private List<Integer> waynodesAsList(List<GeoCoordinate> waynodeCoordinates) {
ArrayList<Integer> result = new ArrayList<Integer>();
for (GeoCoordinate geoCoordinate : waynodeCoordinates) {
result.add(geoCoordinate.getLatitudeE6());
result.add(geoCoordinate.getLongitudeE6());
}
return result;
}
private long writeContainerHeader(
long date,
int version,
short tilePixel,
String comment,
boolean debugStrings,
boolean waynodeCompression,
boolean polygonClipping,
boolean pixelCompression,
GeoCoordinate mapStartPosition)
throws IOException {
// get metadata for the map file
int numberOfZoomIntervals = dataStore.getZoomIntervalConfiguration().getNumberOfZoomIntervals();
logger.fine("writing header");
MappedByteBuffer containerHeaderBuffer =
randomAccessFile.getChannel().map(MapMode.READ_WRITE, 0, HEADER_BUFFER_SIZE);
// write file header
// magic byte
byte[] magicBytes = MAGIC_BYTE.getBytes();
containerHeaderBuffer.put(magicBytes);
// write container header size
int headerSizePosition = containerHeaderBuffer.position();
containerHeaderBuffer.position(headerSizePosition + 4);
// version number of the binary file format
containerHeaderBuffer.putInt(version);
// meta info byte
containerHeaderBuffer.put(
buildMetaInfoByte(
debugStrings,
mapStartPosition != null,
pixelCompression,
polygonClipping,
waynodeCompression));
// amount of map files inside this file
containerHeaderBuffer.put((byte) numberOfZoomIntervals);
// projection type
writeUTF8(PROJECTION, containerHeaderBuffer);
// width and height of a tile in pixel
containerHeaderBuffer.putShort(tilePixel);
logger.fine(
"Bounding box for file: "
+ dataStore.getBoundingBox().maxLatitudeE6
+ ", "
+ dataStore.getBoundingBox().minLongitudeE6
+ ", "
+ dataStore.getBoundingBox().minLatitudeE6
+ ", "
+ dataStore.getBoundingBox().maxLongitudeE6);
// upper left corner of the bounding box
containerHeaderBuffer.putInt(dataStore.getBoundingBox().maxLatitudeE6);
containerHeaderBuffer.putInt(dataStore.getBoundingBox().minLongitudeE6);
containerHeaderBuffer.putInt(dataStore.getBoundingBox().minLatitudeE6);
containerHeaderBuffer.putInt(dataStore.getBoundingBox().maxLongitudeE6);
if (mapStartPosition != null) {
containerHeaderBuffer.putInt(mapStartPosition.getLatitudeE6());
containerHeaderBuffer.putInt(mapStartPosition.getLongitudeE6());
}
// date of the map data
containerHeaderBuffer.putLong(date);
// store the mapping of tags to tag ids
containerHeaderBuffer.putShort((short) PoiEnum.values().length);
for (PoiEnum poiEnum : PoiEnum.values()) {
writeUTF8(poiEnum.toString(), containerHeaderBuffer);
containerHeaderBuffer.putShort((short) poiEnum.ordinal());
}
containerHeaderBuffer.putShort((short) WayEnum.values().length);
for (WayEnum wayEnum : WayEnum.values()) {
writeUTF8(wayEnum.toString(), containerHeaderBuffer);
containerHeaderBuffer.putShort((short) wayEnum.ordinal());
}
// comment
if (comment != null && !comment.equals("")) {
writeUTF8(comment, containerHeaderBuffer);
} else {
writeUTF8("", containerHeaderBuffer);
}
// initialize buffer for writing zoom interval configurations
bufferZoomIntervalConfig =
randomAccessFile
.getChannel()
.map(
MapMode.READ_WRITE,
containerHeaderBuffer.position(),
SIZE_ZOOMINTERVAL_CONFIGURATION * numberOfZoomIntervals);
containerHeaderBuffer.position(
containerHeaderBuffer.position() + SIZE_ZOOMINTERVAL_CONFIGURATION * numberOfZoomIntervals);
// -4 bytes of header size variable itself
int headerSize = containerHeaderBuffer.position() - headerSizePosition - 4;
containerHeaderBuffer.putInt(headerSizePosition, headerSize);
return containerHeaderBuffer.position();
}