void readAtomCountAndOrigin() throws Exception {
		line = br.readLine();
		if (!isSilent)
			Logger.debug(line);
		atomCount = parseInt(line);
		String atomLine = line.substring(ichNextParse);
		negativeAtomCount = (atomCount < 0);
		if (!isSilent)
			Logger.debug("atom Count: " + atomCount);

		if (negativeAtomCount)
			atomCount = -atomCount;

		int jvxlAtoms = (atomCount == 0 ? -2 : -atomCount);
		volumetricOrigin.set(parseFloat(), parseFloat(), parseFloat());
		if (!isAngstroms)
			volumetricOrigin.scale(ANGSTROMS_PER_BOHR);
		jvxlFileHeader.append(jvxlAtoms + atomLine + '\n');
	}