VolumeOptics.h

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#pragma once
 
#include "Math/math_fwd.h"
#include "Math/Color/Spectrum.h"
 
#include <Common/primitive_type.h>
 
#include <memory>
 
namespace ph
{
 
class SurfaceHit;
class ScatterFunction;
class BlockFunction;
class EmitFunction;
class VolumeDistanceSample;
 
class VolumeOptics
{
public:
    virtual ~VolumeOptics() = 0;
 
    void sample(VolumeDistanceSample& sample) const;
 
private:
    virtual void sampleDistance(
        const SurfaceHit& X, 
        const math::Vector3R& L,
        real maxDist, 
        real* out_dist, 
        math::Spectrum* out_pdfAppliedWeight) const = 0;
 
    //std::shared_ptr<ScatterFunction> m_scatterFunc;
    //std::shared_ptr<BlockFunction> m_blockFunc;
    //std::shared_ptr<EmitFunction> m_emitFunc;
};
 
}// end namespace ph