| Line | Hits | Source |
|---|---|---|
| 1 | /* | |
| 2 | * Copyright (c) 2005, the JUNG Project and the Regents of the University of | |
| 3 | * California All rights reserved. | |
| 4 | * | |
| 5 | * This software is open-source under the BSD license; see either "license.txt" | |
| 6 | * or http://jung.sourceforge.net/license.txt for a description. | |
| 7 | * | |
| 8 | * Created on Aug 23, 2005 | |
| 9 | */ | |
| 10 | package edu.uci.ics.jung.visualization.subLayout; | |
| 11 | ||
| 12 | import java.awt.geom.Point2D; | |
| 13 | import java.util.Collection; | |
| 14 | import java.util.LinkedHashMap; | |
| 15 | import java.util.Map; | |
| 16 | ||
| 17 | import edu.uci.ics.jung.graph.ArchetypeVertex; | |
| 18 | import edu.uci.ics.jung.graph.Vertex; | |
| 19 | ||
| 20 | /** | |
| 21 | * An implementation of SubLayout that places its collection of | |
| 22 | * Vertices in a circle. The center and radius are settable | |
| 23 | * properties. | |
| 24 | * | |
| 25 | * @author Tom Nelson - RABA Technologies | |
| 26 | * | |
| 27 | * | |
| 28 | */ | |
| 29 | public class CircularSubLayout implements SubLayout { | |
| 30 | ||
| 31 | protected double radius; | |
| 32 | protected Point2D center; | |
| 33 | 0 | protected final Map map = new LinkedHashMap(); |
| 34 | ||
| 35 | /** | |
| 36 | * create an instance with passed values | |
| 37 | * @param vertices the collection of vertices to arrange in a circle | |
| 38 | * @param radius the radius of the circle | |
| 39 | * @param center the center of the circle | |
| 40 | */ | |
| 41 | 0 | public CircularSubLayout(Collection vertices, double radius, Point2D center) { |
| 42 | 0 | this.radius = radius; |
| 43 | 0 | this.center = center; |
| 44 | 0 | initializeLocations(vertices); |
| 45 | 0 | } |
| 46 | ||
| 47 | public double getRadius() { | |
| 48 | 0 | return radius; |
| 49 | } | |
| 50 | ||
| 51 | public void setRadius(double radius) { | |
| 52 | 0 | this.radius = radius; |
| 53 | 0 | } |
| 54 | ||
| 55 | /** | |
| 56 | * Map the Vertices in the passed collection to their | |
| 57 | * locations, distributed about the circumference of | |
| 58 | * a circle | |
| 59 | * | |
| 60 | * @param vertices | |
| 61 | */ | |
| 62 | private void initializeLocations(Collection vertices) { | |
| 63 | 0 | Vertex[] vertexArray = |
| 64 | (Vertex[]) vertices.toArray(new Vertex[vertices.size()]); | |
| 65 | ||
| 66 | 0 | if(center == null) { |
| 67 | 0 | center = new Point2D.Double(radius, radius); |
| 68 | } | |
| 69 | // only apply sublayout if there is more than one vertex | |
| 70 | 0 | if (vertexArray.length > 1) { |
| 71 | 0 | for (int i = 0; i < vertexArray.length; i++) { |
| 72 | 0 | double angle = (2 * Math.PI * i) / vertexArray.length; |
| 73 | 0 | Point2D point = new Point2D.Double( |
| 74 | (Math.cos(angle) * radius + center.getX()), (Math | |
| 75 | .sin(angle) | |
| 76 | * radius + center.getY())); | |
| 77 | 0 | map.put(vertexArray[i], point); |
| 78 | } | |
| 79 | } | |
| 80 | 0 | } |
| 81 | ||
| 82 | public Point2D getLocation(ArchetypeVertex v) { | |
| 83 | 0 | return (Point2D)map.get(v); |
| 84 | } | |
| 85 | } |
|
this report was generated by version 1.0.5 of jcoverage. |
copyright © 2003, jcoverage ltd. all rights reserved. |