Class Geometry

    • Constructor Detail

      • Geometry

        public Geometry()
    • Method Detail

      • fromJson

        public static Geometry fromJson​(String json)
        Creates a new Geometry from an ArcGIS JSON geometry representation.

        See the ArcGIS REST API help topic on Geometry objects for more information.

        Parameters:
        json - a string containing an ArcGIS JSON representation of a geometry
        Returns:
        a new Geometry constructed from the json string, or null if a geometry couldn't be constructed
        Throws:
        IllegalArgumentException - if json is null or empty
        Since:
        100.0.0
      • fromJson

        public static Geometry fromJson​(String json,
                                        SpatialReference spatialReference)
        Creates a new Geometry from an ArcGIS JSON geometry representation, and the given SpatialReference. Any SpatialReference defined in the JSON representation will be ignored in favor of the spatialReference parameter.

        See the ArcGIS REST API help topic on Geometry objects for more information.

        Parameters:
        json - a string containing an ArcGIS JSON representation of a Geometry
        spatialReference - a SpatialReference to assign to the new Geometry
        Returns:
        a new Geometry constructed from the json string, or null if a geometry couldn't be constructed
        Throws:
        IllegalArgumentException - if json is null or empty
        Since:
        100.0.0
      • getSpatialReference

        public SpatialReference getSpatialReference()
        Gets the SpatialReference of this Geometry. The SpatialReference of a Geometry defines how the coordinates of the Geometry correspond to locations in the real world.
        Returns:
        the SpatialReference of this Geometry
        Since:
        100.0.0
      • getDimension

        public GeometryDimension getDimension()
        Gets the dimension of this Geometry, relating to the number of spatial dimensions in which the geometry may have a size.
        Returns:
        the dimension of this Geometry
        Since:
        100.0.0
      • getExtent

        public Envelope getExtent()
        Gets an Envelope representing the spatial extent of this Geometry, the smallest Envelope that completely contains the Geometry.

        If the Geometry has z-values and m-values, these will be reflected in the properties of the returned Envelope. For an empty Geometry, the extent Envelope will also be empty. For a Point geometry, the extent will have zero width and height.

        Returns:
        the extent of this Geometry
        Since:
        100.0.0
      • getGeometryType

        public GeometryType getGeometryType()
        Gets the type of this Geometry, indicating the subclass, and the type of geometrical shape it can represent.
        Returns:
        the type of this Geometry
        Since:
        100.0.0
      • hasM

        public boolean hasM()
        Indicates if this Geometry has m-values. M-values are often referred to as measures, and are used in linear referencing workflows on linear datasets. NaN is a valid m-value.

        If true, m-values are stored for each vertex of the Geometry. Geometries with m-values are created by using setters or constructors that take an m-value as a parameter.

        Feature classes define whether their geometries have m-values or not. When developing an editing workflow, you must ensure that this value matches that of the feature class in which the Geometry will be stored. The removeZ, removeM, and removeZAndM methods of GeometryEngine can be used to create new geometries without z- and m-value from existing geometries that have the values. See the ArcGIS Desktop help topic Defining feature class properties for more information.

        Returns:
        true if this Geometry has m-values; false otherwise
        Since:
        100.0.0
        See Also:
        hasZ(), GeometryEngine.removeM(Geometry), GeometryEngine.removeZ(Geometry), GeometryEngine.removeZAndM(Geometry)
      • hasZ

        public boolean hasZ()
        Indicates if this Geometry has z-values. Z-values are generally used as a z-coordinate, indicating height or elevation. NaN is a valid z-value.

        If true, z-values are stored for each vertex of the Geometry. Geometries with z-values are created by using setters or constructors that take a z-value as a parameter.

        Feature classes define whether their geometries have z-values or not. When developing an editing workflow, you must ensure that this value matches that of the feature class in which the Geometry will be stored. The removeZ, removeM, and removeZAndM methods of GeometryEngine can be used to create new geometries without z- and m-value from existing geometries that have the values. See the ArcGIS Desktop help topic Defining feature class properties for more information.

        Returns:
        true if this Geometry has z-values; false otherwise
        Since:
        100.0.0
        See Also:
        hasM(), GeometryEngine.removeM(Geometry), GeometryEngine.removeZ(Geometry), GeometryEngine.removeZAndM(Geometry)
      • hasCurves

        public boolean hasCurves()
        Indicates if this Geometry contains Segments that represent true curves.

        The ArcGIS system supports polygon and polyline geometries that contain curved segments in some types of data, for example geodatabases, feature services, and JSON. At the current release this SDK can display curved geometries, but you cannot work with curves using the API; any curved segments in a geometry will be represented as LineSegments, and the curve information will be lost. In editing workflows, use this method to determine if this geometry contains curve information which would be lost if used in an editing workflow.

        Returns:
        true if this Geometry contains curved segments; false otherwise
        Since:
        100.0.0
      • isEmpty

        public boolean isEmpty()
        Indicates if this Geometry is empty. An empty Geometry is a valid object, but has no location in space.

        For an empty Geometry, hasZ() and hasM() return false, and getExtent() returns an empty Envelope.

        Returns:
        true if this Geometry is empty; false otherwise
        Since:
        100.0.0
      • toJson

        public String toJson()
        Returns an ArcGIS JSON geometry representation of this Geometry.

        See the ArcGIS REST API help topic on Geometry objects for more information.

        Specified by:
        toJson in interface JsonSerializable
        Returns:
        a string containing the JSON representation of this geometry
        Since:
        100.0.0
      • getUnknownJson

        public Map<String,​Object> getUnknownJson()
        A Geometry never has any unknown JSON so this returns an empty Map.
        Specified by:
        getUnknownJson in interface JsonSerializable
        Returns:
        an empty unmodifiable Map
        Since:
        100.0.0
      • getUnsupportedJson

        public Map<String,​Object> getUnsupportedJson()
        A Geometry never has any unsupported JSON so this returns an empty Map.
        Specified by:
        getUnsupportedJson in interface JsonSerializable
        Returns:
        an empty unmodifiable Map
        Since:
        100.0.0
      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class Object
      • equals

        public boolean equals​(Object obj)

        This method is more stringent than the GeometryEngine.equals(Geometry, Geometry) method, as in addition to these checks, this method checks that each vertex in a Multipoint or Multipart geometry is in the same order; parts of Multiparts must also begin and end at the same Point.

        Overrides:
        equals in class Object
      • equals

        public boolean equals​(Geometry geometry,
                              double tolerance)
        Checks if a given geometry is equal to this one within a given tolerance.

        This method performs a lightweight comparison of the geometries, such as might be useful when writing test code. It uses the tolerance to compare each of x, y, and any other values the geometries possess (such as z or m) independently in the manner: abs(value1 - value2) <= tolerance.

        Returns true if the difference of each is within the tolerance and all other properties of the geometries are exactly equal (spatial reference, vertex count, etc.). A single tolerance is used even if the units for the horizontal coordinates and other values differ, for example horizontal coordinates in degrees and vertical coordinates in meters.

        This method does not respect modular arithmetic of spatial references which wrap around, so longitudes of -180 and +180 degrees are considered to differ by 360 degrees.

        Parameters:
        geometry - the geometry to check
        tolerance - the tolerance
        Returns:
        true if the geometries are equal, within the tolerance, otherwise false
        Since:
        100.1.0
        See Also:
        equals(Object)