轉(zhuǎn)換 Image 為 Canvas要把圖片轉(zhuǎn)換為Canvas(畫板,畫布),可以使用canvas元素 context 的drawImage方法: // 把image 轉(zhuǎn)換為 canvas對(duì)象function convertImageToCanvas(image) {// 創(chuàng)建canvas DOM元素,并設(shè)置其寬高和圖片一樣var canvas = document.createElement("canva…
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