20 lines
217 B
C
20 lines
217 B
C
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#ifndef RAY_H
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#define RAY_H
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#include "vec3.h"
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typedef struct ray ray;
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struct ray
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{
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vec3 origin;
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vec3 direction;
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};
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inline vec3
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at(ray r, double t)
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{
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return vecadd(r.origin, vecscale(t, r.direction));
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}
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#endif
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