需求： [图片] 代码： three.beginPath(); three.moveTo(x, y); three.lineTo((x + w) + r * 0.4, y); three.arc((x + w) + r, y - r * 0.8, r, 0.7 * Math.PI, 0.3 * Math.PI); three.lineTo((x + (2 * w) + (2 * r)), y); three.lineTo((x + (2 * w) + (2 * r)), y + h); three.arc((x + (2 * w) + (2 * r)) + (r * 0.8), y + h + r, r, 1.2 * Math.PI, 0.8 * Math.PI); three.lineTo((x + (2 * w) + (2 * r)), y + (2 * h) + (2 * r)); three.lineTo(x, y + (2 * h) + (2 * r)); three.lineTo(x, y + h + 2 * r - r * 0.4); three.arc(x + (r * 0.8), y + h + r, r, 0.8 * Math.PI, 1.2 * Math.PI, true); three.lineTo(x, y); three.clip() three.closePath(); three.drawImage(img, 0, 0, canvas_width, canvas_height); three.draw() 模拟器效果： [图片] 真机运行效果： [图片] 显示整张图片，怎么回事？？？？求解