本文整理了Java中com.vividsolutions.jts.geom.GeometryFactory.buildGeometry()方法的一些代码示例，展示了GeometryFactory.buildGeometry()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。GeometryFactory.buildGeometry()方法的具体详情如下：
包路径：com.vividsolutions.jts.geom.GeometryFactory
类名称：GeometryFactory
方法名：buildGeometry

GeometryFactory.buildGeometry介绍

[英]Build an appropriate Geometry, MultiGeometry, or GeometryCollection to contain the Geometrys in it. For example:

• If geomList contains a single Polygon, the Polygon is returned.
• If geomList contains several Polygons, a MultiPolygon is returned.
• If geomList contains some Polygons and some LineStrings, a GeometryCollection is returned.
• If geomList is empty, an empty GeometryCollection is returned
  Note that this method does not "flatten" Geometries in the input, and hence if any MultiGeometries are contained in the input a GeometryCollection containing them will be returned.
  [中]构建适当的Geometry、MultiGeometry或GeometryCollection以包含其中的Geometrys。例如：
  *如果geomList包含单个Polygon，则返回Polygon。
  *如果geomList包含多个Polygon，则返回一个MultiPolygon。
  *如果geomList包含一些Polygon和一些LineStrings，则返回一个GeometryCollection。
  *如果geomList为空，则返回一个空GeometryCollection
  请注意，此方法不会“展平”输入中的几何图形，因此，如果输入中包含任何多重几何图形，将返回包含它们的GeometryCollection。

代码示例

代码示例来源：origin: opentripplanner/OpenTripPlanner

public void findHull() {
  LOG.info("finding hull of graph...");
  LOG.debug("using only stops? {}", useOnlyStops);
  if (bufferMeters < prototypeRoutingRequest.maxWalkDistance)
    LOG.warn("geographic filter buffer is smaller than max walk distance, this will probably yield incorrect results.");
  Graph graph= graphService.getRouter(prototypeRoutingRequest.routerId).graph;
  List<Geometry> geometries = new ArrayList<Geometry>();
  for (Vertex v : graph.getVertices()) {
    if (useOnlyStops && ! (v instanceof TransitStop))
      continue;
    Point pt = gf.createPoint(v.getCoordinate());
    Geometry geom = crudeProjectedBuffer(pt, bufferMeters);
    geometries.add(geom);
  }
  Geometry multiGeom = gf.buildGeometry(geometries);
  LOG.info("unioning hull...");
  hull = multiGeom.union();
  LOG.trace("hull is {}", hull.toText());
  // may lead to false rejections
  // DouglasPeuckerSimplifier simplifier = new DouglasPeuckerSimplifier();
}

代码示例来源：origin: opentripplanner/OpenTripPlanner

for (Integer threshold : bufferLists.keys()) {
  Collection<Geometry> buffers = bufferLists.get(threshold);
  Geometry geom = geomf.buildGeometry(buffers); // make geometry collection

代码示例来源：origin: com.vividsolutions/jts

public Geometry getGeometry()
 {
  // end last line in case it was not done by user
  endLine();
  return geomFact.buildGeometry(lines);
 }
}

代码示例来源：origin: com.vividsolutions/jts

private static Geometry convertSegStrings(Iterator it)
{
  GeometryFactory fact = new GeometryFactory();
  List lines = new ArrayList();
  while (it.hasNext()) {
    SegmentString ss = (SegmentString) it.next();
    LineString line = fact.createLineString(ss.getCoordinates());
    lines.add(line);
  }
  return fact.buildGeometry(lines);
}

代码示例来源：origin: com.vividsolutions/jts

private Geometry extractElements(Geometry geom, 
    boolean[] interacts, boolean isInteracting)
{
  List extractedGeoms = new ArrayList();
  for (int i = 0; i < geom.getNumGeometries(); i++) { 
    Geometry elem = geom.getGeometryN(i);
    if (interacts[i] == isInteracting)
      extractedGeoms.add(elem);
  }
  return geomFactory.buildGeometry(extractedGeoms);
}

代码示例来源：origin: com.vividsolutions/jts

private Geometry bufferUnion(List geoms)
{
  GeometryFactory factory = ((Geometry) geoms.get(0)).getFactory();
  Geometry gColl = factory.buildGeometry(geoms);
  Geometry unionAll = gColl.buffer(0.0);
 return unionAll;
}

代码示例来源：origin: com.vividsolutions/jts

private Geometry getPolygonLines(Geometry g)
{
  List lines = new ArrayList();
  LinearComponentExtracter lineExtracter = new LinearComponentExtracter(lines);
  List polys = PolygonExtracter.getPolygons(g);
  for (Iterator i = polys.iterator(); i.hasNext(); ) {
    Polygon poly = (Polygon) i.next();
    poly.apply(lineExtracter);
  }
  return g.getFactory().buildGeometry(lines);
}

代码示例来源：origin: com.vividsolutions/jts

/**
  * Computes the combination of the input geometries
  * to produce the most appropriate {@link Geometry} or {@link GeometryCollection}
  * 
  * @return a Geometry which is the combination of the inputs
  */
public Geometry combine()
{
  List elems = new ArrayList();
  for (Iterator i = inputGeoms.iterator(); i.hasNext(); ) {
    Geometry g = (Geometry) i.next();
    extractElements(g, elems);
  }
 
 if (elems.size() == 0) {
   if (geomFactory != null) {
  // return an empty GC
     return geomFactory.createGeometryCollection(null);
   }
   return null;
 }
 // return the "simplest possible" geometry
 return geomFactory.buildGeometry(elems);
}

代码示例来源：origin: com.vividsolutions/jts

private Geometry computeGeometry( List resultPointList,
                   List resultLineList,
                   List resultPolyList,
                   int opcode)
{
 List geomList = new ArrayList();
 // element geometries of the result are always in the order P,L,A
 geomList.addAll(resultPointList);
 geomList.addAll(resultLineList);
 geomList.addAll(resultPolyList);
 
 //*
 if (geomList.isEmpty())
   return createEmptyResult(opcode, arg[0].getGeometry(), arg[1].getGeometry(), geomFact);
 //*/
 
 // build the most specific geometry possible
 return geomFact.buildGeometry(geomList);
}

代码示例来源：origin: com.vividsolutions/jts

private Geometry extractByEnvelope(Envelope env, Geometry geom, 
    List disjointGeoms)
{
  List intersectingGeoms = new ArrayList();
  for (int i = 0; i < geom.getNumGeometries(); i++) { 
    Geometry elem = geom.getGeometryN(i);
    if (elem.getEnvelopeInternal().intersects(env))
      intersectingGeoms.add(elem);
    else
      disjointGeoms.add(elem);
  }
  return geomFactory.buildGeometry(intersectingGeoms);
}

代码示例来源：origin: com.vividsolutions/jts

protected Geometry transformMultiPoint(MultiPoint geom, Geometry parent) {
 List transGeomList = new ArrayList();
 for (int i = 0; i < geom.getNumGeometries(); i++) {
  Geometry transformGeom = transformPoint((Point) geom.getGeometryN(i), geom);
  if (transformGeom == null) continue;
  if (transformGeom.isEmpty()) continue;
  transGeomList.add(transformGeom);
 }
 return factory.buildGeometry(transGeomList);
}

代码示例来源：origin: com.vividsolutions/jts

protected Geometry transformMultiLineString(MultiLineString geom, Geometry parent) {
 List transGeomList = new ArrayList();
 for (int i = 0; i < geom.getNumGeometries(); i++) {
  Geometry transformGeom = transformLineString((LineString) geom.getGeometryN(i), geom);
  if (transformGeom == null) continue;
  if (transformGeom.isEmpty()) continue;
  transGeomList.add(transformGeom);
 }
 return factory.buildGeometry(transGeomList);
}

代码示例来源：origin: com.vividsolutions/jts

protected Geometry transformMultiPolygon(MultiPolygon geom, Geometry parent) {
 List transGeomList = new ArrayList();
 for (int i = 0; i < geom.getNumGeometries(); i++) {
  Geometry transformGeom = transformPolygon((Polygon) geom.getGeometryN(i), geom);
  if (transformGeom == null) continue;
  if (transformGeom.isEmpty()) continue;
  transGeomList.add(transformGeom);
 }
 return factory.buildGeometry(transGeomList);
}

代码示例来源：origin: com.vividsolutions/jts

/**
 * Builds a geometry ({@link LineString} or {@link MultiLineString} )
 * representing the sequence.
 *
 * @param sequences a List of Lists of DirectedEdges with
 *   LineMergeEdges as their parent edges.
 * @return the sequenced geometry, or <code>null</code> if no sequence exists
 */
private Geometry buildSequencedGeometry(List sequences)
{
 List lines = new ArrayList();
 for (Iterator i1 = sequences.iterator(); i1.hasNext(); ) {
  List seq = (List) i1.next();
  for (Iterator i2 = seq.iterator(); i2.hasNext(); ) {
   DirectedEdge de = (DirectedEdge) i2.next();
   LineMergeEdge e = (LineMergeEdge) de.getEdge();
   LineString line = e.getLine();
   LineString lineToAdd = line;
   if (! de.getEdgeDirection() && ! line.isClosed())
    lineToAdd = reverse(line);
   lines.add(lineToAdd);
  }
 }
 if (lines.size() == 0)
  return factory.createMultiLineString(new LineString[0]);
 return factory.buildGeometry(lines);
}

代码示例来源：origin: com.vividsolutions/jts

polys.add(geometryFactory.createPolygon(shell, holeArray));
return geometryFactory.buildGeometry(polys);

代码示例来源：origin: com.vividsolutions/jts

protected Geometry transformGeometryCollection(GeometryCollection geom, Geometry parent) {
 List transGeomList = new ArrayList();
 for (int i = 0; i < geom.getNumGeometries(); i++) {
  Geometry transformGeom = transform(geom.getGeometryN(i));
  if (transformGeom == null) continue;
  if (pruneEmptyGeometry && transformGeom.isEmpty()) continue;
  transGeomList.add(transformGeom);
 }
 if (preserveGeometryCollectionType)
  return factory.createGeometryCollection(GeometryFactory.toGeometryArray(transGeomList));
 return factory.buildGeometry(transGeomList);
}

代码示例来源：origin: com.vividsolutions/jts

/**
 * Maps the members of a {@link Geometry}
 * (which may be atomic or composite)
 * into another <tt>Geometry</tt> of most specific type.
 * <tt>null</tt> results are skipped.
 * In the case of hierarchical {@link GeometryCollection}s,
 * only the first level of members are mapped.
 *  
 * @param geom the input atomic or composite geometry
 * @param op the mapping operation
 * @return a result collection or geometry of most specific type
 */
public static Geometry map(Geometry geom, MapOp op)
{
 List mapped = new ArrayList();
 for (int i = 0; i < geom.getNumGeometries(); i++) {
  Geometry g = op.map(geom.getGeometryN(i));
  if (g != null)
   mapped.add(g);
 }
 return geom.getFactory().buildGeometry(mapped);
}

代码示例来源：origin: com.vividsolutions/jts

if (shell != null) components.add(shell);
components.addAll(holes);
return factory.buildGeometry(components);

代码示例来源：origin: com.vividsolutions/jts

/**
 * Converts text rendered in the given {@link Font} to a {@link Geometry}
 * 
 * @param text the text to render
 * @param font  the font to render with
 * @param flatness the flatness to use
 * @param geomFact the geometryFactory to use to create the result
 * @return a polygonal geometry representing the rendered text
 */
public static Geometry read(String text, Font font, double flatness, GeometryFactory geomFact)
{
 char[] chs = text.toCharArray();
 FontRenderContext fontContext = new FontRenderContext(null, false, true);
 GlyphVector gv = font.createGlyphVector(fontContext, chs);
 List polys = new ArrayList();
 for (int i = 0; i < gv.getNumGlyphs(); i++) {
  Geometry geom = ShapeReader.read(gv.getGlyphOutline(i), flatness, geomFact);
  for (int j = 0; j < geom.getNumGeometries(); j++) {
   polys.add(geom.getGeometryN(j));
  }
 }
 return geomFact.buildGeometry(polys);
}

代码示例来源：origin: com.vividsolutions/jts

Geometry resultGeom = geomFact.buildGeometry(resultPolyList);
return resultGeom;