milner
816b1ee594
Nine targets: two translation units generated from scene files, a C++ consumer, a shared object built from the same sources as the archives, and an optional zlib dependency.
44 lines
842 B
C
44 lines
842 B
C
#ifndef RT_H
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#define RT_H
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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double x, y, z;
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} vec3;
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vec3 v3(double x, double y, double z);
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vec3 v3add(vec3 a, vec3 b);
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vec3 v3sub(vec3 a, vec3 b);
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vec3 v3mul(vec3 a, vec3 b);
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vec3 v3scale(vec3 a, double t);
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vec3 v3neg(vec3 a);
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double v3dot(vec3 a, vec3 b);
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vec3 v3cross(vec3 a, vec3 b);
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double v3len2(vec3 a);
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double v3len(vec3 a);
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vec3 v3norm(vec3 a);
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vec3 v3reflect(vec3 v, vec3 n);
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vec3 v3lerp(vec3 a, vec3 b, double t);
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/* Deterministic xorshift128+, so a render is reproducible. */
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typedef struct {
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unsigned long long s0, s1;
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} rng;
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void rng_seed(rng *r, unsigned long long seed);
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double rng_unit(rng *r);
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double rng_range(rng *r, double lo, double hi);
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vec3 rng_in_sphere(rng *r);
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vec3 rng_unit_vector(rng *r);
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#ifdef __cplusplus
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}
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#endif
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#endif
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