org.locationtech.jts.geom.Geometry.getLength()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.getLength()方法的一些代码示例，展示了Geometry.getLength()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.getLength()方法的具体详情如下：
包路径：org.locationtech.jts.geom.Geometry
类名称：Geometry
方法名：getLength

Geometry.getLength介绍

[英]Returns the length of this Geometry. Linear geometries return their length. Areal geometries return their perimeter. They override this function to compute the area. Others return 0.0
[中]返回此Geometry的长度。线性几何体返回其长度。面积几何体返回其周长。它们覆盖此函数以计算面积。其他人返回0.0

代码示例

代码示例来源：origin: geotools/geotools

  1. public static double geomLength(Geometry arg0) {
  2.   if (arg0 == null) return 0d;
  3.   Geometry _this = arg0;
  4.   return _this.getLength();
  5. }

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: geotools/geotools

  1. public double getLength() {
  2.   return geometry.getLength();
  3. }

代码示例来源：origin: geotools/geotools

  1. @Override
  2. public void filter(Geometry gmtr) {
  3.   if (MultiPolygon.class.isAssignableFrom(binding)) {
  4.     if (gmtr.getArea() != 0.0d && gmtr.getGeometryType().equals("Polygon")) {
  5.       collection.add(gmtr);
  6.     }
  7.   }
  8.   if (MultiLineString.class.isAssignableFrom(binding)) {
  9.     if (gmtr.getLength() != 0.0d && gmtr.getGeometryType().equals("LineString")) {
  10.       collection.add(gmtr);
  11.     }
  12.   }
  13.   if (MultiPoint.class.isAssignableFrom(binding)) {
  14.     if (gmtr.getNumGeometries() > 0 && gmtr.getGeometryType().equals("Point")) {
  15.       collection.add(gmtr);
  16.     }
  17.   }
  18.   if (Point.class.isAssignableFrom(binding)) {
  19.     if (gmtr.getGeometryType().equals("Point")) {
  20.       collection.add(gmtr);
  21.     }
  22.   }
  23. }

代码示例来源：origin: geotools/geotools

  1. @DescribeProcess(
  2.   title = "Length",
  3.   description =
  4.       "Returns the total length of all line segments in a geometry. Measurement is given in the source units, so geographic coordinates are not recommended."
  5. )
  6. @DescribeResult(description = "Total perimeter of the geometry")
  7. public static double length(
  8.     @DescribeParameter(name = "geom", description = "Input geometry") Geometry geom) {
  9.   return geom.getLength();
  10. }

代码示例来源：origin: geotools/geotools

  1. if (g.getLength() != 0) {
  2.   lines.add((LineString) g);
  3.   return 1;

代码示例来源：origin: locationtech/jts

  1. private double positiveIndex(double index)
  2.  {
  3.   if (index >= 0.0) return index;
  4.   return linearGeom.getLength() + index;
  5.  }
  6. }

代码示例来源：origin: locationtech/jts

  1. /**
  2.  * Returns the index of the end of the line
  3.  * @return the end index
  4.  */
  5. public double getEndIndex()
  6. {
  7.  return linearGeom.getLength();
  8. }

代码示例来源：origin: locationtech/jts

  1. public double getLength()
  2. {
  3.  double sum = 0.0;
  4.  for (int i = 0; i < geometries.length; i++) {
  5.   sum += (geometries[i]).getLength();
  6.  }
  7.  return sum;
  8. }

代码示例来源：origin: locationtech/jts

  1. public int compare(Object o1, Object o2)
  2.  {
  3.   Geometry g1 = (Geometry) o1;
  4.   Geometry g2 = (Geometry) o2;
  5.   return Double.compare(g1.getLength(), g2.getLength());
  6.  }
  7. }

代码示例来源：origin: geotools/geotools

  1. private Geometry simpleOffsetTest(Geometry geom, final double offsetDistance) {
  2.   Geometry offset = offset(geom, offsetDistance);
  3.   assertTrue(offset.isValid());
  4.   assertTrue(offset.getLength() > 0);
  5.   assertEquals(abs(offsetDistance), offset.distance(geom), EPS * abs(offsetDistance));
  6.   offset.apply(

代码示例来源：origin: geotools/geotools

  1. @Test
  2. public void testSelfIntersectRight() throws Exception {
  3.   Geometry geom = geometry("LINESTRING(0 0, 10 0, 10 -10, 3 -10, 3 3)");
  4.   Geometry offset = offset(geom, -1);
  5.   assertTrue(offset.isValid());
  6.   assertTrue(offset.getLength() > 0);
  7.   // the offset line intersects the original one, because it's also self intersecting, so we
  8.   // cannot have this test
  9.   // assertEquals(2, offset.distance(geom), EPS);
  10.   assertEquals(geometry("LINESTRING (0 -1, 9 -1, 9 -9, 4 -9, 4 3)"), offset);
  11. }

代码示例来源：origin: geotools/geotools

  1. feature.getDefaultGeometryProperty()
  2.                 .getValue())
  3.         .getLength();
  4. if (calcLength == 0 || featureLength == 0) continue;
  5. Geometry extracted =
  6.             feature.getDefaultGeometryProperty()
  7.                 .getValue())
  8.         .getLength();
  9. if (calcLength == 0 || featureLength == 0) continue;
  10. Geometry extracted =
  11.             feature.getDefaultGeometryProperty()
  12.                 .getValue())
  13.         .getLength();
  14. if (calcLength == 0 || featureLength == 0) continue;
  15. Geometry extracted =
  16.     lengthIndexedLine.extractLine(
  17.         0, stopOffset * calcLength / featureLength);
  18. if (extracted.isEmpty() || extracted.getLength() == 0.0) {
  19.   LOGGER.info(
  20.       "Empty segment: featureFromMeasure="

代码示例来源：origin: geotools/geotools

  1. @Test
  2. public void testElongatedLoopGenerator() throws Exception {
  3.   Geometry geom = geometry("LINESTRING(0 0, 5 0, 5 -10, 7 -10, 7 0,  10 0)");
  4.   Geometry offset = offset(geom, 1.5);
  5.   assertTrue(offset.isValid());
  6.   assertTrue(offset.getLength() > 0);
  7.   // this one "fails", but the output cannot be really called wrong anymore, if we are trying
  8.   // to
  9.   // offset a road at least
  10.   Geometry expected =
  11.       geometry(
  12.           "LINESTRING (0 1.5, 5 1.5, 5.260472266500395 1.477211629518312, 5.513030214988503 1.4095389311788626, 5.75 1.299038105676658, 5.964181414529809 1.149066664678467, 6.149066664678467 0.9641814145298091, 6.299038105676658 0.7500000000000002, 6.409538931178862 0.5130302149885032, 6.477211629518312 0.2604722665003956, 6.5 0.0000000000000001, 6.5 -8.5, 5.5 -8.5, 5.5 0.0000000000000001, 5.522788370481688 0.2604722665003956, 5.590461068821138 0.5130302149885032, 5.700961894323342 0.7499999999999998, 5.850933335321533 0.9641814145298091, 6.035818585470191 1.149066664678467, 6.25 1.299038105676658, 6.486969785011497 1.4095389311788624, 6.739527733499605 1.477211629518312, 7 1.5, 10 1.5)");
  13.   assertTrue(expected.equalsExact(offset, 0.1));
  14. }

代码示例来源：origin: geotools/geotools

  1. @Test
  2. public void testSelfIntersectLeft() throws Exception {
  3.   Geometry geom = geometry("LINESTRING(0 0, 10 0, 10 -10, 3 -10, 3 3)");
  4.   Geometry offset = offset(geom, 2);
  5.   assertTrue(offset.isValid());
  6.   assertTrue(offset.getLength() > 0);
  7.   // the offset line intersects the original one, because it's also self intersecting, so we
  8.   // cannot have this test
  9.   // assertEquals(2, offset.distance(geom), EPS);
  10.   Geometry expected =
  11.       geometry(
  12.           "LINESTRING (0 2, 10 2, 10.34729635533386 1.969615506024416, 10.684040286651337 1.8793852415718169, 11 1.7320508075688774, 11.28557521937308 1.532088886237956, 11.532088886237956 1.2855752193730787, 11.732050807568877 1.0000000000000002, 11.879385241571816 0.6840402866513376, 11.969615506024416 0.3472963553338608, 12 0.0000000000000001, 12 -10, 11.969615506024416 -10.34729635533386, 11.879385241571818 -10.684040286651337, 11.732050807568877 -11, 11.532088886237956 -11.28557521937308, 11.28557521937308 -11.532088886237956, 11 -11.732050807568877, 10.684040286651339 -11.879385241571816, 10.34729635533386 -11.969615506024416, 10 -12, 2.9999999999999996 -12, 2.6527036446661394 -11.969615506024416, 2.3159597133486622 -11.879385241571816, 2 -11.732050807568877, 1.714424780626921 -11.532088886237956, 1.467911113762044 -11.28557521937308, 1.2679491924311228 -11, 1.1206147584281831 -10.684040286651337, 1.030384493975584 -10.34729635533386, 1 -10, 1 3)");
  13.   assertTrue(expected.equalsExact(offset, 0.1));
  14. }

代码示例来源：origin: locationtech/jts

  1. private void writeGeomStats(String label,
  2.   Geometry g, StringBuffer buf)
  3. {
  4.  if (g == null) return;
  5.  buf.append(label + " : ");
  6.  buf.append(GeometryUtil.structureSummary(g));
  7.  buf.append("\n");
  8.  buf.append("    Length = " + g.getLength() + "    Area = " + g.getArea() + "\n");
  9.  buf.append("\n");
  10. }

代码示例来源：origin: geotools/geotools

  1. double startOffset = measure - featureFromMeasure;
  2. double calcLength =
  3.     ((Geometry) feature.getDefaultGeometryProperty().getValue()).getLength();
  4. if (calcLength == 0) {
  5.   LOGGER.info("Edge feature has zero length");

代码示例来源：origin: locationtech/jts

  1. public static Geometry sortByLength(Geometry g)
  2. {
  3.  List geoms = components(g);
  4.  Collections.sort(geoms, new GeometryLengthComparator());
  5.  
  6.  // annotate geometries with area
  7.  for (Object o : geoms) {
  8.   Geometry geom = (Geometry) o;
  9.   geom.setUserData(geom.getLength());
  10.  }
  11.  
  12.  return g.getFactory().buildGeometry(geoms);
  13. }

代码示例来源：origin: geotools/geotools

  1. double lineLength =
  2.     ((Geometry) nearestFeature.getDefaultGeometryProperty().getValue())
  3.         .getLength();
  4. Double featureFromMeasure =
  5.     (Double) nearestFeature.getProperty(fromMeasureAttb).getValue();

代码示例来源：origin: locationtech/jts

  1. public void checkLength(String wkt, double expectedValue) throws Exception {
  2.     Geometry g = reader.read(wkt);
  3.     double len = g.getLength();
  4. //        //System.out.println(len);
  5.     assertEquals(expectedValue, len, TOLERANCE);
  6.   }

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