Creating a Custom Layer

Procedure

1. In your project, create a file called SampleContextMenuEntryLayer.ts.

2. Add a class that extends from the CustomLayer class by running:

   // SampleContextMenuEntryLayer.ts
   import {CustomLayer} from "@navvis/ivion";
   
   export class SampleContextMenuEntryLayer extends CustomLayer
   {
   }

3. Override the onContextMenu() method so that the custom layer can provide a context menu entry to the user by running:

   // SampleContextMenuEntryLayer.ts
   import {
     ContextMenuEntryInterface, CustomLayer,
     MouseEventCoordinatesInterface
   } from "@navvis/ivion";
   
   export class SampleContextMenuEntryLayer extends CustomLayer
   {
     public onContextMenu(pos: MouseEventCoordinatesInterface): ContextMenuEntryInterface
     {
     }
   }