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https://github.com/sakitam-fdd/ol-plot

:art: | openalyers 3 / 4 / 5 / 6 / 7 扩展标绘
https://github.com/sakitam-fdd/ol-plot

canvas gis map ol openlayers plot

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:art: | openalyers 3 / 4 / 5 / 6 / 7 扩展标绘

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# openlayers 扩展标绘

[![CI](https://github.com/sakitam-fdd/ol-plot/actions/workflows/ci.yml/badge.svg)](https://github.com/sakitam-fdd/ol-plot/actions/workflows/ci.yml)
[![npm version](https://badgen.net/npm/v/ol-plot)](https://npm.im/ol-plot)
[![npm downloads](https://badgen.net/npm/dm/ol-plot)](https://npm.im/ol-plot)
![JS gzip size](http://img.badgesize.io/https://unpkg.com/ol-plot/dist/ol-plot.js?compression=gzip&label=gzip%20size:%20JS)
[![GitHub stars](https://img.shields.io/github/stars/sakitam-fdd/ol-plot.svg)](https://github.com/sakitam-fdd/ol-plot/stargazers)
[![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/sakitam-fdd/ol-plot/master/LICENSE)

标绘功能,支持openlayers5 / 6 / 7;同时也实现了一个简单的 Vue 组件,请查看 `playground/vue3` 使用,npm 发布的包为 [![npm version](https://badgen.net/npm/v/ol-plot-vue)](https://npm.im/ol-plot-vue)

## build

> 重要: 如果想要使用 Github 上最新的源码,你需要自己构建。

---

```bash
git clone https://github.com/sakitam-fdd/ol-plot.git
pnpm run dev
pnpm run build
```

## Use

> `new olPlot.(map) 初始化标绘绘制工具`

### CDN

```bash
https://unpkg.com/ol-plot/dist/ol-plot.js
https://unpkg.com/ol-plot/dist/ol-plot.css
```

### NPM

```bash
npm install ol-plot --save
import 'ol-plot/dist/ol-plot.css'
import Plot form 'ol-plot'
```

## Examples

[![site](https://github.com/sakitam-fdd/ol-plot/blob/master/playground/vue3/public/image/plot.png?raw=true)](https://sakitam-fdd.github.io/ol-plot)

[![demo](https://raw.githubusercontent.com/sakitam-fdd/ol-plot/V1.0.0/examples/images/demo.png)](https://codepen.io/sakitam-fdd/pen/QMQydz)

其他示例请参看 playground 文件夹

## 实例方法

### plotDraw Methods

#### `activate(type, params)`

> 激活标绘工具

| key | type | desc |
|:---------|:---------|:-------|
| `type` | `string` | 标绘符号类型 |
| `params` | `Object` | 标绘符号参数 |

##### `type`

> 标绘类型

###### type:

| key | type | desc |
|:---------------------------------------| :--- |:----------|
| `olPlot.PlotTypes.ARC` | `string` | 弓形 |
| `olPlot.PlotTypes.ELLIPSE` | `string` | 椭圆 |
| `olPlot.PlotTypes.CURVE` | `string` | 曲线 |
| `olPlot.PlotTypes.CLOSED_CURVE` | `string` | 闭合曲面 |
| `olPlot.PlotTypes.LUNE` | `string` | 弓形 |
| `olPlot.PlotTypes.SECTOR` | `string` | 扇形 |
| `olPlot.PlotTypes.GATHERING_PLACE` | `string` | 集结地 |
| `olPlot.PlotTypes.STRAIGHT_ARROW` | `string` | 细直箭头 |
| `olPlot.PlotTypes.ASSAULT_DIRECTION` | `string` | 粗单直箭头 |
| `olPlot.PlotTypes.ATTACK_ARROW` | `string` | 进攻方向 |
| `olPlot.PlotTypes.TAILED_ATTACK_ARROW` | `string` | 进攻方向(尾) |
| `olPlot.PlotTypes.SQUAD_COMBAT` | `string` | 战斗行动 |
| `olPlot.PlotTypes.TAILED_SQUAD_COMBAT` | `string` | 分队战斗行动(尾) |
| `olPlot.PlotTypes.FINE_ARROW` | `string` | 粗单尖头箭头 |
| `olPlot.PlotTypes.CIRCLE` | `string` | 圆 |
| `olPlot.PlotTypes.DOUBLE_ARROW` | `string` | 双箭头 |
| `olPlot.PlotTypes.POLYLINE` | `string` | 线 |
| `olPlot.PlotTypes.FREEHAND_LINE` | `string` | 自由线 |
| `olPlot.PlotTypes.POLYGON` | `string` | 面 |
| `olPlot.PlotTypes.FREEHAND_POLYGON` | `string` | 自由面 |
| `olPlot.PlotTypes.RECTANGLE` | `string` | 矩形 |
| `olPlot.PlotTypes.RectInclined1` | `string` | 斜矩形1 |
| `olPlot.PlotTypes.RectInclined2` | `string` | 斜矩形2 |
| `olPlot.PlotTypes.MARKER` | `string` | 点 |
| `olPlot.PlotTypes.TEXTAREA` | `string` | 文本框 |

#### `deactivate()`

取消绘制工具的激活状态

### plotEdit Methods

#### `activate(feature)`

| key | type | desc |
| :--- | :--- | :---------- |
| `feature` | `ol.Feature` | 要激活的标绘符号 |

激活符号要素编辑

#### `deactivate()`

取消符号要素编辑状态

### PlotUtils Methods

| 方法 | 说明 | 参数 |
| :--- | :--- | :---------- |
| `getFeatures` | 序列化地图上所有符号 | -- |
| `addFeatures` | 反序列化保存的符号 | `features : Array` |
| `removeAllFeatures` | 删除所有符号 | -- |

## 事件

### plotDraw

```js
plot.plotDraw.on('drawStart', (e) => {
console.log(e);
});

plot.plotDraw.on('drawEnd', onDrawEnd);
```

#### drawStart

监听符号开始绘制,通过事件类型 ``plotType`` 判断是哪种标绘类型

#### drawEnd

监听符号结束绘制,通过事件类型 ``plotType`` 判断是哪种标绘类型

### plotEdit

```js
plot.plotEdit.on('activePlotChange', (e) => {
console.log(e);
});

plot.plotEdit.on('deactivatePlot', (e) => {
console.log(e);
});
```

#### activePlotChange

激活编辑状态的要素变化事件

#### deactivatePlot

监听要素结束编辑状态

### plot 实例事件

比较特殊,3.0 版本是绑定在 map 实例上的,从 4.0 版本起需要绑定在 plot 实例上。

```js
plot.on('activeTextArea', (e) => {
console.log(e);
});

plot.on('deactivateTextArea', (e) => {
console.log(e);
});
```

#### activeTextArea

激活文本框编辑事件

#### deactivateTextArea

取消激活文本框编辑事件