| 1 | package org.openstreetmap.josm.plugins.conflation;
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| 2 |
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| 3 | import com.vividsolutions.jts.geom.*;
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| 4 | import com.vividsolutions.jts.geom.impl.CoordinateArraySequence;
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| 5 | import com.vividsolutions.jump.feature.AbstractBasicFeature;
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| 6 | import com.vividsolutions.jump.feature.AttributeType;
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| 7 | import com.vividsolutions.jump.feature.Feature;
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| 8 | import com.vividsolutions.jump.feature.FeatureSchema;
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| 9 | import java.util.List;
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| 10 | import java.util.Map;
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| 11 | import org.openstreetmap.josm.data.coor.LatLon;
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| 12 | import org.openstreetmap.josm.data.osm.Node;
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| 13 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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| 14 | import org.openstreetmap.josm.data.osm.Relation;
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| 15 | import org.openstreetmap.josm.data.osm.Way;
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| 16 |
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| 17 | /**
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| 18 | * Methods to convert JOSM geometry to JTS geometry
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| 19 | */
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| 20 | public final class JTSConversion {
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| 21 |
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| 22 | public final OsmPrecisionModel osmPrecisionModel = new OsmPrecisionModel();
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| 23 | public final GeometryFactory osmGeometryFactory = new GeometryFactory(getPrecisionModel());
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| 24 |
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| 25 | public OsmPrecisionModel getPrecisionModel() {
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| 26 | return osmPrecisionModel;
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| 27 | }
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| 28 |
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| 29 | public GeometryFactory getGeometryFactory() {
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| 30 | return osmGeometryFactory;
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| 31 | }
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| 32 |
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| 33 | /**
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| 34 | * Simple subclass to match precision with the OSM data model (7 decimal
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| 35 | * places)
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| 36 | */
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| 37 | public class OsmPrecisionModel extends com.vividsolutions.jts.geom.PrecisionModel {
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| 38 |
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| 39 | public OsmPrecisionModel() {
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| 40 | super(10000000);
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| 41 | }
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| 42 | }
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| 43 |
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| 44 | public Coordinate convertNodeToCoordinate(Node node) {
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| 45 | LatLon ll = node.getCoor();
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| 46 | return new Coordinate(ll.lon(), ll.lat());
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| 47 | }
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| 48 |
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| 49 | public CoordinateSequence convertNodesToCoordinateSequence(List<Node> nodes) {
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| 50 | Coordinate coords[] = new Coordinate[nodes.size()];
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| 51 | for (int i = 0; i < nodes.size(); i++) {
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| 52 | coords[i] = convertNodeToCoordinate(nodes.get(i));
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| 53 | }
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| 54 | return new CoordinateArraySequence(coords);
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| 55 | }
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| 56 |
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| 57 | public Point convertNode(Node node) {
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| 58 | Coordinate coords[] = {convertNodeToCoordinate(node)};
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| 59 | return new com.vividsolutions.jts.geom.Point(new CoordinateArraySequence(coords), getGeometryFactory());
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| 60 | }
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| 61 |
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| 62 | public Geometry convertWay(Way way) {
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| 63 | CoordinateSequence coordSeq = convertNodesToCoordinateSequence(way.getNodes());
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| 64 |
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| 65 | // TODO: need to check tags to determine whether area or not
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| 66 | if (way.isClosed()) {
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| 67 | LinearRing ring = new LinearRing(coordSeq, getGeometryFactory());
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| 68 | return new Polygon(ring, null, getGeometryFactory());
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| 69 | } else {
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| 70 | return new LineString(coordSeq, getGeometryFactory());
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| 71 | }
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| 72 | }
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| 73 |
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| 74 | public Geometry convert(OsmPrimitive prim) {
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| 75 | if (prim instanceof Node) {
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| 76 | return convertNode((Node) prim);
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| 77 | } else if (prim instanceof Way) {
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| 78 | return convertWay((Way) prim);
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| 79 | } else if (prim instanceof Relation) {
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| 80 | throw new UnsupportedOperationException("Relations not supported yet.");
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| 81 | } else {
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| 82 | throw new UnsupportedOperationException("Unknown primitive.");
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| 83 | }
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| 84 | }
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| 85 | }
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