orienter.min.js

/*!
 * GIT: https://github.com/shrekshrek/orienter
 **/

!function(t,i){"object"==typeof exports&&"undefined"!=typeof module?module.exports=i():"function"==typeof define&&define.amd?define(i):t.Orienter=i()}(this,function(){"use strict";function t(t){return Math.round(10*t)/10}var i=function(t){var i=t||{};switch(this.onOrient=i.onOrient||null,this.onChange=i.onChange||null,this._orient=this._orient.bind(this),this._change=this._change.bind(this),this.lon=this.lastLon=this.deltaLon=null,this.lat=this.lastLat=this.deltaLat=null,this.direction=window.orientation||0,this.direction){case 0:this.fix=0;break;case 90:this.fix=-270;break;case-90:this.fix=-90}navigator.userAgent.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/)?this.os="ios":this.os=navigator.userAgent.indexOf("Android")>-1||navigator.userAgent.indexOf("Linux")?"android":""};return Object.assign(i.prototype,{on:function(){this.lastLon=this.lastLat=null,window.addEventListener("deviceorientation",this._orient,!1),window.addEventListener("orientationchange",this._change,!1)},off:function(){window.removeEventListener("deviceorientation",this._orient,!1),window.removeEventListener("orientationchange",this._change,!1)},_change:function(){this.direction=window.orientation,this.onChange&&this.onChange(this.direction)},changeDirectionTo:function(t){this.direction=t},_orient:function(i){switch(this.os){case"ios":switch(this.direction){case 0:this.lon=i.alpha+i.gamma,i.beta>0&&(this.lat=i.beta-90);break;case 90:i.gamma<0?this.lon=i.alpha-90:this.lon=i.alpha-270,i.gamma>0?this.lat=90-i.gamma:this.lat=-90-i.gamma;break;case-90:i.gamma<0?this.lon=i.alpha-90:this.lon=i.alpha-270,i.gamma<0?this.lat=90+i.gamma:this.lat=-90+i.gamma}break;case"android":switch(this.direction){case 0:this.lon=i.alpha+i.gamma+30,i.gamma>90?this.lat=90-i.beta:this.lat=i.beta-90;break;case 90:this.lon=i.alpha-230,i.gamma>0?this.lat=270-i.gamma:this.lat=-90-i.gamma;break;case-90:this.lon=i.alpha-180,this.lat=-90+i.gamma}}this.lon+=this.fix,this.lon%=360,this.lon<0&&(this.lon+=360),this.lon=t(this.lon),this.lat=t(this.lat),null==this.lastLon&&(this.lastLon=this.lon),this.deltaLon=this.lon-this.lastLon,this.deltaLon>180&&(this.deltaLon-=360),this.deltaLon<-180&&(this.deltaLon+=360),this.lastLon=this.lon,null==this.lastLat&&(this.lastLat=this.lat),this.deltaLat=this.lat-this.lastLat,this.deltaLat>180&&(this.deltaLat-=360),this.deltaLat<-180&&(this.deltaLat+=360),this.lastLat=this.lat,this.onOrient&&this.onOrient({a:t(i.alpha),b:t(i.beta),g:t(i.gamma),lon:this.lon,lat:this.lat,deltaLon:this.deltaLon,deltaLat:this.deltaLat,dir:this.direction})}}),i});