27 lines
570 B
C
27 lines
570 B
C
#pragma once
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#include "spheres.h"
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#include "tuples.h"
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#include "matrices.h"
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struct ray {
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struct tuple origin;
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struct tuple direction;
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};
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inline static struct ray ray(struct tuple origin, struct tuple direction)
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{
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return (struct ray){origin, direction};
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}
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inline static struct tuple ray_position(struct ray ray, float t)
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{
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return tuple_add(ray.origin, tuple_mul(ray.direction, t));
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}
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inline static struct ray ray_transform(struct ray r, struct mat4x4 const * const m)
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{
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return ray(mat4x4_mul_t(m, &r.origin),
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mat4x4_mul_t(m, &r.direction));
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}
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