---
title: "Planar contour"
slug: "cyclone-3dr-planarcontourc"
updated: 2026-09-07T11:51:31Z
published: 2026-09-07T11:51:31Z
canonical: "rcdocs.leica-geosystems.com/cyclone-3dr-planarcontourc"
---

> ## 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.

# Planar contour

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

The command allows extracting planar contours from meshes and clouds.

> [!TIP]
> ### Requirements
> 
> No selection is required. To extract the planar contours, click seed points on the visible clouds/meshes, then click Preview to run the extraction.

1. Set the **Extraction tolerance** (expected plane thickness).
2. Optionally, activate **Skip points whose normal differs from the plane normal** to improve points selection by filtering them with their normals. Note that computation time will increase.
3. The command extracts a plane once a seed point is clicked. You can cancel the current computation by pressing **ESC** or by clicking another point. You can do the computation on several starting points by clicking multiple points.
4. Optionally, you can add constraints to the plane extraction:
  1. a **Fixed point**.
  2. a **Fixed normal**.
5. If you are pleased with the extraction, click **Preview** to compute the contours of the **Extracted cloud**:
  1. You can either extract all contours or **only the closest contour** from the seed point.
  2. The **Planar contours** are displayed in yellow. They correspond to the **3D contours** projected on the extracted plane.
  3. The **3D contours** are displayed in red.
  4. Optionally, you can keep the corresponding **Extracted cloud**.

> [!TIP]
> ### Tips & Tricks
> 
> Press **DEL** key to remove the last created seed.