75 lines
2.1 KiB
Java
75 lines
2.1 KiB
Java
package btools.mapcreator;
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import java.io.File;
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/**
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* NodeCutter does 1 step in map-processing:
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* <p>
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* - cuts the 45*30 node tiles into 5*5 pieces
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*
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* @author ab
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*/
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public class NodeCutter extends MapCreatorBase {
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private int lonoffset;
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private int latoffset;
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public static void main(String[] args) throws Exception {
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System.out.println("*** NodeCutter: Cut big node-tiles into 5x5 tiles");
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if (args.length != 2) {
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System.out.println("usage: java NodeCutter <node-tiles-in> <node-tiles-out>");
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return;
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}
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new NodeCutter().process(new File(args[0]), new File(args[1]));
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}
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public void init(File nodeTilesOut) {
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this.outTileDir = nodeTilesOut;
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}
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public void process(File nodeTilesIn, File nodeTilesOut) throws Exception {
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init(nodeTilesOut);
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new NodeIterator(this, true).processDir(nodeTilesIn, ".tlf");
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}
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@Override
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public void nodeFileStart(File nodefile) throws Exception {
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lonoffset = -1;
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latoffset = -1;
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}
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@Override
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public void nextNode(NodeData n) throws Exception {
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n.writeTo(getOutStreamForTile(getTileIndex(n.ilon, n.ilat)));
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}
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@Override
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public void nodeFileEnd(File nodeFile) throws Exception {
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closeTileOutStreams();
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}
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private int getTileIndex(int ilon, int ilat) {
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int lonoff = (ilon / 45000000) * 45;
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int latoff = (ilat / 30000000) * 30;
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if (lonoffset == -1) lonoffset = lonoff;
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if (latoffset == -1) latoffset = latoff;
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if (lonoff != lonoffset || latoff != latoffset)
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throw new IllegalArgumentException("inconsistent node: " + ilon + " " + ilat);
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int lon = (ilon / 5000000) % 9;
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int lat = (ilat / 5000000) % 6;
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if (lon < 0 || lon > 8 || lat < 0 || lat > 5)
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throw new IllegalArgumentException("illegal pos: " + ilon + "," + ilat);
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return lon * 6 + lat;
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}
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protected String getNameForTile(int tileIndex) {
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int lon = (tileIndex / 6) * 5 + lonoffset - 180;
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int lat = (tileIndex % 6) * 5 + latoffset - 90;
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String slon = lon < 0 ? "W" + (-lon) : "E" + lon;
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String slat = lat < 0 ? "S" + (-lat) : "N" + lat;
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return slon + "_" + slat + ".n5d";
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}
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}
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