Java MultiLineString.setSRID方法代碼示例

import com.vividsolutions.jts.geom.MultiLineString; //導入方法依賴的package包/類
private MultiLineString parseJson(String json) {
	JSONObject obj = null;
	MultiLineString multiLine = null;
	GeometryFactory geomF = new GeometryFactory(new PrecisionModel(), 4326);
	try {
		obj = new JSONObject(json);
		String type = obj.getString("type");

		if (!type.equals("MultiLineString")) {
			return null;
		} else {
			List<LineString> lineList = new ArrayList<LineString>();
			// get lines of MultiLineString
			JSONArray lines = obj.getJSONArray("coordinates");
			for (int i = 0; i < lines.length(); i++) {
				// get points of line
				JSONArray points = lines.getJSONArray(i);
				List<Coordinate> pointList = new ArrayList<Coordinate>();
				for (int a = 0; a < points.length(); a++) {
					// get coordinate
					JSONArray coord = points.getJSONArray(a);
					pointList.add(new Coordinate(coord.getDouble(0), coord.getDouble(1), coord.getDouble(2)));
				}
				lineList.add(geomF.createLineString(pointList.toArray(new Coordinate[pointList.size()])));
			}
			multiLine = geomF.createMultiLineString(lineList.toArray(new LineString[lineList.size()]));
			multiLine.setSRID(4326);
		}
	} catch (JSONException e) {
		e.printStackTrace();
	}

	return multiLine;

}
 

import com.vividsolutions.jts.geom.MultiLineString; //導入方法依賴的package包/類
/**
 * Returns a completed multi type.
 *
 * @param geometryFactory The factory this method should use to create the
 *        multi type.
 *
 * @return Appropriate multi geometry type.
 */
public Geometry create(GeometryFactory geometryFactory) {
    if (internalType.equals("Point")) {
        Point[] pointArray = geometryFactory.toPointArray(geometries);            
        MultiPoint multiPoint = geometryFactory.createMultiPoint(pointArray);
        multiPoint.setUserData( getSRS() );
        multiPoint.setSRID( getSRID() );

        return multiPoint;
    } else if (internalType.equals("LineString")) {
        LineString[] lineStringArray = geometryFactory
                .toLineStringArray(geometries);
        MultiLineString multiLineString = geometryFactory.createMultiLineString(lineStringArray);
        multiLineString.setUserData( getSRS() );
        multiLineString.setSRID( getSRID() );

        return multiLineString;
    } else if (internalType.equals("Polygon")) {
        Polygon[] polygonArray = geometryFactory.toPolygonArray(geometries);
        MultiPolygon multiPolygon = geometryFactory.createMultiPolygon(polygonArray);
        multiPolygon.setUserData( getSRS() );
        multiPolygon.setSRID( getSRID() );

        return multiPolygon;
    } else {
        return null;
    }
}
 

import com.vividsolutions.jts.geom.MultiLineString; //導入方法依賴的package包/類
private MultiLineString[] splitMultiLineString(MultiLineString mLine, Coordinate c) {
	List<LineString> lineArr1 = new ArrayList<LineString>();
	List<LineString> lineArr2 = new ArrayList<LineString>();
	List<Coordinate> coords1 = new ArrayList<Coordinate>();
	List<Coordinate> coords2 = new ArrayList<Coordinate>();

	boolean splittingPointReached = false;
	for (int i = 0; i < mLine.getNumGeometries(); i++) {
		LineString line = (LineString) mLine.getGeometryN(i);
		for (int a = 0; a < line.getCoordinates().length - 1; a++) {
			if (splittingPointReached == false) {
				coords1.add(line.getCoordinates()[a]);
			} else {
				coords2.add(line.getCoordinates()[a]);
				if (a == line.getCoordinates().length - 2) {
					// add last coordinate
					coords2.add(line.getCoordinates()[a + 1]);
				}
			}

			// check whether current coordinate is equals to the given
			// coordinate at which the MultiLineString has to be splitted
			if (c.equals3D(line.getCoordinates()[a])) {
				splittingPointReached = true;
			}
		}

		if (coords1.size() > 1) {
			lineArr1.add(geomF.createLineString(coords1.toArray(new Coordinate[coords1.size()])));
		}
		coords1 = new ArrayList<Coordinate>();

		if (coords2.size() > 1) {
			lineArr2.add(geomF.createLineString(coords2.toArray(new Coordinate[coords2.size()])));
		}
		coords2 = new ArrayList<Coordinate>();

	}

	// build Array

	MultiLineString[] mLineArr = new MultiLineString[2];
	MultiLineString mLine1 = geomF.createMultiLineString(lineArr1.toArray(new LineString[lineArr1.size()]));
	mLine1.setSRID(4326);
	MultiLineString mLine2 = geomF.createMultiLineString(lineArr2.toArray(new LineString[lineArr2.size()]));
	mLine2.setSRID(4326);

	mLineArr[0] = mLine1;
	mLineArr[1] = mLine2;

	return mLineArr;
}
 

import com.vividsolutions.jts.geom.MultiLineString; //導入方法依賴的package包/類
private void addSmoothedZValues(GpsTracePart part, Double[] eleSmoothed) {

		GeometryFactory geomF = new GeometryFactory();
		// create copy of geometry and exchange the z-values

		// MultiLineString geomSmoothed = (MultiLineString)
		// part.getGeom().clone();

		int newValueCounter = 0;

		// exchange z-Values
		List<LineString> lines = new ArrayList<LineString>();
		for (int i = 0; i < part.getGeom().getNumGeometries(); i++) {
			List<Coordinate> coords = new ArrayList<Coordinate>();
			Coordinate[] cArr = part.getGeom().getGeometryN(i).getCoordinates();
			for (int a = 0; a < cArr.length; a++) {
				Double newZ = eleSmoothed[newValueCounter];

				if (!newZ.equals(Double.NaN)) {
					Coordinate c = new Coordinate(cArr[a].x, cArr[a].y, newZ);
					coords.add(c);
				}
				newValueCounter++;
			}
			// create line string and add to linestring list
			if (coords.size() > 1) {
				LineString line = geomF.createLineString(coords.toArray(new Coordinate[coords.size()]));
				if (line.isValid()) {
					lines.add(line);
				}
			}

		}

		if (!lines.isEmpty()) {
			MultiLineString geomSmoothed = geomF.createMultiLineString(lines.toArray(new LineString[lines.size()]));
			geomSmoothed.setSRID(4326);
			part.setGeomSmoothed(geomSmoothed);

		} else {
			part.setGeomSmoothed(null);

		}
	}