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349 awk 1 
#ifndef __PATHTRACER_MATERIAL__HPP__
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#define __PATHTRACER_MATERIAL__HPP__
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#include "core.hpp"
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class material
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{
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public:
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    material(float ior, float ext);
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    virtual ~material(void) = 0;
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    virtual void sample(const ray&, hit_info&) const = 0;
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protected:
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    //index of refraction (real part)
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    float ior_;
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    //index of refraction (complex part)
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    float extinction_;
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};
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#endif
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//02566 framework, Anders Wang Kristensen, awk@imm.dtu.dk, 2007