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Implement Lambertian diffuse scattering

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Camden Dixie O'Brien
2025-09-21 16:48:58 +01:00
parent 89597c9b01
commit 7552ec2fc9
1 changed files with 4 additions and 4 deletions
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8
src/camera.c
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@@ -29,10 +29,10 @@ static const vec3_t black = { 0.0, 0.0, 0.0 };
static ray_t scatter(hit_t hit, rng_t *rng) static ray_t scatter(hit_t hit, rng_t *rng)
{ {
const vec3_t rand = rng_vec3(rng); return (ray_t) {
const vec3_t dir .orig = hit.point,
= vec3_dot(rand, hit.normal) > 0.0 ? rand : vec3_scale(rand, -1.0); .dir = vec3_add(hit.normal, rng_vec3(rng)),
return (ray_t) { .orig = hit.point, .dir = dir }; };
} }
static vec3_t static vec3_t