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

  1. @Override
  2. public boolean test(Geometry geom1, Geometry geom2) {
  3.   if ( geom1 != null && geom1.isEmpty() ) {
  4.     return geom2 == null || geom2.isEmpty();
  5.   }
  6.   return super.test( geom1, geom2 );
  7. }

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

  1. @Override
  2. public boolean test(Geometry geom1, Geometry geom2) {
  3.   if ( geom1 != null && geom1.isEmpty() ) {
  4.     return geom2 == null || geom2.isEmpty();
  5.   }
  6.   return super.test( geom1, geom2 );
  7. }

代码示例来源：origin: prestodb/presto

  1. @SqlNullable
  2. @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.")
  3. @ScalarFunction("line_locate_point")
  4. @SqlType(DOUBLE)
  5. public static Double lineLocatePoint(@SqlType(GEOMETRY_TYPE_NAME) Slice lineSlice, @SqlType(GEOMETRY_TYPE_NAME) Slice pointSlice)
  6. {
  7.   Geometry line = JtsGeometrySerde.deserialize(lineSlice);
  8.   Geometry point = JtsGeometrySerde.deserialize(pointSlice);
  9.   if (line.isEmpty() || point.isEmpty()) {
  10.     return null;
  11.   }
  12.   GeometryType lineType = GeometryType.getForJtsGeometryType(line.getGeometryType());
  13.   if (lineType != GeometryType.LINE_STRING && lineType != GeometryType.MULTI_LINE_STRING) {
  14.     throw new PrestoException(INVALID_FUNCTION_ARGUMENT, format("First argument to line_locate_point must be a LineString or a MultiLineString. Got: %s", line.getGeometryType()));
  15.   }
  16.   GeometryType pointType = GeometryType.getForJtsGeometryType(point.getGeometryType());
  17.   if (pointType != GeometryType.POINT) {
  18.     throw new PrestoException(INVALID_FUNCTION_ARGUMENT, format("Second argument to line_locate_point must be a Point. Got: %s", point.getGeometryType()));
  19.   }
  20.   return new LengthIndexedLine(line).indexOf(point.getCoordinate()) / line.getLength();
  21. }

代码示例来源：origin: prestodb/presto

  1. private static void writeEnvelope(Geometry geometry, SliceOutput output)
  2. {
  3.   if (geometry.isEmpty()) {
  4.     for (int i = 0; i < 4; i++) {
  5.       output.writeDouble(NaN);
  6.     }
  7.     return;
  8.   }
  9.   Envelope envelope = geometry.getEnvelopeInternal();
  10.   output.writeDouble(envelope.getMinX());
  11.   output.writeDouble(envelope.getMinY());
  12.   output.writeDouble(envelope.getMaxX());
  13.   output.writeDouble(envelope.getMaxY());
  14. }

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

  1. @Override
  2. public boolean test(Geometry geom1, Geometry geom2) {
  3.   if ( geom1 == null ) {
  4.     return geom2 == null;
  5.   }
  6.   if ( geom1.isEmpty() ) {
  7.     return geom2.isEmpty();
  8.   }
  9.   if ( !equalSRID( geom1, geom2 ) ) {
  10.     return false;
  11.   }
  12.   if ( geom1 instanceof GeometryCollection ) {
  13.     if ( !( geom2 instanceof GeometryCollection ) ) {
  14.       return false;
  15.     }
  16.     GeometryCollection expectedCollection = (GeometryCollection) geom1;
  17.     GeometryCollection receivedCollection = (GeometryCollection) geom2;
  18.     for ( int partIndex = 0; partIndex < expectedCollection.getNumGeometries(); partIndex++ ) {
  19.       Geometry partExpected = expectedCollection.getGeometryN( partIndex );
  20.       Geometry partReceived = receivedCollection.getGeometryN( partIndex );
  21.       if ( !test( partExpected, partReceived ) ) {
  22.         return false;
  23.       }
  24.     }
  25.     return true;
  26.   }
  27.   else {
  28.     return testSimpleGeometryEquality( geom1, geom2 );
  29.   }
  30. }

代码示例来源：origin: geotools/geotools

  1. public static boolean isEmpty(Geometry arg0) {
  2.   if (arg0 == null) return false;
  3.   Geometry _this = arg0;
  4.   return _this.isEmpty();
  5. }

代码示例来源：origin: geotools/geotools

  1. public boolean isEmpty() {
  2.   return geometry.isEmpty();
  3. }

代码示例来源：origin: geotools/geotools

  1. public MultiLevelROIGeometryOverviews(
  2.     Geometry footprint,
  3.     List<Geometry> multilevelFootprints,
  4.     boolean overviewsInRasterSpace,
  5.     Hints hints) {
  6.   this.originalFootprint = footprint;
  7.   this.multilevelFootprints = multilevelFootprints;
  8.   this.numOverviews = multilevelFootprints != null ? multilevelFootprints.size() : 0;
  9.   this.overviewsRoiInRasterSpace = overviewsInRasterSpace;
  10.   this.empty = originalFootprint.isEmpty();
  11.   this.hints = hints;
  12. }

代码示例来源：origin: geotools/geotools

  1. @Override
  2. public void setGeometryValue(
  3.     Geometry g, int dimension, int srid, Class binding, PreparedStatement ps, int column)
  4.     throws SQLException {
  5.   if (g == null || g.isEmpty()) {
  6.     ps.setNull(column, Types.BLOB);
  7.     return;
  8.   }
  9.   ps.setBytes(column, GeoDB.gToWKB(g));
  10. }

代码示例来源：origin: geotools/geotools

  1. @Override
  2. public void filter(Geometry geom) {
  3.   if (!(geom instanceof GeometryCollection)
  4.       && geom.getDimension() == targetDimension
  5.       && !geom.isEmpty()) {
  6.     geometries.add(geom);
  7.   }
  8. }

代码示例来源：origin: geotools/geotools

  1. public Object getProperty(Object object, QName name) {
  2.     // hack for xlink stuff
  3.     Geometry geometry = (Geometry) object;
  4.     if (geometry.isEmpty()) {
  5.       return null;
  6.     }
  8.     if ("pos".equals(name.getLocalPart())) {
  9.       Point point = (Point) object;
  10.       return point.getCoordinateSequence();
  11.     }
  13.     return null;
  14.   }
  15. }

代码示例来源：origin: geotools/geotools

  1. /**
  2.  * Returns true if the geometry is fully empty
  3.  *
  4.  * @param geometry
  5.  * @return
  6.  */
  7. private boolean isEmpty(Literal geometry) {
  8.   if (geometry != null) {
  9.     Geometry g = geometry.evaluate(null, Geometry.class);
  10.     return g == null || g.isEmpty();
  11.   }
  12.   return false;
  13. }

代码示例来源：origin: geotools/geotools

  1. public void encodeGeometryValue(Geometry value, int srid, StringBuffer sql) throws IOException {
  2.   if (value == null || value.isEmpty()) {
  3.     sql.append("ST_GeomFromText ('");
  4.     sql.append(new WKTWriter().write(value));
  5.     sql.append("',");
  6.     sql.append(srid);
  7.     sql.append(")");
  8.   } else {
  9.     sql.append("NULL");
  10.   }
  11. }

代码示例来源：origin: geotools/geotools

  1. @Override
  2. public void setGeometryValue(
  3.     Geometry g, int dimension, int srid, Class binding, PreparedStatement ps, int column)
  4.     throws SQLException {
  5.   if (g == null || g.isEmpty()) {
  6.     // ps.setNull(column, Types.OTHER);
  7.     ps.setBytes(column, null);
  8.     return;
  9.   }
  10.   DB2WKBWriter w = new DB2WKBWriter(dimension, getDb2DialectInfo().isHasOGCWkbZTyps());
  11.   byte[] bytes = w.write(g);
  12.   ps.setBytes(column, bytes);
  13. }

代码示例来源：origin: geotools/geotools

  1. private static void addCoordinates(List list, MultiPoint points) {
  2.   for (int i = 0; i < points.getNumGeometries(); i++) {
  3.     Geometry geometryN = points.getGeometryN(i);
  4.     if (geometryN != null && !geometryN.isEmpty()) addCoordinates(list, (Point) geometryN);
  5.   }
  6. }

代码示例来源：origin: geotools/geotools

  1. private static void addCoordinates(List list, MultiLineString lines) {
  2.   for (int i = 0; i < lines.getNumGeometries(); i++) {
  3.     Geometry geometryN = lines.getGeometryN(i);
  4.     if (geometryN != null && !geometryN.isEmpty())
  5.       addCoordinates(list, (LineString) geometryN);
  6.   }
  7. }

代码示例来源：origin: geotools/geotools

  1. @DescribeProcess(
  2.   title = "Empty Test",
  3.   description = "Tests if a geometry contains no vertices."
  4. )
  5. @DescribeResult(description = "True if the input is empty")
  6. public static boolean isEmpty(
  7.     @DescribeParameter(name = "geom", description = "Input geometry") Geometry geom) {
  8.   return geom.isEmpty();
  9. }

代码示例来源：origin: geotools/geotools

  1. private static void addCoordinates(List list, MultiPolygon polys) {
  2.   for (int i = 0; i < polys.getNumGeometries(); i++) {
  3.     Geometry geometryN = polys.getGeometryN(i);
  4.     if (geometryN != null && !geometryN.isEmpty())
  5.       addCoordinates(list, (Polygon) geometryN);
  6.   }
  7. }

代码示例来源：origin: geotools/geotools

  1. /**
  2.  * Writes a Geometry instance as GeoJSON.
  3.  *
  4.  * @param geometry The geometry.
  5.  * @param output The output. See {@link GeoJSONUtil#toWriter(Object)} for details.
  6.  */
  7. public void write(Geometry geometry, Object output) throws IOException {
  8.   if (geometry == null || geometry.isEmpty()) {
  9.     GeoJSONUtil.encode("null", output);
  10.   } else {
  11.     GeoJSONUtil.encode(create(geometry), output);
  12.   }
  13. }

代码示例来源：origin: geotools/geotools

  1. @Test
  2. public void testGeotXYWZ() throws Exception {
  3.   clipper = new GeometryClipper(new Envelope(-11, 761, -11, 611));
  4.   Geometry g =
  5.       wkt.read(
  6.           "POLYGON((367 -13, 459 105, 653 -42, 611 -96, 562 -60, 514 -124, 367 -13))");
  7.   // System.out.println(g.getNumPoints());
  8.   Geometry clipped = clipper.clip(g, false);
  9.   assertNotNull(clipped);
  10.   assertTrue(!clipped.isEmpty());
  11.   //        System.out.println(clipped);
  12. }

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