Package org.apache.lucene.spatial3d.geom

Class GeoStandardCircle

    • Field Detail

      • center

        protected final GeoPoint center
        Center of circle

      • cutoffAngle

        protected final double cutoffAngle
        Cutoff angle of circle (not quite the same thing as radius)

      • circlePlane

        protected final SidedPlane circlePlane
        The plane describing the circle (really an ellipse on a non-spherical world)

      • edgePoints

        protected final GeoPoint[] edgePoints
        A point that is on the world and on the circle plane

      • circlePoints

        protected static final GeoPoint[] circlePoints
        Notable points for a circle -- there aren't any

    • Constructor Detail

      • GeoStandardCircle

        public GeoStandardCircle​(PlanetModel planetModel,
                         double lat,
                         double lon,
                         double cutoffAngle)
        Constructor.
        Parameters:
        planetModel - is the planet model.
        lat - is the center latitude.
        lon - is the center longitude.
        cutoffAngle - is the cutoff angle for the circle.

      • GeoStandardCircle

        public GeoStandardCircle​(PlanetModel planetModel,
                         java.io.InputStream inputStream)
                  throws java.io.IOException
        Constructor for deserialization.
        Parameters:
        planetModel - is the planet model.
        inputStream - is the input stream.
        Throws:
        java.io.IOException

    • Method Detail

      • write

        public void write​(java.io.OutputStream outputStream)
           throws java.io.IOException
        Description copied from interface: SerializableObject
        Serialize to output stream.
        Specified by:
        write in interface SerializableObject
        Overrides:
        write in class BasePlanetObject
        Parameters:
        outputStream - is the output stream to write to.
        Throws:
        java.io.IOException

      • getRadius

        public double getRadius()
        Description copied from interface: GeoSizeable
        Returns the radius of a circle into which the GeoSizeable area can be inscribed.
        Returns:
        the radius.

      • getCenter

        public GeoPoint getCenter()
        Description copied from interface: GeoSizeable
        Returns the center of a circle into which the area will be inscribed.
        Returns:
        the center.

      • isWithin

        public boolean isWithin​(double x,
                        double y,
                        double z)
        Description copied from interface: Membership
        Check if a point is within this shape.
        Parameters:
        x - is x coordinate of point to check.
        y - is y coordinate of point to check.
        z - is z coordinate of point to check.
        Returns:
        true if the point is within this shape

      • getEdgePoints

        public GeoPoint[] getEdgePoints()
        Description copied from interface: GeoShape
        Return a sample point that is on the outside edge/boundary of the shape.
        Returns:
        samples of all edge points from distinct edge sections. Typically one point is returned, but zero or two are also possible.

      • intersects

        public boolean intersects​(Plane p,
                          GeoPoint[] notablePoints,
                          Membership... bounds)
        Description copied from interface: GeoShape
        Assess whether a plane, within the provided bounds, intersects with the shape's edges. Any overlap, even a single point, is considered to be an intersection. Note well that this method is allowed to return "true" if there are internal edges of a composite shape which intersect the plane. Doing this can cause getRelationship() for most GeoBBox shapes to return OVERLAPS rather than the more correct CONTAINS, but that cannot be helped for some complex shapes that are built out of overlapping parts.
        Parameters:
        p - is the plane to assess for intersection with the shape's edges or bounding curves.
        notablePoints - represents the intersections of the plane with the supplied bounds. These are used to disambiguate when two planes are identical and it needs to be determined whether any points exist that fulfill all the bounds.
        bounds - are a set of bounds that define an area that an intersection must be within in order to qualify (provided by a GeoArea).
        Returns:
        true if there's such an intersection, false if not.

      • intersects

        public boolean intersects​(GeoShape geoShape)
        Description copied from interface: GeoAreaShape
        Assess whether a shape intersects with any of the edges of this shape. Note well that this method must return false if the shape contains or is disjoint with the given shape. It is permissible to return true if the shape is within the specified shape, if it is difficult to compute intersection with edges.
        Parameters:
        geoShape - is the shape to assess for intersection with this shape's edges.
        Returns:
        true if there's such an intersection, false if not.

      • getRelationship

        public int getRelationship​(GeoShape geoShape)
        Description copied from interface: GeoArea
        Find the spatial relationship between a shape and the current geo area. Note: return value is how the GeoShape relates to the GeoArea, not the other way around. For example, if this GeoArea is entirely within the shape, then CONTAINS should be returned. If the shape is entirely enclosed by this GeoArea, then WITHIN should be returned.

        It is permissible to return OVERLAPS instead of WITHIN if the shape intersects with the area at even a single point. So, a circle inscribed in a rectangle could return either OVERLAPS or WITHIN, depending on implementation. It is not permissible to return CONTAINS or DISJOINT in this circumstance, however.

        Similarly, it is permissible to return OVERLAPS instead of CONTAINS under conditions where the shape consists of multiple independent overlapping subshapes, and the area overlaps one of the subshapes. It is not permissible to return WITHIN or DISJOINT in this circumstance, however.

        Specified by:
        getRelationship in interface GeoArea
        Overrides:
        getRelationship in class GeoBaseAreaShape
        Parameters:
        geoShape - is the shape to consider.
        Returns:
        the relationship, from the perspective of the shape.

      • getBounds

        public void getBounds​(Bounds bounds)
        Description copied from interface: Bounded
        Compute bounds for the shape.
        Specified by:
        getBounds in interface Bounded
        Overrides:
        getBounds in class GeoBaseShape
        Parameters:
        bounds - is the input bounds object. The input object will be modified.

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object