Module org.jgrapht.core
Package org.jgrapht.alg.drawing.model

Class MapLayoutModel2D<V>

  • Type Parameters:
    V - the vertex type
    All Implemented Interfaces:
    Iterable<Map.Entry<V,​Point2D>>, LayoutModel2D<V>
    public class MapLayoutModel2D<V>
extends Object
implements LayoutModel2D<V>
    A layout model which uses a hashtable to store the vertices' locations.
    Author:
    Dimitrios Michail

    • Field Detail

      • drawableArea

        protected Box2D drawableArea

      • fixed

        protected Set<V> fixed

    • Constructor Detail

      • MapLayoutModel2D

        public MapLayoutModel2D​(Box2D drawableArea)
        Create a new model.
        Parameters:
        drawableArea - the drawable area

    • Method Detail

      • getDrawableArea

        public Box2D getDrawableArea()
        Description copied from interface: LayoutModel2D
        Get the drawable area of the model.
        Specified by:
        getDrawableArea in interface LayoutModel2D<V>
        Returns:
        the drawable area of the model

      • setDrawableArea

        public void setDrawableArea​(Box2D drawableArea)
        Description copied from interface: LayoutModel2D
        Set the drawable area of the model.
        Specified by:
        setDrawableArea in interface LayoutModel2D<V>
        Parameters:
        drawableArea - the drawable area to use

      • iterator

        public Iterator<Map.Entry<V,​Point2D>> iterator()
        Description copied from interface: LayoutModel2D
        Get an iterator with all vertices' locations. May return an empty iterator if the model does not store locations.
        Specified by:
        iterator in interface Iterable<V>
        Specified by:
        iterator in interface LayoutModel2D<V>
        Returns:
        an iterator which returns all vertices with their locations. May return an empty iterator if the model does not store locations.

      • get

        public Point2D get​(V vertex)
        Description copied from interface: LayoutModel2D
        Get the last location of a particular vertex in the model. May return null if the vertex has not been assigned a location or if the particular implementation does not store the coordinates.
        Specified by:
        get in interface LayoutModel2D<V>
        Parameters:
        vertex - the graph vertex
        Returns:
        the last location of the vertex

      • put

        public Point2D put​(V vertex,
                   Point2D point)
        Description copied from interface: LayoutModel2D
        Set the location of a vertex.
        Specified by:
        put in interface LayoutModel2D<V>
        Parameters:
        vertex - the graph vertex
        point - the location
        Returns:
        the previous location or null if the vertex did not have a previous location or if the model does not store locations

      • setFixed

        public void setFixed​(V vertex,
                     boolean fixed)
        Description copied from interface: LayoutModel2D
        Set a point as being a "fixed-point" or not. It is the model's responsibility to make sure that changing the coordinates of a fixed point by calling LayoutModel2D.put(Object, Point2D) has no effect.
        Specified by:
        setFixed in interface LayoutModel2D<V>
        Parameters:
        vertex - a vertex
        fixed - whether it is a fixed point or not.

      • isFixed

        public boolean isFixed​(V vertex)
        Description copied from interface: LayoutModel2D
        Check whether a vertex is a fixed point. It is the model's responsibility to make sure that changing the coordinates of a fixed point by calling LayoutModel2D.put(Object, Point2D) has no effect.
        Specified by:
        isFixed in interface LayoutModel2D<V>
        Parameters:
        vertex - the vertex
        Returns:
        true if a fixed point, false otherwise