diff options
| author | Vito Caputo <vcaputo@gnugeneration.com> | 2017-02-09 04:32:45 -0800 |
|---|---|---|
| committer | Vito Caputo <vcaputo@gnugeneration.com> | 2017-02-09 04:32:45 -0800 |
| commit | 19dbf88c811c6f853566fda48ad100d1c29faf50 (patch) | |
| tree | 4a1d563ee5c7808aef11ce89b0b5a0ef73b9d42d /src/modules/ray/ray_object_sphere.h | |
| parent | 8563edd058bb5e564b5e6c2bafde6636b3fce6ee (diff) | |
ray: fix mistake in ray:sphere intersection math
Diffstat (limited to 'src/modules/ray/ray_object_sphere.h')
| -rw-r--r-- | src/modules/ray/ray_object_sphere.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/modules/ray/ray_object_sphere.h b/src/modules/ray/ray_object_sphere.h index 85b3d93..5df4b2e 100644 --- a/src/modules/ray/ray_object_sphere.h +++ b/src/modules/ray/ray_object_sphere.h @@ -23,7 +23,7 @@ static inline int ray_object_sphere_intersects_ray(ray_object_sphere_t *sphere, { ray_3f_t v = ray_3f_sub(&ray->origin, &sphere->center); float b = ray_3f_dot(&v, &ray->direction); - float disc = (sphere->radius * sphere->radius) - ray_3f_dot(&v, &v) + (b * b); + float disc = (sphere->radius * sphere->radius) - (ray_3f_dot(&v, &v) - (b * b)); if (disc > 0) { float i1, i2; |