public Coordinate getCoordOnEdge(Vector obsPoint) {
if (this == InferredEdge.emptyEdge) return null;
final Coordinate revObsPoint = new Coordinate(obsPoint.getElement(1), obsPoint.getElement(0));
final LinearLocation here = locationIndexedLine.project(revObsPoint);
final Coordinate pointOnLine = locationIndexedLine.extractPoint(here);
final Coordinate revOnLine = new Coordinate(pointOnLine.y, pointOnLine.x);
return revOnLine;
}
/**
* 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);
}
}
/**
* Get the snapped location in projected/euclidean coordinates for the given obsPoint (in
* lat/lon).
*
* @param obsPoint
* @return
*/
public Vector getPointOnEdge(Coordinate obsPoint) {
if (this == InferredEdge.emptyEdge) return null;
final LinearLocation here = locationIndexedLine.project(obsPoint);
final Coordinate pointOnLine = locationIndexedLine.extractPoint(here);
return VectorFactory.getDefault().createVector2D(pointOnLine.x, pointOnLine.y);
}