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Created September 18, 2012 13:24
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Changing Zoom Domain
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i=e[r],s=i[0],o=i[1];t.forEach(function(e){e.angle=Math.atan2(e[0]-s,e[1]-o)}),t.sort(function(e,t){return e.angle-t.angle});for(var u=0,a=t.length-1;u<a;u++)n.push([i,t[u],t[u+1]])}),n},d3.geom.quadtree=function(e,t,n,r,i){function s(e,t,n,r,i,s){if(isNaN(t.x)||isNaN(t.y))return;if(e.leaf){var u=e.point;u?Math.abs(u.x-t.x)+Math.abs(u.y-t.y)<.01?o(e,t,n,r,i,s):(e.point=null,o(e,u,n,r,i,s),o(e,t,n,r,i,s)):e.point=t}else o(e,t,n,r,i,s)}function o(e,t,n,r,i,o){var u=(n+i)*.5,a=(r+o)*.5,f=t.x>=u,l=t.y>=a,c=(l<<1)+f;e.leaf=!1,e=e.nodes[c]||(e.nodes[c]=ui()),f?n=u:i=u,l?r=a:o=a,s(e,t,n,r,i,o)}var u,a=-1,f=e.length;f&&isNaN(e[0].x)&&(e=e.map(fi));if(arguments.length<5)if(arguments.length===3)i=r=n,n=t;else{t=n=Infinity,r=i=-Infinity;while(++a<f)u=e[a],u.x<t&&(t=u.x),u.y<n&&(n=u.y),u.x>r&&(r=u.x),u.y>i&&(i=u.y);var l=r-t,c=i-n;l>c?i=n+l:r=t+c}var h=ui();return h.add=function(e){s(h,e,t,n,r,i)},h.visit=function(e){ai(e,h,t,n,r,i)},e.forEach(h.add),h},d3.time={};var po=Date,vo=["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];li.prototype={getDate:function(){return this._.getUTCDate()},getDay:function(){return this._.getUTCDay()},getFullYear:function(){return this._.getUTCFullYear()},getHours:function(){return this._.getUTCHours()},getMilliseconds:function(){return this._.getUTCMilliseconds()},getMinutes:function(){return this._.getUTCMinutes()},getMonth:function(){return this._.getUTCMonth()},getSeconds:function(){return this._.getUTCSeconds()},getTime:function(){return this._.getTime()},getTimezoneOffset:function(){return 0},valueOf:function(){return this._.valueOf()},setDate:function(){mo.setUTCDate.apply(this._,arguments)},setDay:function(){mo.setUTCDay.apply(this._,arguments)},setFullYear:function(){mo.setUTCFullYear.apply(this._,arguments)},setHours:function(){mo.setUTCHours.apply(this._,arguments)},setMilliseconds:function(){mo.setUTCMilliseconds.apply(this._,arguments)},setMinutes:function(){mo.setUTCMinutes.apply(this._,arguments)},setMonth:function(){mo.setUTCMonth.apply(this._,arguments)},setSeconds:function(){mo.setUTCSeconds.apply(this._,arguments)},setTime:function(){mo.setTime.apply(this._,arguments)}};var mo=Date.prototype,go="%a %b %e %H:%M:%S %Y",yo="%m/%d/%y",bo="%H:%M:%S",wo=vo,Eo=wo.map(ci),So=["January","February","March","April","May","June","July","August","September","October","November","December"],xo=So.map(ci);d3.time.format=function(e){function t(t){var r=[],i=-1,s=0,o,u;while(++i<n)e.charCodeAt(i)==37&&(r.push(e.substring(s,i),(u=Po[o=e.charAt(++i)])?u(t):o),s=i+1);return r.push(e.substring(s,i)),r.join("")}var n=e.length;return t.parse=function(t){var n={y:1900,m:0,d:1,H:0,M:0,S:0,L:0},r=hi(n,e,t,0);if(r!=t.length)return null;"p"in n&&(n.H=n.H%12+n.p*12);var i=new po;return i.setFullYear(n.y,n.m,n.d),i.setHours(n.H,n.M,n.S,n.L),i},t.toString=function(){return e},t};var To=d3.format("02d"),No=d3.format("03d"),Co=d3.format("04d"),ko=d3.format("2d"),Lo=pi(wo),Ao=pi(Eo),Oo=pi(So),Mo=di(So),_o=pi(xo),Do=di(xo),Po={a:function(e){return Eo[e.getDay()]},A:function(e){return wo[e.getDay()]},b:function(e){return xo[e.getMonth()]},B:function(e){return So[e.getMonth()]},c:d3.time.format(go),d:function(e){return To(e.getDate())},e:function(e){return ko(e.getDate())},H:function(e){return To(e.getHours())},I:function(e){return To(e.getHours()%12||12)},j:function(e){return No(1+d3.time.dayOfYear(e))},L:function(e){return No(e.getMilliseconds())},m:function(e){return To(e.getMonth()+1)},M:function(e){return To(e.getMinutes())},p:function(e){return e.getHours()>=12?"PM":"AM"},S:function(e){return To(e.getSeconds())},U:function(e){return To(d3.time.sundayOfYear(e))},w:function(e){return e.getDay()},W:function(e){return To(d3.time.mondayOfYear(e))},x:d3.time.format(yo),X:d3.time.format(bo),y:function(e){return To(e.getFullYear()%100)},Y:function(e){return Co(e.getFullYear()%1e4)},Z:_i,"%":function(e){return"%"}},Ho={a:vi,A:mi,b:gi,B:yi,c:bi,d:Ci,e:Ci,H:ki,I:ki,L:Oi,m:Ni,M:Li,p:Mi,S:Ai,x:wi,X:Ei,y:xi,Y:Si},Bo=/^\s*\d+/,jo=d3.map({am:0,pm:1});d3.time.format.utc=function(e){function t(e){try{po=li;var t=new po;return t._=e,n(t)}finally{po=Date}}var n=d3.time.format(e);return t.parse=function(e){try{po=li;var t=n.parse(e);return t&&t._}finally{po=Date}},t.toString=n.toString,t};var Fo=d3.time.format.utc("%Y-%m-%dT%H:%M:%S.%LZ");d3.time.format.iso=Date.prototype.toISOString?Di:Fo,Di.parse=function(e){var t=new Date(e);return isNaN(t)?null:t},Di.toString=Fo.toString,d3.time.second=Pi(function(e){return new po(Math.floor(e/1e3)*1e3)},function(e,t){e.setTime(e.getTime()+Math.floor(t)*1e3)},function(e){return e.getSeconds()}),d3.time.seconds=d3.time.second.range,d3.time.seconds.utc=d3.time.second.utc.range,d3.time.minute=Pi(function(e){return new po(Math.floor(e/6e4)*6e4)},function(e,t){e.setTime(e.getTime()+Math.floor(t)*6e4)},function(e){return e.getMinutes()}),d3.time.minutes=d3.time.minute.range,d3.time.minutes.utc=d3.time.minute.utc.range,d3.time.hour=Pi(function(e){var t=e.getTimezoneOffset()/60;return new po((Math.floor(e/36e5-t)+t)*36e5)},function(e,t){e.setTime(e.getTime()+Math.floor(t)*36e5)},function(e){return e.getHours()}),d3.time.hours=d3.time.hour.range,d3.time.hours.utc=d3.time.hour.utc.range,d3.time.day=Pi(function(e){var t=new po(1970,0);return t.setFullYear(e.getFullYear(),e.getMonth(),e.getDate()),t},function(e,t){e.setDate(e.getDate()+t)},function(e){return 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e.getMonth()}),d3.time.months=d3.time.month.range,d3.time.months.utc=d3.time.month.utc.range,d3.time.year=Pi(function(e){return e=d3.time.day(e),e.setMonth(0,1),e},function(e,t){e.setFullYear(e.getFullYear()+t)},function(e){return e.getFullYear()}),d3.time.years=d3.time.year.range,d3.time.years.utc=d3.time.year.utc.range;var Io=[1e3,5e3,15e3,3e4,6e4,3e5,9e5,18e5,36e5,108e5,216e5,432e5,864e5,1728e5,6048e5,2592e6,7776e6,31536e6],qo=[[d3.time.second,1],[d3.time.second,5],[d3.time.second,15],[d3.time.second,30],[d3.time.minute,1],[d3.time.minute,5],[d3.time.minute,15],[d3.time.minute,30],[d3.time.hour,1],[d3.time.hour,3],[d3.time.hour,6],[d3.time.hour,12],[d3.time.day,1],[d3.time.day,2],[d3.time.week,1],[d3.time.month,1],[d3.time.month,3],[d3.time.year,1]],Ro=[[d3.time.format("%Y"),function(e){return!0}],[d3.time.format("%B"),function(e){return e.getMonth()}],[d3.time.format("%b %d"),function(e){return e.getDate()!=1}],[d3.time.format("%a %d"),function(e){return e.getDay()&&e.getDate()!=1}],[d3.time.format("%I %p"),function(e){return e.getHours()}],[d3.time.format("%I:%M"),function(e){return e.getMinutes()}],[d3.time.format(":%S"),function(e){return e.getSeconds()}],[d3.time.format(".%L"),function(e){return e.getMilliseconds()}]],Uo=d3.scale.linear(),zo=Ii(Ro);qo.year=function(e,t){return Uo.domain(e.map(Ri)).ticks(t).map(qi)},d3.time.scale=function(){return Bi(d3.scale.linear(),qo,zo)};var Wo=qo.map(function(e){return[e[0].utc,e[1]]}),Xo=[[d3.time.format.utc("%Y"),function(e){return!0}],[d3.time.format.utc("%B"),function(e){return e.getUTCMonth()}],[d3.time.format.utc("%b %d"),function(e){return e.getUTCDate()!=1}],[d3.time.format.utc("%a %d"),function(e){return e.getUTCDay()&&e.getUTCDate()!=1}],[d3.time.format.utc("%I %p"),function(e){return e.getUTCHours()}],[d3.time.format.utc("%I:%M"),function(e){return e.getUTCMinutes()}],[d3.time.format.utc(":%S"),function(e){return e.getUTCSeconds()}],[d3.time.format.utc(".%L"),function(e){return e.getUTCMilliseconds()}]],Vo=Ii(Xo);Wo.year=function(e,t){return Uo.domain(e.map(zi)).ticks(t).map(Ui)},d3.time.scale.utc=function(){return Bi(d3.scale.linear(),Wo,Vo)}})();
<!DOCTYPE html>
<meta charset="utf-8">
<title>Zoom Behaviour and Timer</title>
<script src="http://d3js.org/d3.v2.min.js?2.10.1"></script>
<style>
body {
font-family: sans-serif;
}
.noselect {
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
svg {
font: 10px sans-serif;
shape-rendering: crispEdges;
}
rect {
fill: #ddd;
}
rect.zoom {
stroke: steelblue;
fill-opacity: 0.5;
}
.axis path, .axis line {
fill: none;
stroke: #fff;
}
</style>
<body>
<script>
var margin = {top: 0, right: 12, bottom: 12, left: 36},
width = 960 - margin.left - margin.right,
height = 430 - margin.top - margin.bottom;
var x0 = d3.scale.linear()
.domain([-width / 2, width / 2])
.range([0, width]),
x = x0.copy();
var y = d3.scale.linear()
.domain([-height / 2, height / 2])
.range([height, 0]);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.tickSize(-height);
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.ticks(5)
.tickSize(-width);
var zoom = d3.behavior.zoom()
.scaleExtent([1, Infinity])
.x(x)
.y(y)
.on("zoom", refresh);
var timer = true;
var svg = d3.select("body").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.call(zoom)
.on("mousedown", function() { timer = false; })
.on("mouseup", function() { timer = true; });
svg.append("rect")
.attr("width", width)
.attr("height", height);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.call(yAxis);
setInterval(function() {
if (!timer) return;
var translate = zoom.translate(),
scale = zoom.scale(),
xd = x0.domain(),
dx = 1;
// Set a new x-domain: offset by dx.
xd[0] += dx;
xd[1] += dx;
x0.domain(xd)
// Set the zoom x-domain (this resets the domain at zoom scale=1).
zoom.x(x.domain(xd));
// Reset the domain relative to the current zoom offsets.
x.domain(x0.range().map(function(x) { return (x - translate[0]) / scale; }).map(x0.invert));
refresh();
}, 1e3);
function refresh() {
svg.select(".x.axis").call(xAxis);
svg.select(".y.axis").call(yAxis);
}
</script>
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