Class GeoDegeneratePath.SegmentEndpoint

java.lang.Object
org.apache.lucene.spatial3d.geom.GeoDegeneratePath.SegmentEndpoint
Enclosing class:
GeoDegeneratePath

private static class GeoDegeneratePath.SegmentEndpoint extends Object
This is precalculated data for segment endpoint. Since the path is degenerate, there are several different cases:
  1. The path consists of a single endpoint. In this case, the degenerate path consists of this one point.
  2. This is the end of a path. There is a bounding plane passed in which describes the part of the world that is considered to belong to this endpoint.
  3. Intersection. There are two cutoff planes, one for each end of the intersection.
  • Field Details

    • point

      public final GeoPoint point
      The center point of the endpoint
    • cutoffPlanes

      public final Membership[] cutoffPlanes
      Pertinent cutoff planes from adjoining segments
    • NO_MEMBERSHIP

      public static final Membership[] NO_MEMBERSHIP
      Null membership
  • Constructor Details

    • SegmentEndpoint

      public SegmentEndpoint(GeoPoint point)
      Constructor for case (1).
      Parameters:
      point - is the center point.
    • SegmentEndpoint

      public SegmentEndpoint(GeoPoint point, SidedPlane cutoffPlane)
      Constructor for case (2). Generate an endpoint, given a single cutoff plane plus upper and lower edge points.
      Parameters:
      point - is the center point.
      cutoffPlane - is the plane from the adjoining path segment marking the boundary between this endpoint and that segment.
    • SegmentEndpoint

      public SegmentEndpoint(GeoPoint point, SidedPlane cutoffPlane1, SidedPlane cutoffPlane2)
      Constructor for case (3). Generate an endpoint, given two cutoff planes.
      Parameters:
      point - is the center.
      cutoffPlane1 - is one adjoining path segment cutoff plane.
      cutoffPlane2 - is another adjoining path segment cutoff plane.
  • Method Details

    • isWithin

      public boolean isWithin(double x, double y, double z)
      Check if point is within this endpoint.
      Parameters:
      x - is the point x.
      y - is the point y.
      z - is the point z.
      Returns:
      true of within.
    • pathDistance

      public double pathDistance(DistanceStyle distanceStyle, double x, double y, double z)
      Compute interior path distance.
      Parameters:
      distanceStyle - is the distance style.
      x - is the point x.
      y - is the point y.
      z - is the point z.
      Returns:
      the distance metric, in aggregation form.
    • pathCenterDistance

      public double pathCenterDistance(DistanceStyle distanceStyle, double x, double y, double z)
      Compute path center distance.
      Parameters:
      distanceStyle - is the distance style.
      x - is the point x.
      y - is the point y.
      z - is the point z.
      Returns:
      the distance metric, or POSITIVE_INFINITY if the point is not within the bounds of the endpoint.
    • outsideDistance

      public double outsideDistance(DistanceStyle distanceStyle, double x, double y, double z)
      Compute external distance.
      Parameters:
      distanceStyle - is the distance style.
      x - is the point x.
      y - is the point y.
      z - is the point z.
      Returns:
      the distance metric.
    • intersects

      public boolean intersects(PlanetModel planetModel, Plane p, GeoPoint[] notablePoints, Membership[] bounds)
      Determine if this endpoint intersects a specified plane.
      Parameters:
      planetModel - is the planet model.
      p - is the plane.
      notablePoints - are the points associated with the plane.
      bounds - are any bounds which the intersection must lie within.
      Returns:
      true if there is a matching intersection.
    • intersects

      public boolean intersects(GeoShape geoShape)
      Determine if this endpoint intersects a GeoShape.
      Parameters:
      geoShape - is the GeoShape.
      Returns:
      true if there is shape intersect this endpoint.
    • getBounds

      public void getBounds(PlanetModel planetModel, Bounds bounds)
      Get the bounds for a segment endpoint.
      Parameters:
      planetModel - is the planet model.
      bounds - are the bounds to be modified.
    • equals

      public boolean equals(Object o)
      Overrides:
      equals in class Object
    • hashCode

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

      public String toString()
      Overrides:
      toString in class Object