FreeCAD/FreeCAD

Measurement: Clipping Plane cuts out the Measurements

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#22,542 opened on Jul 17, 2025

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Good first issueMod: CoreMod: MeasurementTopic: Clipping PlanesTopic: User InterfaceType: Feature

Description

Is there an existing issue for this?

  • I have searched the existing issues

Problem description

Measurements should not be cut out by the Clipping plane (or it could at least have an option to disable that on the clipping plane widget)

Full version info

OS: Ubuntu 25.04 (ubuntu:GNOME/ubuntu-xorg/xcb)
Architecture: x86_64
Version: 1.1.0dev.42564 (Git)
Build date: 2025/07/14 18:51:42
Build type: Release
Branch: main
Hash: dc2f2374b6ab3e3381653fad125b1b619bb49f7c
Python 3.11.13, Qt 6.8.3, Coin 4.0.3, Vtk 9.3.1, boost 1_86, Eigen3 3.4.0, PySide 6.8.3
shiboken 6.8.3, xerces-c 3.2.5, IfcOpenShell 0.8.2, OCC 7.8.1
Locale: English/United States (en_US)
Navigation Style/Orbit Style/Rotation Mode: Touchpad/Trackball/Drag at cursor
Stylesheet/Theme/QtStyle: OpenDark.qss/OpenDark/
Logical DPI/Physical DPI/Pixel Ratio: 96/94.0767/1
Installed mods: 
  * Cables 0.2.1
  * CurvesWB 0.6.64
  * Assembly4 0.50.18
  * sheetmetal 0.7.24
  * DynamicData 2.74.0
  * InventorLoader 1.5.1
  * diff-tools 0.1.0
  * ose-piping
  * OpenTheme 2025.5.20
  * fasteners 0.5.38
  * osh-autodoc-workbench 0.2.3
  * OpticsWorkbench 1.2.2
  * lattice2 1.0.0
  * kicadStepUpMod 11.7.2

Subproject(s) affected?

Core

Anything else?

No response

Code of Conduct

  • I agree to follow this project's Code of Conduct

Contributor guide

Tech stack
cpppython
Domain
backend
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
C++FreeCAD development environmentQt basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Investigate the Clipping Plane implementation in FreeCAD, likely in src/Mod/Part or src/Mod/Mesh. Understand how measurements are rendered (possibly in src/Mod/Measure). Determine why clipping affects measurements and consider adding a property to disable clipping for measurement objects. Review any existing discussions or PRs related to clipping plane behavior.