76 object *newgrid(int xsize, int ysize, int zsize, vector min, vector max) {  in newgrid()  argument
90     g->max = max;  in newgrid()
92     VSub(&g->max, &g->min, &g->voxsize);  in newgrid()
105 static int grid_bbox(void *obj, vector *min, vector *max) {  in grid_bbox()  argument
109     *max = g->max;  in grid_bbox()
140     vector min, max;  in globalbound()  local
158         max.x = FHUGE;  in globalbound()
159         max.y = FHUGE;  in globalbound()
160         max.z = FHUGE;  in globalbound()
162         if (cur->methods->bbox((void *)cur, &min, &max)) {  in globalbound()
167             gmax->x = MYMAX(gmax->x, max.x);  in globalbound()
168             gmax->y = MYMAX(gmax->y, max.y);  in globalbound()
169             gmax->z = MYMAX(gmax->z, max.z);  in globalbound()
177     vector min, max, cellmin, cellmax;  in cellbound()  local
205         max.x = FHUGE;  in cellbound()
206         max.y = FHUGE;  in cellbound()
207         max.z = FHUGE;  in cellbound()
209         if (cur->obj->methods->bbox((void *)cur->obj, &min, &max)) {  in cellbound()
210             if ((min.x >= cellmin.x) && (max.x <= cellmax.x) && (min.y >= cellmin.y) &&  in cellbound()
211                 (max.y <= cellmax.y) && (min.z >= cellmin.z) && (max.z <= cellmax.z)) {  in cellbound()
216                 cmax->x = MYMAX(cmax->x, max.x);  in cellbound()
217                 cmax->y = MYMAX(cmax->y, max.y);  in cellbound()
218                 cmax->z = MYMAX(cmax->z, max.z);  in cellbound()
462     if (pos->x < g->min.x || pos->x > g->max.x || pos->y < g->min.y || pos->y > g->max.y ||  in pos2grid()
463         pos->z < g->min.z || pos->z > g->max.z)  in pos2grid()
641         if ((ry->o.x < g->min.x) || (ry->o.x > g->max.x))  in grid_bounds_intersect()
646         tx2 = (g->max.x - ry->o.x) / ry->d.x;  in grid_bounds_intersect()
663         if ((ry->o.y < g->min.y) || (ry->o.y > g->max.y))  in grid_bounds_intersect()
668         ty2 = (g->max.y - ry->o.y) / ry->d.y;  in grid_bounds_intersect()
685         if ((ry->o.z < g->min.z) || (ry->o.z > g->max.z))  in grid_bounds_intersect()
690         tz2 = (g->max.z - ry->o.z) / ry->d.z;  in grid_bounds_intersect()