阿呆不呆
2015-01-30 16:02
SVG与canvas完全重叠,我想做个地图的可视化,在地图上加线条动画,想用SVG画地图,在地图上获取坐标,然后在canvas层画线条动画
canvas可以直接载入svg,下面附上代码
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> </head> <body> <svg id="svg" width="100" height="100" style="background: wheat;"> <circle cx="50" cy="50" r="25" fill="red"></circle> </svg> <canvas id="canvas" style="background: pink"></canvas> <script> const canvas = document.getElementById('canvas') const gd = canvas.getContext('2d') const svg = document.getElementById('svg') let xml = new XMLSerializer().serializeToString(svg) xml = encodeURIComponent(xml) xml = unescape(xml) xml = btoa(xml) const img = new Image() img.src = 'data:image/svg+xml;base64,' + xml img.onload = () => { console.log(img.width, img.height) gd.drawImage( img, 0, 0, img.width, img.height ) } </script> </body> </html>
请问贴主实现了吗?
这个是可以的
Canvas绘图详解
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