If you, like me, need a simple tool for create a rotated map with routes, it can be helpful.

1. Just clone/download and launch under any web-server. Not sure it will work from local file, never tested. OR just open https://openlayers-route-editor.netlify.com
2. Click at map, create / edit route. Route points will be shown in textarea below map.
3. Commands:

• Save - save current route to local storage
• Copy - copy JSON array with coordinates of current route to clipboard
• Load - load route from local storage and show it on map

A. File openlayers-draw.js. Go to very bottom of file, there is initializing of map.

1. There is mine Bing maps API key. Do not use it at production.
2. Change language of map labels by changing field culture.
3. Change zoom and rotation variables

B. TBC...

coord = ol.proj.transform(coord, 'EPSG:3857', 'EPSG:4326'); var lon = coord[0]; var lat = coord[1];

1. OpenLayers API http:https://openlayers.org/en/latest/apidoc/index.html
2. OpenLayers examples https://openlayers.org/en/latest/examples/index.html

OpenLayers examples page is quite large. There is more useful ones.

1. Animation http:https://openlayers.org/en/latest/examples/feature-move-animation.html
2. Measure http:https://openlayers.org/en/latest/examples/measure.html
3. Icon http:https://openlayers.org/en/latest/examples/icon.html
4. Color manipulation -- works very slow on Bing map http:https://openlayers.org/en/master/examples/color-manipulation.html
5. Image filters: sloow too http:https://openlayers.org/en/latest/examples/image-filter.html?mode=raw
6. HereMaps: TerrainDay http:https://openlayers.org/en/latest/examples/here-maps.html
7. Vector layer http:https://openlayers.org/en/latest/examples/image-vector-layer.html
8. Transform http:https://openlayers.org/en/master/examples/layer-extent.html?q=tile