---
title: "Region Grow Circle"
slug: "cyclone-3dr-regiongrowcirclec"
updated: 2026-09-07T11:51:19Z
published: 2026-09-07T11:51:19Z
canonical: "rcdocs.leica-geosystems.com/cyclone-3dr-regiongrowcirclec"
---

> ## 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.

# Region Grow Circle

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

This command extracts a circle according to a seed point and visible objects.

> [!TIP]
> ### Requirements
> 
> To extract a circle, launch the command and click a seed on objects.

---

1. You can force the **center**, the **normal** or the **radius**:
  1. Enter the XYZ coordinates in the edit controls or click on the icon ![AddPoint.svg](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/AddPoint.svg) to click a [point](/v1/docs/cyclone-3dr-enteringpointprocedure) in the scene.
  2. Enter the XYZ values of the vector in the edit controls or click on the icon ![Normal1.svg](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/Normal1.svg) to define a [direction](http://wiki-tdg.eu.hexagonmetrology.com:8090/display/Hlp2025x1/DefineNormalDirection) in the scene.
2. Set the **Extraction tolerance**.
3. Click a seed point.

> [!WARNING]
> ### Notes
> 
> - The **Extraction tolerance** corresponds to the extraction of the plane which contains the geometry (Extraction performed in two steps: plane and contour extractions).
> 
> - Once a seed point is clicked, the computation is launched. You can cancel the current computation by pressing **ESC.**
> - Sometimes, when you compute a geometry, an incorrect extraction may occur with the point you click (ie noisy point). In that case, delete the latest point with **DEL** and click a new point
> - You can't lock all the properties at once: prefer the corresponding draw command.