| Line | Hits | Source |
|---|---|---|
| 1 | /* | |
| 2 | * Copyright (c) 2003, the JUNG Project and the Regents of the University | |
| 3 | * of California | |
| 4 | * All rights reserved. | |
| 5 | * | |
| 6 | * This software is open-source under the BSD license; see either | |
| 7 | * "license.txt" or | |
| 8 | * http://jung.sourceforge.net/license.txt for a description. | |
| 9 | */ | |
| 10 | /* | |
| 11 | * Created on Dec 4, 2003 | |
| 12 | */ | |
| 13 | package edu.uci.ics.jung.visualization.contrib; | |
| 14 | ||
| 15 | /** | |
| 16 | * | |
| 17 | * @author danyelf | |
| 18 | */ | |
| 19 | /* | |
| 20 | * This source is under the same license with JUNG. | |
| 21 | * http://jung.sourceforge.net/license.txt for a description. | |
| 22 | */ | |
| 23 | //package edu.uci.ics.jung.visualization; | |
| 24 | //package org.ingrid.nexas.graph; | |
| 25 | ||
| 26 | import java.awt.Dimension; | |
| 27 | import java.util.Arrays; | |
| 28 | import java.util.Collections; | |
| 29 | import java.util.List; | |
| 30 | ||
| 31 | import edu.uci.ics.jung.graph.Graph; | |
| 32 | import edu.uci.ics.jung.graph.Vertex; | |
| 33 | import edu.uci.ics.jung.utils.Pair; | |
| 34 | import edu.uci.ics.jung.utils.UserData; | |
| 35 | import edu.uci.ics.jung.visualization.AbstractLayout; | |
| 36 | import edu.uci.ics.jung.visualization.Coordinates; | |
| 37 | ||
| 38 | /** | |
| 39 | * Positions vertices equally spaced on a regular circle. | |
| 40 | * Does not respect filter calls. | |
| 41 | * | |
| 42 | * @author Masanori Harada | |
| 43 | */ | |
| 44 | public class CircleLayout extends AbstractLayout { | |
| 45 | 0 | private static final Object CIRCLE_KEY = |
| 46 | "jung.Circle_Visualization_Key"; | |
| 47 | private Pair key; | |
| 48 | private double radius; | |
| 49 | ||
| 50 | public CircleLayout(Graph g) { | |
| 51 | 0 | super(g); |
| 52 | 0 | key = new Pair(this, CIRCLE_KEY); |
| 53 | 0 | } |
| 54 | ||
| 55 | public String getStatus() { | |
| 56 | 0 | return "CircleLayout"; |
| 57 | } | |
| 58 | ||
| 59 | /** | |
| 60 | * This one is not incremental. | |
| 61 | */ | |
| 62 | public boolean isIncremental() { | |
| 63 | 0 | return false; |
| 64 | } | |
| 65 | ||
| 66 | /** | |
| 67 | * Returns true; | |
| 68 | */ | |
| 69 | public boolean incrementsAreDone() { | |
| 70 | 0 | return true; |
| 71 | } | |
| 72 | ||
| 73 | public double getRadius() { | |
| 74 | 0 | return radius; |
| 75 | } | |
| 76 | ||
| 77 | public void setRadius(double radius) { | |
| 78 | 0 | this.radius = radius; |
| 79 | 0 | } |
| 80 | ||
| 81 | /** | |
| 82 | * Specifies the order of vertices. The first element of the | |
| 83 | * specified array will be positioned with angle 0 (on the X | |
| 84 | * axis), and the second one will be positioned with angle 1/n, | |
| 85 | * and the third one will be positioned with angle 2/n, and so on. | |
| 86 | * <p> | |
| 87 | * The default implemention shuffles elements randomly. | |
| 88 | */ | |
| 89 | public void orderVertices(Vertex[] vertices) { | |
| 90 | 0 | List list = Arrays.asList(vertices); |
| 91 | 0 | Collections.shuffle(list); |
| 92 | 0 | } |
| 93 | ||
| 94 | /** | |
| 95 | * Returns a visualization-specific key (that is, specific both | |
| 96 | * to this instance and <tt>AbstractLayout</tt>) that can be used | |
| 97 | * to access UserData related to the <tt>AbstractLayout</tt>. | |
| 98 | */ | |
| 99 | public Object getKey() { | |
| 100 | 0 | if (key == null) |
| 101 | 0 | key = new Pair(this, CIRCLE_KEY); |
| 102 | 0 | return key; |
| 103 | } | |
| 104 | ||
| 105 | protected void initialize_local_vertex(Vertex v) { | |
| 106 | 0 | if (v.getUserDatum(getKey()) == null) { |
| 107 | 0 | v.addUserDatum(getKey(), new CircleVertexData(), UserData.REMOVE); |
| 108 | } | |
| 109 | 0 | } |
| 110 | ||
| 111 | 0 | protected void initialize_local() {} |
| 112 | ||
| 113 | protected void initializeLocations() { | |
| 114 | 0 | super.initializeLocations(); |
| 115 | ||
| 116 | 0 | Vertex[] vertices = |
| 117 | (Vertex[]) getVisibleVertices().toArray(new Vertex[0]); | |
| 118 | 0 | orderVertices(vertices); |
| 119 | ||
| 120 | 0 | Dimension d = getCurrentSize(); |
| 121 | 0 | double height = d.getHeight(); |
| 122 | 0 | double width = d.getWidth(); |
| 123 | ||
| 124 | 0 | if (radius <= 0) { |
| 125 | 0 | radius = 0.45 * (height < width ? height : width); |
| 126 | } | |
| 127 | ||
| 128 | 0 | for (int i = 0; i < vertices.length; i++) { |
| 129 | 0 | Coordinates coord = getCoordinates(vertices[i]); |
| 130 | ||
| 131 | 0 | double angle = (2 * Math.PI * i) / vertices.length; |
| 132 | 0 | coord.setX(Math.cos(angle) * radius + width / 2); |
| 133 | 0 | coord.setY(Math.sin(angle) * radius + height / 2); |
| 134 | ||
| 135 | 0 | CircleVertexData data = getCircleData(vertices[i]); |
| 136 | 0 | data.setAngle(angle); |
| 137 | } | |
| 138 | 0 | } |
| 139 | ||
| 140 | public CircleVertexData getCircleData(Vertex v) { | |
| 141 | 0 | return (CircleVertexData) (v.getUserDatum(getKey())); |
| 142 | } | |
| 143 | ||
| 144 | /** | |
| 145 | * Do nothing. | |
| 146 | */ | |
| 147 | public void advancePositions() { | |
| 148 | 0 | } |
| 149 | ||
| 150 | public static class CircleVertexData { | |
| 151 | private double angle; | |
| 152 | ||
| 153 | public double getAngle() { | |
| 154 | return angle; | |
| 155 | } | |
| 156 | ||
| 157 | public void setAngle(double angle) { | |
| 158 | this.angle = angle; | |
| 159 | } | |
| 160 | ||
| 161 | public String toString() { | |
| 162 | return "CircleVertexData: angle=" + angle; | |
| 163 | } | |
| 164 | } | |
| 165 | } |
|
this report was generated by version 1.0.5 of jcoverage. |
copyright © 2003, jcoverage ltd. all rights reserved. |