设置线条虚线样式的间距和长度。
属性 | 类型 | 默认值 | 必填 | 说明 | 最低版本 |
|---|---|---|---|---|---|
| pattern | Array | 是 | 一组描述交替绘制线段和间距（坐标空间单位）长度的数字 | ||
| offset | Number | 是 | 虚线偏移量 |
Page({
onLoad() {
const canvasContext = swan.createCanvasContext('myCanvas');
canvasContext.setLineDash([10, 20], 5);
canvasContext.beginPath();
canvasContext.moveTo(0,100);
canvasContext.lineTo(400, 100);
canvasContext.stroke();
canvasContext.draw();
}
});
Page({
onLoad() {
const canvasContext = swan.createCanvasContext('myCanvas');
canvasContext.setLineDash([10, 20], 5);
canvasContext.beginPath();
canvasContext.moveTo(0,100);
canvasContext.lineTo(400, 100);
canvasContext.stroke();
canvasContext.setLineDash([5, 10, 5], 5);
canvasContext.beginPath();
canvasContext.moveTo(0, 200);
canvasContext.lineTo(400, 200);
canvasContext.stroke();
canvasContext.draw();
}
});