---
title: "Unfold Cloud"
slug: "cyclone-3dr-unfoldcloudc"
updated: 2026-09-07T11:51:46Z
published: 2026-09-07T11:51:46Z
canonical: "rcdocs.leica-geosystems.com/cyclone-3dr-unfoldcloudc"
---

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

# Unfold Cloud

![CmdUnfoldCloud.svg](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/CmdUnfoldCloud.svg)

This command helps to unfold a cloud along a polyline. For instance, it is a helper function to generate one orthoimage for all frontages of a building.

> [!TIP]
> ### Requirements
> 
> Select one cloud and one polyline, then launch the command. If the polyline is not planar, this command will automatically project it on a plane according to the axis define in 1).
> 
> A linear geometry or a cad curve can be used instead of a polyline but they will be discretized automatically.

1. Define the axis which is by default to Z=1 for frontages applications. A horizontal axis is relevant for unfolding a roof or a ceiling.
2. Optionally, reverse the path orientation if it has the wrong one.
3. In case of a closed path, define the origin.
4. Select the points to unfold:
  1. Use **All points** when the content to unfold has been defined prior than launching this command.
  2. Use **Slice selection** to select the points to unfold by defining two buffer widths around the polyline. Define the **Left** and **Right** widths, then click **Preview the selection**.
5. In both case, note that points which cannot match the polyline are filtered out automatically.
6. Click **Preview**: the view switches to Front view to display the result.

> [!NOTE]
> ### Technical information
> 
> The first point of the polyline is used for the insertion point of the result.

> [!TIP]
> ### Practice
> 
> - [Exercise: unfold a cloud](/v1/docs/cyclone-3dr-basic-tutorial-unfold-a-cloud)
> - [Unfold a tunnel cloud](/v1/docs/cyclone-3dr-guided-workflow-unfold-a-tunnel-cloud)