OmniModulatedEmitter.h

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#pragma once
 
#include "Core/Emitter/Emitter.h"
#include "Core/Texture/TTexture.h"
#include "Core/Intersection/UvwMapper/SphericalMapper.h"
 
#include <Common/assertion.h>
#include <Common/primitive_type.h>
 
#include <memory>
 
namespace ph
{
 
class OmniModulatedEmitter : public Emitter
{
public:
    explicit OmniModulatedEmitter(const Emitter* source);
 
    OmniModulatedEmitter(
        const Emitter*    source,
        EmitterFeatureSet featureSet);
 
    void evalEmittedEnergy(const SurfaceHit& Xe, math::Spectrum* out_energy) const override;
 
    void genDirectSample(
        DirectEnergySampleQuery& query,
        SampleFlow& sampleFlow,
        HitProbe& probe) const override;
 
    void calcDirectPdf(DirectEnergyPdfQuery& query) const override;
 
    void emitRay(
        EnergyEmissionSampleQuery& query,
        SampleFlow& sampleFlow,
        HitProbe& probe) const override;
 
    real calcRadiantFluxApprox() const override;
 
    void setFilter(const std::shared_ptr<TTexture<math::Spectrum>>& filter);
 
    const Emitter& getSource() const;
 
private:
    const Emitter*                            m_source;
    std::shared_ptr<TTexture<math::Spectrum>> m_filter;
    SphericalMapper                           m_dirToUv;
};
 
inline const Emitter& OmniModulatedEmitter::getSource() const
{
    PH_ASSERT(m_source);
    return *m_source;
}
 
}// end namespace ph