ol/interaction/Snap






### multi layer
> [Snapping to features on multiple layers](https://stackoverflow.com/questions/58025791/snapping-to-features-on-multiple-layers)

### example
> [Draw and Modify Features](https://openlayers.org/en/latest/examples/draw-and-modify-features.html)

### api
> [Class: Snap](https://openlayers.org/en/latest/apidoc/module-ol_interaction_Snap-Snap.html)





