/**
* Each edge will be built with 2 coordinates.
*
* @param intersectingLineStrings The geometry which edges will be based on.
* @param onLoc position for ON.
* @param leftLoc position for LEFT.
* @param rightLoc position for RIGHT.
*/
private void insertEdge(
final Geometry intersectingLineStrings,
final Geometry holeGeometries,
final int onLoc,
final int leftLoc,
final int rightLoc) {
for (int i = 0; i < intersectingLineStrings.getNumGeometries(); i++) {
Geometry intersectingSegment = intersectingLineStrings.getGeometryN(i);
if ((intersectingSegment.getNumPoints() == 2) && !holeGeometries.isEmpty()) {
// special case, when the line has 2 coordinates and
// its orientation can't be calculated because it hasn't.
intersectingSegment = adjustSegmentToHoleDirection(intersectingSegment, holeGeometries);
}
Coordinate[] coords = intersectingSegment.getCoordinates();
for (int j = 0; j < coords.length - 1; j++) {
final SplitEdge edge =
SplitEdge.newInstance(coords[j], coords[j + 1], onLoc, leftLoc, rightLoc);
// add the list that only contains one edge because it will
// create 2 directedEdge.
this.graph.addEdge(edge);
}
}
}
private String geometrySignature(Geometry geom) {
if (geom == null) return "";
String sig = geom.getGeometryType();
if (geom instanceof GeometryCollection) {
sig += "[" + geom.getNumGeometries() + "]";
} else {
sig += "(" + geom.getNumPoints() + ")";
}
return sig;
}
/**
* Returns the nth point of a line.
*
* @param node xml element containing gml object(s)
* @param number index of i-th point
* @return n-th point as a gml element
* @throws QueryException query exception
*/
@Deterministic
public ANode pointN(final ANode node, final Int number) throws QueryException {
final Geometry geo = geo(node, Q_GML_LINEARRING, Q_GML_LINESTRING);
if (geo == null && checkGeo(node) != null)
throw GeoErrors.geoType(node.qname().local(), "Line");
final int max = geo.getNumPoints();
final long n = number.itr();
if (n < 1 || n > max) throw GeoErrors.outOfRangeIdx(number);
return gmlWriter(((LineString) geo).getPointN((int) n - 1));
}
/**
* Calculates the width of a point if it is not set in the gaf file.<br>
* For PP points, it is just the distance to the first point.<br>
* For non-pp points, it is the station of the point projected to the pp-line.
*/
private BigDecimal getOrCalculatePoint(
final GafPart gafPart, final GafPoint gafPoint, final GafPart projectionPart) {
final BigDecimal width = gafPoint.getWidth();
if (width != null) return width;
final com.vividsolutions.jts.geom.Point location = gafPoint.getPoint();
if (GafKind.P.equals(gafPart.getKind()) || projectionPart == null) {
return calculateWidthFromDistance(gafPart, location);
} else {
final Geometry line = projectionPart.getLine(m_dbType);
if (!(line instanceof LineString) || line.getNumPoints() < 2)
return calculateWidthFromDistance(gafPart, location);
final LineString ls = (LineString) line;
final LocationIndexedLine lineRef = new LocationIndexedLine(line);
final LinearLocation loc = lineRef.project(location.getCoordinate());
final Coordinate closestPt = loc.getCoordinate(line);
final double distance = ls.getCoordinateN(0).distance(closestPt);
return new BigDecimal(distance).setScale(3, BigDecimal.ROUND_HALF_UP);
}
}
/**
* @param lineg
* @param g
* @return
*/
private boolean equalsExactBackwards(Geometry lineg, Geometry g) {
if (lineg.getNumPoints() != g.getNumPoints()) return false;
return reverse((LineString) g).equalsExact(lineg);
}
