SphericalMapper.h

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#pragma once
 
#include "Core/Intersection/UvwMapper/UvwMapper.h"
 
#include <Common/assertion.h>
 
namespace ph
{
 
class SphericalMapper : public UvwMapper
{
public:
    void posToUvw(const math::Vector3R& pos, math::Vector3R* out_uvw) const override;
    void dirToUvw(const math::Vector3R& dir, math::Vector3R* out_uvw) const override;
    bool uvwToPos(const math::Vector3R& uvw, math::Vector3R* out_pos) const override;
    bool uvwToDir(const math::Vector3R& uvw, math::Vector3R* out_dir) const override;
};
 
// In-header Implementations:
 
inline void SphericalMapper::posToUvw(const math::Vector3R& pos, math::Vector3R* const out_uvw) const
{
    PH_ASSERT(out_uvw);
 
    // HACK: magic number
    if(pos.lengthSquared() < 1e-8)
    {
        out_uvw->set({0, 0, 0});
        return;
    }
 
    dirToUvw(pos, out_uvw);
}
 
inline bool SphericalMapper::uvwToPos(const math::Vector3R& uvw, math::Vector3R* const out_pos) const
{
    return false;
}
 
}// end namespace ph