github_39286601的博客

**HTML的 canvas 水位图 ** * 利用正弦函数做出波浪 function init(height,width,xOffset,speed,rangeValue,nowRange) { this.canvas=document.querySelector('#wave'); this.canvas.height = height; this.canvas...

OpenLayers中在overlayer层使用canvas图层叠加 <div id="map" style="width: 100%;position: relative"></div> <canvas id="layer1" style="position: absolute"></canvas> <canvas id="layer2" s...