---
title: "Layers in NavVis IVION"
slug: "layers-1"
tags: ["Event Handler", "NavVis IVION"]
updated: 2024-03-01T14:08:56Z
published: 2024-03-01T14:08:56Z
canonical: "knowledge.navvis.com/layers-1"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://knowledge.navvis.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Layers

In NavVis IVION, the Panorama view and Map view have different layers.

A layer behaves like a view controller. It contains event handler methods that can be overridden. When a user input event is triggered within a view, the corresponding event handler method is called for each layer within the view.

To create custom context menu entries, you have to respond to the `onContextMenu `user input event.

> [!NOTE]
> **Note:**A complete list of event handler methods for the `CustomLayer` class is available [here](https://ivion-api.docs.navvis.com/latest/reference/classes/customlayer.html).

In the panorama view, you can explore your data in a seamless experience. In this view, you can see both panoramic images and point clouds. By default, the main view of the NavVis IVION interface shows the panorama view.

In the map view, you can see the 2D maps of the site and where the site is located on a world map. By default, the map view is displayed in the mini view, which is the small window in the bottom right corner of the NavVis IVION interface. Clicking on the two small arrows on the bottom right corner of the screen switches between panorama view and map view.