public LinearRing createLinearRing(CoordinateSequence cs) { if (cs.getCoordinate(0).equals(cs.getCoordinate(cs.size() - 1))) return super.createLinearRing(cs); // add a new coordinate to close the ring CoordinateSequenceFactory csFact = getCoordinateSequenceFactory(); CoordinateSequence csNew = csFact.create(cs.size() + 1, cs.getDimension()); CoordinateSequences.copy(cs, 0, csNew, 0, cs.size()); CoordinateSequences.copyCoord(csNew, 0, csNew, csNew.size() - 1); return super.createLinearRing(csNew); }
private CoordinateSequence readCoordinateSequence(int size) throws IOException { CoordinateSequence seq = csFactory.create(size, inputDimension); int targetDim = seq.getDimension(); if (targetDim > inputDimension) targetDim = inputDimension; for (int i = 0; i < size; i++) { readCoordinate(); for (int j = 0; j < targetDim; j++) { seq.setOrdinate(i, j, ordValues[j]); } } return seq; }
public static final int getCoordSequenceDim(CoordinateSequence coords) { if (coords == null || coords.size() == 0) return 0; // JTS has a really strange way to handle dimensions! // Just have a look at PackedCoordinateSequence and // CoordinateArraySequence int dimensions = coords.getDimension(); if (dimensions == 3) { // CoordinateArraySequence will always return 3, so we have to // check, if // the third ordinate contains NaN, then the geom is actually // 2-dimensional return Double.isNaN(coords.getOrdinate(0, CoordinateSequence.Z)) ? 2 : 3; } else { return dimensions; } }
public void writeCoordinates(CoordinateSequence c, ContentHandler output) throws SAXException { output.startElement("", "coordinates", "coordinates", atts); final int coordCount = c.size(); // used to check whether the coordseq handles a third dimension or not final int coordSeqDimension = c.getDimension(); double x, y, z; // write down a coordinate at a time for (int i = 0, n = coordCount; i < n; i++) { x = c.getOrdinate(i, 0); y = c.getOrdinate(i, 1); // clear the buffer coordBuff.setLength(0); // format x into buffer and append delimiter formatDecimal(x, coordBuff); coordBuff.append(coordinateDelimiter); // format y into buffer formatDecimal(y, coordBuff); if (coordSeqDimension > 2 && !Double.isNaN(c.getOrdinate(i, 2))) { coordBuff.append(coordinateDelimiter); formatDecimal(c.getOrdinate(i, 2), coordBuff); } // if there is another coordinate, tack on a tuple delimiter if (i + 1 < coordCount) { coordBuff.append(tupleDelimiter); } // make sure our character buffer is big enough if (coordBuff.length() > buff.length) { buff = new char[coordBuff.length()]; } // copy the characters coordBuff.getChars(0, coordBuff.length(), buff, 0); // finally, output output.characters(buff, 0, coordBuff.length()); } output.endElement(null, "coordinates", "coordinates"); }