private void init(Geometry geom) {
List lines = LinearComponentExtracter.getLines(geom);
for (Iterator i = lines.iterator(); i.hasNext(); ) {
LineString line = (LineString) i.next();
Coordinate[] pts = line.getCoordinates();
addLine(pts);
}
}
private void init() {
Coordinate[] pts = parentLine.getCoordinates();
segs = new TaggedLineSegment[pts.length - 1];
for (int i = 0; i < pts.length - 1; i++) {
TaggedLineSegment seg = new TaggedLineSegment(pts[i], pts[i + 1], parentLine, i);
segs[i] = seg;
}
}
/** Add a ring to a builder */
private void addRing(LineString r, Geobuf.Data.Geometry.Builder builder) {
// skip last point, same as first
builder.addLengths(r.getNumPoints() - 1);
long x, y, prevX = 0, prevY = 0;
// last point is same as first, skip
for (int i = 0; i < r.getNumPoints() - 1; i++) {
// delta code
Coordinate coord = r.getCoordinateN(i);
// note that roundoff errors do not accumulate
x = (long) (coord.x * precisionMultiplier);
y = (long) (coord.y * precisionMultiplier);
builder.addCoords(x - prevX);
builder.addCoords(y - prevY);
prevX = x;
prevY = y;
}
}
public LinearRing asLinearRing() {
return parentLine.getFactory().createLinearRing(extractCoordinates(resultSegs));
}
public Coordinate[] getParentCoordinates() {
return parentLine.getCoordinates();
}
/**
* Transforms a {@link LineString} geometry.
*
* @param geom
* @param parent
* @return
*/
protected Geometry transformLineString(LineString geom, Geometry parent) {
// should check for 1-point sequences and downgrade them to points
return factory.createLineString(transformCoordinates(geom.getCoordinateSequence(), geom));
}