OrientationInfoGenerator.java 文件源码

private static String modelRotationToJson(ModelRotation m) {
    final Matcher matcher = namePattern.matcher(m.name());
    Preconditions.checkState(matcher.matches());
    final String x = matcher.group(1);
    final String y = matcher.group(2);

    List<String> result = Lists.newArrayList();
    if (!x.equals("0")) result.add("\"x\": " + x);
    if (!y.equals("0")) result.add("\"y\": " + y);
    return Joiner.on(", ").join(result);
}