298   CollectZoneCtx *zone = (CollectZoneCtx *)ctx;  in collect_zone()  local
310   r2        = zone->radius * zone->radius;  in collect_zone()
315     sep2 = (array_x[p] - zone->cx[0]) * (array_x[p] - zone->cx[0]);  in collect_zone()
316     sep2 += (array_y[p] - zone->cx[1]) * (array_y[p] - zone->cx[1]);  in collect_zone()
325     sep2 = (array_x[p] - zone->cx[0]) * (array_x[p] - zone->cx[0]);  in collect_zone()
326     sep2 += (array_y[p] - zone->cx[1]) * (array_y[p] - zone->cx[1]);  in collect_zone()
346   CollectZoneCtx *zone;  in ex1_4()  local
409   PetscCall(PetscMalloc1(1, &zone));  in ex1_4()
412       zone->cx[0]  = 0.5;  in ex1_4()
413       zone->cx[1]  = 0.5;  in ex1_4()
414       zone->radius = 0.3;  in ex1_4()
417       zone->cx[0]  = -0.5;  in ex1_4()
418       zone->cx[1]  = 0.5;  in ex1_4()
419       zone->radius = 0.25;  in ex1_4()
422       zone->cx[0]  = 0.5;  in ex1_4()
423       zone->cx[1]  = -0.5;  in ex1_4()
424       zone->radius = 0.2;  in ex1_4()
427       zone->cx[0]  = -0.5;  in ex1_4()
428       zone->cx[1]  = -0.5;  in ex1_4()
429       zone->radius = 0.1;  in ex1_4()
433       zone->cx[0]  = 0.5;  in ex1_4()
434       zone->cx[1]  = 0.5;  in ex1_4()
435       zone->radius = 0.8;  in ex1_4()
437       zone->cx[0]  = 10.0;  in ex1_4()
438       zone->cx[1]  = 10.0;  in ex1_4()
439       zone->radius = 0.0;  in ex1_4()
451     PetscCall(DMSwarmCollect_General(dms, collect_zone, sizeof(CollectZoneCtx), zone, &ng));  in ex1_4()
478   PetscCall(PetscFree(zone));  in ex1_4()