> ## Documentation Index
> Fetch the complete documentation index at: https://docs.3dpreppro.com/llms.txt
> Use this file to discover all available pages before exploring further.

# 3D viewer controls

> Navigate around your model with mouse and touch

## Camera controls

| Action             | Mouse              | Trackpad                |
| ------------------ | ------------------ | ----------------------- |
| **Rotate** (orbit) | Left click + drag  | Two-finger drag         |
| **Pan**            | Right click + drag | Shift + two-finger drag |
| **Zoom**           | Scroll wheel       | Pinch in/out            |

<Tip>
  Double-click on any part of the model to center the camera on that area.
</Tip>

## ViewCube

<Frame>
  <img src="https://mintcdn.com/alphaworks/4GKl9wpYAwI5IRWf/images/editor/viewcube.png?fit=max&auto=format&n=4GKl9wpYAwI5IRWf&q=85&s=afdbcca7746754eaee4965e211229b69" alt="ViewCube showing Front, Top, and Right faces" width="408" height="374" data-path="images/editor/viewcube.png" />
</Frame>

The **ViewCube** is a small cube in the corner of the viewport. It shows your current viewing angle and lets you quickly snap to standard views:

* Click a **face** (Front, Back, Left, Right, Top, Bottom) to snap to that standard view

To reach a diagonal or isometric angle, drag the ViewCube's rotation rings or orbit the camera freely.

## Display toggles

The editor header has a row of icon buttons that toggle how the model is drawn. Each one is independent, so they combine freely rather than switching between exclusive modes:

* **Grid** — Show or hide the ground grid
* **Show Edges** — Overlay a wireframe on the surface, useful for checking geometry density
* **Show Textures** — On by default; turn it off to render the model as flat grey for inspecting shape
* **Show Edge Analysis** — Highlight boundary edges (green) and non-manifold edges (purple)
* **Shell view** — Cycle through highlighting and exploding the model's separate meshes (shells)

## Side-by-side comparison

After a repair, the editor can show the **original** and **repaired** models next to each other. By default both views rotate together, while zoom and pan stay independent per view, making it easy to spot exactly what changed. Use the lock button between the two views to switch between **Rotate Together** and **Rotate Separately**.

## Interactive picking

Some tools let you click directly on the model:

* **Measure tool** — Click to place measurement points
* **Label tool** — Click to set the label position
* **Cut tool** — Drag the cutting plane gizmo to position it

When a picking tool is active, the cursor changes to a crosshair.