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@vislite/canvas

v0.1.0

Published

基于VISLite的Canvas画笔开发的绘制方法

Downloads

5

Readme

@vislite/canvas

基于 VISLite 的Canvas画笔开发的绘制方法

如何使用?

创建&初始化

首先,需要进行安装:

npm install --save @vislite/canvas

然后获取即可:

import VISLite from "vislite";
import CanvasJs from "@vislite/canvas";

// https://oi-contrib.github.io/VISLite/#/api/canvas/import
let painter = new VISLite.Canvas(el);

// 创建
let canvasJs = new CanvasJs(painter);

方法

地图块

也就是绘制地图的一个区域的方法,比如我们有一个江苏地图的geoJSON,那么直接:

let map = new VISLite.Mercator(45, [120, 33]);

painter.config({
    strokeStyle: "#eee",
    fillStyle: "pink"
});

for (let i = 0; i < jiangsu.features.length; i++) {
    canvasJs.fullFeature(map, jiangsu.features[i], 350, 200)
}

这样,就可以获得一个江苏地图:

完整代码可以查看: feature.spec.html

上面演示的是fullFeature,其实还有同簇方法fillFeaturestrokeFeature可供选择。

箭头

指定开始和结束位置即可,例如:

canvasJs.arrow([100, 100], [300, 250]);

箭头使用轮廓绘制的,因此如果需要修改颜色的粗细,应该分别修改strokeStylelineWidth

版权

MIT License

Copyright (c) zxl20070701 走一步,再走一步