write method

Implementation

///
  /// [maxDeviationPixel] is the maximum allowed deviation in pixels when simplifying
  /// way geometries. This is used to prevent polygons from having more than 32767
  /// points, which is a limitation of the format.
  /// [instanceCount] is the number of parallel instances to use for tile processing.
  Future<void> write(double maxDeviationPixel, int instanceCount) async {
//createSubfiles();

assert(subfileCreators.isNotEmpty);
//    assert(poiTags.isNotEmpty || wayTags.isNotEmpty);

Writebuffer writebuffer = Writebuffer();
for (SubfileCreator subfileCreator in subfileCreators) {
  subfileCreator.analyze(poiTags, wayTags, mapHeaderInfo.languagesPreference);
}
_writeTags(writebuffer, poiTags);
_writeTags(writebuffer, wayTags);

MapfileHeaderWriter mapfileHeaderWriter = MapfileHeaderWriter(mapHeaderInfo);
Writebuffer writebufferHeader = mapfileHeaderWriter.write(writebuffer.length + 1 + 19 * subfileCreators.length);

for (SubfileCreator subfileCreator in subfileCreators) {
  await subfileCreator.prepareTiles(mapHeaderInfo.debugFile, maxDeviationPixel, instanceCount);
}
// amount of zoom intervals
writebuffer.appendInt1(subfileCreators.length);
await _writeZoomIntervalConfiguration(writebuffer, writebufferHeader.length + writebuffer.length + 19 * subfileCreators.length);

writebufferHeader.appendWritebuffer(writebuffer);
writebufferHeader.writeToSink(_sink);

for (SubfileCreator subfileCreator in subfileCreators) {
  // for each subfile, write the tile index header and entries
  Writebuffer writebuffer = subfileCreator.writeTileIndex(mapHeaderInfo.debugFile);
  writebuffer.writeToSink(_sink);
  await subfileCreator.writeTiles(mapHeaderInfo.debugFile, _sink);
  subfileCreator.dispose();
}
  }