/** * Adds a point to the current line. * * @param pt the Coordinate to add */ public void add(Coordinate pt) { add(pt, true); }
/** * Assumes input is valid (e.g. start <= end) * * @param start * @param end * @return a linear geometry */ private Geometry computeLinear(LinearLocation start, LinearLocation end) { LinearGeometryBuilder builder = new LinearGeometryBuilder(line.getFactory()); builder.setFixInvalidLines(true); if (! start.isVertex()) builder.add(start.getCoordinate(line)); for (LinearIterator it = new LinearIterator(line, start); it.hasNext(); it.next()) { if (end.compareLocationValues(it.getComponentIndex(), it.getVertexIndex(), 0.0) < 0) break; Coordinate pt = it.getSegmentStart(); builder.add(pt); if (it.isEndOfLine()) builder.endLine(); } if (! end.isVertex()) builder.add(end.getCoordinate(line)); return builder.getGeometry(); }
public Geometry getGeometry() { // end last line in case it was not done by user endLine(); return geomFact.buildGeometry(lines); } }
/** * Terminate the current LineString. */ public void endLine() { if (coordList == null) { return; } if (ignoreInvalidLines && coordList.size() < 2) { coordList = null; return; } Coordinate[] rawPts = coordList.toCoordinateArray(); Coordinate[] pts = rawPts; if (fixInvalidLines) pts = validCoordinateSequence(rawPts); coordList = null; LineString line = null; try { line = geomFact.createLineString(pts); } catch (IllegalArgumentException ex) { // exception is due to too few points in line. // only propagate if not ignoring short lines if (! ignoreInvalidLines) throw ex; } if (line != null) lines.add(line); }