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#ifndef __PATHTRACER_X__H__
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#define __PATHTRACER_X__H__
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#include "tracer.h"
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class path_tracer : public tracer
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{
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public:
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    path_tracer(int width, int height, bool explicit_direct, int subsamples);
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    CGLA::Vec3f compute_pixel(int w, int h);
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private:
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    CGLA::Vec3f trace(const ray& r, bool include_emitted);
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    //use explicit integration of direct illumination
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    bool explicit_direct_;
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    //
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    int subsamples_;
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};
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#endif
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//02566 framework, Anders Wang Kristensen, awk@imm.dtu.dk, 2007