CanvasContext.beginPath

解释：开始创建一个路径，需要调用 fill 或者 stroke 才会使用路径进行填充或描边。

方法参数

无

示例 

在开发者工具中打开

图片示例

代码示例

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

Page({
    onLoad() {
        const canvasContext = swan.createCanvasContext('myCanvas');
        canvasContext.beginPath();
        canvasContext.setLineWidth(5);
        canvasContext.setStrokeStyle('blue');
        canvasContext.moveTo(0, 75);
        canvasContext.lineTo(250, 75);
        canvasContext.stroke();

        canvasContext.beginPath();
        canvasContext.setStrokeStyle('red');
        canvasContext.moveTo(50, 0);
        canvasContext.lineTo(150, 130);
        canvasContext.stroke();
        canvasContext.draw();
    }
});