Package org.jungrapht.visualization.util

Class RadiusGraphElementAccessor<V,​E>

  • All Implemented Interfaces:
    GraphElementAccessor<V,​E>, EdgeAccessor<V,​E>, VertexAccessor<V>
    public class RadiusGraphElementAccessor<V,​E>
extends RadiusVertexAccessor<V>
implements GraphElementAccessor<V,​E>
    Simple implementation of GraphElementAccessor that returns the vertex or edge that is closest to the specified location.

    No element will be returned that is farther away than the specified maximum distance.

    Author:
    Tom Nelson, Joshua O'Madadhain

    • Constructor Detail

      • RadiusGraphElementAccessor

        public RadiusGraphElementAccessor()
        Creates an instance with an effectively infinite default maximum distance.

      • RadiusGraphElementAccessor

        public RadiusGraphElementAccessor​(double maxDistance)
        Creates an instance with the specified default maximum distance.
        Parameters:
        maxDistance - the maximum distance at which any element can be from a specified location and still be returned

    • Method Detail

      • getEdge

        public E getEdge​(LayoutModel<V> layoutModel,
                 Point p)
        Gets the edge nearest to the point location selected, whose endpoints are < maxDistance. Iterates through all visible edges and checks their distance from the location. Override this method to provide a more efficient implementation.
        Specified by:
        getEdge in interface EdgeAccessor<V,​E>
        Parameters:
        layoutModel -
        p - the pick location
        Returns:

      • getEdge

        public E getEdge​(LayoutModel<V> layoutModel,
                 double x,
                 double y)
        Gets the edge nearest to the location of the (x,y) location selected, whose endpoints are < maxDistance. Iterates through all visible vertices and checks their distance from the location. Override this method to provide a more efficient implementation.
        Specified by:
        getEdge in interface EdgeAccessor<V,​E>
        Parameters:
        layoutModel - the context in which the location is defined
        x - the x coordinate of the location
        y - the y coordinate of the location
        Returns:
        an edge which is associated with the location (x,y) as given by layoutModel

      • getVertices

        public Set<V> getVertices​(LayoutModel<V> layoutModel,
                          Shape rectangle)
        Specified by:
        getVertices in interface GraphElementAccessor<V,​E>
        rectangle - the region in which the returned vertices are located
        Returns:
        the vertices whose locations given by layoutModel are contained within shape