Primitive.h

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#pragma once
 
#include "Core/Intersection/Intersectable.h"
#include "Math/TVector3.h"
#include "Math/Geometry/TAABB3D.h"
 
#include <Common/primitive_type.h>
 
namespace ph
{
 
class Ray;
class HitProbe;
class HitDetail;
class PrimitiveMetadata;
class PrimitivePosSampleQuery;
class PrimitivePosPdfQuery;
class SampleFlow;
 
class Primitive : public Intersectable
{
public:
    bool isIntersecting(const Ray& ray, HitProbe& probe) const override = 0;
 
    void calcHitDetail(
        const Ray& ray, 
        HitProbe&  probe,
        HitDetail* out_detail) const override = 0;
 
    bool reintersect(
        const Ray& ray,
        HitProbe& probe,
        const Ray& srcRay,
        HitProbe& srcProbe) const override = 0;
 
    math::AABB3D calcAABB() const override = 0;
 
    virtual void genPosSample(
        PrimitivePosSampleQuery& query, 
        SampleFlow& sampleFlow,
        HitProbe& probe) const;
 
    virtual void calcPosPdf(PrimitivePosPdfQuery& query) const;
 
    virtual real calcExtendedArea() const;
 
    virtual const PrimitiveMetadata* getMetadata() const;
};
 
// In-header Implementation:
 
inline real Primitive::calcExtendedArea() const
{
    return 0.0_r;
}
 
inline const PrimitiveMetadata* Primitive::getMetadata() const
{
    return nullptr;
}
 
}// end namespace ph