CanvasContext.scale

解釋：在調(diào)用scale方法后，之后創(chuàng)建的路徑其橫縱坐標(biāo)會被縮放。多次調(diào)用scale，倍數(shù)會相乘。

方法參數(shù)

示例 

在開發(fā)者工具中打開

圖片示例

代碼示例

<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();
    }
});