energy,
        const SurfaceHit& Xe,
        math::Spectrum* out_energy) const;
 
    void genDirectSampleFromSurface(
        const Primitive& surface,
        const TTexture<math::Spectrum>& energy,
        DirectEnergySampleQuery& query,
        SampleFlow& sampleFlow,
        HitProbe& probe) const;
 
    void emitRayFromSurface(
        const Primitive& surface,
        const TTexture<math::Spectrum>& energy,
        EnergyEmissionSampleQuery& query,
        SampleFlow& sampleFlow,
        HitProbe& probe) const;
};
 
}// end namespace ph