76 object *newgrid(int xsize, int ysize, int zsize, vector min, vector max) {  in newgrid()  argument
86     g->ysize = ysize;  in newgrid()
94     g->voxsize.y /= (flt)g->ysize;  in newgrid()
97     g->cells = (objectlist **)rt_getmem(xsize * ysize * zsize * sizeof(objectlist *));  in newgrid()
98     memset(g->cells, 0, xsize * ysize * zsize * sizeof(objectlist *));  in newgrid()
119     numvoxels = g->xsize * g->ysize * g->zsize;  in grid_free()
181     cur = g->cells[index->z * g->xsize * g->ysize + index->y * g->xsize + index->x];  in cellbound()
300             for (index.y = 0; index.y < g->ysize; index.y++) {  in engrid_scene()
340     list = &gold->cells[index->z * gold->xsize * gold->ysize + index->y * gold->xsize + index->x];  in engrid_cell()
430         zindex = z * g->xsize * g->ysize;  in engrid_object()
453     if (index->y == g->ysize)  in pos2grid()
458     if (index->x < 0 || index->x > g->xsize || index->y < 0 || index->y > g->ysize ||  in pos2grid()
525         out.y = g->ysize;  in grid_intersect()
558     voxindex = curvox.z * g->xsize * g->ysize + curvox.y * g->xsize + curvox.x;  in grid_intersect()
591             voxindex += step.z * g->xsize * g->ysize;  in grid_intersect()