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Canvas clip() 方法

❮ Canvas 参考

示例

从上下文裁剪一个 200*120 像素的区域。然后,绘制一个红色矩形。只有红色矩形位于裁剪区域内的部分可见

不使用 clip()

使用 clip()

JavaScript

const canvas = document.getElementById("myCanvas");
const ctx = canvas.getContext("2d");

// 裁剪矩形区域
ctx.rect(50, 20, 200, 120);
ctx.stroke();
ctx.clip();

// 在 clip() 后绘制红色矩形
ctx.fillStyle = "red";
ctx.fillRect(0, 0, 150, 100);
</script>
亲自试一试 »

描述

The clip() 方法从原始上下文中裁剪任意大小的区域。

注意

当某个区域被裁剪后,未来的绘制将限制在裁剪区域内。

但是,您可以在使用 clip() 方法之前使用 save() 方法保存上下文设置,并使用 restore() 在以后恢复它。


语法

context.clip();

参数


返回值


浏览器支持

The <canvas> 元素是 HTML5 标准 (2014)。

clip() 在所有现代浏览器中都受支持

Chrome Edge Firefox Safari Opera IE
9-11

❮ Canvas 参考
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