Scene.h

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#pragma once
 
#include "Math/math_fwd.h"
#include "Math/Color/Spectrum.h"
 
#include <Common/assertion.h>
#include <Common/primitive_type.h>
 
namespace ph
{
 
class Intersector;
class EmitterSampler;
class HitProbe;
class DirectEnergySampleQuery;
class DirectEnergyPdfQuery;
class EnergyEmissionSampleQuery;
class Ray;
class Emitter;
class Primitive;
class SurfaceHit;
class SampleFlow;
 
class Scene final
{
public:
    Scene();
    Scene(const Intersector* intersector, const EmitterSampler* emitterSampler);
 
    bool isOccluding(const Ray& ray) const;
    bool isIntersecting(const Ray& ray, HitProbe* out_probe) const;
 
    const Emitter* pickEmitter(SampleFlow& sampleFlow, real* out_PDF) const;
 
    void genDirectSample(
        DirectEnergySampleQuery& query, 
        SampleFlow& sampleFlow,
        HitProbe& probe) const;
 
    void calcDirectPdf(DirectEnergyPdfQuery& query) const;
 
    void emitRay(
        EnergyEmissionSampleQuery& query,
        SampleFlow& sampleFlow,
        HitProbe& probe) const;
 
    void setBackgroundPrimitive(const Primitive* const primitive);
 
private:
    const Intersector*    m_intersector;
    const EmitterSampler* m_emitterSampler;
    const Primitive*      m_backgroundPrimitive;
};
 
// In-header Implementations:
 
inline void Scene::setBackgroundPrimitive(const Primitive* const primitive)
{
    m_backgroundPrimitive = primitive;
}
 
}// end namespace ph