/**
* Add the given line to the graph
*
* @param wrappedLine is MasonGeometry wrapping a JTS line
* @note Some code copied from JTS PolygonizeGraph.addEdge() and hacked to fit
*/
private void addLineString(MasonGeometry wrappedLine) {
LineString line = (LineString) wrappedLine.geometry;
if (line.isEmpty()) {
return;
}
Coordinate[] linePts = CoordinateArrays.removeRepeatedPoints(line.getCoordinates());
if (linePts.length < 2) {
return;
}
Coordinate startPt = linePts[0];
Coordinate endPt = linePts[linePts.length - 1];
Node nStart = getNode(startPt); // nodes added as necessary side-effect
Node nEnd = getNode(endPt);
GeomPlanarGraphEdge edge = new GeomPlanarGraphEdge(line);
GeomPlanarGraphDirectedEdge de0 =
new GeomPlanarGraphDirectedEdge(nStart, nEnd, linePts[1], true);
GeomPlanarGraphDirectedEdge de1 =
new GeomPlanarGraphDirectedEdge(nEnd, nStart, linePts[linePts.length - 2], false);
edge.setDirectedEdges(de0, de1);
edge.setAttributes(wrappedLine.getAttributes());
add(edge);
}
