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https://github.com/ghettovoice/ol-rotate-feature
Rotate feature interaction for OpenLayers
https://github.com/ghettovoice/ol-rotate-feature
hacktoberfest ol ol-plugins ol-rotate-feature ol3 openlayers openlayers-plugins openlayers3 openlayers4
Last synced: 2 months ago
JSON representation
Rotate feature interaction for OpenLayers
- Host: GitHub
- URL: https://github.com/ghettovoice/ol-rotate-feature
- Owner: ghettovoice
- License: mit
- Created: 2016-06-06T14:42:40.000Z (over 8 years ago)
- Default Branch: master
- Last Pushed: 2024-03-29T08:46:54.000Z (9 months ago)
- Last Synced: 2024-10-10T06:25:14.546Z (3 months ago)
- Topics: hacktoberfest, ol, ol-plugins, ol-rotate-feature, ol3, openlayers, openlayers-plugins, openlayers3, openlayers4
- Language: JavaScript
- Homepage: https://ghettovoice.github.io/ol-rotate-feature/
- Size: 696 KB
- Stars: 28
- Watchers: 2
- Forks: 11
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
[](https://travis-ci.com/ghettovoice/ol-rotate-feature)
[](https://github.com/ghettovoice/ol-rotate-feature/actions/workflows/test.yml)
[](https://coveralls.io/github/ghettovoice/ol-rotate-feature?branch=master)
[](https://github.com/ghettovoice/ol-rotate-feature/releases)
[](https://www.npmjs.org/package/ol-rotate-feature)
[](https://github.com/ghettovoice/ol-rotate-feature/blob/master/LICENSE)
# Rotate feature interaction for OpenLayers
Plugin adds interaction that allows rotating vector features around some anchor.
### [Demo](https://ghettovoice.github.io/ol-rotate-feature/demo.html)
## Installation
Install it with NPM (**recommended**):
```shell
# ES6 version for bundling with Webpack, Rollup or etc.
npm install ol ol-rotate-feature
```
Or add from CDN:
```html
// plugin exports global variable RotateFeatureInteraction
// in addition it also exported to `ol.interaction.RotateFeature` field (for backward compatibility).
```
### Options
| Option | Type | Description |
| :-------- | :------------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| features | _ol.Collection_ | The features the interaction works on. **Required**. |
| style | _ol.style.Style | Array<ol.style.Style> | ol.style.StyleFunction | undefined_ | Style of the overlay with interaction helper features. |
| angle | _number | undefined_ | Initial angle in radians (positive is counter-clockwise), applied for features already added to collection. Default is `0`. |
| anchor | _number[] | ol.Coordinate | undefined_ | Initial anchor coordinate. Default is center of features extent. |
| condition | _module:ol/events/condition~Condition_ | A function that takes an `module:ol/MapBrowserEvent~MapBrowserEvent` and returns a boolean to indicate whether that event should be handled. Default is `module:ol/events/condition~always` |
### Methods
```js
// Set current angle of interaction features.
RotateFeatureInteraction.prototype.setAngle(angle : number)
```
```js
// Returns current angle of interaction features.
RotateFeatureInteraction.prototype.getAngle() : number
```
```js
// Set current anchor position.
RotateFeatureInteraction.prototype.setAnchor(anchor? : number[] | ol.Coordinate)
```
```js
// Returns current anchor position.
RotateFeatureInteraction.prototype.getAnchor() : number[] | ol.Coordinate | undefined
```
### Events
All events triggered by the interaction are instances of `RotateFeatureEvent`.
##### Members
- **features** _ol.Collection_ The features being rotated.
- **angle** _number_ Current angle in radians.
- **anchor** _ol.Coordinate_ Current anchor position.
| Event | Arguments | Description |
| :---------- | :------------------- | :----------------------------------- |
| rotatestart | _RotateFeatureEvent_ | Triggered upon feature rotate start. |
| rotating | _RotateFeatureEvent_ | Triggered upon feature rotating. |
| rotateend | _RotateFeatureEvent_ | Triggered upon feature rotation end. |
### Example usage:
```js
import { Map, View, Feature } from 'ol'
import { Tile as TileLayer, Vector as VectorLayer } from 'ol/layer'
import { OSM as OSMSource, Vector as VectorSource } from 'ol/source'
import { Point, LineString, Polygon } from 'ol/geom'
import { Select as SelectInteraction } from 'ol/interaction'
import RotateFeatureInteraction from 'ol-rotate-feature'
const point = new Feature({
name: 'point',
geometry: new Point([ 2384267.0573564973, 7557371.884852641 ])
})
const line = new Feature({
name: 'line',
geometry: new LineString([ [ -603697.2100018249, -239432.60826165066 ], [ 4190433.20404443, 2930563.8287811787 ] ])
})
const polygon = new Feature({
name: 'polygon',
geometry: new Polygon([ [
[ -14482348.171434438, 6661491.741627443 ],
[ -9541458.663080638, 6221214.458704827 ],
[ -11473786.738129886, 3300708.4819848104 ],
[ -14482348.171434438, 6661491.741627443 ]
] ])
})
const map = new Map({
view: new View({
center: [ 0, 0 ],
zoom: 2
}),
layers: [
new TileLayer({
source: new OSMSource()
}),
new VectorLayer({
source: new VectorSource({
projection: 'EPSG:33857',
features: [ point, line, polygon ]
})
})
],
target: 'map',
projection: 'EPSG:3857'
})
const select = new SelectInteraction()
select.getFeatures().extend([ point, line, polygon ])
const rotate = new RotateFeatureInteraction({
features: select.getFeatures(),
anchor: [ 0, 0 ],
angle: -90 * Math.PI / 180
})
rotate.on('rotatestart', evt => console.log('rotate start', evt))
rotate.on('rotating', evt => console.log('rotating', evt))
rotate.on('rotateend', evt => console.log('rotate end', evt))
map.addInteraction(select)
map.addInteraction(rotate)
```
Example of usage in Browser environment in [test/umd.html](https://github.com/ghettovoice/ol-rotate-feature/tree/master/test/umd.html).
Getting total angle or last anchor coordinates after rotation:
```js
rotate.on('rotateend', evt => {
// get total angle in degrees
console.log(evt.angle + ' is '+ (-1 * evt.angle * 180 / Math.PI ) + '°')
// get last anchor coordinates
console.log(evt.anchor)
})
```
## License
MIT (c) 2016-2024, Vladimir Vershinin