176 static int cellbound(grid *g, gridindex *index, vector *cmin, vector *cmax) {  in cellbound()  argument
181     cur = g->cells[index->z * g->xsize * g->ysize + index->y * g->xsize + index->x];  in cellbound()
186     cellmin.x = voxel2x(g, index->x);  in cellbound()
187     cellmin.y = voxel2y(g, index->y);  in cellbound()
188     cellmin.z = voxel2z(g, index->z);  in cellbound()
277     gridindex index;  in engrid_scene()  local
299         for (index.z = 0; index.z < g->zsize; index.z++) {  in engrid_scene()
300             for (index.y = 0; index.y < g->ysize; index.y++) {  in engrid_scene()
301                 for (index.x = 0; index.x < g->xsize; index.x++) {  in engrid_scene()
302                     engrid_cell(g, &index);  in engrid_scene()
332 static int engrid_cell(grid *gold, gridindex *index) {  in engrid_cell()  argument
340     list = &gold->cells[index->z * gold->xsize * gold->ysize + index->y * gold->xsize + index->x];  in engrid_cell()
345     numobj = cellbound(gold, index, &gmin, &gmax);  in engrid_cell()
446 static int pos2grid(grid *g, vector *pos, gridindex *index) {  in pos2grid()  argument
447     index->x = (int)((pos->x - g->min.x) / g->voxsize.x);  in pos2grid()
448     index->y = (int)((pos->y - g->min.y) / g->voxsize.y);  in pos2grid()
449     index->z = (int)((pos->z - g->min.z) / g->voxsize.z);  in pos2grid()
451     if (index->x == g->xsize)  in pos2grid()
452         index->x--;  in pos2grid()
453     if (index->y == g->ysize)  in pos2grid()
454         index->y--;  in pos2grid()
455     if (index->z == g->zsize)  in pos2grid()
456         index->z--;  in pos2grid()
458     if (index->x < 0 || index->x > g->xsize || index->y < 0 || index->y > g->ysize ||  in pos2grid()
459         index->z < 0 || index->z > g->zsize)  in pos2grid()