ben/brouter
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions 1

initial commit of BRouter Version 0.98

Browse source
This commit is contained in:
Arndt Brenschede 2014-01-18 15:29:05 +01:00
parent e4ae2b37d3
commit 91e62f1164
120 changed files with 15382 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

144
brouter-mapaccess/src/main/java/btools/mapaccess/OsmTransferNode.java Normal file
View file

@ -0,0 +1,144 @@
/**
* Container for link between two Osm nodes
*
* @author ab
*/
package btools.mapaccess;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
public final class OsmTransferNode
{
/**
* The description bitmap is mainly the way description
* used to calculate the costfactor
*/
public long descriptionBitmap;
public OsmTransferNode next;
public int ilon;
public int ilat;
public short selev;
private static final int BIT_DESC = 1;
private static final int BIT_ILONHIGH = 2;
private static final int BIT_ILATHIGH = 4;
private static final int BIT_STOP = 8;
// encode this transfer-node into a byte array
public static byte[] encode( OsmTransferNode tn )
{
long currentDesc = 0;
int currentILonHigh = 0;
int currentILatHigh = 0;
OsmTransferNode n = tn;
// first loop to calc size
int size = 1; // stop-bit
while( n != null )
{
if( n.descriptionBitmap != currentDesc )
{
size += 8;
currentDesc = n.descriptionBitmap;
}
if( ( n.ilon >> 16 ) != currentILonHigh )
{
size += 2;
currentILonHigh = n.ilon >> 16;
}
if( (n.ilat >> 16) != currentILatHigh )
{
size += 2;
currentILatHigh = n.ilat >> 16;
}
size += 7;
n = n.next;
}
byte[] ab = new byte[size];
ByteDataWriter os = new ByteDataWriter( ab );
currentDesc = 0;
currentILonHigh = 0;
currentILatHigh = 0;
n = tn;
while( n != null )
{
int mode = 0;
if( n.descriptionBitmap != currentDesc )
{
mode |= BIT_DESC;
currentDesc = n.descriptionBitmap;
}
if( ( n.ilon >> 16 ) != currentILonHigh )
{
mode |= BIT_ILONHIGH;
currentILonHigh = n.ilon >> 16;
}
if( (n.ilat >> 16) != currentILatHigh )
{
mode |= BIT_ILATHIGH;
currentILatHigh = n.ilat >> 16;
}
os.writeByte( mode);
if ( (mode & BIT_DESC) != 0 ) os.writeLong( currentDesc );
if ( (mode & BIT_ILONHIGH) != 0 ) os.writeShort( currentILonHigh );
if ( (mode & BIT_ILATHIGH) != 0 ) os.writeShort( currentILatHigh );
os.writeShort( n.ilon );
os.writeShort( n.ilat );
os.writeShort( n.selev );
n = n.next;
}
os.writeByte( BIT_STOP );
return ab;
}
// decode a transfer-node from a byte array
public static OsmTransferNode decode( byte[] ab )
{
ByteDataReader is = new ByteDataReader( ab );
OsmTransferNode firstNode = null;
OsmTransferNode lastNode = null;
long currentDesc = 0;
int currentILonHigh = 0;
int currentILatHigh = 0;
for(;;)
{
byte mode = is.readByte();
if ( (mode & BIT_STOP ) != 0 ) break;
OsmTransferNode n = new OsmTransferNode();
if ( (mode & BIT_DESC) != 0 ) currentDesc = is.readLong();
if ( (mode & BIT_ILONHIGH) != 0 ) currentILonHigh = is.readShort();
if ( (mode & BIT_ILATHIGH) != 0 ) currentILatHigh = is.readShort();
n.descriptionBitmap = currentDesc;
int ilon = is.readShort() & 0xffff; ilon |= currentILonHigh << 16;
int ilat = is.readShort() & 0xffff; ilat |= currentILatHigh << 16;
n.ilon = ilon;
n.ilat = ilat;
n.selev = is.readShort();
if ( ilon != n.ilon ) System.out.println( "ilon=" + ilon + " n.ilon=" + n.ilon );
if ( ilat != n.ilat ) System.out.println( "ilat=" + ilat + " n.ilat=" + n.ilat );
if ( lastNode != null )
{
lastNode.next = n;
}
else
{
firstNode = n;
}
lastNode = n;
}
return firstNode;
}
}