Preview Mode (Viewer)
Preview Mode is for browsing an open LCC scene. It supports basic navigation, viewing viewpoints and scene reports, and provides distance and area measurement capabilities.
Interface Overview

Preview Mode Interface
View Toolbar
| # | Button | Description |
|---|---|---|
| 1 | Height Filter | Enable/disable Z-axis height filtering |
| 2 | Screenshot | Capture the current view |
| 3 | Mode Toggle | Roaming / Pivot / Avatar |
| 4 | Point Cloud Toggle | Switch between point cloud and Gaussian rendering |
| 5 | Return to Spawn Point | Reset camera to the initial position |
| 6 | Camera Speed | Adjust camera movement speed |
| 7 | Grid | Show / hide grid |
| 8 | Capture Trajectory | Show / hide capture trajectory |
| 9 | Environment Data | Toggle environment data display |
| 10 | Collision | Enable / disable collision |
Professional Toolbar
| # | Button | Description |
|---|---|---|
| 1 | Viewpoints | View / jump to tour viewpoints |
| 2 | Annotation List | View / jump to annotations (supports portal interaction) |
| 3 | Measurement | Temporary measurement (not saved) |
| 4 | Scene Report | Open the scene report (hidden when no report exists) |
View Toolbar Details
Height Filter
Control model visibility by adjusting the Z-axis height range.
- Click the height filter button to enter height filter mode
- Drag the top/bottom sliders to adjust the height range
- Click the height filter button again to exit
Screenshot
Capture the current view and save as an image file.
Mode Toggle
Three navigation modes are available:
- First-Person Mode: Walk freely through the scene from a first-person perspective
- Pivot Mode: Orbit around a target point for observation
- Avatar Mode: Roam the scene as a virtual character
Return to Spawn Point
Quickly reset the camera to the spawn point position.
Camera Speed
Adjust camera movement speed for roaming and pivot modes.
How to adjust:
- Toolbar slider: drag to adjust, range 1–100
- Shortcut:
Ctrl+ mouse wheel
Professional Toolbar Details
Viewpoints
Open the viewpoints tool. Click a tour thumbnail to jump to the corresponding angle.
Annotation List
View annotation content (photos, videos, links, text, etc.) in the scene. In V2.2, clicking a portal automatically jumps to the target scene/position.
- Click Annotations in the toolbar to open the annotation list
- Hover over a scene annotation to see a summary
- Click a portal → automatically jumps to the target scene and position
- Two-way portals show a return button → click to go back to the configured return target
Measurement
View measurement data.
Scene Report
View the project's generated reports, including floor plans, viewpoints (screenshots with dimensions/area info), and more. This button is hidden when no report exists.