org.locationtech.jts.geom.Geometry.isEmpty()方法的使用及代码示例

x33g5p2x  于2022-01-19 转载在 其他  
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本文整理了Java中org.locationtech.jts.geom.Geometry.isEmpty()方法的一些代码示例，展示了Geometry.isEmpty()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。Geometry.isEmpty()方法的具体详情如下：
包路径：org.locationtech.jts.geom.Geometry
类名称：Geometry
方法名：isEmpty

Geometry.isEmpty介绍

[英]Tests whether the set of points covered by this Geometry is empty.
[中]测试此Geometry覆盖的点集是否为空。

代码示例

代码示例来源：origin: hibernate/hibernate-orm

@Override
public boolean test(Geometry geom1, Geometry geom2) {
  if ( geom1 != null && geom1.isEmpty() ) {
    return geom2 == null || geom2.isEmpty();
  }
  return super.test( geom1, geom2 );
}

代码示例来源：origin: hibernate/hibernate-orm

@Override
public boolean test(Geometry geom1, Geometry geom2) {
  if ( geom1 != null && geom1.isEmpty() ) {
    return geom2 == null || geom2.isEmpty();
  }
  return super.test( geom1, geom2 );
}

代码示例来源：origin: prestodb/presto

@SqlNullable
@Description("Returns a float between 0 and 1 representing the location of the closest point on the LineString to the given Point, as a fraction of total 2d line length.")
@ScalarFunction("line_locate_point")
@SqlType(DOUBLE)
public static Double lineLocatePoint(@SqlType(GEOMETRY_TYPE_NAME) Slice lineSlice, @SqlType(GEOMETRY_TYPE_NAME) Slice pointSlice)
{
  Geometry line = JtsGeometrySerde.deserialize(lineSlice);
  Geometry point = JtsGeometrySerde.deserialize(pointSlice);
  if (line.isEmpty() || point.isEmpty()) {
    return null;
  }
  GeometryType lineType = GeometryType.getForJtsGeometryType(line.getGeometryType());
  if (lineType != GeometryType.LINE_STRING && lineType != GeometryType.MULTI_LINE_STRING) {
    throw new PrestoException(INVALID_FUNCTION_ARGUMENT, format("First argument to line_locate_point must be a LineString or a MultiLineString. Got: %s", line.getGeometryType()));
  }
  GeometryType pointType = GeometryType.getForJtsGeometryType(point.getGeometryType());
  if (pointType != GeometryType.POINT) {
    throw new PrestoException(INVALID_FUNCTION_ARGUMENT, format("Second argument to line_locate_point must be a Point. Got: %s", point.getGeometryType()));
  }
  return new LengthIndexedLine(line).indexOf(point.getCoordinate()) / line.getLength();
}

代码示例来源：origin: prestodb/presto

private static void writeEnvelope(Geometry geometry, SliceOutput output)
{
  if (geometry.isEmpty()) {
    for (int i = 0; i < 4; i++) {
      output.writeDouble(NaN);
    }
    return;
  }
  Envelope envelope = geometry.getEnvelopeInternal();
  output.writeDouble(envelope.getMinX());
  output.writeDouble(envelope.getMinY());
  output.writeDouble(envelope.getMaxX());
  output.writeDouble(envelope.getMaxY());
}

代码示例来源：origin: hibernate/hibernate-orm

@Override
public boolean test(Geometry geom1, Geometry geom2) {
  if ( geom1 == null ) {
    return geom2 == null;
  }
  if ( geom1.isEmpty() ) {
    return geom2.isEmpty();
  }
  if ( !equalSRID( geom1, geom2 ) ) {
    return false;
  }
  if ( geom1 instanceof GeometryCollection ) {
    if ( !( geom2 instanceof GeometryCollection ) ) {
      return false;
    }
    GeometryCollection expectedCollection = (GeometryCollection) geom1;
    GeometryCollection receivedCollection = (GeometryCollection) geom2;
    for ( int partIndex = 0; partIndex < expectedCollection.getNumGeometries(); partIndex++ ) {
      Geometry partExpected = expectedCollection.getGeometryN( partIndex );
      Geometry partReceived = receivedCollection.getGeometryN( partIndex );
      if ( !test( partExpected, partReceived ) ) {
        return false;
      }
    }
    return true;
  }
  else {
    return testSimpleGeometryEquality( geom1, geom2 );
  }
}

代码示例来源：origin: geotools/geotools

public static boolean isEmpty(Geometry arg0) {
  if (arg0 == null) return false;
  Geometry _this = arg0;
  return _this.isEmpty();
}

代码示例来源：origin: geotools/geotools

public boolean isEmpty() {
  return geometry.isEmpty();
}

代码示例来源：origin: geotools/geotools

public MultiLevelROIGeometryOverviews(
    Geometry footprint,
    List<Geometry> multilevelFootprints,
    boolean overviewsInRasterSpace,
    Hints hints) {
  this.originalFootprint = footprint;
  this.multilevelFootprints = multilevelFootprints;
  this.numOverviews = multilevelFootprints != null ? multilevelFootprints.size() : 0;
  this.overviewsRoiInRasterSpace = overviewsInRasterSpace;
  this.empty = originalFootprint.isEmpty();
  this.hints = hints;
}

代码示例来源：origin: geotools/geotools

@Override
public void setGeometryValue(
    Geometry g, int dimension, int srid, Class binding, PreparedStatement ps, int column)
    throws SQLException {
  if (g == null || g.isEmpty()) {
    ps.setNull(column, Types.BLOB);
    return;
  }
  ps.setBytes(column, GeoDB.gToWKB(g));
}

代码示例来源：origin: geotools/geotools

@Override
public void filter(Geometry geom) {
  if (!(geom instanceof GeometryCollection)
      && geom.getDimension() == targetDimension
      && !geom.isEmpty()) {
    geometries.add(geom);
  }
}

代码示例来源：origin: geotools/geotools

public Object getProperty(Object object, QName name) {
    // hack for xlink stuff
    Geometry geometry = (Geometry) object;
    if (geometry.isEmpty()) {
      return null;
    }

    if ("pos".equals(name.getLocalPart())) {
      Point point = (Point) object;
      return point.getCoordinateSequence();
    }

    return null;
  }
}

代码示例来源：origin: geotools/geotools

/**
 * Returns true if the geometry is fully empty
 *
 * @param geometry
 * @return
 */
private boolean isEmpty(Literal geometry) {
  if (geometry != null) {
    Geometry g = geometry.evaluate(null, Geometry.class);
    return g == null || g.isEmpty();
  }
  return false;
}

代码示例来源：origin: geotools/geotools

public void encodeGeometryValue(Geometry value, int srid, StringBuffer sql) throws IOException {
  if (value == null || value.isEmpty()) {
    sql.append("ST_GeomFromText ('");
    sql.append(new WKTWriter().write(value));
    sql.append("',");
    sql.append(srid);
    sql.append(")");
  } else {
    sql.append("NULL");
  }
}

代码示例来源：origin: geotools/geotools

@Override
public void setGeometryValue(
    Geometry g, int dimension, int srid, Class binding, PreparedStatement ps, int column)
    throws SQLException {
  if (g == null || g.isEmpty()) {
    // ps.setNull(column, Types.OTHER);
    ps.setBytes(column, null);
    return;
  }
  DB2WKBWriter w = new DB2WKBWriter(dimension, getDb2DialectInfo().isHasOGCWkbZTyps());
  byte[] bytes = w.write(g);
  ps.setBytes(column, bytes);
}

代码示例来源：origin: geotools/geotools

private static void addCoordinates(List list, MultiPoint points) {
  for (int i = 0; i < points.getNumGeometries(); i++) {
    Geometry geometryN = points.getGeometryN(i);
    if (geometryN != null && !geometryN.isEmpty()) addCoordinates(list, (Point) geometryN);
  }
}

代码示例来源：origin: geotools/geotools

private static void addCoordinates(List list, MultiLineString lines) {
  for (int i = 0; i < lines.getNumGeometries(); i++) {
    Geometry geometryN = lines.getGeometryN(i);
    if (geometryN != null && !geometryN.isEmpty())
      addCoordinates(list, (LineString) geometryN);
  }
}

代码示例来源：origin: geotools/geotools

@DescribeProcess(
  title = "Empty Test",
  description = "Tests if a geometry contains no vertices."
)
@DescribeResult(description = "True if the input is empty")
public static boolean isEmpty(
    @DescribeParameter(name = "geom", description = "Input geometry") Geometry geom) {
  return geom.isEmpty();
}

代码示例来源：origin: geotools/geotools

private static void addCoordinates(List list, MultiPolygon polys) {
  for (int i = 0; i < polys.getNumGeometries(); i++) {
    Geometry geometryN = polys.getGeometryN(i);
    if (geometryN != null && !geometryN.isEmpty())
      addCoordinates(list, (Polygon) geometryN);
  }
}

代码示例来源：origin: geotools/geotools

/**
 * Writes a Geometry instance as GeoJSON.
 *
 * @param geometry The geometry.
 * @param output The output. See {@link GeoJSONUtil#toWriter(Object)} for details.
 */
public void write(Geometry geometry, Object output) throws IOException {
  if (geometry == null || geometry.isEmpty()) {
    GeoJSONUtil.encode("null", output);
  } else {
    GeoJSONUtil.encode(create(geometry), output);
  }
}

代码示例来源：origin: geotools/geotools

@Test
public void testGeotXYWZ() throws Exception {
  clipper = new GeometryClipper(new Envelope(-11, 761, -11, 611));
  Geometry g =
      wkt.read(
          "POLYGON((367 -13, 459 105, 653 -42, 611 -96, 562 -60, 514 -124, 367 -13))");
  // System.out.println(g.getNumPoints());
  Geometry clipped = clipper.clip(g, false);
  assertNotNull(clipped);
  assertTrue(!clipped.isEmpty());
  //        System.out.println(clipped);
}

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