如何使用geoTools中的GeometricShapeFactory在地图上创建圆

Question

我目前正在使用以下代码创建 GeoJson 多边形。这给我带来了一个无效的坏循环......

在本例中RADIUS = 1609.34 ，即 1 英里（以米为单位）。

        public  GeoJsonPolygon createRadiusPolygon(  Point point,double RADIUS) {       

              GeometricShapeFactory shapeFactory = new GeometricShapeFactory();
              shapeFactory.setNumPoints(32);
              shapeFactory.setCentre(new com.vividsolutions.jts.geom.Coordinate(point.getX(), point.getY()));
              shapeFactory.setSize(RADIUS * 2);
              com.vividsolutions.jts.geom.Geometry circle = shapeFactory.createCircle();
              List<Point> points = new ArrayList<Point>();
                for (com.vividsolutions.jts.geom.Coordinate coordinate : circle.getCoordinates()) {
                    Point lngLatAtl = new Point(coordinate.x, coordinate.y);
                    points.add(lngLatAtl);
                }
                Collections.reverse(points);
                return new GeoJsonPolygon(points);
            }

参考： http ://docs.geotools.org/stable/userguide/library/jts/geometry.html

目前，如果我使用 Point(-73.87,40.84) RADIUS = 1609.34，我会得到以下链接。 https://gist.githubusercontent.com/VanitySoft/56c4ce0f5c1c7e7fe0461ed46fd5ed11/raw/94544750a140d81780ebe9206395a21ab88bb1f7/circle

===已解决== 来自@Ian 的回答：在他的回答中使用方法。RADIUS 以英里为单位，用于获取用于创建 GeoJson 的圆。

...
  com.vividsolutions.jts.geom.Point jtsPoint =  new GeometryFactory().createPoint(new com.vividsolutions.jts.geom.Coordinate(point.getY(), point.getX()));
                  javax.measure.Measure measure = Measure.valueOf(RADIUS, NonSI.MILE);
                  com.vividsolutions.jts.geom.Geometry circle = createCircleRadis(measure,CRS.decode("epsg:4326"),jtsPoint );
...

...

Answer 1

    double latitude = 40.689234d;\n    double longitude = -74.044598d;\n    double diameterInMeters = 2000d; //2km\n\n    GeometricShapeFactory shapeFactory = new GeometricShapeFactory();\n    shapeFactory.setNumPoints(64); // adjustable\n    shapeFactory.setCentre(new Coordinate(latitude, longitude));\n    // Length in meters of 1\xc2\xb0 of latitude = always 111.32 km\n    shapeFactory.setWidth(diameterInMeters/111320d);\n    // Length in meters of 1\xc2\xb0 of longitude = 40075 km * cos( latitude ) / 360\n    shapeFactory.setHeight(diameterInMeters / (40075000 * Math.cos(Math.toRadians(latitude)) / 360));\n\n    Polygon circle = shapeFactory.createEllipse();\n

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