batch.parentGeom = null;
	public void removeBatch(GeomBatch batch) {		batchList.remove(batch);		batchCount = batchList.size();		if(this.batch == batch) {			if(batchCount != 0) {				this.batch = (GeomBatch)batchList.get(0);			} else {				this.batch = null;			}		}	}