From ab9478c3954200a84bcbce98ca492b3baad28174 Mon Sep 17 00:00:00 2001 From: Stuart Date: Mon, 15 Oct 2018 15:38:14 +0100 Subject: [PATCH] Reduce projection label footprint Don't block interaction. --- 0.7.0/virtualsky.js | 10 +++++----- 0.7.0/virtualsky.min.js | 2 +- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/0.7.0/virtualsky.js b/0.7.0/virtualsky.js index e01b2e0..50880cd 100644 --- a/0.7.0/virtualsky.js +++ b/0.7.0/virtualsky.js @@ -1624,12 +1624,12 @@ VirtualSky.prototype.selectProjection = function(proj){ .css({ 'position':'absolute', 'padding':0, - 'width':w+'px', - 'height':h+'px', - 'top':'0px', - 'left':'0px', + 'height':'2em', + 'top':'50%', + 'left':'50%', + 'transform':'translate3D(-50%,-50%,0)', 'text-align':'center', - 'line-height':h+'px', + 'line-height':'2em', 'z-index':20, 'font-size':'1.5em', 'display':'block', diff --git a/0.7.0/virtualsky.min.js b/0.7.0/virtualsky.min.js index b77b587..7d54382 100644 --- a/0.7.0/virtualsky.min.js +++ b/0.7.0/virtualsky.min.js @@ -18,4 +18,4 @@ function VirtualSky(input){this.version="0.7.0";this.ie=false;this.excanvas=(typ /*@cc_on this.ie = true @*/ -this.setDir=function(){var d=S("script[src*=virtualsky]").attr("src")[0].match(/^.*\//);this.dir=d&&d[0]||"";return};this.getDir=function(pattern){if(typeof pattern!=="string"){pattern="virtualsky"}var d=S("script[src*="+pattern+"]").attr("src");if(typeof d==="string"){d=[d]}if(d.length<1){d=[""]}d=d[0].match(/^.*\//);return d&&d[0]||""};this.q=S.query();this.setDir();this.dir=this.getDir();this.langurl=this.dir+"lang/%LANG%.json";this.id="";this.gradient=true;this.magnitude=5;this.background="rgba(0,0,0,0)";this.color="";this.wide=0;this.tall=0;this.d2r=Math.PI/180;this.r2d=180/Math.PI;this.setLongitude(-119.86286);this.setLatitude(34.4326);this.spin=false;this.cardinalpoints=true;this.constellation={lines:false,boundaries:false,labels:false};this.meteorshowers=false;this.negative=false;this.showgalaxy=false;this.showstars=true;this.showstarlabels=false;this.showplanets=true;this.showplanetlabels=true;this.showorbits=false;this.showdate=true;this.showposition=true;this.scalestars=1;this.ground=false;this.grid={az:false,eq:false,gal:false,step:30};this.gal={processed:false,lineWidth:0.75};this.ecliptic=false;this.meridian=false;this.keyboard=true;this.mouse=true;this.islive=false;this.fullscreen=false;this.transparent=false;this.fps=10;this.credit=(location.host=="lco.global"&&location.href.indexOf("/embed")<0)?false:true;this.callback={geo:"",mouseenter:"",mouseout:""};this.keys=new Array();this.base="";this.az_step=0;this.az_off=0;this.ra_off=0;this.dc_off=0;this.fov=30;this.plugins=[];this.calendarevents=[];this.events={};this.projections={polar:{title:"Polar projection",azel2xy:function(az,el,w,h){var radius=h/2;var r=radius*((Math.PI/2)-el)/(Math.PI/2);return{x:(w/2-r*Math.sin(az)),y:(radius-r*Math.cos(az)),el:el}},polartype:true,atmos:true},fisheye:{title:"Fisheye polar projection",azel2xy:function(az,el,w,h){var radius=h/2;var r=radius*Math.sin(((Math.PI/2)-el)/2)/0.70710678;return{x:(w/2-r*Math.sin(az)),y:(radius-r*Math.cos(az)),el:el}},polartype:true,atmos:true},ortho:{title:"Orthographic polar projection",azel2xy:function(az,el,w,h){var radius=h/2;var r=radius*Math.cos(el);return{x:(w/2-r*Math.sin(az)),y:(radius-r*Math.cos(az)),el:el}},polartype:true,atmos:true},stereo:{title:"Stereographic projection",azel2xy:function(az,el,w,h){var f=0.42;var sinel1=0;var cosel1=1;var cosaz=Math.cos((az-Math.PI));var sinaz=Math.sin((az-Math.PI));var sinel=Math.sin(el);var cosel=Math.cos(el);var k=2/(1+sinel1*sinel+cosel1*cosel*cosaz);return{x:(w/2+f*k*h*cosel*sinaz),y:(h-f*k*h*(cosel1*sinel-sinel1*cosel*cosaz)),el:el}},atmos:true},lambert:{title:"Lambert projection",azel2xy:function(az,el,w,h){var cosaz=Math.cos((az-Math.PI));var sinaz=Math.sin((az-Math.PI));var sinel=Math.sin(el);var cosel=Math.cos(el);var k=Math.sqrt(2/(1+cosel*cosaz));return{x:(w/2+0.6*h*k*cosel*sinaz),y:(h-0.6*h*k*(sinel)),el:el}},atmos:true},gnomic:{title:"Gnomic projection",azel2xy:function(az,el){if(el>=0){var pos=this.azel2radec(az,el);return this.radec2xy(pos.ra*this.d2r,pos.dec*this.d2r,[el,az])}else{return{x:-1,y:-1,el:el}}},radec2xy:function(ra,dec,coords){var fov,cd,cd0,sd,sd0,dA,A,F,scale,twopi;if(Math.abs(dec-this.dc_off)>this.maxangle){return{x:-1,y:-1,el:-1}}var ang=this.greatCircle(this.ra_off,this.dc_off,ra,dec);if(ang>this.maxangle){return{x:-1,y:-1,el:-1}}if(!coords){coords=this.coord2horizon(ra,dec)}if(this.ground&&coords[0]<-0.000001){return{x:-1,y:-1,el:coords[0]*this.r2d}}scale=this.tall/this.fov;cd=Math.cos(dec);cd0=Math.cos(this.dc_off);sd=Math.sin(dec);sd0=Math.sin(this.dc_off);dA=ra-this.ra_off;dA=inrangeAz(dA);A=cd*Math.cos(dA);F=scale*this.r2d/(sd0*sd+A*cd0);return{x:(this.wide/2)-F*cd*Math.sin(dA),y:(this.tall/2)-F*(cd0*sd-A*sd0),el:coords[0]*this.r2d}},draw:function(){if(!this.transparent){this.ctx.fillStyle=(this.hasGradient())?"rgba(0,15,30, 1)":((this.negative)?this.col.white:this.col.black);this.ctx.fillRect(0,0,this.wide,this.tall);this.ctx.fill()}},isVisible:function(el){return true},atmos:false,fullsky:true},equirectangular:{title:"Equirectangular projection",azel2xy:function(az,el,w,h){while(az<0){az+=2*Math.PI}az=(az)%(Math.PI*2);return{x:(((az-Math.PI)/(Math.PI/2))*h+w/2),y:(h-(el/(Math.PI/2))*h),el:el}},maxb:90,atmos:true},mollweide:{title:"Mollweide projection",radec2xy:function(ra,dec){var dtheta,x,y,coords,sign,outside,normra;var thetap=Math.abs(dec);var pisindec=Math.PI*Math.sin(Math.abs(dec));for(var i=0;i<20;i++){dtheta=-(thetap+Math.sin(thetap)-pisindec)/(1+Math.cos(thetap));thetap+=dtheta;if(dtheta<0.0001){break}}normra=(ra+this.d2r*this.az_off)%(2*Math.PI)-Math.PI;outside=false;x=-(2/Math.PI)*(normra)*Math.cos(thetap/2)*this.tall/2+this.wide/2;if(x>this.wide){outside=true}sign=(dec>=0)?1:-1;y=-sign*Math.sin(thetap/2)*this.tall/2+this.tall/2;coords=this.coord2horizon(ra,dec);return{x:(outside?-100:x%this.wide),y:y,el:coords[0]*this.r2d}},draw:function(){var c=this.ctx;c.moveTo(this.wide/2,this.tall/2);c.beginPath();var x=this.wide/2-this.tall;var y=0;var w=this.tall*2;var h=this.tall;var kappa=0.5522848;var ox=(w/2)*kappa;var oy=(h/2)*kappa;var xe=x+w;var ye=y+h;var xm=x+w/2;var ym=y+h/2;c.moveTo(x,ym);c.bezierCurveTo(x,ym-oy,xm-ox,y,xm,y);c.bezierCurveTo(xm+ox,y,xe,ym-oy,xe,ym);c.bezierCurveTo(xe,ym+oy,xm+ox,ye,xm,ye);c.bezierCurveTo(xm-ox,ye,x,ym+oy,x,ym);c.closePath();if(!this.transparent){c.fillStyle=(this.hasGradient())?"rgba(0,15,30, 1)":((this.negative)?this.col.white:this.col.black);c.fill()}},altlabeltext:true,fullsky:true,atmos:false},planechart:{title:"Planechart projection",radec2xy:function(ra,dec){ra=inrangeAz(ra);var normra=(ra+this.d2r*this.az_off)%(2*Math.PI)-Math.PI;var x=-(normra/(2*Math.PI))*this.tall*2+this.wide/2;var y=-(dec/Math.PI)*this.tall+this.tall/2;var coords=this.coord2horizon(ra,dec);return{x:x,y:y,el:coords[0]*this.r2d}},draw:function(){if(!this.transparent){this.ctx.fillStyle=(this.hasGradient())?"rgba(0,15,30, 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2,348.973,-9.09],[114971,3.7,349.291,3.28],[114996,4,349.357,-58.24],[115102,4.4,349.706,-32.53],[115438,4,350.743,-20.1],[115738,5,351.733,1.26],[115830,4.3,351.992,6.38],[116231,4.4,353.243,-37.82],[116584,3.8,354.391,46.46],[116727,3.2,354.837,77.63],[116771,4.1,354.988,5.63],[116928,4.5,355.512,1.78],[118268,4,359.828,6.86]]);this.starnames={};this.file={stars:this.dir+"stars.json",lines:this.dir+"lines_latin.json",boundaries:this.dir+"boundaries.json",showers:this.dir+"showers.json",galaxy:this.dir+"galaxy.json",planets:this.dir+"virtualsky-planets.js"};this.hipparcos={};this.updateClock(new Date());this.fullsky=false;this.colours={normal:{txt:"rgb(255,255,255)",black:"rgb(0,0,0)",white:"rgb(255,255,255)",grey:"rgb(100,100,100)",stars:"rgb(255,255,255)",sun:"rgb(255,215,0)",moon:"rgb(150,150,150)",cardinal:"rgba(163,228,255, 1)",constellation:"rgba(180,180,255,0.8)",constellationboundary:"rgba(255,255,100,0.6)",showers:"rgba(100,255,100,0.8)",galaxy:"rgba(100,200,255,0.5)",az:"rgba(100,100,255,0.4)",eq:"rgba(255,100,100,0.4)",ec:"rgba(255,0,0,0.4)",gal:"rgba(100,200,255,0.4)",meridian:"rgba(25,255,0,0.4)",pointers:"rgb(200,200,200)"},negative:{txt:"rgb(0,0,0)",black:"rgb(0,0,0)",white:"rgb(255,255,255)",grey:"rgb(100,100,100)",stars:"rgb(0,0,0)",sun:"rgb(0,0,0)",moon:"rgb(0,0,0)",cardinal:"rgba(0,0,0,1)",constellation:"rgba(0,0,0,0.8)",constellationboundary:"rgba(0,0,0,0.6)",showers:"rgba(0,0,0,0.8)",galaxy:"rgba(0,0,0,0.5)",az:"rgba(0,0,255,0.6)",eq:"rgba(255,100,100,0.8)",ec:"rgba(255,0,0,0.6)",gal:"rgba(100,200,255,0.8)",meridian:"rgba(0,255,0,0.6)"}};this.input=input;this.init(input);this.language=(typeof this.q.lang==="string")?this.q.lang:(typeof this.setlang==="string"?this.setlang:(navigator)?(navigator.userLanguage||navigator.systemLanguage||navigator.language||browser.language):"");var fromqs=(typeof this.q.lang==="string"||typeof this.setlang==="string");this.langs={ar:{language:{name:"العربية",alignment:"right"}},cs:{language:{name:"Čeština",alignment:"left"}},en:{language:{name:"English",alignment:"left"}},es:{language:{name:"Español",alignment:"left"}},fr:{language:{name:"Français",alignment:"left"}},it:{language:{name:"Italiano",alignment:"left"}},pt:{language:{name:"Português",alignment:"left"}},};this.lang=this.langs.en;if(typeof this.polartype=="undefined"){this.selectProjection("polar")}this.updateColours();this.loadLanguage(this.language,"",fromqs);var v,a,b,r,s,p,k,c;v=".virtualsky";a="#f0f0f0";b="#fcfcfc";k="background";c=k+"-color";p="padding";this.padding=4;bs="box-shadow:0px 0px 20px rgba(255,255,255,0.5);";function br(i){return"border-radius:"+i+";-moz-border-radius:"+i+";-webkit-border-radius:"+i+";"}r=br("0em");s=br("3px");S("head").append('");this.pointers=[];this.dragging=false;this.x="";this.y="";this.theta=0;this.skygrad;this.infobox="virtualsky_infobox";this.container="";this.times=this.astronomicalTimes();if(this.id){this.createSky()}p=this.moonPos(this.times.JD);this.moon=p.moon;this.sun=p.sun;if(this.islive){interval=window.setInterval(function(sky){sky.setClock("now")},1000,this)}return this}VirtualSky.prototype.init=function(d){if(!d){return this}var q=location.search;if(q&&q!="#"){var bits=q.replace(/^\?|\&$/g,"").split("&");var key,val;for(var i=0;i0?l.substring(0,l.indexOf("-")):l.substring(0,2));if(fromquerystring){lang=l}else{if(this.langs[l]){lang=l}}}l=lang;if(!l){l="en"}var url=this.langurl.replace("%LANG%",l);this.loadJSON(url,function(data){this.langcode=l;this.langs[l]=data;this.langs[l].loaded=true;if(data.starnames){for(var n in data.starnames){this.starnames[n]=data.starnames[n]}}this.changeLanguage(l);if(typeof fn==="function"){fn.call(this)}},function(data){},function(e){this.loadLanguage("en",fn)});return this};VirtualSky.prototype.changeLanguage=function(code,fn){if(this.langs[code]){if(!this.langs[code].loaded){this.loadLanguage(code,fn)}else{this.lang=this.langs[code];this.langcode=code;this.draw();if(typeof fn==="function"){fn.call(this)}}return this}this.lang=this.langs.en;return this};VirtualSky.prototype.htmlDecode=function(input){if(!input){return""}var e=document.createElement("div");e.innerHTML=input;return e.childNodes[0].nodeValue};VirtualSky.prototype.getPhrase=function(key,key2){if(key===undefined){return undefined}if(key==="constellations"){if(key2&&is(this.lang.constellations[key2],"string")){return this.htmlDecode(this.lang.constellations[key2])}}else{if(key==="planets"){if(this.lang.planets&&this.lang.planets[key2]){return this.htmlDecode(this.lang.planets[key2])}else{return this.htmlDecode(this.lang[key2])}}else{return this.htmlDecode(this.lang[key])||this.htmlDecode(this.langs.en[key])||""}}};VirtualSky.prototype.resize=function(w,h){if(!this.canvas){return}if(!w||!h){if(this.fullscreen){this.canvas.css({width:0,height:0});w=window.innerWidth;h=window.innerHeight;this.canvas.css({width:w+"px",height:h+"px"})}else{this.canvas.css({width:0,height:0});w=this.container.outerWidth();h=this.container.outerHeight();this.canvas.css({width:w+"px",height:h+"px"})}}if(w==this.wide&&h==this.tall){return}this.setWH(w,h);this.positionCredit();this.updateSkyGradient();this.draw();this.container.css({"font-size":this.fontsize()+"px"});this.trigger("resize",{vs:this})};VirtualSky.prototype.setWH=function(w,h){if(!w||!h){return}this.c.width=w;this.c.height=h;this.wide=w;this.tall=h;this.changeFOV();this.canvas.css({width:w+"px",height:h+"px"})};VirtualSky.prototype.changeFOV=function(delta){var fov=this.fov;if(delta>0){fov/=1.05}else{if(delta<0){fov*=1.05}}return this.setFOV(fov)};VirtualSky.prototype.setFOV=function(fov){if(fov>60||typeof fov!=="number"){this.fov=60}else{if(fov<1){this.fov=1}else{this.fov=fov}}this.maxangle=this.d2r*this.fov*Math.max(this.wide,this.tall)/this.tall;this.maxangle=Math.min(this.maxangle,Math.PI/2);return this};VirtualSky.prototype.hide=function(){this.container.hide();return this};VirtualSky.prototype.show=function(){this.container.show();return this};VirtualSky.prototype.toggle=function(){this.container.toggle();return this};VirtualSky.prototype.convertStarsToRadians=function(stars){for(var i=0;i'+msg+" ");setTimeout(function(){S("#"+id).remove()},1000)}return this};VirtualSky.prototype.checkLoaded=function(){if(!this.planets&&this.showplanets){this.load("planets",this.file.planets)}if(!this.lines&&this.constellation.lines){this.load("lines",this.file.lines)}if(!this.boundaries&&this.constellation.boundaries){this.load("boundaries",this.file.boundaries)}if(!this.showers&&this.meteorshowers){this.load("showers",this.file.showers)}if(!this.galaxy&&this.showgalaxy){this.load("galaxy",this.file.galaxy)}return this};VirtualSky.prototype.createSky=function(){this.container=S("#"+this.id);this.times=this.astronomicalTimes();if(this.q.debug){S("body").append('
')}if(this.fntfam){this.container.css({"font-family":this.fntfam})}if(this.fntsze){this.container.css({"font-size":this.fntsze})}if(this.container.length==0){S("body").append('
');this.container=$("#"+this.id)}this.container.css("position","relative");var _obj=this;window.onresize=function(){_obj.resize()};this.checkLoaded();this.changeMagnitude(0);if(this.objects){var ob=this.objects.split(";");for(var o=0;o=0)?{url:ob[o],src:"file",type:"json"}:{url:"https://www.strudel.org.uk/lookUP/json/?name="+ob[o],src:"lookup",type:"jsonp"})}var lookups=0;var ok=true;for(var o=0;o5){ok=false}if(ok||ob[o].src!="lookup"){S(document).ajax(ob[o].url,{dataType:ob[o].type,"this":this,success:function(data){if(typeof data.length==="undefined"){data=[data]}for(var i=0;i0){this.container.css("width",this.wide+"px")}this.wide=this.container.width();if(this.tall>0){this.container.css("height",this.tall+"px")}this.tall=this.container.height()-0;this.idinner=this.id+"_inner";this.container.html('');this.canvas=S("#"+this.idinner);this.c=document.getElementById(this.idinner);if(this.excanvas){this.c=G_vmlCanvasManager.initElement(this.c)}if(this.c&&this.c.getContext){this.setWH(this.wide,this.tall);var ctx=this.ctx=this.c.getContext("2d");ctx.clearRect(0,0,this.wide,this.tall);ctx.beginPath();var fs=this.fontsize();ctx.font=fs+"px Helvetica";ctx.fillStyle="rgb(0,0,0)";ctx.lineWidth=1.5;var loading="Loading sky...";ctx.fillText(loading,(ctx.wide-ctx.measureText(loading).width)/2,(this.tall-fs)/2);ctx.fill();S("#"+this.idinner).on("click",{sky:this},function(e){e.data.sky.debug("click");var x=e.originalEvent.pageX-this.offset().left-window.scrollX;var y=e.originalEvent.pageY-this.offset().top-window.scrollY;matched=e.data.sky.whichPointer(x,y);e.data.sky.toggleInfoBox(matched);if(matched>=0){S(e.data.sky.canvas).css({cursor:"pointer"})}}).on("dblclick",{sky:this},function(e){e.data.sky.debug("dblclick");e.data.sky.toggleFullScreen()}).on("mousemove",{sky:this},function(e){e.preventDefault();e.data.sky.debug("mousemove");var s=e.data.sky;var x=e.originalEvent.layerX;var y=e.originalEvent.layerY;var theta,f,dr;if(s.mouse){s.canvas.css({cursor:"move"})}if(s.dragging&&s.mouse){if(s.polartype){theta=Math.atan2(y-s.tall/2,x-s.wide/2);if(!s.theta){s.theta=theta}s.az_off-=(s.theta-theta)*s.r2d;s.theta=theta}else{if(s.projection.id=="gnomic"){f=0.0015*(s.fov*s.d2r);dr=0;if(typeof s.x=="number"){dr=Math.min(Math.abs(s.x-x)*f/(Math.cos(s.dc_off)),Math.PI/36)}if(typeof s.y=="number"){s.dc_off-=(s.y-y)*f}s.ra_off-=(s.x-x>0?1:-1)*dr;s.dc_off=inrangeEl(s.dc_off)}else{if(typeof s.x=="number"){s.az_off+=(s.x-x)/4}}}s.az_off=s.az_off%360;s.x=x;s.y=y;s.draw();s.canvas.css({cursor:"-moz-grabbing"})}else{matched=s.whichPointer(x,y);s.toggleInfoBox(matched)}}).on("mousedown",{sky:this},function(e){e.data.sky.debug("mousedown");e.data.sky.dragging=true}).on("mouseup",{sky:this},function(e){e.data.sky.debug("mouseup");var s=e.data.sky;s.dragging=false;s.x="";s.y="";s.theta=""}).on("mouseout",{sky:this},function(e){e.data.sky.debug("mouseout");var s=e.data.sky;s.dragging=false;s.mouseover=false;s.x="";s.y="";if(typeof s.callback.mouseout=="function"){s.callback.mouseout.call(s)}}).on("mouseenter",{sky:this},function(e){e.data.sky.debug("mouseenter");var s=e.data.sky;s.mouseover=true;if(typeof s.callback.mouseenter=="function"){s.callback.mouseenter.call(s)}}).on("touchmove",{sky:this},function(e){e.preventDefault();var s=e.data.sky;var x=e.originalEvent.touches[0].pageX;var y=e.originalEvent.touches[0].pageX;e.data.sky.debug("touchmove "+x+","+y+" "+s.x+","+s.y+"");var theta,f,dr;if(s.dragging){if(s.polartype){theta=Math.atan2(y-s.tall/2,x-s.wide/2);if(!s.theta){s.theta=theta}s.az_off-=(s.theta-theta)*s.r2d;s.theta=theta}else{if(s.projection.id=="gnomic"){f=0.0015*(s.fov*s.d2r);dr=0;if(typeof s.x=="number"){dr=Math.min(Math.abs(s.x-x)*f/(Math.cos(s.dc_off)),Math.PI/36)}if(typeof s.y=="number"){s.dc_off-=(s.y-y)*f}s.ra_off-=(s.x-x>0?1:-1)*dr;s.dc_off=inrangeEl(s.dc_off)}else{if(typeof s.x=="number"){s.az_off+=(s.x-x)/4}}}s.az_off=s.az_off%360;s.x=x;s.y=y;s.draw()}}).on("touchstart",{sky:this},function(e){e.data.sky.debug("touchstart");e.data.sky.dragging=true}).on("touchend",{sky:this},function(e){e.data.sky.debug("touchend");e.data.sky.dragging=false;e.data.sky.x="";e.data.sky.y="";e.data.sky.theta=""}).on((isEventSupported("mousewheel")?"mousewheel":"wheel"),{sky:this},function(e){e.preventDefault();e.data.sky.debug("mousewheel");var delta=-(e.originalEvent.deltaY||e.originalEvent.wheelDelta);if(!delta){delta=0}var s=e.data.sky;if(s.mouse&&s.projection.id=="gnomic"){s.changeFOV(delta).draw();return false}else{return true}});S(document).on("keypress",{sky:this},function(ev,b){if(!ev){ev=window.event}e=ev.originalEvent;var code=e.keyCode||e.charCode||e.which||0;ev.data.sky.keypress(code,ev.originalEvent)})}this.registerKey("a",function(){this.toggleAtmosphere()},"atmos");this.registerKey("g",function(){this.toggleGround()},"ground");this.registerKey("h",function(){this.cycleProjection()},"projection");this.registerKey("i",function(){this.toggleNegative()},"neg");this.registerKey(",",function(){this.toggleEcliptic()},"ec");this.registerKey(";",function(){this.toggleMeridian()},"meridian");this.registerKey("e",function(){this.toggleGridlinesEquatorial()},"eq");this.registerKey("z",function(){this.toggleGridlinesAzimuthal()},"az");this.registerKey("m",function(){this.toggleGridlinesGalactic()},"gal");this.registerKey("M",function(){this.toggleGalaxy()},"galaxy");this.registerKey("q",function(){this.toggleCardinalPoints()},"cardinal");this.registerKey("s",function(){this.toggleStars()},"stars");this.registerKey("S",function(){this.toggleStarLabels()},"starlabels");this.registerKey("u",function(){this.togglePlanetLabels()},"sollabels");this.registerKey("p",function(){this.togglePlanetHints()},"sol");this.registerKey("o",function(){this.toggleOrbits()},"orbits");this.registerKey("c",function(){this.toggleConstellationLines()},"con");this.registerKey("v",function(){this.toggleConstellationLabels()},"names");this.registerKey("b",function(){this.toggleConstellationBoundaries()},"conbound");this.registerKey("R",function(){this.toggleMeteorShowers()},"meteorshowers");this.registerKey("1",function(){this.toggleHelp()});this.registerKey("8",function(){this.setClock("now").calendarUpdate()},"reset");this.registerKey("j",function(){if(!this.islive){this.spinIt("down")}},"slow");this.registerKey("k",function(){this.spinIt(0)},"stop");this.registerKey("l",function(){if(!this.islive){this.spinIt("up")}},"fast");this.registerKey("-",function(){this.setClock(-86400).calendarUpdate()},"subtractday");this.registerKey("=",function(){this.setClock(86400).calendarUpdate()},"addday");this.registerKey("[",function(){this.setClock(-86400*7).calendarUpdate()},"subtractweek");this.registerKey("]",function(){this.setClock(86400*7).calendarUpdate()},"addweek");this.registerKey(37,function(){this.az_off-=2;this.draw()},"azleft");this.registerKey(39,function(){this.az_off+=2;this.draw()},"azright");this.registerKey(38,function(){this.changeMagnitude(0.25)},"magup");this.registerKey(40,function(){this.changeMagnitude(-0.25)},"magdown");this.registerKey(63,function(){this.toggleHelp()});this.draw()};VirtualSky.prototype.changeMagnitude=function(m){if(typeof m!=="number"){return this}this.magnitude+=m;if(!this.starsdeep&&this.magnitude>4){this.load("stars",this.file.stars)}else{this.draw()}return this};VirtualSky.prototype.toggleHelp=function(){var v="virtualsky";if(S("."+v+"_dismiss").length>0){S("."+v+"_dismiss").trigger("click")}else{var o="";for(var i=0;i'+this.keys[i].str+' → '+this.getPhrase(this.keys[i].txt)+""}}this.container.append('
×
'+this.getPhrase("keyboard")+'
    ');var hlp=S("."+v+"_help");var h=hlp.outerHeight();hlp.find("ul").html(o);S("."+v+"_helpinner").css({overflow:"auto","max-height":(this.tall-h)+"px"});for(var i=0;i=this.pointers.length||(i>=0&&!this.pointers[i].html)){return this}if(S("#"+this.id+"_"+this.infobox).length<=0){this.container.append('')}var el=S("#"+this.id+"_"+this.infobox);if(i>=0&&this.isVisible(this.pointers[i].el)&&this.pointers[i].x>0&&this.pointers[i].y>0&&this.pointers[i].x0){az=2*Math.PI-az}return[alt,az]};function inrangeAz(a,deg){if(deg){while(a<0){a+=360}while(a>360){a-=360}}else{var twopi=(2*Math.PI);while(a<0){a+=twopi}while(a>twopi){a-=twopi}}return a}function inrangeEl(a,deg){if(deg){if(a>=90){a=89.99999}if(a<=-90){a=-89.99999}}else{if(a>=Math.PI/2){a=(Math.PI/2)*0.999999}if(a<=-Math.PI/2){a=(-Math.PI/2)*0.999999}}return a}VirtualSky.prototype.selectProjection=function(proj){if(this.projections[proj]){this.projection=this.projections[proj];this.projection.id=proj;this.fullsky=this.projection.fullsky==true;this.polartype=this.projection.polartype==true;if(typeof this.projection.azel2xy==="function"){this.azel2xy=this.projection.azel2xy}else{this.azel2xy=function(az,el,w,h){if(!w){w=this.wide}if(!h){h=this.tall}if(az<0){az+=360}return{x:-1,y:-1,el:-1}}}if(typeof this.projection.azel2radec==="function"){this.azel2radec=this.projection.azel2radec}else{this.azel2radec=function(az,el){var xt,yt,r,l;l=this.latitude;xt=Math.asin(Math.sin(el)*Math.sin(l)+Math.cos(el)*Math.cos(l)*Math.cos(az));r=(Math.sin(el)-Math.sin(l)*Math.sin(xt))/(Math.cos(l)*Math.cos(xt));if(r>1){r=1}yt=Math.acos(r);if(Math.sin(az)>0){yt=Math.PI*2-yt}xt*=this.r2d;yt*=this.r2d;yt=(this.times.LST*15-yt+360)%360;return{ra:yt,dec:xt}}}if(this.ctx){this.updateSkyGradient()}this.updateColours();if(this.container){var w=this.container.width();var h=this.container.height();var s=(this.lang.projections&&this.lang.projections[proj])?this.lang.projections[proj]:this.projections[proj].title;if(S("."+this.id+"_projection").length>0){S("."+this.id+"_projection").remove()}this.container.append('
    '+s+"
    ");var elem=S("."+this.id+"_projection");elem.on("mouseover",{me:this},function(e){e.data.me.mouseover=true}).css({position:"absolute",padding:0,width:w+"px",height:h+"px",top:"0px",left:"0px","text-align":"center","line-height":h+"px","z-index":20,"font-size":"1.5em",display:"block",overflow:"hidden","background-color":"transparent",color:(this.negative?this.col.black:this.col.white),opacity:1});setTimeout(function(e){e.fadeOut(1000,function(){this.remove()})},500,elem)}}};VirtualSky.prototype.cycleProjection=function(){var usenext=false;var proj=this.projection.id;var i=0;var firstkey;for(var key in this.projections){if(i==0){firstkey=key}if(usenext){proj=key;break}if(key==this.projection.id){usenext=true}i++}if(proj==this.projection.id){proj=firstkey}this.draw(proj)};VirtualSky.prototype.updateColours=function(){this.col=JSON.parse(JSON.stringify(((this.negative)?this.colours.negative:this.colours.normal)));if(this.color==""){if((this.polartype||this.projection.altlabeltext)){this.col.txt=this.col.grey}}else{this.col.txt=this.color}};VirtualSky.prototype.isVisible=function(el){if(typeof this.projection.isVisible==="function"){return this.projection.isVisible.call(el)}if(!this.fullsky){return(el>0)}else{return(this.ground)?(el>0):true}};VirtualSky.prototype.isPointBad=function(p){return p.x==-1&&p.y==-1};VirtualSky.prototype.astronomicalTimes=function(clock,lon){clock=clock||this.clock;lon=lon||this.longitude*this.r2d;var JD,JD0,S,T,T0,UT,A,GST,d,LST;JD=this.getJD(clock);JD0=Math.floor(JD-0.5)+0.5;S=JD0-2451545;T=S/36525;T0=(6.697374558+(2400.051336*T)+(0.000025862*T*T))%24;if(T0<0){T0+=24}UT=(((clock.getUTCMilliseconds()/1000+clock.getUTCSeconds())/60)+clock.getUTCMinutes())/60+clock.getUTCHours();A=UT*1.002737909;T0+=A;GST=T0%24;if(GST<0){GST+=24}d=(GST+lon/15)/24;d=d-Math.floor(d);if(d<0){d+=1}LST=24*d;return{GST:GST,LST:LST,JD:JD}};VirtualSky.prototype.moonPos=function(JD,sun){var d2r,JD,sun,lo,Po,No,i,e,l,Mm,N,C,Ev,sinMo,Ae,A3,Mprimem,Ec,A4,lprime,V,lprimeprime,Nprime,lppNp,sinlppNp,y,x,lm,Bm;d2r=this.d2r;JD=JD||this.times.JD;sun=sun||this.sunPos(JD);lo=91.929336;Po=130.143076;No=291.682547;i=5.145396;e=0.0549;l=(13.1763966*sun.D+lo)%360;if(l<0){l+=360}Mm=(l-0.1114041*sun.D-Po)%360;if(Mm<0){Mm+=360}N=(No-0.0529539*sun.D)%360;if(N<0){N+=360}C=l-sun.lon;Ev=1.2739*Math.sin((2*C-Mm)*d2r);sinMo=Math.sin(sun.Mo*d2r);Ae=0.1858*sinMo;A3=0.37*sinMo;Mprimem=Mm+Ev-Ae-A3;Ec=6.2886*Math.sin(Mprimem*d2r);A4=0.214*Math.sin(2*Mprimem*d2r);lprime=l+Ev+Ec-Ae+A4;V=0.6583*Math.sin(2*(lprime-sun.lon)*d2r);lprimeprime=lprime+V;Nprime=N-0.16*sinMo;lppNp=(lprimeprime-Nprime)*d2r;sinlppNp=Math.sin(lppNp);y=sinlppNp*Math.cos(i*d2r);x=Math.cos(lppNp);lm=Math.atan2(y,x)/d2r+Nprime;Bm=Math.asin(sinlppNp*Math.sin(i*d2r))/d2r;if(lm>360){lm-=360}return{moon:{lon:lm,lat:Bm},sun:sun}};VirtualSky.prototype.sunPos=function(JD){var D,eg,wg,e,N,Mo,v,lon,lat;D=(JD-2455196.5);eg=279.557208;wg=283.112438;e=0.016705;N=((360/365.242191)*D)%360;if(N<0){N+=360}Mo=(N+eg-wg)%360;if(Mo<0){Mo+=360}v=Mo+(360/Math.PI)*e*Math.sin(Mo*Math.PI/180);lon=v+wg;if(lon>360){lon-=360}lat=0;return{lat:lat,lon:lon,Mo:Mo,D:D,N:N}};VirtualSky.prototype.meanObliquity=function(JD){if(!JD){JD=this.times.JD}var T,T2,T3;T=(JD-2451545)/36525;T2=T*T;T3=T2*T;return(23.4392917-0.0130041667*T-1.6667e-7*T2+5.027778e-7*T3)*this.d2r};VirtualSky.prototype.ecliptic2azel=function(l,b,LST,lat){if(!LST){this.times=this.astronomicalTimes();LST=this.times.LST}if(!lat){lat=this.latitude}var sl,cl,sb,cb,v,e,ce,se,Cprime,s,ST,cST,sST,B,r,sphi,cphi,A,w,theta,psi;sl=Math.sin(l);cl=Math.cos(l);sb=Math.sin(b);cb=Math.cos(b);v=[cl*cb,sl*cb,sb];e=this.meanObliquity();ce=Math.cos(e);se=Math.sin(e);Cprime=[[1,0,0],[0,ce,-se],[0,se,ce]];s=this.vectorMultiply(Cprime,v);ST=LST*15*this.d2r;cST=Math.cos(ST);sST=Math.sin(ST);B=[[cST,sST,0],[sST,-cST,0],[0,0,1]];r=this.vectorMultiply(B,s);sphi=Math.sin(lat);cphi=Math.cos(lat);A=[[-sphi,0,cphi],[0,-1,0],[cphi,0,sphi]];w=this.vectorMultiply(A,r);theta=Math.atan2(w[1],w[0]);psi=Math.asin(w[2]);return{az:theta,el:psi}};VirtualSky.prototype.ecliptic2radec=function(l,b,JD){var e=this.meanObliquity();var sl=Math.sin(l);var cl=Math.cos(l);var sb=Math.sin(b);var cb=Math.cos(b);var tb=Math.tan(b);var se=Math.sin(e);var ce=Math.cos(e);ra=Math.atan2((sl*ce-tb*se),(cl));dec=Math.asin(sb*ce+cb*se*sl);if(ra<0){ra+=Math.PI+Math.PI}return{ra:ra,dec:dec}};VirtualSky.prototype.ecliptic2xy=function(l,b,LST){LST=LST||this.times.LST;if(typeof this.projection.ecliptic2xy==="function"){return this.projection.ecliptic2xy.call(this,l,b,LST)}else{if(this.fullsky){var pos=this.ecliptic2radec(l,b);return this.radec2xy(pos.ra,pos.dec)}else{var pos=this.ecliptic2azel(l,b,LST);var el=pos.el*this.r2d;pos=this.azel2xy(pos.az-(this.az_off*this.d2r),pos.el,this.wide,this.tall);pos.el=el;return pos}}return 0};VirtualSky.prototype.radec2xy=function(ra,dec){if(typeof this.projection.radec2xy==="function"){return this.projection.radec2xy.call(this,ra,dec)}else{var coords=this.coord2horizon(ra,dec);var pos=this.azel2xy(coords[1]-(this.az_off*this.d2r),coords[0],this.wide,this.tall);return{x:pos.x,y:pos.y,az:coords[1]*this.r2d,el:coords[0]*this.r2d}}return 0};VirtualSky.prototype.azel2xy=function(az,el,w,h){return{x:-1,y:-1}};VirtualSky.prototype.azel2radec=function(az,el){return{ra:0,dec:0}};VirtualSky.prototype.gal2xy=function(l,b){var pos=this.gal2radec(l,b);return this.radec2xy(pos[0],pos[1])};VirtualSky.prototype.gal2radec=function(l,b){return this.Transform([l,b],[-0.054875539726,0.494109453312,-0.867666135858,-0.87343710801,-0.444829589425,-0.198076386122,-0.483834985808,0.74698225181,0.455983795705],false)};VirtualSky.prototype.Transform=function(p,rot,indeg){if(indeg){p[0]*=this.d2r;p[1]*=this.d2r}var cp1=Math.cos(p[1]);var m=[Math.cos(p[0])*cp1,Math.sin(p[0])*cp1,Math.sin(p[1])];var s=[m[0]*rot[0]+m[1]*rot[1]+m[2]*rot[2],m[0]*rot[3]+m[1]*rot[4]+m[2]*rot[5],m[0]*rot[6]+m[1]*rot[7]+m[2]*rot[8]];var r=Math.sqrt(s[0]*s[0]+s[1]*s[1]+s[2]*s[2]);var b=Math.asin(s[2]/r);var cb=Math.cos(b);var a=Math.atan2(((s[1]/r)/cb),((s[0]/r)/cb));if(a<0){a+=Math.PI*2}if(indeg){return[a*this.r2d,b*this.r2d]}else{return[a,b]}};VirtualSky.prototype.fk1tofk5=function(a,b){return this.Transform([a,b],[0.9995358730015703,-0.02793693620138929,-0.012147682028606801,0.027936935758478665,0.9996096732234282,-0.00016976035344812515,0.012147683047201562,-0.00016968744936278707,0.9999261997781408])};VirtualSky.prototype.vectorMultiply=function(A,B){if(B.length>0){if(B[0].length>0){return[[(A[0][0]*B[0][0]+A[0][1]*B[1][0]+A[0][2]*B[2][0]),(A[0][0]*B[0][1]+A[0][1]*B[1][1]+A[0][2]*B[2][1]),(A[0][0]*B[0][2]+A[0][1]*B[1][2]+A[0][2]*B[2][2])],[(A[1][0]*B[0][0]+A[1][1]*B[1][0]+A[1][2]*B[2][0]),(A[1][0]*B[0][1]+A[1][1]*B[1][1]+A[1][2]*B[2][1]),(A[1][0]*B[0][2]+A[1][1]*B[1][2]+A[1][2]*B[2][2])],[(A[2][0]*B[0][0]+A[2][1]*B[1][0]+A[2][2]*B[2][0]),(A[2][0]*B[0][1]+A[2][1]*B[1][1]+A[2][2]*B[2][1]),(A[2][0]*B[0][2]+A[2][1]*B[1][2]+A[2][2]*B[2][2])]]}else{return[(A[0][0]*B[0]+A[0][1]*B[1]+A[0][2]*B[2]),(A[1][0]*B[0]+A[1][1]*B[1]+A[1][2]*B[2]),(A[2][0]*B[0]+A[2][1]*B[1]+A[2][2]*B[2])]}}};VirtualSky.prototype.setFont=function(){this.ctx.font=this.fontsize()+"px "+this.canvas.css("font-family")};VirtualSky.prototype.fontsize=function(){if(this.fntsze){return parseInt(this.fntsze)}var m=Math.min(this.wide,this.tall);return(m<600)?((m<500)?((m<350)?((m<300)?((m<250)?9:10):11):12):14):parseInt(this.container.css("font-size"))};VirtualSky.prototype.positionCredit=function(){this.container.find("."+this.id+"_credit").css({position:"absolute",top:(parseFloat(this.tall)-this.padding-this.fontsize())+"px",left:this.padding+"px"})};VirtualSky.prototype.updateSkyGradient=function(){var s=null;if(this.ctx&&this.hasGradient()){if(this.projection.polartype){if(typeof this.ctx.createRadialGradient==="function"){s=this.ctx.createRadialGradient(this.wide/2,this.tall/2,0,this.wide/2,this.tall/2,this.tall/2);s.addColorStop(0,"rgba(0,0,0,1)");s.addColorStop(0.7,"rgba(0,0,0,0.2)");s.addColorStop(1,"rgba(0,50,80,0.3)")}}else{s=this.ctx.createLinearGradient(0,0,0,this.tall);s.addColorStop(0,"rgba(0,30,50,0.1)");s.addColorStop(0.7,"rgba(0,30,50,0.35)");s.addColorStop(1,"rgba(0,50,80,0.6)")}}this.skygrad=s;return this};VirtualSky.prototype.draw=function(proj){if(this.wide<=0||this.tall<=0){return this}if(!(this.c&&this.c.getContext)){return this}if(proj!==undefined){this.selectProjection(proj)}var white=this.col.white;var black=this.col.black;var c=this.ctx;var d=this.container;c.moveTo(0,0);c.clearRect(0,0,this.wide,this.tall);c.fillStyle=(this.polartype||this.fullsky)?this.background:((this.negative)?white:black);c.fillRect(0,0,this.wide,this.tall);c.fill();if(this.polartype){c.moveTo(this.wide/2,this.tall/2);c.closePath();c.beginPath();c.arc(this.wide/2,this.tall/2,-0.5+this.tall/2,0,Math.PI*2,true);c.closePath();if(!this.transparent){c.fillStyle=(this.hasGradient())?"rgba(0,15,30, 1)":((this.negative)?white:black);c.fill()}c.lineWidth=0.5;c.strokeStyle=black;c.stroke()}else{if(typeof this.projection.draw==="function"){this.projection.draw.call(this)}}if(this.hasGradient()){if(this.skygrad===undefined){this.updateSkyGradient()}else{c.beginPath();c.fillStyle=this.skygrad;if(this.projection.polartype){c.arc(this.wide/2,this.tall/2,this.tall/2,0,2*Math.PI,false);c.fill()}else{c.fillRect(0,0,this.wide,this.tall)}c.closePath()}}this.startClip().drawGridlines("az").drawGridlines("eq").drawGridlines("gal").drawGalaxy().drawConstellationLines().drawConstellationBoundaries().drawStars().drawEcliptic().drawMeridian().drawPlanets().drawMeteorShowers().endClip().drawCardinalPoints();for(var i=0;i0)?this.getPhrase("N"):this.getPhrase("S"))+", "+Math.abs(this.longitude*this.r2d).toFixed(2)+((this.longitude>0)?this.getPhrase("E"):this.getPhrase("W"));var metric_pos=this.drawText(positionstring,this.padding,this.padding+fontsize+fontsize)}if(this.credit){var credit=this.getPhrase("power");var metric_credit=this.drawText(credit,this.padding,this.tall-this.padding);if(d.find("."+this.id+"_credit").length==0){d.append('
    '+this.getPhrase("powered")+"
    ")}d.find("."+this.id+"_credit").css({padding:0,"z-index":20,display:"block",overflow:"hidden","background-color":"transparent"});d.find("."+this.id+"_credit a").css({display:"block",width:Math.ceil(metric_credit)+"px",height:fontsize+"px"});this.positionCredit()}if(this.showhelp){var helpstr="?";if(d.find("."+this.id+"_help").length==0){d.append('
    '+helpstr+"
    ").find("."+this.id+"_help").css({position:"absolute",padding:this.padding+"px","z-index":20,display:"block",overflow:"hidden","background-color":"transparent",right:0+"px",top:0+"px"}).find("a").css({"text-decoration":"none",color:txtcolour}).on("click",{me:this},function(e){e.data.me.toggleHelp()})}d.find("."+this.id+"_help").find("a").css({color:txtcolour})}if(this.container.find("."+this.id+"_btn_help").length==0){this.container.append('
    ?
    ');var off=S("#"+this.idinner).position();this.container.find("."+this.id+"_btn_help").css({position:"absolute",top:(off.top+this.padding)+"px",right:this.padding+"px","z-index":20}).on("click",{me:this},function(e){e.data.me.toggleHelp()})}if(this.container.find("."+this.id+"_clock").length==0){this.container.append('
    '+clockstring+"
    ");var off=S("#"+this.idinner).position();this.container.find("."+this.id+"_clock").css({position:"absolute",padding:0+"px",width:Math.round(metric_clock)+"px",cursor:"pointer",top:(off.top+this.padding)+"px",left:(off.left+this.padding)+"px","z-index":20,display:"block",overflow:"hidden","background-color":"transparent",color:"transparent"}).on("click",{sky:this},function(e){var s=e.data.sky;var id=s.id;var hid="#"+id;var v="virtualsky";if(S(hid+"_calendar").length==0){var off=S(hid).offset();var w=280;var h=50;if(s.wide
    ×
    '+s.getPhrase("date")+'
    ');S(hid+"_calendar").css({width:w});S(hid+"_calendar input").on("change",{sky:s},function(e){d=S("#"+id+"_date").val();t=S("#"+id+"_time").val();e.data.sky.updateClock(new Date(parseInt(d.substr(0,4)),parseInt(d.substr(5,2))-1,parseInt(d.substr(8,2)),parseInt(t.substr(0,2)),parseInt(t.substr(3,2)),0,0));e.data.sky.calendarUpdate();e.data.sky.draw()})}s.createLightbox(S(hid+"_calendar"));S(hid+"_year").val(s.clock.getFullYear());S(hid+"_month").val(s.clock.getMonth()+1);S(hid+"_day").val(s.clock.getDate());S(hid+"_hours").val(s.clock.getHours());S(hid+"_mins").val(s.clock.getMinutes())})}if(S("."+this.id+"_position").length==0){this.container.append('
    '+positionstring+"
    ");S("."+this.id+"_position").on("click",{sky:this},function(e){var s=e.data.sky;var id=s.id;var hid="#"+id;var v="virtualsky";if(S(hid+"_geo").length==0){var w=310;var narrow="";if(s.wide';w=w/2}s.container.append('
    ×
    '+s.getPhrase("position")+'
    '+s.getPhrase("N")+"
    "+narrow+'
    '+s.getPhrase("E")+"
    ");S(hid+"_geo").css({width:w+"px",align:"center"});S(hid+"_geo input").css({width:"6em"})}s.createLightbox(S(hid+"_geo"),{close:function(e){if(this.vs){this.vs.setGeo(S(hid+"_lat").val()+","+S(hid+"_long").val()).setClock(0).draw()}}});S(hid+"_lat").val(s.latitude*s.r2d);S(hid+"_long").val(s.longitude*s.r2d);if(typeof s.callback.geo=="function"){s.callback.geo.call(s)}})}var off=S("#"+this.idinner).position();S("."+this.id+"_position").css({position:"absolute",padding:0,width:Math.round(metric_pos)+"px",cursor:"pointer",top:(off.top+this.padding+fontsize)+"px",left:(off.left+this.padding)+"px","z-index":20,display:"block",overflow:"hidden","background-color":"transparent",color:"transparent"});return this};VirtualSky.prototype.startClip=function(){if(this.polartype){this.ctx.save();this.ctx.beginPath();this.ctx.arc(this.wide/2,this.tall/2,-0.5+this.tall/2,0,Math.PI*2,true);this.ctx.clip()}return this};VirtualSky.prototype.endClip=function(){if(this.polartype){this.ctx.restore()}return this};VirtualSky.prototype.createLightbox=function(lb,opts){if(!lb.length){return this}if(!opts){opts={}}function Lightbox(lb,vs,opts){this.lb=lb;this.vs=vs;this.opts=opts||{};var n="virtualsky_bg";if(this.vs.container.find("."+n).length==0){this.vs.container.append('
    ')}var bg=this.vs.container.find("."+n);bg.show();this.bg=bg;this.vs.container.find(".virtualsky_dismiss").on("click",{lb:this},function(e){e.data.lb.close()});bg.on("click",{lightbox:this},function(e){e.data.lightbox.close()});this.vs.on("resize",function(e){if(this.lightbox){this.lightbox.resize()}});this.resize();return this}Lightbox.prototype.resize=function(){function columize(wide,tall){lb.find("li").css({display:"inline-block","margin-left":"0px",width:"auto"});lb.find("ul").css({width:"auto"});lb.css({position:"relative"});w=lb.outerWidth();var bar=24;var li=lb.find("ul li");var mx=1;for(var i=0;imx){mx=S(li[i]).width()}}var n=Math.floor(w/(mx+bar));if(n>1){if(n>3){n=3}lb.find("li").css({width:(mx)+"px","margin-left":Math.floor(bar/2)+"px"});lb.find("li:nth-child("+n+"n+1)").css({"margin-left":"0px"})}else{lb.find("li").css({display:"block",width:"auto"})}lb.find("ul").css({width:"100%"}).parent().css({width:Math.min(w-bar,(mx+bar/2)*n+bar)+"px"});lb.css({"z-index":100,position:"absolute"});lb.css({left:Math.floor((wide-lb.outerWidth())/2)+"px",top:((tall-lb.height())/2)+"px"})}columize.call(this.vs.wide,this.vs.tall);this.lb.css({left:(Math.round(this.vs.wide-this.lb.outerWidth())/2)+"px",top:(Math.round(this.vs.tall-this.lb.outerHeight())/2)+"px"});return this};Lightbox.prototype.close=function(){if(typeof this.opts.close==="function"){this.opts.close.call(this)}this.lb.remove();this.bg.remove();this.vs.lightbox=null;return this};this.lightbox=new Lightbox(lb,this,opts);return this};VirtualSky.prototype.drawStars=function(){if(!this.showstars&&!this.showstarlabels){return this}var mag,i,j,p,d,atmos,fovf;var c=this.ctx;c.beginPath();c.fillStyle=this.col.stars;this.az_off=(this.az_off+360)%360;atmos=this.hasAtmos();fovf=Math.sqrt(30/this.fov);var f=1;if(this.negative){f*=1.4}if(typeof this.scalestars==="number"&&this.scalestars!=1){f*=this.scalestars}if(this.projection.id==="gnomic"){f*=fovf}for(i=0;i=0){pos_2=mini+1+4;pos_1=mini+1;fract=mindt/Math.abs(data[pos_2-1]-data[pos_1-1])}else{pos_2=mini+1;pos_1=mini+1-4;fract=(1+(mindt)/Math.abs(data[pos_2-1]-data[pos_1-1]))}if(pos_2>data.length||pos_1<0){dra=data[mini+1];ddec=data[mini+2];dmag=data[mini+3]}else{dra=(Math.abs(data[pos_2]-data[pos_1])>180)?(data[pos_1]+(data[pos_2]+360-data[pos_1])*fract)%360:(data[pos_1]+(data[pos_2]-data[pos_1])*fract)%360;ddec=data[pos_1+1]+(data[pos_2+1]-data[pos_1+1])*fract;dmag=data[pos_1+2]+(data[pos_2+2]-data[pos_1+2])*fract}return{ra:dra,dec:ddec,mag:dmag}};VirtualSky.prototype.drawPlanets=function(){if(!this.showplanets&&!this.showplanetlabels&&!this.showorbits){return this}if(!this.planets||this.planets.length<=0){return this}var ra,dec,mag,pos,p;var c=this.ctx;var oldjd=this.jd;this.jd=this.times.JD;var colour=this.col.grey;var maxl=this.maxLine();for(p=0;pthis.planets[p][2][0]&&this.jd0&&previous.y>0&&this.isVisible(point.el)){c.moveTo(previous.x,previous.y);if(Math.abs(point.x-previous.x)0){c.fillStyle=colour}c.lineWidth=1.5;var xoff=d;if((this.polartype)&&c.measureText){xoff=-c.measureText(label).width-3}if((this.polartype)&&x=0&&b>=0&&a1){move=(cbdone[atob]||cbdone[btoa]);if(typeof move==="undefined"){move=true}ra=(b[0]-a[0])%360;if(ra>180){ra=ra-360}if(ra<-180){ra=ra+360}dc=(b[1]-a[1]);n=(move)?5:2;if(ra/2>n){n=parseInt(ra)}if(dc/2>n){n=parseInt(dc)}dra=ra/n;ddc=dc/n;for(var i=1;i<=n;i++){ra=a[0]+(i*dra);if(ra<0){ra+=360}dc=a[1]+(i*ddc);d=this.fk1tofk5(ra*this.d2r,dc*this.d2r);points.push([d[0],d[1],move])}}cbdone[atob]=true;cbdone[btoa]=true;a=b}this.constellation.bpts[c]=points}posa=null;for(i=0;i<=points.length;i++){j=(i==points.length)?0:i;posb=this.radec2xy(points[j][0],points[j][1]);if(posa&&this.isVisible(posa.el)&&this.isVisible(posb.el)&&points[j][2]){if(!this.isPointBad(posa)&&!this.isPointBad(posb)){if(Math.abs(posa.x-posb.x)=maxl||dy>=maxl){this.ctx.moveTo(pb.x,pb.y)}this.ctx.lineTo(pb.x,pb.y)}else{this.ctx.moveTo(pb.x,pb.y)}}pa=pb}}this.gal.processed=true;this.ctx.stroke();return this};VirtualSky.prototype.drawMeteorShowers=function(colour){if(!this.meteorshowers||typeof this.showers==="string"){return this}if(!colour){colour=this.col.showers}var shower,pos,label,xoff,c,d,p,start,end,dra,ddc,f;c=this.ctx;c.beginPath();c.strokeStyle=colour;c.fillStyle=colour;c.lineWidth=(this.grid.lineWidth||0.75);var fs=this.fontsize();this.setFont();var y=this.clock.getFullYear();for(var s in this.showers){d=this.showers[s].date;p=this.showers[s].pos;start=new Date(y,d[0][0]-1,d[0][1]);end=new Date(y,d[1][0]-1,d[1][1]);if(start>end&&this.clockstart&&this.clock=minb;b-=step){old=joinpoint(this,"az",0,b,old,maxl)}c.stroke();return this};VirtualSky.prototype.drawGridlines=function(type,step,colour){if(!type||!this.grid[type]){return this}if(typeof colour!=="string"){colour=this.col[type]}if(typeof step!=="number"){step=this.grid.step}var maxb,minb,x,y,a,b,pos,c,oldx,oldy,bstep2,ra,dc;c=this.ctx;oldx=0;oldy=0;c.beginPath();c.strokeStyle=colour;c.lineWidth=(this.grid.lineWidth||1);bstep=2;if(type=="az"){maxb=(typeof this.projection.maxb==="number")?this.projection.maxb:90-bstep;minb=0}else{maxb=90-bstep;minb=-maxb}var maxl=this.maxLine(5);old={x:-1,y:-1,moved:false};step*=this.d2r;bstep*=this.d2r;minb*=this.d2r;maxb*=this.d2r;for(a=0;afontsize)?m.width/2:fontsize/2}else{r=fontsize/2}ang=(azs[i]-this.az_off)*this.d2r;if(this.polartype){f=(this.tall/2)-r*1.5;x=-f*Math.sin(ang);y=-f*Math.cos(ang);x=isFinite(x)?this.wide/2+x-r:0;y=isFinite(y)?this.tall/2+y+r:0}else{pos=this.azel2xy(ang,0,this.wide,this.tall);x=isFinite(pos.x)?pos.x-r:0;y=isFinite(pos.y)?pos.y-pt/2:0;if(x<0||x>this.wide-pt){x=-r}}if(x>0){c.fillText(d[i],x,y)}}c.fill();return this};VirtualSky.prototype.highlight=function(i,colour){var p=this.pointers[i];if(this.pointers[i].ra&&this.pointers[i].dec){colour=p.colour||colour||"rgba(255,0,0,1)";if(this.negative){colour=this.getNegative(colour)}var pos=this.radec2xy(p.ra*this.d2r,p.dec*this.d2r);var c=this.ctx;if(this.isVisible(pos.el)){p.az=pos.az;p.el=pos.el;p.x=pos.x;p.y=pos.y;c.fillStyle=colour;c.strokeStyle=colour;c.beginPath();c.fillRect(p.x-p.d/2,p.y-p.d/2,p.d,p.d);c.fill();this.drawLabel(p.x,p.y,p.d,colour,p.label)}}return this};function joinpoint(s,type,a,b,old,maxl){var x,y,show,c,pos;c=s.ctx;if(type=="az"){pos=s.azel2xy((a-s.az_off*s.d2r),b,s.wide,s.tall)}else{if(type=="eq"){pos=s.radec2xy(a,b)}else{if(type=="ec"){pos=s.ecliptic2xy(a,b,s.times.LST)}else{if(type=="gal"){pos=s.gal2xy(a,b)}}}}x=pos.x;y=pos.y;if(type=="az"){show=true}else{show=((s.isVisible(pos.el))?true:false)}if(show&&isFinite(x)&&isFinite(y)){if(type=="az"){if(!old.moved||Math.sqrt(Math.pow(old.x-x,2)+Math.pow(old.y-y,2))>s.tall/2){c.moveTo(x,y)}c.lineTo(x,y);old.moved=true}else{if(!old.moved||Math.sqrt(Math.pow(old.x-x,2)+Math.pow(old.y-y,2))>maxl){c.moveTo(x,y);old.moved=true}else{c.lineTo(x,y)}}old.x=x;old.y=y}return old}VirtualSky.prototype.maxLine=function(f){if(this.projection.id==="gnomic"){return this.tall}if(typeof f!=="number"){f=3}return this.tall/f};VirtualSky.prototype.setGeo=function(pos){if(typeof pos!=="string"){return this}pos=pos.split(",");this.setLatitude(pos[0]);this.setLongitude(pos[1]);return this};VirtualSky.prototype.setLatitude=function(l){this.latitude=inrangeEl(parseFloat(l)*this.d2r);return this};VirtualSky.prototype.setLongitude=function(l){this.longitude=parseFloat(l)*this.d2r;while(this.longitude<=-Math.PI){this.longitude+=2*Math.PI}while(this.longitude>Math.PI){this.longitude-=2*Math.PI}return this};VirtualSky.prototype.toggleFullScreen=function(){if(fullScreenApi.isFullScreen()){fullScreenApi.cancelFullScreen(this.container[0]);this.fullscreen=false;this.container.removeClass("fullscreen")}else{fullScreenApi.requestFullScreen(this.container[0]);this.fullscreen=true;this.container.addClass("fullscreen")}return this};VirtualSky.prototype.setRADec=function(r,d){return this.setRA(r).setDec(d)};VirtualSky.prototype.setRA=function(r){this.ra_off=(r%360)*this.d2r;return this};VirtualSky.prototype.setDec=function(d){this.dc_off=d*this.d2r;return this};VirtualSky.prototype.panTo=function(ra,dec,s){if(!s){s=1000}if(typeof ra!=="number"||typeof dec!=="number"){return this}this.panning={s:{ra:this.ra_off*this.r2d,dec:this.dc_off*this.r2d},e:{ra:ra,dec:dec},duration:s,start:new Date()};this.panning.dr=this.panning.e.ra-this.panning.s.ra;this.panning.dd=this.panning.e.dec-this.panning.s.dec;if(this.panning.dr>180){this.panning.dr=-(360-this.panning.dr)}if(this.panning.dr<-180){this.panning.dr=(360+this.panning.dr)}return this.panStep()};window.requestAnimFrame=(function(){return window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||function(callback){window.setTimeout(callback,1000/60)}})();VirtualSky.prototype.panStep=function(){var ra,dc;var now=new Date();var t=(now-this.panning.start)/this.panning.duration;ra=this.panning.s.ra+(this.panning.dr)*(t);dc=this.panning.s.dec+(this.panning.dd)*(t);if(t<1){this.setRADec(ra,dc).draw();var _obj=this;requestAnimFrame(function(){_obj.panStep()})}else{this.setRADec(this.panning.e.ra,this.panning.e.dec).draw()}return this};VirtualSky.prototype.liveSky=function(pos){this.islive=!this.islive;if(this.islive){interval=window.setInterval(function(sky){sky.setClock("now")},1000,this)}else{if(interval!==undefined){clearInterval(interval)}}return this};VirtualSky.prototype.start=function(){this.islive=true;if(interval!==undefined){clearInterval(interval)}interval=window.setInterval(function(sky){sky.setClock("now")},1000,this)};VirtualSky.prototype.stop=function(){this.islive=false;if(interval!==undefined){clearInterval(interval)}};VirtualSky.prototype.advanceTime=function(by,wait){if(by===undefined){this.updateClock(new Date())}else{by=parseFloat(by);if(!wait){wait=1000/this.fps}var fn=function(vs,by){vs.setClock(by)};clearInterval(this.interval_time);clearInterval(this.interval_calendar);this.interval_time=window.setInterval(fn,wait,this,by);this.interval_calendar=window.setInterval(function(vs){vs.calendarUpdate()},1000,this)}return this};VirtualSky.prototype.updateClock=function(d){this.clock=d;this.times=this.astronomicalTimes()};VirtualSky.prototype.calendarUpdate=function(){for(var e=0;e'+credit+''}this.pointers[i]=p}return(this.pointers.length)};VirtualSky.prototype.changeAzimuth=function(inc){this.az_off+=(typeof inc==="number")?inc:5;this.draw();return this};VirtualSky.prototype.moveIt=function(){this.timer_az=window.setTimeout(function(mysky){mysky.az_off+=mysky.az_step;mysky.draw();mysky.moveIt()},100,this);return this};VirtualSky.prototype.spinIt=function(tick,wait){if(typeof tick==="number"){this.spin=(tick==0)?0:(this.spin+tick)}else{var t=1/this.fps;var s=2;if(this.spin==0){this.spin=(tick=="up")?t:-t}else{if(Math.abs(this.spin)<1){s*=2}if(this.spin>0){this.spin=(tick=="up")?(this.spin*s):(this.spin/s)}else{if(this.spin<0){this.spin=(tick=="up")?(this.spin/s):(this.spin*s)}}if(this.spin-t){this.spin=0}}}if(this.interval_time!==undefined){clearInterval(this.interval_time)}if(this.spin!=0){this.advanceTime(this.spin,wait)}return this};VirtualSky.prototype.getOffset=function(el){var _x=0;var _y=0;while(el&&!isNaN(el.offsetLeft)&&!isNaN(el.offsetTop)){_x+=el.offsetLeft-el.scrollLeft;_y+=el.offsetTop-el.scrollTop;el=el.parentNode}return{top:_y,left:_x}};VirtualSky.prototype.getJD=function(clock){if(!clock){clock=this.clock}return(clock.getTime()/86400000)+2440587.5};VirtualSky.prototype.getNegative=function(colour){var end=(colour.indexOf("rgb")==0)?(colour.lastIndexOf(")")):0;if(end==0){return colour}var rgb=colour.substring(colour.indexOf("(")+1,end).split(",");return(rgb.length==3)?("rgb("+(255-rgb[0])+","+(255-rgb[1])+","+(255-rgb[2])+")"):("rgba("+(255-rgb[0])+","+(255-rgb[1])+","+(255-rgb[2])+","+(rgb[3])+")")};VirtualSky.prototype.greatCircle=function(l1,d1,l2,d2){return Math.acos(Math.cos(d1)*Math.cos(d2)*Math.cos(l1-l2)+Math.sin(d1)*Math.sin(d2))};VirtualSky.prototype.on=function(ev,fn){if(typeof ev!=="string"||typeof fn!=="function"){return this}if(this.events[ev]){this.events[ev].push(fn)}else{this.events[ev]=[fn]}return this};VirtualSky.prototype.bind=function(ev,fn){return this.on(ev,fn)};VirtualSky.prototype.trigger=function(ev,args){if(typeof ev!=="string"){return}if(typeof args!=="object"){args={}}var o=[];var _obj=this;if(typeof this.events[ev]==="object"){for(i=0;i0){return o}};function convertTZ(s){function formatHour(h){var s=(h>=0?"+":"-");h=Math.abs(h);var m=(h-Math.floor(h))*60;var h=Math.floor(h);return s+(h<10?"0"+h:h)+(m<10?"0"+m:m)}var tzs={A:1,ACDT:10.5,ACST:9.5,ADT:-3,AEDT:11,AEST:10,AKDT:-8,AKST:-9,AST:-4,AWST:8,B:2,BST:1,C:3,CDT:-5,CEDT:2,CEST:2,CET:1,CST:-6,CXT:7,D:4,E:5,EDT:-4,EEDT:3,EEST:3,EET:2,EST:-5,F:6,G:7,GMT:0,H:8,HAA:-3,HAC:-5,HADT:-9,HAE:-4,HAP:-7,HAR:-6,HAST:-10,HAT:-2.5,HAY:-8,HNA:-4,HNC:-6,HNE:-5,HNP:-8,HNR:-7,HNT:-3.5,HNY:-9,I:9,IST:9,IST:1,JST:9,K:10,L:11,M:12,MDT:-6,MESZ:2,MEZ:1,MST:-7,N:-1,NDT:-2.5,NFT:11.5,NST:-3.5,O:-2,P:-3,PDT:-7,PST:-8,Q:-4,R:-5,S:-6,T:-7,U:-8,UTC:0,UT:0,V:-9,W:-10,WEDT:1,WEST:1,WET:0,WST:8,X:-11,Y:-12,Z:0};var i=s.lastIndexOf(" ");if(i>0&&tzs[s.substr(i+1)]){return s.substring(0,i)+" "+formatHour(tzs[s.substr(i+1)])}return s}S.virtualsky=function(placeholder,input){if(typeof input==="object"){input.container=placeholder}else{if(typeof placeholder==="string"){input={container:placeholder}}else{input=placeholder}}input.plugins=S.virtualsky.plugins;return new VirtualSky(input)};S.virtualsky.plugins=[]})(S); \ No newline at end of file +this.setDir=function(){var d=S("script[src*=virtualsky]").attr("src")[0].match(/^.*\//);this.dir=d&&d[0]||"";return};this.getDir=function(pattern){if(typeof pattern!=="string"){pattern="virtualsky"}var d=S("script[src*="+pattern+"]").attr("src");if(typeof d==="string"){d=[d]}if(d.length<1){d=[""]}d=d[0].match(/^.*\//);return d&&d[0]||""};this.q=S.query();this.setDir();this.dir=this.getDir();this.langurl=this.dir+"lang/%LANG%.json";this.id="";this.gradient=true;this.magnitude=5;this.background="rgba(0,0,0,0)";this.color="";this.wide=0;this.tall=0;this.d2r=Math.PI/180;this.r2d=180/Math.PI;this.setLongitude(-119.86286);this.setLatitude(34.4326);this.spin=false;this.cardinalpoints=true;this.constellation={lines:false,boundaries:false,labels:false};this.meteorshowers=false;this.negative=false;this.showgalaxy=false;this.showstars=true;this.showstarlabels=false;this.showplanets=true;this.showplanetlabels=true;this.showorbits=false;this.showdate=true;this.showposition=true;this.scalestars=1;this.ground=false;this.grid={az:false,eq:false,gal:false,step:30};this.gal={processed:false,lineWidth:0.75};this.ecliptic=false;this.meridian=false;this.keyboard=true;this.mouse=true;this.islive=false;this.fullscreen=false;this.transparent=false;this.fps=10;this.credit=(location.host=="lco.global"&&location.href.indexOf("/embed")<0)?false:true;this.callback={geo:"",mouseenter:"",mouseout:""};this.keys=new Array();this.base="";this.az_step=0;this.az_off=0;this.ra_off=0;this.dc_off=0;this.fov=30;this.plugins=[];this.calendarevents=[];this.events={};this.projections={polar:{title:"Polar projection",azel2xy:function(az,el,w,h){var radius=h/2;var r=radius*((Math.PI/2)-el)/(Math.PI/2);return{x:(w/2-r*Math.sin(az)),y:(radius-r*Math.cos(az)),el:el}},polartype:true,atmos:true},fisheye:{title:"Fisheye polar projection",azel2xy:function(az,el,w,h){var radius=h/2;var r=radius*Math.sin(((Math.PI/2)-el)/2)/0.70710678;return{x:(w/2-r*Math.sin(az)),y:(radius-r*Math.cos(az)),el:el}},polartype:true,atmos:true},ortho:{title:"Orthographic polar projection",azel2xy:function(az,el,w,h){var radius=h/2;var r=radius*Math.cos(el);return{x:(w/2-r*Math.sin(az)),y:(radius-r*Math.cos(az)),el:el}},polartype:true,atmos:true},stereo:{title:"Stereographic projection",azel2xy:function(az,el,w,h){var f=0.42;var sinel1=0;var cosel1=1;var cosaz=Math.cos((az-Math.PI));var sinaz=Math.sin((az-Math.PI));var sinel=Math.sin(el);var cosel=Math.cos(el);var k=2/(1+sinel1*sinel+cosel1*cosel*cosaz);return{x:(w/2+f*k*h*cosel*sinaz),y:(h-f*k*h*(cosel1*sinel-sinel1*cosel*cosaz)),el:el}},atmos:true},lambert:{title:"Lambert projection",azel2xy:function(az,el,w,h){var cosaz=Math.cos((az-Math.PI));var sinaz=Math.sin((az-Math.PI));var sinel=Math.sin(el);var cosel=Math.cos(el);var k=Math.sqrt(2/(1+cosel*cosaz));return{x:(w/2+0.6*h*k*cosel*sinaz),y:(h-0.6*h*k*(sinel)),el:el}},atmos:true},gnomic:{title:"Gnomic projection",azel2xy:function(az,el){if(el>=0){var pos=this.azel2radec(az,el);return this.radec2xy(pos.ra*this.d2r,pos.dec*this.d2r,[el,az])}else{return{x:-1,y:-1,el:el}}},radec2xy:function(ra,dec,coords){var fov,cd,cd0,sd,sd0,dA,A,F,scale,twopi;if(Math.abs(dec-this.dc_off)>this.maxangle){return{x:-1,y:-1,el:-1}}var ang=this.greatCircle(this.ra_off,this.dc_off,ra,dec);if(ang>this.maxangle){return{x:-1,y:-1,el:-1}}if(!coords){coords=this.coord2horizon(ra,dec)}if(this.ground&&coords[0]<-0.000001){return{x:-1,y:-1,el:coords[0]*this.r2d}}scale=this.tall/this.fov;cd=Math.cos(dec);cd0=Math.cos(this.dc_off);sd=Math.sin(dec);sd0=Math.sin(this.dc_off);dA=ra-this.ra_off;dA=inrangeAz(dA);A=cd*Math.cos(dA);F=scale*this.r2d/(sd0*sd+A*cd0);return{x:(this.wide/2)-F*cd*Math.sin(dA),y:(this.tall/2)-F*(cd0*sd-A*sd0),el:coords[0]*this.r2d}},draw:function(){if(!this.transparent){this.ctx.fillStyle=(this.hasGradient())?"rgba(0,15,30, 1)":((this.negative)?this.col.white:this.col.black);this.ctx.fillRect(0,0,this.wide,this.tall);this.ctx.fill()}},isVisible:function(el){return true},atmos:false,fullsky:true},equirectangular:{title:"Equirectangular projection",azel2xy:function(az,el,w,h){while(az<0){az+=2*Math.PI}az=(az)%(Math.PI*2);return{x:(((az-Math.PI)/(Math.PI/2))*h+w/2),y:(h-(el/(Math.PI/2))*h),el:el}},maxb:90,atmos:true},mollweide:{title:"Mollweide projection",radec2xy:function(ra,dec){var dtheta,x,y,coords,sign,outside,normra;var thetap=Math.abs(dec);var pisindec=Math.PI*Math.sin(Math.abs(dec));for(var i=0;i<20;i++){dtheta=-(thetap+Math.sin(thetap)-pisindec)/(1+Math.cos(thetap));thetap+=dtheta;if(dtheta<0.0001){break}}normra=(ra+this.d2r*this.az_off)%(2*Math.PI)-Math.PI;outside=false;x=-(2/Math.PI)*(normra)*Math.cos(thetap/2)*this.tall/2+this.wide/2;if(x>this.wide){outside=true}sign=(dec>=0)?1:-1;y=-sign*Math.sin(thetap/2)*this.tall/2+this.tall/2;coords=this.coord2horizon(ra,dec);return{x:(outside?-100:x%this.wide),y:y,el:coords[0]*this.r2d}},draw:function(){var c=this.ctx;c.moveTo(this.wide/2,this.tall/2);c.beginPath();var x=this.wide/2-this.tall;var y=0;var w=this.tall*2;var h=this.tall;var kappa=0.5522848;var ox=(w/2)*kappa;var oy=(h/2)*kappa;var xe=x+w;var ye=y+h;var xm=x+w/2;var ym=y+h/2;c.moveTo(x,ym);c.bezierCurveTo(x,ym-oy,xm-ox,y,xm,y);c.bezierCurveTo(xm+ox,y,xe,ym-oy,xe,ym);c.bezierCurveTo(xe,ym+oy,xm+ox,ye,xm,ye);c.bezierCurveTo(xm-ox,ye,x,ym+oy,x,ym);c.closePath();if(!this.transparent){c.fillStyle=(this.hasGradient())?"rgba(0,15,30, 1)":((this.negative)?this.col.white:this.col.black);c.fill()}},altlabeltext:true,fullsky:true,atmos:false},planechart:{title:"Planechart projection",radec2xy:function(ra,dec){ra=inrangeAz(ra);var normra=(ra+this.d2r*this.az_off)%(2*Math.PI)-Math.PI;var x=-(normra/(2*Math.PI))*this.tall*2+this.wide/2;var y=-(dec/Math.PI)*this.tall+this.tall/2;var coords=this.coord2horizon(ra,dec);return{x:x,y:y,el:coords[0]*this.r2d}},draw:function(){if(!this.transparent){this.ctx.fillStyle=(this.hasGradient())?"rgba(0,15,30, 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2,348.973,-9.09],[114971,3.7,349.291,3.28],[114996,4,349.357,-58.24],[115102,4.4,349.706,-32.53],[115438,4,350.743,-20.1],[115738,5,351.733,1.26],[115830,4.3,351.992,6.38],[116231,4.4,353.243,-37.82],[116584,3.8,354.391,46.46],[116727,3.2,354.837,77.63],[116771,4.1,354.988,5.63],[116928,4.5,355.512,1.78],[118268,4,359.828,6.86]]);this.starnames={};this.file={stars:this.dir+"stars.json",lines:this.dir+"lines_latin.json",boundaries:this.dir+"boundaries.json",showers:this.dir+"showers.json",galaxy:this.dir+"galaxy.json",planets:this.dir+"virtualsky-planets.js"};this.hipparcos={};this.updateClock(new Date());this.fullsky=false;this.colours={normal:{txt:"rgb(255,255,255)",black:"rgb(0,0,0)",white:"rgb(255,255,255)",grey:"rgb(100,100,100)",stars:"rgb(255,255,255)",sun:"rgb(255,215,0)",moon:"rgb(150,150,150)",cardinal:"rgba(163,228,255, 1)",constellation:"rgba(180,180,255,0.8)",constellationboundary:"rgba(255,255,100,0.6)",showers:"rgba(100,255,100,0.8)",galaxy:"rgba(100,200,255,0.5)",az:"rgba(100,100,255,0.4)",eq:"rgba(255,100,100,0.4)",ec:"rgba(255,0,0,0.4)",gal:"rgba(100,200,255,0.4)",meridian:"rgba(25,255,0,0.4)",pointers:"rgb(200,200,200)"},negative:{txt:"rgb(0,0,0)",black:"rgb(0,0,0)",white:"rgb(255,255,255)",grey:"rgb(100,100,100)",stars:"rgb(0,0,0)",sun:"rgb(0,0,0)",moon:"rgb(0,0,0)",cardinal:"rgba(0,0,0,1)",constellation:"rgba(0,0,0,0.8)",constellationboundary:"rgba(0,0,0,0.6)",showers:"rgba(0,0,0,0.8)",galaxy:"rgba(0,0,0,0.5)",az:"rgba(0,0,255,0.6)",eq:"rgba(255,100,100,0.8)",ec:"rgba(255,0,0,0.6)",gal:"rgba(100,200,255,0.8)",meridian:"rgba(0,255,0,0.6)"}};this.input=input;this.init(input);this.language=(typeof this.q.lang==="string")?this.q.lang:(typeof this.setlang==="string"?this.setlang:(navigator)?(navigator.userLanguage||navigator.systemLanguage||navigator.language||browser.language):"");var fromqs=(typeof this.q.lang==="string"||typeof this.setlang==="string");this.langs={ar:{language:{name:"العربية",alignment:"right"}},cs:{language:{name:"Čeština",alignment:"left"}},en:{language:{name:"English",alignment:"left"}},es:{language:{name:"Español",alignment:"left"}},fr:{language:{name:"Français",alignment:"left"}},it:{language:{name:"Italiano",alignment:"left"}},pt:{language:{name:"Português",alignment:"left"}},};this.lang=this.langs.en;if(typeof this.polartype=="undefined"){this.selectProjection("polar")}this.updateColours();this.loadLanguage(this.language,"",fromqs);var v,a,b,r,s,p,k,c;v=".virtualsky";a="#f0f0f0";b="#fcfcfc";k="background";c=k+"-color";p="padding";this.padding=4;bs="box-shadow:0px 0px 20px rgba(255,255,255,0.5);";function br(i){return"border-radius:"+i+";-moz-border-radius:"+i+";-webkit-border-radius:"+i+";"}r=br("0em");s=br("3px");S("head").append('");this.pointers=[];this.dragging=false;this.x="";this.y="";this.theta=0;this.skygrad;this.infobox="virtualsky_infobox";this.container="";this.times=this.astronomicalTimes();if(this.id){this.createSky()}p=this.moonPos(this.times.JD);this.moon=p.moon;this.sun=p.sun;if(this.islive){interval=window.setInterval(function(sky){sky.setClock("now")},1000,this)}return this}VirtualSky.prototype.init=function(d){if(!d){return this}var q=location.search;if(q&&q!="#"){var bits=q.replace(/^\?|\&$/g,"").split("&");var key,val;for(var i=0;i0?l.substring(0,l.indexOf("-")):l.substring(0,2));if(fromquerystring){lang=l}else{if(this.langs[l]){lang=l}}}l=lang;if(!l){l="en"}var url=this.langurl.replace("%LANG%",l);this.loadJSON(url,function(data){this.langcode=l;this.langs[l]=data;this.langs[l].loaded=true;if(data.starnames){for(var n in data.starnames){this.starnames[n]=data.starnames[n]}}this.changeLanguage(l);if(typeof fn==="function"){fn.call(this)}},function(data){},function(e){this.loadLanguage("en",fn)});return this};VirtualSky.prototype.changeLanguage=function(code,fn){if(this.langs[code]){if(!this.langs[code].loaded){this.loadLanguage(code,fn)}else{this.lang=this.langs[code];this.langcode=code;this.draw();if(typeof fn==="function"){fn.call(this)}}return this}this.lang=this.langs.en;return this};VirtualSky.prototype.htmlDecode=function(input){if(!input){return""}var e=document.createElement("div");e.innerHTML=input;return e.childNodes[0].nodeValue};VirtualSky.prototype.getPhrase=function(key,key2){if(key===undefined){return undefined}if(key==="constellations"){if(key2&&is(this.lang.constellations[key2],"string")){return this.htmlDecode(this.lang.constellations[key2])}}else{if(key==="planets"){if(this.lang.planets&&this.lang.planets[key2]){return this.htmlDecode(this.lang.planets[key2])}else{return this.htmlDecode(this.lang[key2])}}else{return this.htmlDecode(this.lang[key])||this.htmlDecode(this.langs.en[key])||""}}};VirtualSky.prototype.resize=function(w,h){if(!this.canvas){return}if(!w||!h){if(this.fullscreen){this.canvas.css({width:0,height:0});w=window.innerWidth;h=window.innerHeight;this.canvas.css({width:w+"px",height:h+"px"})}else{this.canvas.css({width:0,height:0});w=this.container.outerWidth();h=this.container.outerHeight();this.canvas.css({width:w+"px",height:h+"px"})}}if(w==this.wide&&h==this.tall){return}this.setWH(w,h);this.positionCredit();this.updateSkyGradient();this.draw();this.container.css({"font-size":this.fontsize()+"px"});this.trigger("resize",{vs:this})};VirtualSky.prototype.setWH=function(w,h){if(!w||!h){return}this.c.width=w;this.c.height=h;this.wide=w;this.tall=h;this.changeFOV();this.canvas.css({width:w+"px",height:h+"px"})};VirtualSky.prototype.changeFOV=function(delta){var fov=this.fov;if(delta>0){fov/=1.05}else{if(delta<0){fov*=1.05}}return this.setFOV(fov)};VirtualSky.prototype.setFOV=function(fov){if(fov>60||typeof fov!=="number"){this.fov=60}else{if(fov<1){this.fov=1}else{this.fov=fov}}this.maxangle=this.d2r*this.fov*Math.max(this.wide,this.tall)/this.tall;this.maxangle=Math.min(this.maxangle,Math.PI/2);return this};VirtualSky.prototype.hide=function(){this.container.hide();return this};VirtualSky.prototype.show=function(){this.container.show();return this};VirtualSky.prototype.toggle=function(){this.container.toggle();return this};VirtualSky.prototype.convertStarsToRadians=function(stars){for(var i=0;i'+msg+" ");setTimeout(function(){S("#"+id).remove()},1000)}return this};VirtualSky.prototype.checkLoaded=function(){if(!this.planets&&this.showplanets){this.load("planets",this.file.planets)}if(!this.lines&&this.constellation.lines){this.load("lines",this.file.lines)}if(!this.boundaries&&this.constellation.boundaries){this.load("boundaries",this.file.boundaries)}if(!this.showers&&this.meteorshowers){this.load("showers",this.file.showers)}if(!this.galaxy&&this.showgalaxy){this.load("galaxy",this.file.galaxy)}return this};VirtualSky.prototype.createSky=function(){this.container=S("#"+this.id);this.times=this.astronomicalTimes();if(this.q.debug){S("body").append('
    ')}if(this.fntfam){this.container.css({"font-family":this.fntfam})}if(this.fntsze){this.container.css({"font-size":this.fntsze})}if(this.container.length==0){S("body").append('
    ');this.container=$("#"+this.id)}this.container.css("position","relative");var _obj=this;window.onresize=function(){_obj.resize()};this.checkLoaded();this.changeMagnitude(0);if(this.objects){var ob=this.objects.split(";");for(var o=0;o=0)?{url:ob[o],src:"file",type:"json"}:{url:"https://www.strudel.org.uk/lookUP/json/?name="+ob[o],src:"lookup",type:"jsonp"})}var lookups=0;var ok=true;for(var o=0;o5){ok=false}if(ok||ob[o].src!="lookup"){S(document).ajax(ob[o].url,{dataType:ob[o].type,"this":this,success:function(data){if(typeof data.length==="undefined"){data=[data]}for(var i=0;i0){this.container.css("width",this.wide+"px")}this.wide=this.container.width();if(this.tall>0){this.container.css("height",this.tall+"px")}this.tall=this.container.height()-0;this.idinner=this.id+"_inner";this.container.html('');this.canvas=S("#"+this.idinner);this.c=document.getElementById(this.idinner);if(this.excanvas){this.c=G_vmlCanvasManager.initElement(this.c)}if(this.c&&this.c.getContext){this.setWH(this.wide,this.tall);var ctx=this.ctx=this.c.getContext("2d");ctx.clearRect(0,0,this.wide,this.tall);ctx.beginPath();var fs=this.fontsize();ctx.font=fs+"px Helvetica";ctx.fillStyle="rgb(0,0,0)";ctx.lineWidth=1.5;var loading="Loading sky...";ctx.fillText(loading,(ctx.wide-ctx.measureText(loading).width)/2,(this.tall-fs)/2);ctx.fill();S("#"+this.idinner).on("click",{sky:this},function(e){e.data.sky.debug("click");var x=e.originalEvent.pageX-this.offset().left-window.scrollX;var y=e.originalEvent.pageY-this.offset().top-window.scrollY;matched=e.data.sky.whichPointer(x,y);e.data.sky.toggleInfoBox(matched);if(matched>=0){S(e.data.sky.canvas).css({cursor:"pointer"})}}).on("dblclick",{sky:this},function(e){e.data.sky.debug("dblclick");e.data.sky.toggleFullScreen()}).on("mousemove",{sky:this},function(e){e.preventDefault();e.data.sky.debug("mousemove");var s=e.data.sky;var x=e.originalEvent.layerX;var y=e.originalEvent.layerY;var theta,f,dr;if(s.mouse){s.canvas.css({cursor:"move"})}if(s.dragging&&s.mouse){if(s.polartype){theta=Math.atan2(y-s.tall/2,x-s.wide/2);if(!s.theta){s.theta=theta}s.az_off-=(s.theta-theta)*s.r2d;s.theta=theta}else{if(s.projection.id=="gnomic"){f=0.0015*(s.fov*s.d2r);dr=0;if(typeof s.x=="number"){dr=Math.min(Math.abs(s.x-x)*f/(Math.cos(s.dc_off)),Math.PI/36)}if(typeof s.y=="number"){s.dc_off-=(s.y-y)*f}s.ra_off-=(s.x-x>0?1:-1)*dr;s.dc_off=inrangeEl(s.dc_off)}else{if(typeof s.x=="number"){s.az_off+=(s.x-x)/4}}}s.az_off=s.az_off%360;s.x=x;s.y=y;s.draw();s.canvas.css({cursor:"-moz-grabbing"})}else{matched=s.whichPointer(x,y);s.toggleInfoBox(matched)}}).on("mousedown",{sky:this},function(e){e.data.sky.debug("mousedown");e.data.sky.dragging=true}).on("mouseup",{sky:this},function(e){e.data.sky.debug("mouseup");var s=e.data.sky;s.dragging=false;s.x="";s.y="";s.theta=""}).on("mouseout",{sky:this},function(e){e.data.sky.debug("mouseout");var s=e.data.sky;s.dragging=false;s.mouseover=false;s.x="";s.y="";if(typeof s.callback.mouseout=="function"){s.callback.mouseout.call(s)}}).on("mouseenter",{sky:this},function(e){e.data.sky.debug("mouseenter");var s=e.data.sky;s.mouseover=true;if(typeof s.callback.mouseenter=="function"){s.callback.mouseenter.call(s)}}).on("touchmove",{sky:this},function(e){e.preventDefault();var s=e.data.sky;var x=e.originalEvent.touches[0].pageX;var y=e.originalEvent.touches[0].pageX;e.data.sky.debug("touchmove "+x+","+y+" "+s.x+","+s.y+"");var theta,f,dr;if(s.dragging){if(s.polartype){theta=Math.atan2(y-s.tall/2,x-s.wide/2);if(!s.theta){s.theta=theta}s.az_off-=(s.theta-theta)*s.r2d;s.theta=theta}else{if(s.projection.id=="gnomic"){f=0.0015*(s.fov*s.d2r);dr=0;if(typeof s.x=="number"){dr=Math.min(Math.abs(s.x-x)*f/(Math.cos(s.dc_off)),Math.PI/36)}if(typeof s.y=="number"){s.dc_off-=(s.y-y)*f}s.ra_off-=(s.x-x>0?1:-1)*dr;s.dc_off=inrangeEl(s.dc_off)}else{if(typeof s.x=="number"){s.az_off+=(s.x-x)/4}}}s.az_off=s.az_off%360;s.x=x;s.y=y;s.draw()}}).on("touchstart",{sky:this},function(e){e.data.sky.debug("touchstart");e.data.sky.dragging=true}).on("touchend",{sky:this},function(e){e.data.sky.debug("touchend");e.data.sky.dragging=false;e.data.sky.x="";e.data.sky.y="";e.data.sky.theta=""}).on((isEventSupported("mousewheel")?"mousewheel":"wheel"),{sky:this},function(e){e.preventDefault();e.data.sky.debug("mousewheel");var delta=-(e.originalEvent.deltaY||e.originalEvent.wheelDelta);if(!delta){delta=0}var s=e.data.sky;if(s.mouse&&s.projection.id=="gnomic"){s.changeFOV(delta).draw();return false}else{return true}});S(document).on("keypress",{sky:this},function(ev,b){if(!ev){ev=window.event}e=ev.originalEvent;var code=e.keyCode||e.charCode||e.which||0;ev.data.sky.keypress(code,ev.originalEvent)})}this.registerKey("a",function(){this.toggleAtmosphere()},"atmos");this.registerKey("g",function(){this.toggleGround()},"ground");this.registerKey("h",function(){this.cycleProjection()},"projection");this.registerKey("i",function(){this.toggleNegative()},"neg");this.registerKey(",",function(){this.toggleEcliptic()},"ec");this.registerKey(";",function(){this.toggleMeridian()},"meridian");this.registerKey("e",function(){this.toggleGridlinesEquatorial()},"eq");this.registerKey("z",function(){this.toggleGridlinesAzimuthal()},"az");this.registerKey("m",function(){this.toggleGridlinesGalactic()},"gal");this.registerKey("M",function(){this.toggleGalaxy()},"galaxy");this.registerKey("q",function(){this.toggleCardinalPoints()},"cardinal");this.registerKey("s",function(){this.toggleStars()},"stars");this.registerKey("S",function(){this.toggleStarLabels()},"starlabels");this.registerKey("u",function(){this.togglePlanetLabels()},"sollabels");this.registerKey("p",function(){this.togglePlanetHints()},"sol");this.registerKey("o",function(){this.toggleOrbits()},"orbits");this.registerKey("c",function(){this.toggleConstellationLines()},"con");this.registerKey("v",function(){this.toggleConstellationLabels()},"names");this.registerKey("b",function(){this.toggleConstellationBoundaries()},"conbound");this.registerKey("R",function(){this.toggleMeteorShowers()},"meteorshowers");this.registerKey("1",function(){this.toggleHelp()});this.registerKey("8",function(){this.setClock("now").calendarUpdate()},"reset");this.registerKey("j",function(){if(!this.islive){this.spinIt("down")}},"slow");this.registerKey("k",function(){this.spinIt(0)},"stop");this.registerKey("l",function(){if(!this.islive){this.spinIt("up")}},"fast");this.registerKey("-",function(){this.setClock(-86400).calendarUpdate()},"subtractday");this.registerKey("=",function(){this.setClock(86400).calendarUpdate()},"addday");this.registerKey("[",function(){this.setClock(-86400*7).calendarUpdate()},"subtractweek");this.registerKey("]",function(){this.setClock(86400*7).calendarUpdate()},"addweek");this.registerKey(37,function(){this.az_off-=2;this.draw()},"azleft");this.registerKey(39,function(){this.az_off+=2;this.draw()},"azright");this.registerKey(38,function(){this.changeMagnitude(0.25)},"magup");this.registerKey(40,function(){this.changeMagnitude(-0.25)},"magdown");this.registerKey(63,function(){this.toggleHelp()});this.draw()};VirtualSky.prototype.changeMagnitude=function(m){if(typeof m!=="number"){return this}this.magnitude+=m;if(!this.starsdeep&&this.magnitude>4){this.load("stars",this.file.stars)}else{this.draw()}return this};VirtualSky.prototype.toggleHelp=function(){var v="virtualsky";if(S("."+v+"_dismiss").length>0){S("."+v+"_dismiss").trigger("click")}else{var o="";for(var i=0;i'+this.keys[i].str+' → '+this.getPhrase(this.keys[i].txt)+""}}this.container.append('
    ×
    '+this.getPhrase("keyboard")+'
      ');var hlp=S("."+v+"_help");var h=hlp.outerHeight();hlp.find("ul").html(o);S("."+v+"_helpinner").css({overflow:"auto","max-height":(this.tall-h)+"px"});for(var i=0;i=this.pointers.length||(i>=0&&!this.pointers[i].html)){return this}if(S("#"+this.id+"_"+this.infobox).length<=0){this.container.append('')}var el=S("#"+this.id+"_"+this.infobox);if(i>=0&&this.isVisible(this.pointers[i].el)&&this.pointers[i].x>0&&this.pointers[i].y>0&&this.pointers[i].x0){az=2*Math.PI-az}return[alt,az]};function inrangeAz(a,deg){if(deg){while(a<0){a+=360}while(a>360){a-=360}}else{var twopi=(2*Math.PI);while(a<0){a+=twopi}while(a>twopi){a-=twopi}}return a}function inrangeEl(a,deg){if(deg){if(a>=90){a=89.99999}if(a<=-90){a=-89.99999}}else{if(a>=Math.PI/2){a=(Math.PI/2)*0.999999}if(a<=-Math.PI/2){a=(-Math.PI/2)*0.999999}}return a}VirtualSky.prototype.selectProjection=function(proj){if(this.projections[proj]){this.projection=this.projections[proj];this.projection.id=proj;this.fullsky=this.projection.fullsky==true;this.polartype=this.projection.polartype==true;if(typeof this.projection.azel2xy==="function"){this.azel2xy=this.projection.azel2xy}else{this.azel2xy=function(az,el,w,h){if(!w){w=this.wide}if(!h){h=this.tall}if(az<0){az+=360}return{x:-1,y:-1,el:-1}}}if(typeof this.projection.azel2radec==="function"){this.azel2radec=this.projection.azel2radec}else{this.azel2radec=function(az,el){var xt,yt,r,l;l=this.latitude;xt=Math.asin(Math.sin(el)*Math.sin(l)+Math.cos(el)*Math.cos(l)*Math.cos(az));r=(Math.sin(el)-Math.sin(l)*Math.sin(xt))/(Math.cos(l)*Math.cos(xt));if(r>1){r=1}yt=Math.acos(r);if(Math.sin(az)>0){yt=Math.PI*2-yt}xt*=this.r2d;yt*=this.r2d;yt=(this.times.LST*15-yt+360)%360;return{ra:yt,dec:xt}}}if(this.ctx){this.updateSkyGradient()}this.updateColours();if(this.container){var w=this.container.width();var h=this.container.height();var s=(this.lang.projections&&this.lang.projections[proj])?this.lang.projections[proj]:this.projections[proj].title;if(S("."+this.id+"_projection").length>0){S("."+this.id+"_projection").remove()}this.container.append('
      '+s+"
      ");var elem=S("."+this.id+"_projection");elem.on("mouseover",{me:this},function(e){e.data.me.mouseover=true}).css({position:"absolute",padding:0,height:"2em",top:"50%",left:"50%",transform:"translate3D(-50%,-50%,0)","text-align":"center","line-height":"2em","z-index":20,"font-size":"1.5em",display:"block",overflow:"hidden","background-color":"transparent",color:(this.negative?this.col.black:this.col.white),opacity:1});setTimeout(function(e){e.fadeOut(1000,function(){this.remove()})},500,elem)}}};VirtualSky.prototype.cycleProjection=function(){var usenext=false;var proj=this.projection.id;var i=0;var firstkey;for(var key in this.projections){if(i==0){firstkey=key}if(usenext){proj=key;break}if(key==this.projection.id){usenext=true}i++}if(proj==this.projection.id){proj=firstkey}this.draw(proj)};VirtualSky.prototype.updateColours=function(){this.col=JSON.parse(JSON.stringify(((this.negative)?this.colours.negative:this.colours.normal)));if(this.color==""){if((this.polartype||this.projection.altlabeltext)){this.col.txt=this.col.grey}}else{this.col.txt=this.color}};VirtualSky.prototype.isVisible=function(el){if(typeof this.projection.isVisible==="function"){return this.projection.isVisible.call(el)}if(!this.fullsky){return(el>0)}else{return(this.ground)?(el>0):true}};VirtualSky.prototype.isPointBad=function(p){return p.x==-1&&p.y==-1};VirtualSky.prototype.astronomicalTimes=function(clock,lon){clock=clock||this.clock;lon=lon||this.longitude*this.r2d;var JD,JD0,S,T,T0,UT,A,GST,d,LST;JD=this.getJD(clock);JD0=Math.floor(JD-0.5)+0.5;S=JD0-2451545;T=S/36525;T0=(6.697374558+(2400.051336*T)+(0.000025862*T*T))%24;if(T0<0){T0+=24}UT=(((clock.getUTCMilliseconds()/1000+clock.getUTCSeconds())/60)+clock.getUTCMinutes())/60+clock.getUTCHours();A=UT*1.002737909;T0+=A;GST=T0%24;if(GST<0){GST+=24}d=(GST+lon/15)/24;d=d-Math.floor(d);if(d<0){d+=1}LST=24*d;return{GST:GST,LST:LST,JD:JD}};VirtualSky.prototype.moonPos=function(JD,sun){var d2r,JD,sun,lo,Po,No,i,e,l,Mm,N,C,Ev,sinMo,Ae,A3,Mprimem,Ec,A4,lprime,V,lprimeprime,Nprime,lppNp,sinlppNp,y,x,lm,Bm;d2r=this.d2r;JD=JD||this.times.JD;sun=sun||this.sunPos(JD);lo=91.929336;Po=130.143076;No=291.682547;i=5.145396;e=0.0549;l=(13.1763966*sun.D+lo)%360;if(l<0){l+=360}Mm=(l-0.1114041*sun.D-Po)%360;if(Mm<0){Mm+=360}N=(No-0.0529539*sun.D)%360;if(N<0){N+=360}C=l-sun.lon;Ev=1.2739*Math.sin((2*C-Mm)*d2r);sinMo=Math.sin(sun.Mo*d2r);Ae=0.1858*sinMo;A3=0.37*sinMo;Mprimem=Mm+Ev-Ae-A3;Ec=6.2886*Math.sin(Mprimem*d2r);A4=0.214*Math.sin(2*Mprimem*d2r);lprime=l+Ev+Ec-Ae+A4;V=0.6583*Math.sin(2*(lprime-sun.lon)*d2r);lprimeprime=lprime+V;Nprime=N-0.16*sinMo;lppNp=(lprimeprime-Nprime)*d2r;sinlppNp=Math.sin(lppNp);y=sinlppNp*Math.cos(i*d2r);x=Math.cos(lppNp);lm=Math.atan2(y,x)/d2r+Nprime;Bm=Math.asin(sinlppNp*Math.sin(i*d2r))/d2r;if(lm>360){lm-=360}return{moon:{lon:lm,lat:Bm},sun:sun}};VirtualSky.prototype.sunPos=function(JD){var D,eg,wg,e,N,Mo,v,lon,lat;D=(JD-2455196.5);eg=279.557208;wg=283.112438;e=0.016705;N=((360/365.242191)*D)%360;if(N<0){N+=360}Mo=(N+eg-wg)%360;if(Mo<0){Mo+=360}v=Mo+(360/Math.PI)*e*Math.sin(Mo*Math.PI/180);lon=v+wg;if(lon>360){lon-=360}lat=0;return{lat:lat,lon:lon,Mo:Mo,D:D,N:N}};VirtualSky.prototype.meanObliquity=function(JD){if(!JD){JD=this.times.JD}var T,T2,T3;T=(JD-2451545)/36525;T2=T*T;T3=T2*T;return(23.4392917-0.0130041667*T-1.6667e-7*T2+5.027778e-7*T3)*this.d2r};VirtualSky.prototype.ecliptic2azel=function(l,b,LST,lat){if(!LST){this.times=this.astronomicalTimes();LST=this.times.LST}if(!lat){lat=this.latitude}var sl,cl,sb,cb,v,e,ce,se,Cprime,s,ST,cST,sST,B,r,sphi,cphi,A,w,theta,psi;sl=Math.sin(l);cl=Math.cos(l);sb=Math.sin(b);cb=Math.cos(b);v=[cl*cb,sl*cb,sb];e=this.meanObliquity();ce=Math.cos(e);se=Math.sin(e);Cprime=[[1,0,0],[0,ce,-se],[0,se,ce]];s=this.vectorMultiply(Cprime,v);ST=LST*15*this.d2r;cST=Math.cos(ST);sST=Math.sin(ST);B=[[cST,sST,0],[sST,-cST,0],[0,0,1]];r=this.vectorMultiply(B,s);sphi=Math.sin(lat);cphi=Math.cos(lat);A=[[-sphi,0,cphi],[0,-1,0],[cphi,0,sphi]];w=this.vectorMultiply(A,r);theta=Math.atan2(w[1],w[0]);psi=Math.asin(w[2]);return{az:theta,el:psi}};VirtualSky.prototype.ecliptic2radec=function(l,b,JD){var e=this.meanObliquity();var sl=Math.sin(l);var cl=Math.cos(l);var sb=Math.sin(b);var cb=Math.cos(b);var tb=Math.tan(b);var se=Math.sin(e);var ce=Math.cos(e);ra=Math.atan2((sl*ce-tb*se),(cl));dec=Math.asin(sb*ce+cb*se*sl);if(ra<0){ra+=Math.PI+Math.PI}return{ra:ra,dec:dec}};VirtualSky.prototype.ecliptic2xy=function(l,b,LST){LST=LST||this.times.LST;if(typeof this.projection.ecliptic2xy==="function"){return this.projection.ecliptic2xy.call(this,l,b,LST)}else{if(this.fullsky){var pos=this.ecliptic2radec(l,b);return this.radec2xy(pos.ra,pos.dec)}else{var pos=this.ecliptic2azel(l,b,LST);var el=pos.el*this.r2d;pos=this.azel2xy(pos.az-(this.az_off*this.d2r),pos.el,this.wide,this.tall);pos.el=el;return pos}}return 0};VirtualSky.prototype.radec2xy=function(ra,dec){if(typeof this.projection.radec2xy==="function"){return this.projection.radec2xy.call(this,ra,dec)}else{var coords=this.coord2horizon(ra,dec);var pos=this.azel2xy(coords[1]-(this.az_off*this.d2r),coords[0],this.wide,this.tall);return{x:pos.x,y:pos.y,az:coords[1]*this.r2d,el:coords[0]*this.r2d}}return 0};VirtualSky.prototype.azel2xy=function(az,el,w,h){return{x:-1,y:-1}};VirtualSky.prototype.azel2radec=function(az,el){return{ra:0,dec:0}};VirtualSky.prototype.gal2xy=function(l,b){var pos=this.gal2radec(l,b);return this.radec2xy(pos[0],pos[1])};VirtualSky.prototype.gal2radec=function(l,b){return this.Transform([l,b],[-0.054875539726,0.494109453312,-0.867666135858,-0.87343710801,-0.444829589425,-0.198076386122,-0.483834985808,0.74698225181,0.455983795705],false)};VirtualSky.prototype.Transform=function(p,rot,indeg){if(indeg){p[0]*=this.d2r;p[1]*=this.d2r}var cp1=Math.cos(p[1]);var m=[Math.cos(p[0])*cp1,Math.sin(p[0])*cp1,Math.sin(p[1])];var s=[m[0]*rot[0]+m[1]*rot[1]+m[2]*rot[2],m[0]*rot[3]+m[1]*rot[4]+m[2]*rot[5],m[0]*rot[6]+m[1]*rot[7]+m[2]*rot[8]];var r=Math.sqrt(s[0]*s[0]+s[1]*s[1]+s[2]*s[2]);var b=Math.asin(s[2]/r);var cb=Math.cos(b);var a=Math.atan2(((s[1]/r)/cb),((s[0]/r)/cb));if(a<0){a+=Math.PI*2}if(indeg){return[a*this.r2d,b*this.r2d]}else{return[a,b]}};VirtualSky.prototype.fk1tofk5=function(a,b){return this.Transform([a,b],[0.9995358730015703,-0.02793693620138929,-0.012147682028606801,0.027936935758478665,0.9996096732234282,-0.00016976035344812515,0.012147683047201562,-0.00016968744936278707,0.9999261997781408])};VirtualSky.prototype.vectorMultiply=function(A,B){if(B.length>0){if(B[0].length>0){return[[(A[0][0]*B[0][0]+A[0][1]*B[1][0]+A[0][2]*B[2][0]),(A[0][0]*B[0][1]+A[0][1]*B[1][1]+A[0][2]*B[2][1]),(A[0][0]*B[0][2]+A[0][1]*B[1][2]+A[0][2]*B[2][2])],[(A[1][0]*B[0][0]+A[1][1]*B[1][0]+A[1][2]*B[2][0]),(A[1][0]*B[0][1]+A[1][1]*B[1][1]+A[1][2]*B[2][1]),(A[1][0]*B[0][2]+A[1][1]*B[1][2]+A[1][2]*B[2][2])],[(A[2][0]*B[0][0]+A[2][1]*B[1][0]+A[2][2]*B[2][0]),(A[2][0]*B[0][1]+A[2][1]*B[1][1]+A[2][2]*B[2][1]),(A[2][0]*B[0][2]+A[2][1]*B[1][2]+A[2][2]*B[2][2])]]}else{return[(A[0][0]*B[0]+A[0][1]*B[1]+A[0][2]*B[2]),(A[1][0]*B[0]+A[1][1]*B[1]+A[1][2]*B[2]),(A[2][0]*B[0]+A[2][1]*B[1]+A[2][2]*B[2])]}}};VirtualSky.prototype.setFont=function(){this.ctx.font=this.fontsize()+"px "+this.canvas.css("font-family")};VirtualSky.prototype.fontsize=function(){if(this.fntsze){return parseInt(this.fntsze)}var m=Math.min(this.wide,this.tall);return(m<600)?((m<500)?((m<350)?((m<300)?((m<250)?9:10):11):12):14):parseInt(this.container.css("font-size"))};VirtualSky.prototype.positionCredit=function(){this.container.find("."+this.id+"_credit").css({position:"absolute",top:(parseFloat(this.tall)-this.padding-this.fontsize())+"px",left:this.padding+"px"})};VirtualSky.prototype.updateSkyGradient=function(){var s=null;if(this.ctx&&this.hasGradient()){if(this.projection.polartype){if(typeof this.ctx.createRadialGradient==="function"){s=this.ctx.createRadialGradient(this.wide/2,this.tall/2,0,this.wide/2,this.tall/2,this.tall/2);s.addColorStop(0,"rgba(0,0,0,1)");s.addColorStop(0.7,"rgba(0,0,0,0.2)");s.addColorStop(1,"rgba(0,50,80,0.3)")}}else{s=this.ctx.createLinearGradient(0,0,0,this.tall);s.addColorStop(0,"rgba(0,30,50,0.1)");s.addColorStop(0.7,"rgba(0,30,50,0.35)");s.addColorStop(1,"rgba(0,50,80,0.6)")}}this.skygrad=s;return this};VirtualSky.prototype.draw=function(proj){if(this.wide<=0||this.tall<=0){return this}if(!(this.c&&this.c.getContext)){return this}if(proj!==undefined){this.selectProjection(proj)}var white=this.col.white;var black=this.col.black;var c=this.ctx;var d=this.container;c.moveTo(0,0);c.clearRect(0,0,this.wide,this.tall);c.fillStyle=(this.polartype||this.fullsky)?this.background:((this.negative)?white:black);c.fillRect(0,0,this.wide,this.tall);c.fill();if(this.polartype){c.moveTo(this.wide/2,this.tall/2);c.closePath();c.beginPath();c.arc(this.wide/2,this.tall/2,-0.5+this.tall/2,0,Math.PI*2,true);c.closePath();if(!this.transparent){c.fillStyle=(this.hasGradient())?"rgba(0,15,30, 1)":((this.negative)?white:black);c.fill()}c.lineWidth=0.5;c.strokeStyle=black;c.stroke()}else{if(typeof this.projection.draw==="function"){this.projection.draw.call(this)}}if(this.hasGradient()){if(this.skygrad===undefined){this.updateSkyGradient()}else{c.beginPath();c.fillStyle=this.skygrad;if(this.projection.polartype){c.arc(this.wide/2,this.tall/2,this.tall/2,0,2*Math.PI,false);c.fill()}else{c.fillRect(0,0,this.wide,this.tall)}c.closePath()}}this.startClip().drawGridlines("az").drawGridlines("eq").drawGridlines("gal").drawGalaxy().drawConstellationLines().drawConstellationBoundaries().drawStars().drawEcliptic().drawMeridian().drawPlanets().drawMeteorShowers().endClip().drawCardinalPoints();for(var i=0;i0)?this.getPhrase("N"):this.getPhrase("S"))+", "+Math.abs(this.longitude*this.r2d).toFixed(2)+((this.longitude>0)?this.getPhrase("E"):this.getPhrase("W"));var metric_pos=this.drawText(positionstring,this.padding,this.padding+fontsize+fontsize)}if(this.credit){var credit=this.getPhrase("power");var metric_credit=this.drawText(credit,this.padding,this.tall-this.padding);if(d.find("."+this.id+"_credit").length==0){d.append('
      '+this.getPhrase("powered")+"
      ")}d.find("."+this.id+"_credit").css({padding:0,"z-index":20,display:"block",overflow:"hidden","background-color":"transparent"});d.find("."+this.id+"_credit a").css({display:"block",width:Math.ceil(metric_credit)+"px",height:fontsize+"px"});this.positionCredit()}if(this.showhelp){var helpstr="?";if(d.find("."+this.id+"_help").length==0){d.append('
      '+helpstr+"
      ").find("."+this.id+"_help").css({position:"absolute",padding:this.padding+"px","z-index":20,display:"block",overflow:"hidden","background-color":"transparent",right:0+"px",top:0+"px"}).find("a").css({"text-decoration":"none",color:txtcolour}).on("click",{me:this},function(e){e.data.me.toggleHelp()})}d.find("."+this.id+"_help").find("a").css({color:txtcolour})}if(this.container.find("."+this.id+"_btn_help").length==0){this.container.append('
      ?
      ');var off=S("#"+this.idinner).position();this.container.find("."+this.id+"_btn_help").css({position:"absolute",top:(off.top+this.padding)+"px",right:this.padding+"px","z-index":20}).on("click",{me:this},function(e){e.data.me.toggleHelp()})}if(this.container.find("."+this.id+"_clock").length==0){this.container.append('
      '+clockstring+"
      ");var off=S("#"+this.idinner).position();this.container.find("."+this.id+"_clock").css({position:"absolute",padding:0+"px",width:Math.round(metric_clock)+"px",cursor:"pointer",top:(off.top+this.padding)+"px",left:(off.left+this.padding)+"px","z-index":20,display:"block",overflow:"hidden","background-color":"transparent",color:"transparent"}).on("click",{sky:this},function(e){var s=e.data.sky;var id=s.id;var hid="#"+id;var v="virtualsky";if(S(hid+"_calendar").length==0){var off=S(hid).offset();var w=280;var h=50;if(s.wide
      ×
      '+s.getPhrase("date")+'
      ');S(hid+"_calendar").css({width:w});S(hid+"_calendar input").on("change",{sky:s},function(e){d=S("#"+id+"_date").val();t=S("#"+id+"_time").val();e.data.sky.updateClock(new Date(parseInt(d.substr(0,4)),parseInt(d.substr(5,2))-1,parseInt(d.substr(8,2)),parseInt(t.substr(0,2)),parseInt(t.substr(3,2)),0,0));e.data.sky.calendarUpdate();e.data.sky.draw()})}s.createLightbox(S(hid+"_calendar"));S(hid+"_year").val(s.clock.getFullYear());S(hid+"_month").val(s.clock.getMonth()+1);S(hid+"_day").val(s.clock.getDate());S(hid+"_hours").val(s.clock.getHours());S(hid+"_mins").val(s.clock.getMinutes())})}if(S("."+this.id+"_position").length==0){this.container.append('
      '+positionstring+"
      ");S("."+this.id+"_position").on("click",{sky:this},function(e){var s=e.data.sky;var id=s.id;var hid="#"+id;var v="virtualsky";if(S(hid+"_geo").length==0){var w=310;var narrow="";if(s.wide';w=w/2}s.container.append('
      ×
      '+s.getPhrase("position")+'
      '+s.getPhrase("N")+"
      "+narrow+'
      '+s.getPhrase("E")+"
      ");S(hid+"_geo").css({width:w+"px",align:"center"});S(hid+"_geo input").css({width:"6em"})}s.createLightbox(S(hid+"_geo"),{close:function(e){if(this.vs){this.vs.setGeo(S(hid+"_lat").val()+","+S(hid+"_long").val()).setClock(0).draw()}}});S(hid+"_lat").val(s.latitude*s.r2d);S(hid+"_long").val(s.longitude*s.r2d);if(typeof s.callback.geo=="function"){s.callback.geo.call(s)}})}var off=S("#"+this.idinner).position();S("."+this.id+"_position").css({position:"absolute",padding:0,width:Math.round(metric_pos)+"px",cursor:"pointer",top:(off.top+this.padding+fontsize)+"px",left:(off.left+this.padding)+"px","z-index":20,display:"block",overflow:"hidden","background-color":"transparent",color:"transparent"});return this};VirtualSky.prototype.startClip=function(){if(this.polartype){this.ctx.save();this.ctx.beginPath();this.ctx.arc(this.wide/2,this.tall/2,-0.5+this.tall/2,0,Math.PI*2,true);this.ctx.clip()}return this};VirtualSky.prototype.endClip=function(){if(this.polartype){this.ctx.restore()}return this};VirtualSky.prototype.createLightbox=function(lb,opts){if(!lb.length){return this}if(!opts){opts={}}function Lightbox(lb,vs,opts){this.lb=lb;this.vs=vs;this.opts=opts||{};var n="virtualsky_bg";if(this.vs.container.find("."+n).length==0){this.vs.container.append('
      ')}var bg=this.vs.container.find("."+n);bg.show();this.bg=bg;this.vs.container.find(".virtualsky_dismiss").on("click",{lb:this},function(e){e.data.lb.close()});bg.on("click",{lightbox:this},function(e){e.data.lightbox.close()});this.vs.on("resize",function(e){if(this.lightbox){this.lightbox.resize()}});this.resize();return this}Lightbox.prototype.resize=function(){function columize(wide,tall){lb.find("li").css({display:"inline-block","margin-left":"0px",width:"auto"});lb.find("ul").css({width:"auto"});lb.css({position:"relative"});w=lb.outerWidth();var bar=24;var li=lb.find("ul li");var mx=1;for(var i=0;imx){mx=S(li[i]).width()}}var n=Math.floor(w/(mx+bar));if(n>1){if(n>3){n=3}lb.find("li").css({width:(mx)+"px","margin-left":Math.floor(bar/2)+"px"});lb.find("li:nth-child("+n+"n+1)").css({"margin-left":"0px"})}else{lb.find("li").css({display:"block",width:"auto"})}lb.find("ul").css({width:"100%"}).parent().css({width:Math.min(w-bar,(mx+bar/2)*n+bar)+"px"});lb.css({"z-index":100,position:"absolute"});lb.css({left:Math.floor((wide-lb.outerWidth())/2)+"px",top:((tall-lb.height())/2)+"px"})}columize.call(this.vs.wide,this.vs.tall);this.lb.css({left:(Math.round(this.vs.wide-this.lb.outerWidth())/2)+"px",top:(Math.round(this.vs.tall-this.lb.outerHeight())/2)+"px"});return this};Lightbox.prototype.close=function(){if(typeof this.opts.close==="function"){this.opts.close.call(this)}this.lb.remove();this.bg.remove();this.vs.lightbox=null;return this};this.lightbox=new Lightbox(lb,this,opts);return this};VirtualSky.prototype.drawStars=function(){if(!this.showstars&&!this.showstarlabels){return this}var mag,i,j,p,d,atmos,fovf;var c=this.ctx;c.beginPath();c.fillStyle=this.col.stars;this.az_off=(this.az_off+360)%360;atmos=this.hasAtmos();fovf=Math.sqrt(30/this.fov);var f=1;if(this.negative){f*=1.4}if(typeof this.scalestars==="number"&&this.scalestars!=1){f*=this.scalestars}if(this.projection.id==="gnomic"){f*=fovf}for(i=0;i=0){pos_2=mini+1+4;pos_1=mini+1;fract=mindt/Math.abs(data[pos_2-1]-data[pos_1-1])}else{pos_2=mini+1;pos_1=mini+1-4;fract=(1+(mindt)/Math.abs(data[pos_2-1]-data[pos_1-1]))}if(pos_2>data.length||pos_1<0){dra=data[mini+1];ddec=data[mini+2];dmag=data[mini+3]}else{dra=(Math.abs(data[pos_2]-data[pos_1])>180)?(data[pos_1]+(data[pos_2]+360-data[pos_1])*fract)%360:(data[pos_1]+(data[pos_2]-data[pos_1])*fract)%360;ddec=data[pos_1+1]+(data[pos_2+1]-data[pos_1+1])*fract;dmag=data[pos_1+2]+(data[pos_2+2]-data[pos_1+2])*fract}return{ra:dra,dec:ddec,mag:dmag}};VirtualSky.prototype.drawPlanets=function(){if(!this.showplanets&&!this.showplanetlabels&&!this.showorbits){return this}if(!this.planets||this.planets.length<=0){return this}var ra,dec,mag,pos,p;var c=this.ctx;var oldjd=this.jd;this.jd=this.times.JD;var colour=this.col.grey;var maxl=this.maxLine();for(p=0;pthis.planets[p][2][0]&&this.jd0&&previous.y>0&&this.isVisible(point.el)){c.moveTo(previous.x,previous.y);if(Math.abs(point.x-previous.x)0){c.fillStyle=colour}c.lineWidth=1.5;var xoff=d;if((this.polartype)&&c.measureText){xoff=-c.measureText(label).width-3}if((this.polartype)&&x=0&&b>=0&&a1){move=(cbdone[atob]||cbdone[btoa]);if(typeof move==="undefined"){move=true}ra=(b[0]-a[0])%360;if(ra>180){ra=ra-360}if(ra<-180){ra=ra+360}dc=(b[1]-a[1]);n=(move)?5:2;if(ra/2>n){n=parseInt(ra)}if(dc/2>n){n=parseInt(dc)}dra=ra/n;ddc=dc/n;for(var i=1;i<=n;i++){ra=a[0]+(i*dra);if(ra<0){ra+=360}dc=a[1]+(i*ddc);d=this.fk1tofk5(ra*this.d2r,dc*this.d2r);points.push([d[0],d[1],move])}}cbdone[atob]=true;cbdone[btoa]=true;a=b}this.constellation.bpts[c]=points}posa=null;for(i=0;i<=points.length;i++){j=(i==points.length)?0:i;posb=this.radec2xy(points[j][0],points[j][1]);if(posa&&this.isVisible(posa.el)&&this.isVisible(posb.el)&&points[j][2]){if(!this.isPointBad(posa)&&!this.isPointBad(posb)){if(Math.abs(posa.x-posb.x)=maxl||dy>=maxl){this.ctx.moveTo(pb.x,pb.y)}this.ctx.lineTo(pb.x,pb.y)}else{this.ctx.moveTo(pb.x,pb.y)}}pa=pb}}this.gal.processed=true;this.ctx.stroke();return this};VirtualSky.prototype.drawMeteorShowers=function(colour){if(!this.meteorshowers||typeof this.showers==="string"){return this}if(!colour){colour=this.col.showers}var shower,pos,label,xoff,c,d,p,start,end,dra,ddc,f;c=this.ctx;c.beginPath();c.strokeStyle=colour;c.fillStyle=colour;c.lineWidth=(this.grid.lineWidth||0.75);var fs=this.fontsize();this.setFont();var y=this.clock.getFullYear();for(var s in this.showers){d=this.showers[s].date;p=this.showers[s].pos;start=new Date(y,d[0][0]-1,d[0][1]);end=new Date(y,d[1][0]-1,d[1][1]);if(start>end&&this.clockstart&&this.clock=minb;b-=step){old=joinpoint(this,"az",0,b,old,maxl)}c.stroke();return this};VirtualSky.prototype.drawGridlines=function(type,step,colour){if(!type||!this.grid[type]){return this}if(typeof colour!=="string"){colour=this.col[type]}if(typeof step!=="number"){step=this.grid.step}var maxb,minb,x,y,a,b,pos,c,oldx,oldy,bstep2,ra,dc;c=this.ctx;oldx=0;oldy=0;c.beginPath();c.strokeStyle=colour;c.lineWidth=(this.grid.lineWidth||1);bstep=2;if(type=="az"){maxb=(typeof this.projection.maxb==="number")?this.projection.maxb:90-bstep;minb=0}else{maxb=90-bstep;minb=-maxb}var maxl=this.maxLine(5);old={x:-1,y:-1,moved:false};step*=this.d2r;bstep*=this.d2r;minb*=this.d2r;maxb*=this.d2r;for(a=0;afontsize)?m.width/2:fontsize/2}else{r=fontsize/2}ang=(azs[i]-this.az_off)*this.d2r;if(this.polartype){f=(this.tall/2)-r*1.5;x=-f*Math.sin(ang);y=-f*Math.cos(ang);x=isFinite(x)?this.wide/2+x-r:0;y=isFinite(y)?this.tall/2+y+r:0}else{pos=this.azel2xy(ang,0,this.wide,this.tall);x=isFinite(pos.x)?pos.x-r:0;y=isFinite(pos.y)?pos.y-pt/2:0;if(x<0||x>this.wide-pt){x=-r}}if(x>0){c.fillText(d[i],x,y)}}c.fill();return this};VirtualSky.prototype.highlight=function(i,colour){var p=this.pointers[i];if(this.pointers[i].ra&&this.pointers[i].dec){colour=p.colour||colour||"rgba(255,0,0,1)";if(this.negative){colour=this.getNegative(colour)}var pos=this.radec2xy(p.ra*this.d2r,p.dec*this.d2r);var c=this.ctx;if(this.isVisible(pos.el)){p.az=pos.az;p.el=pos.el;p.x=pos.x;p.y=pos.y;c.fillStyle=colour;c.strokeStyle=colour;c.beginPath();c.fillRect(p.x-p.d/2,p.y-p.d/2,p.d,p.d);c.fill();this.drawLabel(p.x,p.y,p.d,colour,p.label)}}return this};function joinpoint(s,type,a,b,old,maxl){var x,y,show,c,pos;c=s.ctx;if(type=="az"){pos=s.azel2xy((a-s.az_off*s.d2r),b,s.wide,s.tall)}else{if(type=="eq"){pos=s.radec2xy(a,b)}else{if(type=="ec"){pos=s.ecliptic2xy(a,b,s.times.LST)}else{if(type=="gal"){pos=s.gal2xy(a,b)}}}}x=pos.x;y=pos.y;if(type=="az"){show=true}else{show=((s.isVisible(pos.el))?true:false)}if(show&&isFinite(x)&&isFinite(y)){if(type=="az"){if(!old.moved||Math.sqrt(Math.pow(old.x-x,2)+Math.pow(old.y-y,2))>s.tall/2){c.moveTo(x,y)}c.lineTo(x,y);old.moved=true}else{if(!old.moved||Math.sqrt(Math.pow(old.x-x,2)+Math.pow(old.y-y,2))>maxl){c.moveTo(x,y);old.moved=true}else{c.lineTo(x,y)}}old.x=x;old.y=y}return old}VirtualSky.prototype.maxLine=function(f){if(this.projection.id==="gnomic"){return this.tall}if(typeof f!=="number"){f=3}return this.tall/f};VirtualSky.prototype.setGeo=function(pos){if(typeof pos!=="string"){return this}pos=pos.split(",");this.setLatitude(pos[0]);this.setLongitude(pos[1]);return this};VirtualSky.prototype.setLatitude=function(l){this.latitude=inrangeEl(parseFloat(l)*this.d2r);return this};VirtualSky.prototype.setLongitude=function(l){this.longitude=parseFloat(l)*this.d2r;while(this.longitude<=-Math.PI){this.longitude+=2*Math.PI}while(this.longitude>Math.PI){this.longitude-=2*Math.PI}return this};VirtualSky.prototype.toggleFullScreen=function(){if(fullScreenApi.isFullScreen()){fullScreenApi.cancelFullScreen(this.container[0]);this.fullscreen=false;this.container.removeClass("fullscreen")}else{fullScreenApi.requestFullScreen(this.container[0]);this.fullscreen=true;this.container.addClass("fullscreen")}return this};VirtualSky.prototype.setRADec=function(r,d){return this.setRA(r).setDec(d)};VirtualSky.prototype.setRA=function(r){this.ra_off=(r%360)*this.d2r;return this};VirtualSky.prototype.setDec=function(d){this.dc_off=d*this.d2r;return this};VirtualSky.prototype.panTo=function(ra,dec,s){if(!s){s=1000}if(typeof ra!=="number"||typeof dec!=="number"){return this}this.panning={s:{ra:this.ra_off*this.r2d,dec:this.dc_off*this.r2d},e:{ra:ra,dec:dec},duration:s,start:new Date()};this.panning.dr=this.panning.e.ra-this.panning.s.ra;this.panning.dd=this.panning.e.dec-this.panning.s.dec;if(this.panning.dr>180){this.panning.dr=-(360-this.panning.dr)}if(this.panning.dr<-180){this.panning.dr=(360+this.panning.dr)}return this.panStep()};window.requestAnimFrame=(function(){return window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||function(callback){window.setTimeout(callback,1000/60)}})();VirtualSky.prototype.panStep=function(){var ra,dc;var now=new Date();var t=(now-this.panning.start)/this.panning.duration;ra=this.panning.s.ra+(this.panning.dr)*(t);dc=this.panning.s.dec+(this.panning.dd)*(t);if(t<1){this.setRADec(ra,dc).draw();var _obj=this;requestAnimFrame(function(){_obj.panStep()})}else{this.setRADec(this.panning.e.ra,this.panning.e.dec).draw()}return this};VirtualSky.prototype.liveSky=function(pos){this.islive=!this.islive;if(this.islive){interval=window.setInterval(function(sky){sky.setClock("now")},1000,this)}else{if(interval!==undefined){clearInterval(interval)}}return this};VirtualSky.prototype.start=function(){this.islive=true;if(interval!==undefined){clearInterval(interval)}interval=window.setInterval(function(sky){sky.setClock("now")},1000,this)};VirtualSky.prototype.stop=function(){this.islive=false;if(interval!==undefined){clearInterval(interval)}};VirtualSky.prototype.advanceTime=function(by,wait){if(by===undefined){this.updateClock(new Date())}else{by=parseFloat(by);if(!wait){wait=1000/this.fps}var fn=function(vs,by){vs.setClock(by)};clearInterval(this.interval_time);clearInterval(this.interval_calendar);this.interval_time=window.setInterval(fn,wait,this,by);this.interval_calendar=window.setInterval(function(vs){vs.calendarUpdate()},1000,this)}return this};VirtualSky.prototype.updateClock=function(d){this.clock=d;this.times=this.astronomicalTimes()};VirtualSky.prototype.calendarUpdate=function(){for(var e=0;e'+credit+''}this.pointers[i]=p}return(this.pointers.length)};VirtualSky.prototype.changeAzimuth=function(inc){this.az_off+=(typeof inc==="number")?inc:5;this.draw();return this};VirtualSky.prototype.moveIt=function(){this.timer_az=window.setTimeout(function(mysky){mysky.az_off+=mysky.az_step;mysky.draw();mysky.moveIt()},100,this);return this};VirtualSky.prototype.spinIt=function(tick,wait){if(typeof tick==="number"){this.spin=(tick==0)?0:(this.spin+tick)}else{var t=1/this.fps;var s=2;if(this.spin==0){this.spin=(tick=="up")?t:-t}else{if(Math.abs(this.spin)<1){s*=2}if(this.spin>0){this.spin=(tick=="up")?(this.spin*s):(this.spin/s)}else{if(this.spin<0){this.spin=(tick=="up")?(this.spin/s):(this.spin*s)}}if(this.spin-t){this.spin=0}}}if(this.interval_time!==undefined){clearInterval(this.interval_time)}if(this.spin!=0){this.advanceTime(this.spin,wait)}return this};VirtualSky.prototype.getOffset=function(el){var _x=0;var _y=0;while(el&&!isNaN(el.offsetLeft)&&!isNaN(el.offsetTop)){_x+=el.offsetLeft-el.scrollLeft;_y+=el.offsetTop-el.scrollTop;el=el.parentNode}return{top:_y,left:_x}};VirtualSky.prototype.getJD=function(clock){if(!clock){clock=this.clock}return(clock.getTime()/86400000)+2440587.5};VirtualSky.prototype.getNegative=function(colour){var end=(colour.indexOf("rgb")==0)?(colour.lastIndexOf(")")):0;if(end==0){return colour}var rgb=colour.substring(colour.indexOf("(")+1,end).split(",");return(rgb.length==3)?("rgb("+(255-rgb[0])+","+(255-rgb[1])+","+(255-rgb[2])+")"):("rgba("+(255-rgb[0])+","+(255-rgb[1])+","+(255-rgb[2])+","+(rgb[3])+")")};VirtualSky.prototype.greatCircle=function(l1,d1,l2,d2){return Math.acos(Math.cos(d1)*Math.cos(d2)*Math.cos(l1-l2)+Math.sin(d1)*Math.sin(d2))};VirtualSky.prototype.on=function(ev,fn){if(typeof ev!=="string"||typeof fn!=="function"){return this}if(this.events[ev]){this.events[ev].push(fn)}else{this.events[ev]=[fn]}return this};VirtualSky.prototype.bind=function(ev,fn){return this.on(ev,fn)};VirtualSky.prototype.trigger=function(ev,args){if(typeof ev!=="string"){return}if(typeof args!=="object"){args={}}var o=[];var _obj=this;if(typeof this.events[ev]==="object"){for(i=0;i0){return o}};function convertTZ(s){function formatHour(h){var s=(h>=0?"+":"-");h=Math.abs(h);var m=(h-Math.floor(h))*60;var h=Math.floor(h);return s+(h<10?"0"+h:h)+(m<10?"0"+m:m)}var tzs={A:1,ACDT:10.5,ACST:9.5,ADT:-3,AEDT:11,AEST:10,AKDT:-8,AKST:-9,AST:-4,AWST:8,B:2,BST:1,C:3,CDT:-5,CEDT:2,CEST:2,CET:1,CST:-6,CXT:7,D:4,E:5,EDT:-4,EEDT:3,EEST:3,EET:2,EST:-5,F:6,G:7,GMT:0,H:8,HAA:-3,HAC:-5,HADT:-9,HAE:-4,HAP:-7,HAR:-6,HAST:-10,HAT:-2.5,HAY:-8,HNA:-4,HNC:-6,HNE:-5,HNP:-8,HNR:-7,HNT:-3.5,HNY:-9,I:9,IST:9,IST:1,JST:9,K:10,L:11,M:12,MDT:-6,MESZ:2,MEZ:1,MST:-7,N:-1,NDT:-2.5,NFT:11.5,NST:-3.5,O:-2,P:-3,PDT:-7,PST:-8,Q:-4,R:-5,S:-6,T:-7,U:-8,UTC:0,UT:0,V:-9,W:-10,WEDT:1,WEST:1,WET:0,WST:8,X:-11,Y:-12,Z:0};var i=s.lastIndexOf(" ");if(i>0&&tzs[s.substr(i+1)]){return s.substring(0,i)+" "+formatHour(tzs[s.substr(i+1)])}return s}S.virtualsky=function(placeholder,input){if(typeof input==="object"){input.container=placeholder}else{if(typeof placeholder==="string"){input={container:placeholder}}else{input=placeholder}}input.plugins=S.virtualsky.plugins;return new VirtualSky(input)};S.virtualsky.plugins=[]})(S); \ No newline at end of file