112 lines
2.7 KiB
JavaScript
112 lines
2.7 KiB
JavaScript
var originalPlanetaryjs = null;
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if (window) originalPlanetaryjs = window.planetaryjs;
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var plugins = [];
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var doDrawLoop = function(planet, canvas, hooks) {
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d3.timer(function() {
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planet.context.clearRect(0, 0, canvas.width, canvas.height)
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for (var i = 0; i < hooks.onDraw.length; i++) {
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hooks.onDraw[i]();
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}
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});
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};
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var startDraw = function(planet, canvas, localPlugins, hooks) {
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for (var i = 0; i < plugins.length; i++) {
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localPlugins.unshift(plugins[i]);
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}
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if (localPlugins.length == 0 && planetaryjs.plugins.earth) {
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planet.loadPlugin(planetaryjs.plugins.earth());
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}
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for (var i = 0; i < localPlugins.length; i++) {
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var plugin = localPlugins[i][0];
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var config = localPlugins[i][1];
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plugin(planet, config);
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}
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planet.canvas = canvas;
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planet.context = canvas.getContext('2d');
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if (hooks.onInit.length) {
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var completed = 0;
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var doNext = function(callback) {
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var next = hooks.onInit[completed];
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if (next.length) {
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next(function() {
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completed++;
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callback();
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});
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} else {
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next();
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completed++;
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setTimeout(callback, 0);
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}
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};
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var check = function() {
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if (completed >= hooks.onInit.length) doDrawLoop(planet, canvas, hooks);
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else doNext(check);
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}
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doNext(check);
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} else {
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doDrawLoop(planet, canvas, hooks);
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}
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};
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var planetaryjs = {
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plugins: {},
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noConflict: function() {
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window.planetaryjs = originalPlanetaryjs;
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return planetaryjs;
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},
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loadPlugin: function(plugin, defaultOptions) {
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plugins.push([plugin, defaultOptions || {}]);
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},
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planet: function() {
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var localPlugins = [];
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var hooks = {
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onInit: [],
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onDraw: []
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};
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var planet = {
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draw: function(canvas) {
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startDraw(planet, canvas, localPlugins, hooks);
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},
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onInit: function(fn) {
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hooks.onInit.push(fn);
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},
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onDraw: function(fn) {
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hooks.onDraw.push(fn);
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},
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loadPlugin: function(plugin, defaultOptions) {
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localPlugins.push([plugin, defaultOptions || {}]);
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},
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withSavedContext: function(fn) {
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if (!this.context) {
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throw new Error("No canvas to fetch context for")
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}
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this.context.save();
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fn(this.context);
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this.context.restore();
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}
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};
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planet.projection = d3.geo.orthographic()
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.clipAngle(90)
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.precision(0);
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planet.path = d3.geo.path().projection(planet.projection);
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return planet;
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}
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};
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