const struct g3d_vertex *v0, const struct g3d_vertex *v1, int fplane);
static float distance_signed(float *pos, const struct cplane *plane);
static int intersect(const struct ray *ray, const struct cplane *plane, float *t);
const struct g3d_vertex *v0, const struct g3d_vertex *v1, int fplane);
static float distance_signed(float *pos, const struct cplane *plane);
static int intersect(const struct ray *ray, const struct cplane *plane, float *t);