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

243
brouter-map-creator/src/main/java/btools/mapcreator/OsmNodeP.java Normal file
View file

@ -0,0 +1,243 @@
/**
* Container for an osm node (pre-pocessor version)
*
* @author ab
*/
package btools.mapcreator;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
public class OsmNodeP implements Comparable<OsmNodeP>
{
public static final int EXTERNAL_BITMASK = 0x80;
public static final int FIRSTFORWAY_BITMASK = 0x40;
public static final int TRANSFERNODE_BITMASK = 0x20;
public static final int WRITEDESC_BITMASK = 0x10;
public static final int SKIPDETAILS_BITMASK = 0x08;
public static final int NODEDESC_BITMASK = 0x04;
/**
* The latitude
*/
public int ilat;
/**
* The longitude
*/
public int ilon;
/**
* The links to other nodes
*/
public OsmLinkP firstlink = null;
/**
* The elevation
*/
public short selev;
public boolean isBorder = false;
public byte wayAndBits = -1; // use for bridge/tunnel logic
// interface OsmPos
public int getILat()
{
return ilat;
}
public int getILon()
{
return ilon;
}
public short getSElev()
{
// if all bridge or all tunnel, elevation=no-data
return (wayAndBits & 24) == 0 ? selev : Short.MIN_VALUE;
}
public double getElev()
{
return selev / 4.;
}
public void addLink( OsmLinkP link )
{
if ( firstlink != null ) link.next = firstlink;
firstlink = link;
}
public long getNodeDecsription()
{
return 0L;
}
public void writeNodeData( DataOutputStream os ) throws IOException
{
int lonIdx = ilon/62500;
int latIdx = ilat/62500;
// buffer the body to first calc size
ByteArrayOutputStream bos = new ByteArrayOutputStream( );
DataOutputStream os2 = new DataOutputStream( bos );
os2.writeShort( getSElev() );
int nlinks = 0;
// hack: write node-desc as link tag (copy cycleway-bits)
long nodeDescription = getNodeDecsription();
for( OsmLinkP link0 = firstlink; link0 != null; link0 = link0.next )
{
nlinks++;
OsmLinkP link = link0;
OsmNodeP origin = this;
int skipDetailBit = link0.counterLinkWritten() ? SKIPDETAILS_BITMASK : 0;
// first pass just to see if that link is consistent
while( link != null )
{
OsmNodeP target = link.targetNode;
if ( !target.isTransferNode() )
{
break;
}
// next link is the one (of two), does does'nt point back
for( link = target.firstlink; link != null; link = link.next )
{
if ( link.targetNode != origin ) break;
}
origin = target;
}
if ( link == null ) continue; // dead end
if ( skipDetailBit == 0)
{
link = link0;
}
origin = this;
long lastDescription = 0;
while( link != null )
{
OsmNodeP target = link.targetNode;
int tranferbit = target.isTransferNode() ? TRANSFERNODE_BITMASK : 0;
int writedescbit = link.descriptionBitmap != lastDescription ? WRITEDESC_BITMASK : 0;
int nodedescbit = nodeDescription != 0L ? NODEDESC_BITMASK : 0;
if ( skipDetailBit != 0 )
{
writedescbit = 0;
}
int targetLonIdx = target.ilon/62500;
int targetLatIdx = target.ilat/62500;
if ( targetLonIdx == lonIdx && targetLatIdx == latIdx )
{
// reduced position for internal target
os2.writeByte( tranferbit | writedescbit | nodedescbit | skipDetailBit );
os2.writeShort( (short)(target.ilon - lonIdx*62500 - 31250) );
os2.writeShort( (short)(target.ilat - latIdx*62500 - 31250) );
}
else
{
// full position for external target
os2.writeByte( tranferbit | writedescbit | nodedescbit | skipDetailBit | EXTERNAL_BITMASK );
os2.writeInt( target.ilon );
os2.writeInt( target.ilat );
}
if ( writedescbit != 0 )
{
os2.writeLong( link.descriptionBitmap );
}
if ( nodedescbit != 0 )
{
os2.writeLong( nodeDescription );
nodeDescription = 0L;
}
lastDescription = link.descriptionBitmap;
if ( tranferbit == 0)
{
target.markLinkWritten( origin );
break;
}
os2.writeShort( target.getSElev() );
// next link is the one (of two), does does'nt point back
for( link = target.firstlink; link != null; link = link.next )
{
if ( link.targetNode != origin ) break;
}
if ( link == null ) throw new RuntimeException( "follow-up link not found for transfer-node!" );
origin = target;
}
}
// calculate the body size
int bodySize = bos.size();
os.writeShort( (short)(ilon - lonIdx*62500 - 31250) );
os.writeShort( (short)(ilat - latIdx*62500 - 31250) );
os.writeInt( bodySize );
bos.writeTo( os );
}
public String toString2()
{
return (ilon-180000000) + "_" + (ilat-90000000) + "_" + (selev/4);
}
public long getIdFromPos()
{
return ((long)ilon)<<32 | ilat;
}
public boolean isTransferNode()
{
return (!isBorder) && _linkCnt() == 2;
}
private int _linkCnt()
{
int cnt = 0;
for( OsmLinkP link = firstlink; link != null; link = link.next )
{
cnt++;
}
return cnt;
}
// mark the link to the given node as written,
// don't want to write the counter-direction
// in full details
public void markLinkWritten( OsmNodeP t )
{
for( OsmLinkP link = firstlink; link != null; link = link.next )
{
if ( link.targetNode == t) link.descriptionBitmap = 0L;
}
}
/**
* Compares two OsmNodes for position ordering.
*
* @return -1,0,1 depending an comparson result
*/
public int compareTo( OsmNodeP n )
{
long id1 = getIdFromPos();
long id2 = n.getIdFromPos();
if ( id1 < id2 ) return -1;
if ( id1 > id2 ) return 1;
return 0;
}
}