CanvasContext.scale

解释：在调用scale方法后，之后创建的路径其横纵坐标会被缩放。多次调用scale，倍数会相乘。

方法参数

示例 

在开发者工具中打开

图片示例

代码示例

<canvas class="myCanvas" canvas-id="myCanvas" />

Page({
    onLoad() {
        const canvasContext = swan.createCanvasContext('myCanvas');
        canvasContext.strokeRect(10, 10, 25, 15);
        canvasContext.scale(2, 2);
        canvasContext.strokeRect(10, 10, 25, 15);
        canvasContext.scale(2, 2);
        canvasContext.strokeRect(10, 10, 25, 15);
        canvasContext.draw();
    }
});