com.vividsolutions.jts.triangulate

Class VoronoiDiagramBuilder


  • public class VoronoiDiagramBuilder
extends Object
    A utility class which creates Voronoi Diagrams from collections of points. The diagram is returned as a GeometryCollection of Polygons, clipped to the larger of a supplied envelope or to an envelope determined by the input sites.

    • Constructor Detail

      • VoronoiDiagramBuilder

        public VoronoiDiagramBuilder()
        Creates a new Voronoi diagram builder.

    • Method Detail

      • setSites

        public void setSites(Geometry geom)
        Sets the sites (point or vertices) which will be diagrammed. All vertices of the given geometry will be used as sites.
        Parameters:
        geom - the geometry from which the sites will be extracted.

      • setSites

        public void setSites(Collection coords)
        Sets the sites (point or vertices) which will be diagrammed from a collection of Coordinates.
        Parameters:
        coords - a collection of Coordinates.

      • setClipEnvelope

        public void setClipEnvelope(Envelope clipEnv)
        Sets the envelope to clip the diagram to. The diagram will be clipped to the larger of this envelope or an envelope surrounding the sites.
        Parameters:
        clipEnv - the clip envelope.

      • setTolerance

        public void setTolerance(double tolerance)
        Sets the snapping tolerance which will be used to improved the robustness of the triangulation computation. A tolerance of 0.0 specifies that no snapping will take place.
        Parameters:
        tolerance - the tolerance distance to use

      • getDiagram

        public Geometry getDiagram(GeometryFactory geomFact)
        Gets the faces of the computed diagram as a GeometryCollection of Polygons, clipped as specified.
        Parameters:
        geomFact - the geometry factory to use to create the output
        Returns:
        the faces of the diagram