Leonardo Zide
cd6cf53c7b
A null framebuffer readback was treated as empty geometry, so a parts list could retain a blank entry or silently omit it after rendering failed. The QImage return type also conflated an empty inventory with an error. Return lcResult<QImage> and abort on failed thumbnail readback after framebuffer and renderer cleanup. Report framebuffer creation and image allocation failures explicitly while preserving successful empty inventory and unavailable-geometry behavior. HTML export propagates the error text; the instructions UI clears its stale image and displays a warning parented to the scene's view. Validation: full debug build and whitespace checks passed. A temporary OpenGL fault-injection harness covered first and later readback failures with both missing-parts policies, framebuffer creation failure, successful empty results, and restoration of caller context, surface, and framebuffer bindings. The warning dialog was not exercised interactively.
About LeoCAD
LeoCAD is a CAD program for creating virtual LEGO(R) models. It's available for free under the GNU Public License v2 and works on the Windows, Linux and macOS Operating Systems.
Installation
You can download the latest version of LeoCAD and its Parts Library from the main website at https://www.leocad.org
It's recommended that you install the latest drivers for your video card since LeoCAD uses OpenGL to take advantage of hardware acceleration for rendering.
LeoCAD for Windows
Download the latest LeoCAD-Windows.exe to your computer, double click on the icon to launch the installer and follow the instructions.
LeoCAD for macOS
Download the latest LeoCAD-macOS.dmg to your computer, double click on the icon to open the archive, copy LeoCAD.app to your Applications folder and then launch it from there.
LeoCAD for Linux
There are multiple ways to install LeoCAD on Linux.
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Snap Store
You can find LeoCAD in your distribution's Snap Store. Alternatively, you can enter
sudo snap install leocadto install it using the command line. -
AppImage
Download the latest LeoCAD-Linux.AppImage, make the file executable (
chmod +x) and run it. -
Flatpak
You can also install LeoCAD releases as a Flatpak from Flathub: https://flathub.org/apps/details/org.leocad.LeoCAD
Note: there might be a delay for new releases to appear there. If you have it already installed, it will be updated.
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From source
If you prefer to compile LeoCAD yourself, go to the GitHub releases page at https://github.com/leozide/leocad/releases/latest and download the source archive from there. If you do not already have a Parts Library installed, you will need to download one and follow the installation instructions. More information on how to compile your own executable is available in the Documentation section of https://www.leocad.org
Online Resources
New users should read the online tutorial located at https://www.leocad.org/docs/tutorial1.html to learn how to use LeoCAD.
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Website: https://www.leocad.org
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GitHub page: https://github.com/leozide/leocad
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Unstable builds: https://github.com/leozide/leocad/releases/tag/continuous
Legal Disclaimer
LEGO(R) is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this software.