cesium-plot-js/README.md

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# cesium-plot-js
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cesium 军事标绘插件,支持绘制多边形、曲线、箭头等图形
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![image](https://ethan-zf.github.io/cesium-plot-js/examples/plot.png)
[在线示例demo](https://ethan-zf.github.io/cesium-plot-js/examples/index.html)
### CDN
1. 引入文件
```
<script src="https://unpkg.com/cesium-plot-js"></script>
```
2. 调用绘制api
```
new CesiumPlot.FineArrow(Cesium, viewer);
```
### NPM
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1. install
```
npm i cesium-plot-js
```
2. import
```
import CesiumPlot from 'cesium-plot-js';
```
3. 调用绘制api
```
new CesiumPlot.FineArrow(Cesium, viewer);
```
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### Class
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每个图形为独立的类,绑定事件或其他操作通过类的实例来实现
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| 类名 | 类型 | 描述 |
| ---------------------- | --------- | ---------------- |
| Polygon | 'polygon' | 多边形 |
| Reactangle | 'polygon' | 矩形 |
| Triangle | 'polygon' | 三角形 |
| Circle | 'polygon' | 圆形 |
| StraightArrow | 'line' | 细直箭头 |
| CurvedArrow | 'line' | 曲线箭头 |
| FineArrow | 'polygon' | 直箭头 |
| AttackArrow | 'polygon' | 进攻方向箭头 |
| SwallowtailAttackArrow | 'polygon' | 燕尾进攻方向箭头 |
| SquadCombat | 'polygon' | 分队战斗方向 |
| SwallowtailSquadCombat | 'polygon' | 燕尾分队战斗方向 |
| AssaultDirection | 'polygon' | 突击方向 |
| DoubleArrow | 'polygon' | 双箭头 |
| FreehandLine | 'line' | 自由线 |
| FreehandPolygon | 'polygon' | 自由面 |
| Curve | 'line' | 曲线 |
| Ellipse | 'polygon' | 椭圆 |
| Lune | 'polygon' | 半月面 |
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### 构造函数
所有图形的构造函数:
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<类名>(cesium: Cesium, viewer: Cesium.Viewer, style?: [PolygonStyle](#PolygonStyle) | [LineStyle](#LineStyle))
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<h4 id='PolygonStyle'>PolygonStyle类型</h4>
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```
{
material?: Cesium.MaterialProperty;
outlineWidth?: number;
outlineMaterial?: Cesium.MaterialProperty;
};
```
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<h4 id='LineStyle'>LineStyle类型</h4>
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```
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{
material?: Cesium.Color;
lineWidth?: number;
};
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```
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示例
```
// 初始化viewer
const viewer = new Cesium.Viewer('cesiumContainer');
// 抗锯齿
viewer.scene.postProcessStages.fxaa.enabled = true;
// 设置自定义样式
const geometry = new CesiumPlot.FineArrow(Cesium, viewer, {
material: Cesium.Color.fromCssColorString('rgba(59, 178, 208, 0.5)'),
outlineMaterial: Cesium.Color.fromCssColorString('rgba(59, 178, 208, 1)'),
outlineWidth: 3,
});
```
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### 类的实例方法
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| 方法名 | 参数 | 描述 |
| ------ | ------------------------------------------------------- | -------- |
| hide | | 隐藏 |
| show | | 显示 |
| remove | | 删除 |
| on | (event: EventType, listener: (eventData?: any) => void) | 绑定事件 |
| off | (event: EventType) | 解绑事件 |
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```
// 隐藏图形
const geometry = new CesiumPlot.Reactangle(Cesium, viewer);
geometry.hide();
```
```
// 绑定事件
const geometry = new CesiumPlot.Reactangle(Cesium, viewer);
geometry.on('drawEnd', (data)=>{
console.log(data)
});
```
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### Events
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- 'drawStart'
绘制开始
- 'drawUpdate'
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绘制过程中点位更新,回调事件返回更新的 Cartesian3 点位
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- 'drawEnd'
绘制结束,回调事件返回图形的关键点位
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```
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geometry.on('drawEnd', (data) => {
console.log(data);
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});
```
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- 'editStart'
编辑开始
- 'editEnd'
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编辑结束,回调事件返回图形的关键点位