(function(factory){var L,proj4;if(typeof define==='function'&&define.amd){define(['leaflet','proj4'],factory);}else if(typeof module!=='undefined'){L=require('leaflet');proj4=require('proj4');module.exports=factory(L,proj4);}else{if(typeof window.L==='undefined'||typeof window.proj4==='undefined')
throw'Leaflet and proj4 must be loaded first';factory(window.L,window.proj4);}}(function(L,proj4){L.Proj={};L.Proj._isProj4Obj=function(a){return(typeof a.inverse!=='undefined'&&typeof a.forward!=='undefined');};L.Proj.ScaleDependantTransformation=function(scaleTransforms){this.scaleTransforms=scaleTransforms;};L.Proj.ScaleDependantTransformation.prototype.transform=function(point,scale){return this.scaleTransforms[scale].transform(point,scale);};L.Proj.ScaleDependantTransformation.prototype.untransform=function(point,scale){return this.scaleTransforms[scale].untransform(point,scale);};L.Proj.Projection=L.Class.extend({initialize:function(a,def){if(L.Proj._isProj4Obj(a)){this._proj=a;}else{var code=a;if(def){proj4.defs(code,def);}else if(proj4.defs[code]===undefined){var urn=code.split(':');if(urn.length>3){code=urn[urn.length-3]+':'+urn[urn.length-1];}
if(proj4.defs[code]===undefined){throw'No projection definition for code '+code;}}
this._proj=proj4(code);}},project:function(latlng){var point=this._proj.forward([latlng.lng,latlng.lat]);return new L.Point(point[0],point[1]);},unproject:function(point,unbounded){var point2=this._proj.inverse([point.x,point.y]);return new L.LatLng(point2[1],point2[0],unbounded);}});L.Proj.CRS=L.Class.extend({includes:L.CRS,options:{transformation:new L.Transformation(1,0,-1,0)},initialize:function(a,b,c){var code,proj,def,options;if(L.Proj._isProj4Obj(a)){proj=a;code=proj.srsCode;options=b||{};this.projection=new L.Proj.Projection(proj);}else{code=a;def=b;options=c||{};this.projection=new L.Proj.Projection(code,def);}
L.Util.setOptions(this,options);this.code=code;this.transformation=this.options.transformation;if(this.options.origin){this.transformation=new L.Transformation(1,-this.options.origin[0],-1,this.options.origin[1]);}
if(this.options.scales){this._scales=this.options.scales;}else if(this.options.resolutions){this._scales=[];for(var i=this.options.resolutions.length-1;i>=0;i--){if(this.options.resolutions[i]){this._scales[i]=1/this.options.resolutions[i];}}}},scale:function(zoom){var iZoom=Math.floor(zoom),baseScale,nextScale,scaleDiff,zDiff;if(zoom===iZoom){return this._scales[zoom];}else{baseScale=this._scales[iZoom];nextScale=this._scales[iZoom+1];scaleDiff=nextScale-baseScale;zDiff=(zoom-iZoom);return baseScale+scaleDiff*zDiff;}},getSize:function(zoom){var b=this.options.bounds,s,min,max;if(b){s=this.scale(zoom);min=this.transformation.transform(b.min,s);max=this.transformation.transform(b.max,s);return L.point(Math.abs(max.x-min.x),Math.abs(max.y-min.y));}else{s=256*Math.pow(2,zoom);return L.point(s,s);}}});L.Proj.CRS.TMS=L.Proj.CRS.extend({options:{tileSize:256},initialize:function(a,b,c,d){var code,def,proj,projectedBounds,options;if(L.Proj._isProj4Obj(a)){proj=a;projectedBounds=b;options=c||{};options.origin=[projectedBounds[0],projectedBounds[3]];L.Proj.CRS.prototype.initialize.call(this,proj,options);}else{code=a;def=b;projectedBounds=c;options=d||{};options.origin=[projectedBounds[0],projectedBounds[3]];L.Proj.CRS.prototype.initialize.call(this,code,def,options);}
this.projectedBounds=projectedBounds;this._sizes=this._calculateSizes();},_calculateSizes:function(){var sizes=[],crsBounds=this.projectedBounds,projectedTileSize,i,x,y;for(i=this._scales.length-1;i>=0;i--){if(this._scales[i]){projectedTileSize=this.options.tileSize/this._scales[i];x=Math.ceil(parseFloat((crsBounds[2]-crsBounds[0])/projectedTileSize).toPrecision(3))*projectedTileSize*this._scales[i];y=Math.ceil(parseFloat((crsBounds[3]-crsBounds[1])/projectedTileSize).toPrecision(3))*projectedTileSize*this._scales[i];sizes[i]=L.point(x,y);}}
return sizes;},getSize:function(zoom){return this._sizes[zoom];}});L.Proj.TileLayer={};L.Proj.TileLayer.TMS=L.TileLayer.extend({options:{continuousWorld:true},initialize:function(urlTemplate,crs,options){var boundsMatchesGrid=true,scaleTransforms,upperY,crsBounds,i;if(!(crs instanceof L.Proj.CRS.TMS)){throw'CRS is not L.Proj.CRS.TMS.';}
L.TileLayer.prototype.initialize.call(this,urlTemplate,options);this.options.tms=false;this.crs=crs;crsBounds=this.crs.projectedBounds;for(i=this.options.minZoom;i<this.options.maxZoom&&boundsMatchesGrid;i++){var gridHeight=(crsBounds[3]-crsBounds[1])/this._projectedTileSize(i);boundsMatchesGrid=Math.abs(gridHeight-Math.round(gridHeight))>1e-3;}
if(!boundsMatchesGrid){scaleTransforms={};for(i=this.options.minZoom;i<this.options.maxZoom;i++){upperY=crsBounds[1]+Math.ceil((crsBounds[3]-crsBounds[1])/this._projectedTileSize(i))*this._projectedTileSize(i);scaleTransforms[this.crs.scale(i)]=new L.Transformation(1,-crsBounds[0],-1,upperY);}
this.crs=new L.Proj.CRS.TMS(this.crs.projection._proj,crsBounds,this.crs.options);this.crs.transformation=new L.Proj.ScaleDependantTransformation(scaleTransforms);}},getTileUrl:function(tilePoint){var zoom=this._map.getZoom(),gridHeight=Math.ceil((this.crs.projectedBounds[3]-this.crs.projectedBounds[1])/this._projectedTileSize(zoom));return L.Util.template(this._url,L.Util.extend({s:this._getSubdomain(tilePoint),z:this._getZoomForUrl(),x:tilePoint.x,y:gridHeight-tilePoint.y-1},this.options));},_projectedTileSize:function(zoom){return(this.options.tileSize/this.crs.scale(zoom));}});L.Proj.GeoJSON=L.GeoJSON.extend({initialize:function(geojson,options){this._callLevel=0;L.GeoJSON.prototype.initialize.call(this,null,options);if(geojson){this.addData(geojson);}},addData:function(geojson){var crs;if(geojson){if(geojson.crs&&geojson.crs.type==='name'){crs=new L.Proj.CRS(geojson.crs.properties.name);}else if(geojson.crs&&geojson.crs.type){crs=new L.Proj.CRS(geojson.crs.type+':'+geojson.crs.properties.code);}
if(crs!==undefined){this.options.coordsToLatLng=function(coords){var point=L.point(coords[0],coords[1]);return crs.projection.unproject(point);};}}
this._callLevel++;try{L.GeoJSON.prototype.addData.call(this,geojson);}finally{this._callLevel--;if(this._callLevel===0){delete this.options.coordsToLatLng;}}}});L.Proj.geoJson=function(geojson,options){return new L.Proj.GeoJSON(geojson,options);};L.Proj.ImageOverlay=L.ImageOverlay.extend({initialize:function(url,bounds,options){L.ImageOverlay.prototype.initialize.call(this,url,null,options);this._projBounds=bounds;},_animateZoom:function(e){var northwest=L.point(this._projBounds.min.x,this._projBounds.max.y),southeast=L.point(this._projBounds.max.x,this._projBounds.min.y),topLeft=this._projectedToNewLayerPoint(northwest,e.zoom,e.center),size=this._projectedToNewLayerPoint(southeast,e.zoom,e.center).subtract(topLeft),origin=topLeft.add(size._multiplyBy((1-1/e.scale)/2));this._image.style[L.DomUtil.TRANSFORM]=L.DomUtil.getTranslateString(origin)+' scale('+this._map.getZoomScale(e.zoom)+') ';},_reset:function(){var zoom=this._map.getZoom(),pixelOrigin=this._map.getPixelOrigin(),bounds=L.bounds(this._transform(this._projBounds.min,zoom)._subtract(pixelOrigin),this._transform(this._projBounds.max,zoom)._subtract(pixelOrigin)),size=bounds.getSize(),image=this._image;L.DomUtil.setPosition(image,bounds.min);image.style.width=size.x+'px';image.style.height=size.y+'px';},_projectedToNewLayerPoint:function(point,newZoom,newCenter){var topLeft=this._map._getNewTopLeftPoint(newCenter,newZoom).add(this._map._getMapPanePos());return this._transform(point,newZoom)._subtract(topLeft);},_transform:function(p,zoom){var crs=this._map.options.crs,transformation=crs.transformation,scale=crs.scale(zoom);return transformation.transform(p,scale);}});L.Proj.imageOverlay=function(url,bounds,options){return new L.Proj.ImageOverlay(url,bounds,options);};if(typeof L.CRS!=='undefined'){L.CRS.proj4js=(function(){return function(code,def,transformation,options){options=options||{};if(transformation){options.transformation=transformation;}
return new L.Proj.CRS(code,def,options);};}());}
return L.Proj;}));