/**
* Get the envelope flag indicator
*
* <p>1 for xy, 2 for xyz, 3 for xym, 4 for xyzm (null would be 0)
*
* @return
*/
public static int getIndicator(GeometryEnvelope envelope) {
int indicator = 1;
if (envelope.hasZ()) {
indicator++;
}
if (envelope.hasM()) {
indicator += 2;
}
return indicator;
}
/**
* Write the envelope bytes
*
* @param writer
* @throws IOException
*/
private void writeEnvelope(ByteWriter writer) throws IOException {
if (envelope != null) {
// Write x and y values
writer.writeDouble(envelope.getMinX());
writer.writeDouble(envelope.getMaxX());
writer.writeDouble(envelope.getMinY());
writer.writeDouble(envelope.getMaxY());
// Write z values
if (envelope.hasZ()) {
writer.writeDouble(envelope.getMinZ());
writer.writeDouble(envelope.getMaxZ());
}
// Write m values
if (envelope.hasM()) {
writer.writeDouble(envelope.getMinM());
writer.writeDouble(envelope.getMaxM());
}
}
}