Processing绘制矩形
绘制矩形用rect函数rect(x,y,width,height)如果指定rectMode为CENTER,则x,y为矩形中心点的坐标，width和height分别为矩形的宽度和高度如果不指定rectMode(默认为CORNER)，则x,y为矩形左上角的坐标size(300,300);rectMode(CENTER);rect(150,150,200,200);...
威武钥匙
leaflet本地加载arcgis切片
var origin = [-20037700, 33711400];//图层起点坐标 var resolutions = [ 8466.6836000338681, // Level 0 4233.341800016934, // Level 1 2116.670900008467, // Level 2 1058.3354500042335,
