Package com.vividsolutions.jts.linearref

Examples of com.vividsolutions.jts.linearref.LocationIndexedLine

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                Geometry geom = (MultiLineString) simpleFeature.getDefaultGeometry();
                // Just in case: check for  null or empty geometry
                if (geom != null) {
                    Envelope env = geom.getEnvelopeInternal();
                    if (!env.isNull()) {
                        index.insert(env, new LocationIndexedLine(geom));
                    }
                }
            }
        }, new NullProgressListener());
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    Iterator<SpatialDatabaseRecord> records = layer.getIndex().search(new SearchIntersect(layer, filter));
    while (records.hasNext()) {
      SpatialDatabaseRecord record = records.next();
      Geometry geom = record.getGeometry();
      if (geom instanceof LineString) {
        LocationIndexedLine line = new LocationIndexedLine(geom);
        LinearLocation here = line.project(point.getCoordinate());
        Coordinate snap = line.extractPoint(here);
        double distance = snap.distance(point.getCoordinate());
        results.add(new PointResult(layer.getGeometryFactory()
            .createPoint(snap), record, distance));
      } else if (geom instanceof Point) {
                Point here = (Point) geom;
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    System.out.println("Extracting point at position 1.5 offset -0.5: " + line.extractPoint(1.5, -0.5));
    System.out.println("Extracting point at position " + length + ": " + line.extractPoint(length));
    System.out.println("Extracting point at position " + (length / 2) + ": " + line.extractPoint(length / 2));
    System.out.println("Extracting line from position 0.1 to 0.2: " + line.extractLine(0.1, 0.2));
    System.out.println("Extracting line from position 0.0 to " + (length / 2) + ": " + line.extractLine(0, length / 2));
    LocationIndexedLine pline = new LocationIndexedLine(geometry);
    System.out.println("Have LocationIndexedLine: " + pline);
    System.out.println("Have start index: " + pline.getStartIndex());
    System.out.println("Have end index: " + pline.getEndIndex());
    System.out.println("Extracting point at start: " + pline.extractPoint(pline.getStartIndex()));
    System.out.println("Extracting point at end: " + pline.extractPoint(pline.getEndIndex()));
    System.out.println("Extracting point at start offset 0.5: " + pline.extractPoint(pline.getStartIndex(), 0.5));
    System.out.println("Extracting point at end offset 0.5: " + pline.extractPoint(pline.getEndIndex(), 0.5));
  }
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