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jshint-fix
| Author | SHA1 | Date | |
|---|---|---|---|
|
7ee84bf6e0 |
30
README.mkdn
30
README.mkdn
|
|
@ -21,9 +21,7 @@ Try to imagine it as a bunch of springs connected to each other.
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Demo
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----
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[basic](http://dhotson.github.com/springy/demo.html)
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| [simplified API](http://dhotson.github.com/springy/demo-simple.html)
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| [JSON API](http://dhotson.github.com/springy/demo-json.html)
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[demo](http://dhotson.github.com/springy/demo.html)
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Getting Started
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@ -45,9 +43,9 @@ See [demo.html](http://dhotson.github.com/springy/demo.html) for the way to
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add nodes and edges to graph and springyui.js for the rendering example.
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Springy 1.1+ supports simplified API for adding nodes and edges, see
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[demo-simple.html](http://dhotson.github.com/springy/demo-simple.html):
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[demo2.html](http://techtonik.github.com/springy/demo2.html):
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var graph = new Springy.Graph();
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var graph = new Graph();
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graph.addNodes('mark', 'higgs', 'other', 'etc');
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graph.addEdges(
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['mark', 'higgs'],
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@ -55,22 +53,6 @@ Springy 1.1+ supports simplified API for adding nodes and edges, see
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['mark', 'other']
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);
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Springy 1.2+ also accepts JSON, see
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[demo-json.html](http://dhotson.github.com/springy/demo-json.html):
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graphJSON = {
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"nodes": ["mark", "higgs", "other", "etc"],
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"edges": [
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["mark", "higgs"],
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["mark", "etc"],
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["mark", "other"]
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]
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};
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var graph = new Springy.Graph();
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graph.loadJSON(graphJSON);
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Advanced Drawing
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----
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@ -80,7 +62,7 @@ things before you get started.
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This is the basic graph API, you can create nodes and edges etc.
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// make a new graph
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var graph = new Springy.Graph();
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var graph = new Graph();
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// make some nodes
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var node1 = graph.newNode({label: '1'});
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@ -91,12 +73,12 @@ This is the basic graph API, you can create nodes and edges etc.
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So now to draw this graph, lets make a layout object:
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var layout = new Springy.Layout.ForceDirected(graph, 400.0, 400.0, 0.5);
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var layout = new Layout.ForceDirected(graph, 400.0, 400.0, 0.5);
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I've written a Renderer class, which will handle the rendering loop.
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You just need to provide some callbacks to do the actual drawing.
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var renderer = new Springy.Renderer(layout,
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var renderer = new Renderer(layout,
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function clear() {
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// code to clear screen
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},
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17
bower.json
17
bower.json
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@ -1,17 +0,0 @@
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{
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"name": "Springy",
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"main": "springy.js",
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"version": "2.7.1",
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"homepage": "https://github.com/dhotson/springy",
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"authors": [
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"Dennis Hotson <dennis@99designs.com>"
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],
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"description": "A force directed graph layout algorithm",
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"keywords": [
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"graph",
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"layout",
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"visualization",
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"physics"
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],
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"license": "MIT"
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}
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@ -1,38 +0,0 @@
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<html>
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<body>
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<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
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<script src="springy.js"></script>
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<script src="springyui.js"></script>
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<script>
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var graphJSON = {
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"nodes": [
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"Amphitryon",
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"Alcmene",
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"Iphicles",
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"Heracles"
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],
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"edges": [
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["Amphitryon", "Alcmene"],
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["Alcmene", "Amphitryon"],
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["Amphitryon", "Iphicles"],
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["Amphitryon", "Heracles"]
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]
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};
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jQuery(function(){
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var graph = new Springy.Graph();
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graph.loadJSON(graphJSON);
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var springy = jQuery('#springydemo').springy({
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graph: graph
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});
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});
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</script>
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<canvas id="springydemo" width="640" height="480" />
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</body>
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</html>
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@ -112,7 +112,7 @@ Raphael.fn.connection = function (obj1, obj2, style) {
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</script>
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<script>
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var graph = new Springy.Graph();
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var graph = new Graph();
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var dennis = graph.newNode({label: 'Dennis'});
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var michael = graph.newNode({label: 'Michael'});
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@ -166,16 +166,16 @@ function moveSet(set, x, y) {
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}
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function doit() {
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var layout = new Springy.Layout.ForceDirected(graph, 640, 480.0, 0.5);
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var layout = new Layout.ForceDirected(graph, 640, 480.0, 0.5);
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var r = Raphael("holder", 640, 480);
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// calculate bounding box of graph layout.. with ease-in
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var currentBB = layout.getBoundingBox();
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var targetBB = {bottomleft: new Springy.Vector(-2, -2), topright: new Springy.Vector(2, 2)};
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var targetBB = {bottomleft: new Vector(-2, -2), topright: new Vector(2, 2)};
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// auto adjusting bounding box
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Springy.requestAnimationFrame(function adjust() {
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Layout.requestAnimationFrame(function adjust() {
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targetBB = layout.getBoundingBox();
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// current gets 20% closer to target every iteration
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currentBB = {
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@ -185,7 +185,7 @@ function doit() {
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.divide(10))
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};
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Springy.requestAnimationFrame(adjust);
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Layout.requestAnimationFrame(adjust);
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});
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// convert to/from screen coordinates
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@ -193,11 +193,11 @@ function doit() {
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var size = currentBB.topright.subtract(currentBB.bottomleft);
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var sx = p.subtract(currentBB.bottomleft).divide(size.x).x * r.width;
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var sy = p.subtract(currentBB.bottomleft).divide(size.y).y * r.height;
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return new Springy.Vector(sx, sy);
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return new Vector(sx, sy);
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};
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var renderer = new Springy.Renderer(layout,
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var renderer = new Renderer(layout,
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function clear() {
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// code to clear screen
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},
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@ -1,33 +0,0 @@
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<html>
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<body>
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<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
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<script src="springy.js"></script>
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<script src="springyui.js"></script>
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<script>
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var graph = new Springy.Graph();
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graph.addNodes('Dennis', 'Michael', 'Jessica', 'Timothy', 'Barbara')
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graph.addNodes('Amphitryon', 'Alcmene', 'Iphicles', 'Heracles');
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graph.addEdges(
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['Dennis', 'Michael', {color: '#00A0B0', label: 'Foo bar'}],
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['Michael', 'Dennis', {color: '#6A4A3C'}],
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['Michael', 'Jessica', {color: '#CC333F'}],
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['Jessica', 'Barbara', {color: '#EB6841'}],
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['Michael', 'Timothy', {color: '#EDC951'}],
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['Amphitryon', 'Alcmene', {color: '#7DBE3C'}],
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['Alcmene', 'Amphitryon', {color: '#BE7D3C'}],
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['Amphitryon', 'Iphicles'],
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['Amphitryon', 'Heracles'],
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['Barbara', 'Timothy', {color: '#6A4A3C'}]
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);
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jQuery(function(){
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var springy = jQuery('#springydemo').springy({
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graph: graph
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});
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});
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</script>
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<canvas id="springydemo" width="640" height="480" />
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</body>
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</html>
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@ -4,12 +4,9 @@
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<script src="springy.js"></script>
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<script src="springyui.js"></script>
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<script>
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var graph = new Springy.Graph();
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var graph = new Graph();
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var dennis = graph.newNode({
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label: 'Dennis',
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ondoubleclick: function() { console.log("Hello!"); }
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});
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var dennis = graph.newNode({label: 'Dennis'});
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var michael = graph.newNode({label: 'Michael'});
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var jessica = graph.newNode({label: 'Jessica'});
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var timothy = graph.newNode({label: 'Timothy'});
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@ -32,7 +29,7 @@ graph.newEdge(dennis, bianca, {color: '#CC333F'});
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graph.newEdge(bianca, monty, {color: '#EB6841'});
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jQuery(function(){
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var springy = window.springy = jQuery('#springydemo').springy({
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var springy = jQuery('#springydemo').springy({
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graph: graph,
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nodeSelected: function(node){
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console.log('Node selected: ' + JSON.stringify(node.data));
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|
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32
demo2.html
Normal file
32
demo2.html
Normal file
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@ -0,0 +1,32 @@
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<html>
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<body>
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<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
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<script src="springy.js"></script>
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<script src="springyui.js"></script>
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<script>
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var graph = new Graph();
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graph.addNodes('Dennis', 'Michael', 'Jessica', 'Timothy', 'Barbara', 'Franklin')
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graph.addNodes('Monty', 'James');
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graph.addEdges(
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['Dennis', 'Michael', {color: '#00A0B0', label: 'Foo bar'}],
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['Michael', 'Dennis', {color: '#6A4A3C'}],
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['Michael', 'Jessica', {color: '#CC333F'}],
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['Jessica', 'Barbara', {color: '#EB6841'}],
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['Michael', 'Timothy', {color: '#EDC951'}],
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['Franklin', 'Monty', {color: '#7DBE3C'}],
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['Dennis', 'Monty', {color: '#000000'}],
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['Monty', 'James'],
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['Barbara', 'Timothy', {color: '#6A4A3C'}]
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);
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jQuery(function(){
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var springy = jQuery('#springydemo').springy({
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graph: graph
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});
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});
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</script>
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<canvas id="springydemo" width="640" height="480" />
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</body>
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</html>
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21
package.json
21
package.json
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@ -1,21 +0,0 @@
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{
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"name": "springy",
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"version": "2.7.1",
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"description": "A force directed graph layout algorithm in JavaScript.",
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"main": "springy.js",
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"scripts": {
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"test": "echo \"Error: no test specified\" && exit 1"
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},
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"repository": {
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"type": "git",
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"url": "git://github.com/dhotson/springy.git"
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},
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"keywords": [
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"graph",
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"layout",
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"visualization"
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],
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"author": "Dennis Hotson <dennis.hotson@gmail.com>",
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"license": "MIT",
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"readmeFilename": "README.mkdn"
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}
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553
springy.js
553
springy.js
|
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@ -1,7 +1,7 @@
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/**
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* Springy v2.7.1
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* Springy v1.1.1
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*
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* Copyright (c) 2010-2013 Dennis Hotson
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* Copyright (c) 2010 Dennis Hotson
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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|
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@ -24,26 +24,13 @@
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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(function (root, factory) {
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if (typeof define === 'function' && define.amd) {
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// AMD. Register as an anonymous module.
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define(function () {
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return (root.returnExportsGlobal = factory());
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});
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} else if (typeof exports === 'object') {
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// Node. Does not work with strict CommonJS, but
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// only CommonJS-like enviroments that support module.exports,
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// like Node.
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module.exports = factory();
|
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} else {
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// Browser globals
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root.Springy = factory();
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}
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}(this, function() {
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var Springy = {};
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/*jshint globalstrict:true, browser:true */
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|
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var Graph = Springy.Graph = function() {
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// Enable strict mode for EC5 compatible browsers
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'use strict';
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var Graph = function() {
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this.nodeSet = {};
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this.nodes = [];
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this.edges = [];
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|
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@ -52,30 +39,30 @@
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this.nextNodeId = 0;
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this.nextEdgeId = 0;
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this.eventListeners = [];
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};
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};
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var Node = Springy.Node = function(id, data) {
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var Node = function(id, data) {
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this.id = id;
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this.data = (data !== undefined) ? data : {};
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// Data fields used by layout algorithm in this file:
|
||||
// this.data.mass
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||||
// Data used by default renderer in springyui.js
|
||||
// this.data.label
|
||||
};
|
||||
// Data fields used by layout algorithm in this file:
|
||||
// this.data.mass
|
||||
// Data used by default renderer in springyui.js
|
||||
// this.data.label
|
||||
};
|
||||
|
||||
var Edge = Springy.Edge = function(id, source, target, data) {
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var Edge = function(id, source, target, data) {
|
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this.id = id;
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this.source = source;
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||||
this.target = target;
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this.data = (data !== undefined) ? data : {};
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||||
|
||||
// Edge data field used by layout alorithm
|
||||
// this.data.length
|
||||
// this.data.type
|
||||
};
|
||||
// Edge data field used by layout alorithm
|
||||
// this.data.length
|
||||
// this.data.type
|
||||
};
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||||
|
||||
Graph.prototype.addNode = function(node) {
|
||||
Graph.prototype.addNode = function(node) {
|
||||
if (!(node.id in this.nodeSet)) {
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||||
this.nodes.push(node);
|
||||
}
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||||
|
|
@ -84,19 +71,19 @@
|
|||
|
||||
this.notify();
|
||||
return node;
|
||||
};
|
||||
};
|
||||
|
||||
Graph.prototype.addNodes = function() {
|
||||
Graph.prototype.addNodes = function() {
|
||||
// accepts variable number of arguments, where each argument
|
||||
// is a string that becomes both node identifier and label
|
||||
for (var i = 0; i < arguments.length; i++) {
|
||||
var name = arguments[i];
|
||||
var node = new Node(name, {label:name});
|
||||
var node = new Node(name, {label: name});
|
||||
this.addNode(node);
|
||||
}
|
||||
};
|
||||
};
|
||||
|
||||
Graph.prototype.addEdge = function(edge) {
|
||||
Graph.prototype.addEdge = function(edge) {
|
||||
var exists = false;
|
||||
this.edges.forEach(function(e) {
|
||||
if (edge.id === e.id) { exists = true; }
|
||||
|
|
@ -124,88 +111,50 @@
|
|||
|
||||
this.notify();
|
||||
return edge;
|
||||
};
|
||||
};
|
||||
|
||||
Graph.prototype.addEdges = function() {
|
||||
Graph.prototype.addEdges = function() {
|
||||
// accepts variable number of arguments, where each argument
|
||||
// is a triple [nodeid1, nodeid2, attributes]
|
||||
for (var i = 0; i < arguments.length; i++) {
|
||||
var e = arguments[i];
|
||||
var node1 = this.nodeSet[e[0]];
|
||||
if (node1 == undefined) {
|
||||
throw new TypeError("invalid node name: " + e[0]);
|
||||
if (node1 === undefined) {
|
||||
throw new TypeError('invalid node name: ' + e[0]);
|
||||
}
|
||||
var node2 = this.nodeSet[e[1]];
|
||||
if (node2 == undefined) {
|
||||
throw new TypeError("invalid node name: " + e[1]);
|
||||
if (node2 === undefined) {
|
||||
throw new TypeError('invalid node name: ' + e[1]);
|
||||
}
|
||||
var attr = e[2];
|
||||
|
||||
this.newEdge(node1, node2, attr);
|
||||
}
|
||||
};
|
||||
};
|
||||
|
||||
Graph.prototype.newNode = function(data) {
|
||||
Graph.prototype.newNode = function(data) {
|
||||
var node = new Node(this.nextNodeId++, data);
|
||||
this.addNode(node);
|
||||
return node;
|
||||
};
|
||||
};
|
||||
|
||||
Graph.prototype.newEdge = function(source, target, data) {
|
||||
Graph.prototype.newEdge = function(source, target, data) {
|
||||
var edge = new Edge(this.nextEdgeId++, source, target, data);
|
||||
this.addEdge(edge);
|
||||
return edge;
|
||||
};
|
||||
};
|
||||
|
||||
|
||||
// add nodes and edges from JSON object
|
||||
Graph.prototype.loadJSON = function(json) {
|
||||
/**
|
||||
Springy's simple JSON format for graphs.
|
||||
|
||||
historically, Springy uses separate lists
|
||||
of nodes and edges:
|
||||
|
||||
{
|
||||
"nodes": [
|
||||
"center",
|
||||
"left",
|
||||
"right",
|
||||
"up",
|
||||
"satellite"
|
||||
],
|
||||
"edges": [
|
||||
["center", "left"],
|
||||
["center", "right"],
|
||||
["center", "up"]
|
||||
]
|
||||
}
|
||||
|
||||
**/
|
||||
// parse if a string is passed (EC5+ browsers)
|
||||
if (typeof json == 'string' || json instanceof String) {
|
||||
json = JSON.parse( json );
|
||||
}
|
||||
|
||||
if ('nodes' in json || 'edges' in json) {
|
||||
this.addNodes.apply(this, json['nodes']);
|
||||
this.addEdges.apply(this, json['edges']);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// find the edges from node1 to node2
|
||||
Graph.prototype.getEdges = function(node1, node2) {
|
||||
if (node1.id in this.adjacency
|
||||
&& node2.id in this.adjacency[node1.id]) {
|
||||
// find the edges from node1 to node2
|
||||
Graph.prototype.getEdges = function(node1, node2) {
|
||||
if (node1.id in this.adjacency && node2.id in this.adjacency[node1.id]) {
|
||||
return this.adjacency[node1.id][node2.id];
|
||||
}
|
||||
|
||||
return [];
|
||||
};
|
||||
};
|
||||
|
||||
// remove a node and it's associated edges from the graph
|
||||
Graph.prototype.removeNode = function(node) {
|
||||
// remove a node and it's associated edges from the graph
|
||||
Graph.prototype.removeNode = function(node) {
|
||||
if (node.id in this.nodeSet) {
|
||||
delete this.nodeSet[node.id];
|
||||
}
|
||||
|
|
@ -217,10 +166,11 @@
|
|||
}
|
||||
|
||||
this.detachNode(node);
|
||||
};
|
||||
|
||||
// removes edges associated with a given node
|
||||
Graph.prototype.detachNode = function(node) {
|
||||
};
|
||||
|
||||
// removes edges associated with a given node
|
||||
Graph.prototype.detachNode = function(node) {
|
||||
var tmpEdges = this.edges.slice();
|
||||
tmpEdges.forEach(function(e) {
|
||||
if (e.source.id === node.id || e.target.id === node.id) {
|
||||
|
|
@ -229,10 +179,10 @@
|
|||
}, this);
|
||||
|
||||
this.notify();
|
||||
};
|
||||
};
|
||||
|
||||
// remove a node and it's associated edges from the graph
|
||||
Graph.prototype.removeEdge = function(edge) {
|
||||
// remove a node and it's associated edges from the graph
|
||||
Graph.prototype.removeEdge = function(edge) {
|
||||
for (var i = this.edges.length - 1; i >= 0; i--) {
|
||||
if (this.edges[i].id === edge.id) {
|
||||
this.edges.splice(i, 1);
|
||||
|
|
@ -243,29 +193,19 @@
|
|||
for (var y in this.adjacency[x]) {
|
||||
var edges = this.adjacency[x][y];
|
||||
|
||||
for (var j=edges.length - 1; j>=0; j--) {
|
||||
for (var j = edges.length - 1; j >= 0; j--) {
|
||||
if (this.adjacency[x][y][j].id === edge.id) {
|
||||
this.adjacency[x][y].splice(j, 1);
|
||||
}
|
||||
}
|
||||
|
||||
// Clean up empty edge arrays
|
||||
if (this.adjacency[x][y].length == 0) {
|
||||
delete this.adjacency[x][y];
|
||||
}
|
||||
}
|
||||
|
||||
// Clean up empty objects
|
||||
if (isEmpty(this.adjacency[x])) {
|
||||
delete this.adjacency[x];
|
||||
}
|
||||
}
|
||||
|
||||
this.notify();
|
||||
};
|
||||
};
|
||||
|
||||
/* Merge a list of nodes and edges into the current graph. eg.
|
||||
var o = {
|
||||
/* Merge a list of nodes and edges into the current graph. eg.
|
||||
var o = {
|
||||
nodes: [
|
||||
{id: 123, data: {type: 'user', userid: 123, displayname: 'aaa'}},
|
||||
{id: 234, data: {type: 'user', userid: 234, displayname: 'bbb'}}
|
||||
|
|
@ -273,9 +213,9 @@
|
|||
edges: [
|
||||
{from: 0, to: 1, type: 'submitted_design', directed: true, data: {weight: }}
|
||||
]
|
||||
}
|
||||
*/
|
||||
Graph.prototype.merge = function(data) {
|
||||
}
|
||||
*/
|
||||
Graph.prototype.merge = function(data) {
|
||||
var nodes = [];
|
||||
data.nodes.forEach(function(n) {
|
||||
nodes.push(this.addNode(new Node(n.id, n.data)));
|
||||
|
|
@ -285,70 +225,69 @@
|
|||
var from = nodes[e.from];
|
||||
var to = nodes[e.to];
|
||||
|
||||
var id = (e.directed)
|
||||
? (id = e.type + "-" + from.id + "-" + to.id)
|
||||
: (from.id < to.id) // normalise id for non-directed edges
|
||||
? e.type + "-" + from.id + "-" + to.id
|
||||
: e.type + "-" + to.id + "-" + from.id;
|
||||
var id = (e.directed) ?
|
||||
(id = e.type + '-' + from.id + '-' + to.id) :
|
||||
(from.id < to.id) ? // normalise id for non-directed edges
|
||||
(e.type + '-' + from.id + '-' + to.id) :
|
||||
(e.type + '-' + to.id + '-' + from.id);
|
||||
|
||||
var edge = this.addEdge(new Edge(id, from, to, e.data));
|
||||
edge.data.type = e.type;
|
||||
}, this);
|
||||
};
|
||||
};
|
||||
|
||||
Graph.prototype.filterNodes = function(fn) {
|
||||
Graph.prototype.filterNodes = function(fn) {
|
||||
var tmpNodes = this.nodes.slice();
|
||||
tmpNodes.forEach(function(n) {
|
||||
if (!fn(n)) {
|
||||
this.removeNode(n);
|
||||
}
|
||||
}, this);
|
||||
};
|
||||
};
|
||||
|
||||
Graph.prototype.filterEdges = function(fn) {
|
||||
Graph.prototype.filterEdges = function(fn) {
|
||||
var tmpEdges = this.edges.slice();
|
||||
tmpEdges.forEach(function(e) {
|
||||
if (!fn(e)) {
|
||||
this.removeEdge(e);
|
||||
}
|
||||
}, this);
|
||||
};
|
||||
};
|
||||
|
||||
|
||||
Graph.prototype.addGraphListener = function(obj) {
|
||||
Graph.prototype.addGraphListener = function(obj) {
|
||||
this.eventListeners.push(obj);
|
||||
};
|
||||
};
|
||||
|
||||
Graph.prototype.notify = function() {
|
||||
this.eventListeners.forEach(function(obj){
|
||||
Graph.prototype.notify = function() {
|
||||
this.eventListeners.forEach(function(obj) {
|
||||
obj.graphChanged();
|
||||
});
|
||||
};
|
||||
};
|
||||
|
||||
// -----------
|
||||
var Layout = Springy.Layout = {};
|
||||
Layout.ForceDirected = function(graph, stiffness, repulsion, damping, minEnergyThreshold, maxSpeed) {
|
||||
// -----------
|
||||
var Layout = {};
|
||||
Layout.ForceDirected = function(graph, stiffness, repulsion, damping) {
|
||||
this.graph = graph;
|
||||
this.stiffness = stiffness; // spring stiffness constant
|
||||
this.repulsion = repulsion; // repulsion constant
|
||||
this.damping = damping; // velocity damping factor
|
||||
this.minEnergyThreshold = minEnergyThreshold || 0.01; //threshold used to determine render stop
|
||||
this.maxSpeed = maxSpeed || Infinity; // nodes aren't allowed to exceed this speed
|
||||
|
||||
this.nodePoints = {}; // keep track of points associated with nodes
|
||||
this.edgeSprings = {}; // keep track of springs associated with edges
|
||||
};
|
||||
};
|
||||
|
||||
Layout.ForceDirected.prototype.point = function(node) {
|
||||
Layout.ForceDirected.prototype.point = function(node) {
|
||||
if (!(node.id in this.nodePoints)) {
|
||||
var mass = (node.data.mass !== undefined) ? node.data.mass : 1.0;
|
||||
this.nodePoints[node.id] = new Layout.ForceDirected.Point(Vector.random(), mass);
|
||||
this.nodePoints[node.id] =
|
||||
new Layout.ForceDirected.Point(Vector.random(), mass);
|
||||
}
|
||||
|
||||
return this.nodePoints[node.id];
|
||||
};
|
||||
};
|
||||
|
||||
Layout.ForceDirected.prototype.spring = function(edge) {
|
||||
Layout.ForceDirected.prototype.spring = function(edge) {
|
||||
if (!(edge.id in this.edgeSprings)) {
|
||||
var length = (edge.data.length !== undefined) ? edge.data.length : 1.0;
|
||||
|
||||
|
|
@ -362,18 +301,22 @@
|
|||
}, this);
|
||||
|
||||
if (existingSpring !== false) {
|
||||
return new Layout.ForceDirected.Spring(existingSpring.point1, existingSpring.point2, 0.0, 0.0);
|
||||
return new Layout.ForceDirected.Spring(
|
||||
existingSpring.point1,
|
||||
existingSpring.point2, 0.0, 0.0);
|
||||
}
|
||||
|
||||
var to = this.graph.getEdges(edge.target, edge.source);
|
||||
from.forEach(function(e){
|
||||
from.forEach(function(e) {
|
||||
if (existingSpring === false && e.id in this.edgeSprings) {
|
||||
existingSpring = this.edgeSprings[e.id];
|
||||
}
|
||||
}, this);
|
||||
|
||||
if (existingSpring !== false) {
|
||||
return new Layout.ForceDirected.Spring(existingSpring.point2, existingSpring.point1, 0.0, 0.0);
|
||||
return new Layout.ForceDirected.Spring(
|
||||
existingSpring.point2,
|
||||
existingSpring.point1, 0.0, 0.0);
|
||||
}
|
||||
|
||||
this.edgeSprings[edge.id] = new Layout.ForceDirected.Spring(
|
||||
|
|
@ -382,93 +325,99 @@
|
|||
}
|
||||
|
||||
return this.edgeSprings[edge.id];
|
||||
};
|
||||
};
|
||||
|
||||
// callback should accept two arguments: Node, Point
|
||||
Layout.ForceDirected.prototype.eachNode = function(callback) {
|
||||
// callback should accept two arguments: Node, Point
|
||||
Layout.ForceDirected.prototype.eachNode = function(callback) {
|
||||
var t = this;
|
||||
this.graph.nodes.forEach(function(n){
|
||||
this.graph.nodes.forEach(function(n) {
|
||||
callback.call(t, n, t.point(n));
|
||||
});
|
||||
};
|
||||
};
|
||||
|
||||
// callback should accept two arguments: Edge, Spring
|
||||
Layout.ForceDirected.prototype.eachEdge = function(callback) {
|
||||
// callback should accept two arguments: Edge, Spring
|
||||
Layout.ForceDirected.prototype.eachEdge = function(callback) {
|
||||
var t = this;
|
||||
this.graph.edges.forEach(function(e){
|
||||
this.graph.edges.forEach(function(e) {
|
||||
callback.call(t, e, t.spring(e));
|
||||
});
|
||||
};
|
||||
};
|
||||
|
||||
// callback should accept one argument: Spring
|
||||
Layout.ForceDirected.prototype.eachSpring = function(callback) {
|
||||
// callback should accept one argument: Spring
|
||||
Layout.ForceDirected.prototype.eachSpring = function(callback) {
|
||||
var t = this;
|
||||
this.graph.edges.forEach(function(e){
|
||||
this.graph.edges.forEach(function(e) {
|
||||
callback.call(t, t.spring(e));
|
||||
});
|
||||
};
|
||||
};
|
||||
|
||||
|
||||
// Physics stuff
|
||||
Layout.ForceDirected.prototype.applyCoulombsLaw = function() {
|
||||
// Physics stuff
|
||||
Layout.ForceDirected.prototype.applyCoulombsLaw = function() {
|
||||
this.eachNode(function(n1, point1) {
|
||||
this.eachNode(function(n2, point2) {
|
||||
if (point1 !== point2)
|
||||
{
|
||||
var d = point1.p.subtract(point2.p);
|
||||
var distance = d.magnitude() + 0.1; // avoid massive forces at small distances (and divide by zero)
|
||||
// avoid massive forces at small distances (and divide by zero)
|
||||
var distance = d.magnitude() + 0.1;
|
||||
var direction = d.normalise();
|
||||
|
||||
// apply force to each end point
|
||||
point1.applyForce(direction.multiply(this.repulsion).divide(distance * distance * 0.5));
|
||||
point2.applyForce(direction.multiply(this.repulsion).divide(distance * distance * -0.5));
|
||||
point1.applyForce(
|
||||
direction
|
||||
.multiply(this.repulsion)
|
||||
.divide(distance * distance * 0.5));
|
||||
|
||||
point2.applyForce(
|
||||
direction
|
||||
.multiply(this.repulsion)
|
||||
.divide(distance * distance * -0.5));
|
||||
}
|
||||
});
|
||||
});
|
||||
};
|
||||
};
|
||||
|
||||
Layout.ForceDirected.prototype.applyHookesLaw = function() {
|
||||
this.eachSpring(function(spring){
|
||||
var d = spring.point2.p.subtract(spring.point1.p); // the direction of the spring
|
||||
var displacement = spring.length - d.magnitude();
|
||||
var direction = d.normalise();
|
||||
Layout.ForceDirected.prototype.applyHookesLaw = function() {
|
||||
this.eachSpring(function(spring) {
|
||||
var dir = spring.point2.p.subtract(spring.point1.p);
|
||||
var displacement = spring.length - dir.magnitude();
|
||||
var direction = dir.normalise();
|
||||
|
||||
// apply force to each end point
|
||||
spring.point1.applyForce(direction.multiply(spring.k * displacement * -0.5));
|
||||
spring.point2.applyForce(direction.multiply(spring.k * displacement * 0.5));
|
||||
});
|
||||
};
|
||||
spring.point1.applyForce(
|
||||
direction
|
||||
.multiply(spring.k * displacement * -0.5));
|
||||
|
||||
Layout.ForceDirected.prototype.attractToCentre = function() {
|
||||
spring.point2.applyForce(
|
||||
direction
|
||||
.multiply(spring.k * displacement * 0.5));
|
||||
});
|
||||
};
|
||||
|
||||
Layout.ForceDirected.prototype.attractToCentre = function() {
|
||||
this.eachNode(function(node, point) {
|
||||
var direction = point.p.multiply(-1.0);
|
||||
point.applyForce(direction.multiply(this.repulsion / 50.0));
|
||||
});
|
||||
};
|
||||
};
|
||||
|
||||
|
||||
Layout.ForceDirected.prototype.updateVelocity = function(timestep) {
|
||||
Layout.ForceDirected.prototype.updateVelocity = function(timestep) {
|
||||
this.eachNode(function(node, point) {
|
||||
// Is this, along with updatePosition below, the only places that your
|
||||
// integration code exist?
|
||||
point.v = point.v.add(point.a.multiply(timestep)).multiply(this.damping);
|
||||
if (point.v.magnitude() > this.maxSpeed) {
|
||||
point.v = point.v.normalise().multiply(this.maxSpeed);
|
||||
}
|
||||
point.a = new Vector(0,0);
|
||||
point.a = new Vector(0, 0);
|
||||
});
|
||||
};
|
||||
};
|
||||
|
||||
Layout.ForceDirected.prototype.updatePosition = function(timestep) {
|
||||
Layout.ForceDirected.prototype.updatePosition = function(timestep) {
|
||||
this.eachNode(function(node, point) {
|
||||
// Same question as above; along with updateVelocity, is this all of
|
||||
// your integration code?
|
||||
point.p = point.p.add(point.v.multiply(timestep));
|
||||
});
|
||||
};
|
||||
};
|
||||
|
||||
// Calculate the total kinetic energy of the system
|
||||
Layout.ForceDirected.prototype.totalEnergy = function(timestep) {
|
||||
// Calculate the total kinetic energy of the system
|
||||
Layout.ForceDirected.prototype.totalEnergy = function(timestep) {
|
||||
var energy = 0.0;
|
||||
this.eachNode(function(node, point) {
|
||||
var speed = point.v.magnitude();
|
||||
|
|
@ -476,67 +425,56 @@
|
|||
});
|
||||
|
||||
return energy;
|
||||
};
|
||||
};
|
||||
|
||||
var __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; }; // stolen from coffeescript, thanks jashkenas! ;-)
|
||||
// stolen from coffeescript, thanks jashkenas! ;-)
|
||||
var __bind = function(fn, me) { return function() {
|
||||
return fn.apply(me, arguments);
|
||||
}; };
|
||||
|
||||
Springy.requestAnimationFrame = __bind(this.requestAnimationFrame ||
|
||||
this.webkitRequestAnimationFrame ||
|
||||
this.mozRequestAnimationFrame ||
|
||||
this.oRequestAnimationFrame ||
|
||||
this.msRequestAnimationFrame ||
|
||||
Layout.requestAnimationFrame = __bind(window.requestAnimationFrame ||
|
||||
window.webkitRequestAnimationFrame ||
|
||||
window.mozRequestAnimationFrame ||
|
||||
window.oRequestAnimationFrame ||
|
||||
window.msRequestAnimationFrame ||
|
||||
(function(callback, element) {
|
||||
this.setTimeout(callback, 10);
|
||||
}), this);
|
||||
window.setTimeout(callback, 10);
|
||||
}), window);
|
||||
|
||||
|
||||
/**
|
||||
* Start simulation if it's not running already.
|
||||
* In case it's running then the call is ignored, and none of the callbacks passed is ever executed.
|
||||
*/
|
||||
Layout.ForceDirected.prototype.start = function(render, onRenderStop, onRenderStart) {
|
||||
// start simulation
|
||||
Layout.ForceDirected.prototype.start = function(render, done) {
|
||||
var t = this;
|
||||
|
||||
if (this._started) return;
|
||||
this._started = true;
|
||||
this._stop = false;
|
||||
|
||||
if (onRenderStart !== undefined) { onRenderStart(); }
|
||||
|
||||
Springy.requestAnimationFrame(function step() {
|
||||
t.tick(0.03);
|
||||
Layout.requestAnimationFrame(function step() {
|
||||
t.applyCoulombsLaw();
|
||||
t.applyHookesLaw();
|
||||
t.attractToCentre();
|
||||
t.updateVelocity(0.03);
|
||||
t.updatePosition(0.03);
|
||||
|
||||
if (render !== undefined) {
|
||||
render();
|
||||
}
|
||||
|
||||
// stop simulation when energy of the system goes below a threshold
|
||||
if (t._stop || t.totalEnergy() < t.minEnergyThreshold) {
|
||||
if (t.totalEnergy() < 0.01) {
|
||||
t._started = false;
|
||||
if (onRenderStop !== undefined) { onRenderStop(); }
|
||||
if (done !== undefined) { done(); }
|
||||
} else {
|
||||
Springy.requestAnimationFrame(step);
|
||||
Layout.requestAnimationFrame(step);
|
||||
}
|
||||
});
|
||||
};
|
||||
};
|
||||
|
||||
Layout.ForceDirected.prototype.stop = function() {
|
||||
this._stop = true;
|
||||
}
|
||||
|
||||
Layout.ForceDirected.prototype.tick = function(timestep) {
|
||||
this.applyCoulombsLaw();
|
||||
this.applyHookesLaw();
|
||||
this.attractToCentre();
|
||||
this.updateVelocity(timestep);
|
||||
this.updatePosition(timestep);
|
||||
};
|
||||
|
||||
// Find the nearest point to a particular position
|
||||
Layout.ForceDirected.prototype.nearest = function(pos) {
|
||||
// Find the nearest point to a particular position
|
||||
Layout.ForceDirected.prototype.nearest = function(pos) {
|
||||
var min = {node: null, point: null, distance: null};
|
||||
var t = this;
|
||||
this.graph.nodes.forEach(function(n){
|
||||
this.graph.nodes.forEach(function(n) {
|
||||
var point = t.point(n);
|
||||
var distance = point.p.subtract(pos).magnitude();
|
||||
|
||||
|
|
@ -546,12 +484,12 @@
|
|||
});
|
||||
|
||||
return min;
|
||||
};
|
||||
};
|
||||
|
||||
// returns [bottomleft, topright]
|
||||
Layout.ForceDirected.prototype.getBoundingBox = function() {
|
||||
var bottomleft = new Vector(-2,-2);
|
||||
var topright = new Vector(2,2);
|
||||
// returns [bottomleft, topright]
|
||||
Layout.ForceDirected.prototype.getBoundingBox = function() {
|
||||
var bottomleft = new Vector(-2, -2);
|
||||
var topright = new Vector(2, 2);
|
||||
|
||||
this.eachNode(function(n, point) {
|
||||
if (point.p.x < bottomleft.x) {
|
||||
|
|
@ -570,110 +508,88 @@
|
|||
|
||||
var padding = topright.subtract(bottomleft).multiply(0.07); // ~5% padding
|
||||
|
||||
return {bottomleft: bottomleft.subtract(padding), topright: topright.add(padding)};
|
||||
return {
|
||||
bottomleft: bottomleft.subtract(padding),
|
||||
topright: topright.add(padding)
|
||||
};
|
||||
};
|
||||
|
||||
|
||||
// Vector
|
||||
var Vector = Springy.Vector = function(x, y) {
|
||||
// Vector
|
||||
var Vector = function(x, y) {
|
||||
this.x = x;
|
||||
this.y = y;
|
||||
};
|
||||
};
|
||||
|
||||
Vector.random = function() {
|
||||
Vector.random = function() {
|
||||
return new Vector(10.0 * (Math.random() - 0.5), 10.0 * (Math.random() - 0.5));
|
||||
};
|
||||
};
|
||||
|
||||
Vector.prototype.add = function(v2) {
|
||||
Vector.prototype.add = function(v2) {
|
||||
return new Vector(this.x + v2.x, this.y + v2.y);
|
||||
};
|
||||
};
|
||||
|
||||
Vector.prototype.subtract = function(v2) {
|
||||
Vector.prototype.subtract = function(v2) {
|
||||
return new Vector(this.x - v2.x, this.y - v2.y);
|
||||
};
|
||||
};
|
||||
|
||||
Vector.prototype.multiply = function(n) {
|
||||
Vector.prototype.multiply = function(n) {
|
||||
return new Vector(this.x * n, this.y * n);
|
||||
};
|
||||
};
|
||||
|
||||
Vector.prototype.divide = function(n) {
|
||||
return new Vector((this.x / n) || 0, (this.y / n) || 0); // Avoid divide by zero errors..
|
||||
};
|
||||
Vector.prototype.divide = function(n) {
|
||||
return new Vector(
|
||||
(this.x / n) || 0,
|
||||
(this.y / n) || 0); // Avoid divide by zero errors..
|
||||
};
|
||||
|
||||
Vector.prototype.magnitude = function() {
|
||||
return Math.sqrt(this.x*this.x + this.y*this.y);
|
||||
};
|
||||
Vector.prototype.magnitude = function() {
|
||||
return Math.sqrt(this.x * this.x + this.y * this.y);
|
||||
};
|
||||
|
||||
Vector.prototype.normal = function() {
|
||||
Vector.prototype.normal = function() {
|
||||
return new Vector(-this.y, this.x);
|
||||
};
|
||||
};
|
||||
|
||||
Vector.prototype.normalise = function() {
|
||||
Vector.prototype.normalise = function() {
|
||||
return this.divide(this.magnitude());
|
||||
};
|
||||
};
|
||||
|
||||
// Point
|
||||
Layout.ForceDirected.Point = function(position, mass) {
|
||||
// Point
|
||||
Layout.ForceDirected.Point = function(position, mass) {
|
||||
this.p = position; // position
|
||||
this.m = mass; // mass
|
||||
this.v = new Vector(0, 0); // velocity
|
||||
this.a = new Vector(0, 0); // acceleration
|
||||
};
|
||||
};
|
||||
|
||||
Layout.ForceDirected.Point.prototype.applyForce = function(force) {
|
||||
Layout.ForceDirected.Point.prototype.applyForce = function(force) {
|
||||
this.a = this.a.add(force.divide(this.m));
|
||||
};
|
||||
};
|
||||
|
||||
// Spring
|
||||
Layout.ForceDirected.Spring = function(point1, point2, length, k) {
|
||||
// Spring
|
||||
Layout.ForceDirected.Spring = function(point1, point2, length, k) {
|
||||
this.point1 = point1;
|
||||
this.point2 = point2;
|
||||
this.length = length; // spring length at rest
|
||||
this.k = k; // spring constant (See Hooke's law) .. how stiff the spring is
|
||||
};
|
||||
};
|
||||
|
||||
// Layout.ForceDirected.Spring.prototype.distanceToPoint = function(point)
|
||||
// {
|
||||
// // hardcore vector arithmetic.. ohh yeah!
|
||||
// // .. see http://stackoverflow.com/questions/849211/shortest-distance-between-a-point-and-a-line-segment/865080#865080
|
||||
// var n = this.point2.p.subtract(this.point1.p).normalise().normal();
|
||||
// var ac = point.p.subtract(this.point1.p);
|
||||
// return Math.abs(ac.x * n.x + ac.y * n.y);
|
||||
// };
|
||||
|
||||
/**
|
||||
* Renderer handles the layout rendering loop
|
||||
* @param onRenderStop optional callback function that gets executed whenever rendering stops.
|
||||
* @param onRenderStart optional callback function that gets executed whenever rendering starts.
|
||||
* @param onRenderFrame optional callback function that gets executed after each frame is rendered.
|
||||
*/
|
||||
var Renderer = Springy.Renderer = function(layout, clear, drawEdge, drawNode, onRenderStop, onRenderStart, onRenderFrame) {
|
||||
// Renderer handles the layout rendering loop
|
||||
function Renderer(layout, clear, drawEdge, drawNode) {
|
||||
this.layout = layout;
|
||||
this.clear = clear;
|
||||
this.drawEdge = drawEdge;
|
||||
this.drawNode = drawNode;
|
||||
this.onRenderStop = onRenderStop;
|
||||
this.onRenderStart = onRenderStart;
|
||||
this.onRenderFrame = onRenderFrame;
|
||||
|
||||
this.layout.graph.addGraphListener(this);
|
||||
}
|
||||
}
|
||||
|
||||
Renderer.prototype.graphChanged = function(e) {
|
||||
Renderer.prototype.graphChanged = function(e) {
|
||||
this.start();
|
||||
};
|
||||
};
|
||||
|
||||
/**
|
||||
* Starts the simulation of the layout in use.
|
||||
*
|
||||
* Note that in case the algorithm is still or already running then the layout that's in use
|
||||
* might silently ignore the call, and your optional <code>done</code> callback is never executed.
|
||||
* At least the built-in ForceDirected layout behaves in this way.
|
||||
*
|
||||
* @param done An optional callback function that gets executed when the springy algorithm stops,
|
||||
* either because it ended or because stop() was called.
|
||||
*/
|
||||
Renderer.prototype.start = function(done) {
|
||||
Renderer.prototype.start = function() {
|
||||
var t = this;
|
||||
this.layout.start(function render() {
|
||||
t.clear();
|
||||
|
|
@ -685,51 +601,34 @@
|
|||
t.layout.eachNode(function(node, point) {
|
||||
t.drawNode(node, point.p);
|
||||
});
|
||||
});
|
||||
};
|
||||
|
||||
if (t.onRenderFrame !== undefined) { t.onRenderFrame(); }
|
||||
}, this.onRenderStop, this.onRenderStart);
|
||||
};
|
||||
|
||||
Renderer.prototype.stop = function() {
|
||||
this.layout.stop();
|
||||
};
|
||||
|
||||
// Array.forEach implementation for IE support..
|
||||
//https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/forEach
|
||||
if ( !Array.prototype.forEach ) {
|
||||
Array.prototype.forEach = function( callback, thisArg ) {
|
||||
// Array.forEach implementation for IE support..
|
||||
//https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/forEach
|
||||
if (!Array.prototype.forEach) {
|
||||
Array.prototype.forEach = function(callback, thisArg) {
|
||||
var T, k;
|
||||
if ( this == null ) {
|
||||
throw new TypeError( " this is null or not defined" );
|
||||
if (this === null) {
|
||||
throw new TypeError(' this is null or not defined');
|
||||
}
|
||||
var O = Object(this);
|
||||
var len = O.length >>> 0; // Hack to convert O.length to a UInt32
|
||||
if ( {}.toString.call(callback) != "[object Function]" ) {
|
||||
throw new TypeError( callback + " is not a function" );
|
||||
if ({}.toString.call(callback) != '[object Function]') {
|
||||
throw new TypeError(callback + ' is not a function');
|
||||
}
|
||||
if ( thisArg ) {
|
||||
if (thisArg) {
|
||||
T = thisArg;
|
||||
}
|
||||
k = 0;
|
||||
while( k < len ) {
|
||||
while (k < len) {
|
||||
var kValue;
|
||||
if ( k in O ) {
|
||||
kValue = O[ k ];
|
||||
callback.call( T, kValue, k, O );
|
||||
if (k in O) {
|
||||
kValue = O[k];
|
||||
callback.call(T, kValue, k, O);
|
||||
}
|
||||
k++;
|
||||
}
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
var isEmpty = function(obj) {
|
||||
for (var k in obj) {
|
||||
if (obj.hasOwnProperty(k)) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
return true;
|
||||
};
|
||||
|
||||
return Springy;
|
||||
}));
|
||||
|
|
|
|||
211
springyui.js
211
springyui.js
|
|
@ -26,53 +26,49 @@ Copyright (c) 2010 Dennis Hotson
|
|||
(function() {
|
||||
|
||||
jQuery.fn.springy = function(params) {
|
||||
var graph = this.graph = params.graph || new Springy.Graph();
|
||||
var nodeFont = "16px Verdana, sans-serif";
|
||||
var edgeFont = "8px Verdana, sans-serif";
|
||||
var graph = this.graph = params.graph || new Graph();
|
||||
|
||||
var stiffness = params.stiffness || 400.0;
|
||||
var repulsion = params.repulsion || 400.0;
|
||||
var damping = params.damping || 0.5;
|
||||
var minEnergyThreshold = params.minEnergyThreshold || 0.00001;
|
||||
var nodeSelected = params.nodeSelected || null;
|
||||
var nodeImages = {};
|
||||
var edgeLabelsUpright = true;
|
||||
|
||||
var canvas = this[0];
|
||||
var ctx = canvas.getContext("2d");
|
||||
var ctx = canvas.getContext('2d');
|
||||
|
||||
var layout = this.layout = new Springy.Layout.ForceDirected(graph, stiffness, repulsion, damping, minEnergyThreshold);
|
||||
var layout = this.layout = new Layout.ForceDirected(graph, stiffness, repulsion, damping);
|
||||
|
||||
// calculate bounding box of graph layout.. with ease-in
|
||||
var currentBB = layout.getBoundingBox();
|
||||
var targetBB = {bottomleft: new Springy.Vector(-2, -2), topright: new Springy.Vector(2, 2)};
|
||||
var targetBB = {bottomleft: new Vector(-2, -2), topright: new Vector(2, 2)};
|
||||
|
||||
// auto adjusting bounding box
|
||||
Springy.requestAnimationFrame(function adjust() {
|
||||
Layout.requestAnimationFrame(function adjust() {
|
||||
targetBB = layout.getBoundingBox();
|
||||
// current gets 20% closer to target every iteration
|
||||
currentBB = {
|
||||
bottomleft: currentBB.bottomleft.add( targetBB.bottomleft.subtract(currentBB.bottomleft)
|
||||
bottomleft: currentBB.bottomleft.add(targetBB.bottomleft.subtract(currentBB.bottomleft)
|
||||
.divide(10)),
|
||||
topright: currentBB.topright.add( targetBB.topright.subtract(currentBB.topright)
|
||||
topright: currentBB.topright.add(targetBB.topright.subtract(currentBB.topright)
|
||||
.divide(10))
|
||||
};
|
||||
|
||||
Springy.requestAnimationFrame(adjust);
|
||||
Layout.requestAnimationFrame(adjust);
|
||||
});
|
||||
|
||||
// convert to/from screen coordinates
|
||||
var toScreen = function(p) {
|
||||
toScreen = function(p) {
|
||||
var size = currentBB.topright.subtract(currentBB.bottomleft);
|
||||
var sx = p.subtract(currentBB.bottomleft).divide(size.x).x * canvas.width;
|
||||
var sy = p.subtract(currentBB.bottomleft).divide(size.y).y * canvas.height;
|
||||
return new Springy.Vector(sx, sy);
|
||||
return new Vector(sx, sy);
|
||||
};
|
||||
|
||||
var fromScreen = function(s) {
|
||||
fromScreen = function(s) {
|
||||
var size = currentBB.topright.subtract(currentBB.bottomleft);
|
||||
var px = (s.x / canvas.width) * size.x + currentBB.bottomleft.x;
|
||||
var py = (s.y / canvas.height) * size.y + currentBB.bottomleft.y;
|
||||
return new Springy.Vector(px, py);
|
||||
return new Vector(px, py);
|
||||
};
|
||||
|
||||
// half-assed drag and drop
|
||||
|
|
@ -81,6 +77,8 @@ jQuery.fn.springy = function(params) {
|
|||
var dragged = null;
|
||||
|
||||
jQuery(canvas).mousedown(function(e) {
|
||||
jQuery('.actions').hide();
|
||||
|
||||
var pos = jQuery(this).offset();
|
||||
var p = fromScreen({x: e.pageX - pos.left, y: e.pageY - pos.top});
|
||||
selected = nearest = dragged = layout.nearest(p);
|
||||
|
|
@ -96,17 +94,6 @@ jQuery.fn.springy = function(params) {
|
|||
renderer.start();
|
||||
});
|
||||
|
||||
// Basic double click handler
|
||||
jQuery(canvas).dblclick(function(e) {
|
||||
var pos = jQuery(this).offset();
|
||||
var p = fromScreen({x: e.pageX - pos.left, y: e.pageY - pos.top});
|
||||
selected = layout.nearest(p);
|
||||
node = selected.node;
|
||||
if (node && node.data && node.data.ondoubleclick) {
|
||||
node.data.ondoubleclick();
|
||||
}
|
||||
});
|
||||
|
||||
jQuery(canvas).mousemove(function(e) {
|
||||
var pos = jQuery(this).offset();
|
||||
var p = fromScreen({x: e.pageX - pos.left, y: e.pageY - pos.top});
|
||||
|
|
@ -120,69 +107,33 @@ jQuery.fn.springy = function(params) {
|
|||
renderer.start();
|
||||
});
|
||||
|
||||
jQuery(window).bind('mouseup',function(e) {
|
||||
jQuery(window).bind('mouseup', function(e) {
|
||||
dragged = null;
|
||||
});
|
||||
|
||||
var getTextWidth = function(node) {
|
||||
var text = (node.data.label !== undefined) ? node.data.label : node.id;
|
||||
if (node._width && node._width[text])
|
||||
return node._width[text];
|
||||
Node.prototype.getWidth = function() {
|
||||
var text = (this.data.label !== undefined) ? this.data.label : this.id;
|
||||
if (this._width && this._width[text])
|
||||
return this._width[text];
|
||||
|
||||
ctx.save();
|
||||
ctx.font = (node.data.font !== undefined) ? node.data.font : nodeFont;
|
||||
var width = ctx.measureText(text).width;
|
||||
ctx.font = '16px Verdana, sans-serif';
|
||||
var width = ctx.measureText(text).width + 10;
|
||||
ctx.restore();
|
||||
|
||||
node._width || (node._width = {});
|
||||
node._width[text] = width;
|
||||
this._width || (this._width = {});
|
||||
this._width[text] = width;
|
||||
|
||||
return width;
|
||||
};
|
||||
|
||||
var getTextHeight = function(node) {
|
||||
return 16;
|
||||
// In a more modular world, this would actually read the font size, but I think leaving it a constant is sufficient for now.
|
||||
// If you change the font size, I'd adjust this too.
|
||||
Node.prototype.getHeight = function() {
|
||||
return 20;
|
||||
};
|
||||
|
||||
var getImageWidth = function(node) {
|
||||
var width = (node.data.image.width !== undefined) ? node.data.image.width : nodeImages[node.data.image.src].object.width;
|
||||
return width;
|
||||
}
|
||||
|
||||
var getImageHeight = function(node) {
|
||||
var height = (node.data.image.height !== undefined) ? node.data.image.height : nodeImages[node.data.image.src].object.height;
|
||||
return height;
|
||||
}
|
||||
|
||||
Springy.Node.prototype.getHeight = function() {
|
||||
var height;
|
||||
if (this.data.image == undefined) {
|
||||
height = getTextHeight(this);
|
||||
} else {
|
||||
if (this.data.image.src in nodeImages && nodeImages[this.data.image.src].loaded) {
|
||||
height = getImageHeight(this);
|
||||
} else {height = 10;}
|
||||
}
|
||||
return height;
|
||||
}
|
||||
|
||||
Springy.Node.prototype.getWidth = function() {
|
||||
var width;
|
||||
if (this.data.image == undefined) {
|
||||
width = getTextWidth(this);
|
||||
} else {
|
||||
if (this.data.image.src in nodeImages && nodeImages[this.data.image.src].loaded) {
|
||||
width = getImageWidth(this);
|
||||
} else {width = 10;}
|
||||
}
|
||||
return width;
|
||||
}
|
||||
|
||||
var renderer = this.renderer = new Springy.Renderer(layout,
|
||||
var renderer = new Renderer(layout,
|
||||
function clear() {
|
||||
ctx.clearRect(0,0,canvas.width,canvas.height);
|
||||
ctx.clearRect(0, 0, canvas.width, canvas.height);
|
||||
},
|
||||
function drawEdge(edge, p1, p2) {
|
||||
var x1 = toScreen(p1).x;
|
||||
|
|
@ -190,7 +141,7 @@ jQuery.fn.springy = function(params) {
|
|||
var x2 = toScreen(p2).x;
|
||||
var y2 = toScreen(p2).y;
|
||||
|
||||
var direction = new Springy.Vector(x2-x1, y2-y1);
|
||||
var direction = new Vector(x2 - x1, y2 - y1);
|
||||
var normal = direction.normal().normalise();
|
||||
|
||||
var from = graph.getEdges(edge.source, edge.target);
|
||||
|
|
@ -200,28 +151,24 @@ jQuery.fn.springy = function(params) {
|
|||
|
||||
// Figure out edge's position in relation to other edges between the same nodes
|
||||
var n = 0;
|
||||
for (var i=0; i<from.length; i++) {
|
||||
for (var i = 0; i < from.length; i++) {
|
||||
if (from[i].id === edge.id) {
|
||||
n = i;
|
||||
}
|
||||
}
|
||||
|
||||
//change default to 10.0 to allow text fit between edges
|
||||
var spacing = 12.0;
|
||||
var spacing = 6.0;
|
||||
|
||||
// Figure out how far off center the line should be drawn
|
||||
var offset = normal.multiply(-((total - 1) * spacing)/2.0 + (n * spacing));
|
||||
|
||||
var paddingX = 6;
|
||||
var paddingY = 6;
|
||||
var offset = normal.multiply(-((total - 1) * spacing) / 2.0 + (n * spacing));
|
||||
|
||||
var s1 = toScreen(p1).add(offset);
|
||||
var s2 = toScreen(p2).add(offset);
|
||||
|
||||
var boxWidth = edge.target.getWidth() + paddingX;
|
||||
var boxHeight = edge.target.getHeight() + paddingY;
|
||||
var boxWidth = edge.target.getWidth();
|
||||
var boxHeight = edge.target.getHeight();
|
||||
|
||||
var intersection = intersect_line_box(s1, s2, {x: x2-boxWidth/2.0, y: y2-boxHeight/2.0}, boxWidth, boxHeight);
|
||||
var intersection = intersect_line_box(s1, s2, {x: x2 - boxWidth / 2.0, y: y2 - boxHeight / 2.0}, boxWidth, boxHeight);
|
||||
|
||||
if (!intersection) {
|
||||
intersection = s2;
|
||||
|
|
@ -272,22 +219,13 @@ jQuery.fn.springy = function(params) {
|
|||
|
||||
// label
|
||||
if (edge.data.label !== undefined) {
|
||||
text = edge.data.label
|
||||
text = edge.data.label;
|
||||
ctx.save();
|
||||
ctx.textAlign = "center";
|
||||
ctx.textBaseline = "top";
|
||||
ctx.font = (edge.data.font !== undefined) ? edge.data.font : edgeFont;
|
||||
ctx.fillStyle = stroke;
|
||||
var angle = Math.atan2(s2.y - s1.y, s2.x - s1.x);
|
||||
var displacement = -8;
|
||||
if (edgeLabelsUpright && (angle > Math.PI/2 || angle < -Math.PI/2)) {
|
||||
displacement = 8;
|
||||
angle += Math.PI;
|
||||
}
|
||||
var textPos = s1.add(s2).divide(2).add(normal.multiply(displacement));
|
||||
ctx.translate(textPos.x, textPos.y);
|
||||
ctx.rotate(angle);
|
||||
ctx.fillText(text, 0,-2);
|
||||
ctx.textAlign = 'center';
|
||||
ctx.textBaseline = 'top';
|
||||
ctx.font = '10px Helvetica, sans-serif';
|
||||
ctx.fillStyle = '#5BA6EC';
|
||||
ctx.fillText(text, (x1 + x2) / 2, (y1 + y2) / 2);
|
||||
ctx.restore();
|
||||
}
|
||||
|
||||
|
|
@ -297,57 +235,30 @@ jQuery.fn.springy = function(params) {
|
|||
|
||||
ctx.save();
|
||||
|
||||
// Pulled out the padding aspect sso that the size functions could be used in multiple places
|
||||
// These should probably be settable by the user (and scoped higher) but this suffices for now
|
||||
var paddingX = 6;
|
||||
var paddingY = 6;
|
||||
|
||||
var contentWidth = node.getWidth();
|
||||
var contentHeight = node.getHeight();
|
||||
var boxWidth = contentWidth + paddingX;
|
||||
var boxHeight = contentHeight + paddingY;
|
||||
var boxWidth = node.getWidth();
|
||||
var boxHeight = node.getHeight();
|
||||
|
||||
// clear background
|
||||
ctx.clearRect(s.x - boxWidth/2, s.y - boxHeight/2, boxWidth, boxHeight);
|
||||
ctx.clearRect(s.x - boxWidth / 2, s.y - 10, boxWidth, 20);
|
||||
|
||||
// fill background
|
||||
if (selected !== null && selected.node !== null && selected.node.id === node.id) {
|
||||
ctx.fillStyle = "#FFFFE0";
|
||||
if (selected !== null && nearest.node !== null && selected.node.id === node.id) {
|
||||
ctx.fillStyle = '#FFFFE0';
|
||||
} else if (nearest !== null && nearest.node !== null && nearest.node.id === node.id) {
|
||||
ctx.fillStyle = "#EEEEEE";
|
||||
ctx.fillStyle = '#EEEEEE';
|
||||
} else {
|
||||
ctx.fillStyle = "#FFFFFF";
|
||||
ctx.fillStyle = '#FFFFFF';
|
||||
}
|
||||
ctx.fillRect(s.x - boxWidth/2, s.y - boxHeight/2, boxWidth, boxHeight);
|
||||
ctx.fillRect(s.x - boxWidth / 2, s.y - 10, boxWidth, 20);
|
||||
|
||||
if (node.data.image == undefined) {
|
||||
ctx.textAlign = "left";
|
||||
ctx.textBaseline = "top";
|
||||
ctx.font = (node.data.font !== undefined) ? node.data.font : nodeFont;
|
||||
ctx.fillStyle = (node.data.color !== undefined) ? node.data.color : "#000000";
|
||||
ctx.textAlign = 'left';
|
||||
ctx.textBaseline = 'top';
|
||||
ctx.font = '16px Verdana, sans-serif';
|
||||
ctx.fillStyle = '#000000';
|
||||
ctx.font = '16px Verdana, sans-serif';
|
||||
var text = (node.data.label !== undefined) ? node.data.label : node.id;
|
||||
ctx.fillText(text, s.x - contentWidth/2, s.y - contentHeight/2);
|
||||
} else {
|
||||
// Currently we just ignore any labels if the image object is set. One might want to extend this logic to allow for both, or other composite nodes.
|
||||
var src = node.data.image.src; // There should probably be a sanity check here too, but un-src-ed images aren't exaclty a disaster.
|
||||
if (src in nodeImages) {
|
||||
if (nodeImages[src].loaded) {
|
||||
// Our image is loaded, so it's safe to draw
|
||||
ctx.drawImage(nodeImages[src].object, s.x - contentWidth/2, s.y - contentHeight/2, contentWidth, contentHeight);
|
||||
}
|
||||
}else{
|
||||
// First time seeing an image with this src address, so add it to our set of image objects
|
||||
// Note: we index images by their src to avoid making too many duplicates
|
||||
nodeImages[src] = {};
|
||||
var img = new Image();
|
||||
nodeImages[src].object = img;
|
||||
img.addEventListener("load", function () {
|
||||
// HTMLImageElement objects are very finicky about being used before they are loaded, so we set a flag when it is done
|
||||
nodeImages[src].loaded = true;
|
||||
});
|
||||
img.src = src;
|
||||
}
|
||||
}
|
||||
ctx.fillText(text, s.x - boxWidth / 2 + 5, s.y - 8);
|
||||
|
||||
ctx.restore();
|
||||
}
|
||||
);
|
||||
|
|
@ -356,21 +267,21 @@ jQuery.fn.springy = function(params) {
|
|||
|
||||
// helpers for figuring out where to draw arrows
|
||||
function intersect_line_line(p1, p2, p3, p4) {
|
||||
var denom = ((p4.y - p3.y)*(p2.x - p1.x) - (p4.x - p3.x)*(p2.y - p1.y));
|
||||
var denom = ((p4.y - p3.y) * (p2.x - p1.x) - (p4.x - p3.x) * (p2.y - p1.y));
|
||||
|
||||
// lines are parallel
|
||||
if (denom === 0) {
|
||||
return false;
|
||||
}
|
||||
|
||||
var ua = ((p4.x - p3.x)*(p1.y - p3.y) - (p4.y - p3.y)*(p1.x - p3.x)) / denom;
|
||||
var ub = ((p2.x - p1.x)*(p1.y - p3.y) - (p2.y - p1.y)*(p1.x - p3.x)) / denom;
|
||||
var ua = ((p4.x - p3.x) * (p1.y - p3.y) - (p4.y - p3.y) * (p1.x - p3.x)) / denom;
|
||||
var ub = ((p2.x - p1.x) * (p1.y - p3.y) - (p2.y - p1.y) * (p1.x - p3.x)) / denom;
|
||||
|
||||
if (ua < 0 || ua > 1 || ub < 0 || ub > 1) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return new Springy.Vector(p1.x + ua * (p2.x - p1.x), p1.y + ua * (p2.y - p1.y));
|
||||
return new Vector(p1.x + ua * (p2.x - p1.x), p1.y + ua * (p2.y - p1.y));
|
||||
}
|
||||
|
||||
function intersect_line_box(p1, p2, p3, w, h) {
|
||||
|
|
@ -389,6 +300,6 @@ jQuery.fn.springy = function(params) {
|
|||
}
|
||||
|
||||
return this;
|
||||
}
|
||||
};
|
||||
|
||||
})();
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user