58 int box_bbox(void *obj, vector *min, vector *max) {  in box_bbox()  argument
61     *min = b->min;  in box_bbox()
72 box *newbox(void *tex, vector min, vector max) {  in newbox()  argument
79     b->min = min;  in newbox()
93         if ((ry->o.x < bx->min.x) || (ry->o.x > bx->max.x))  in box_intersect()
97         tx1 = (bx->min.x - ry->o.x) / ry->d.x;  in box_intersect()
115         if ((ry->o.y < bx->min.y) || (ry->o.y > bx->max.y))  in box_intersect()
119         ty1 = (bx->min.y - ry->o.y) / ry->d.y;  in box_intersect()
137         if ((ry->o.z < bx->min.z) || (ry->o.z > bx->max.z))  in box_intersect()
141         tz1 = (bx->min.z - ry->o.z) / ry->d.z;  in box_intersect()
166     c.x = (bx->max.x + bx->min.x) / 2.0;  in box_normal()
167     c.y = (bx->max.y + bx->min.y) / 2.0;  in box_normal()
168     c.z = (bx->max.z + bx->min.z) / 2.0;  in box_normal()