GeoMESH LT offers a powerful suite of tools for working with terrain models inside Autodesk® AutoCAD®. At the heart of the software lies the GMESH command, which allows you to select terrain points (AutoCAD POINT elements) and create detailed triangulated irregular networks, referred to as terrain meshes. These meshes, along with the original points, are organized on dedicated GeoMESH LT layers.

The generation process relies on a sophisticated Constrained Delaunay Triangulation algorithm.

To visualize terrain variations, the GMCONTOUR command interpolates the mesh surfaces and draws contour lines at defined height intervals. Base height is always 0.0 and increments are determined by the system variable CINCR.

With these powerful tools, GeoMESH LT enhances the capabilities of AutoCAD, offering intuitive workflows, professional-grade outputs, and the flexibility to meet a wide range of geospatial and civil engineering needs.

The installer that was run when you downloaded this app/plugin from the Autodesk App Store will start installing the app/plugin. Or, simply double-click the downloaded installer to install the app/plugin. You may need to restart your Autodesk product to activate the app/plugin. To uninstall this plugin, exit the Autodesk product if you are currently running it, simply rerun the installer and select the "Uninstall" button. Or click Control Panel > Programs > Programs and Features (Windows 10/11) and uninstall as you would any other system application.

The following are important notes for all GeoMESH LT commands:

• GeoMESH LT stores all GeoMESH LT system variables in the current drawing. This is NOT compatible with GeoMESH.
• GeoMESH LT writes generated data in its own GeoMESH LT layers. Following default layer names and layer colors are used for this:
  - Terrain Points: Name: GM_POINT; Color: green
  - Terrain Mesh: Name: GM_MESH; Color: grey (252)
  - Contours: Name: GM_CONTOUR; Color: yellow
  All GeoMESH LT layer properties can be modified using standard AutoCAD layer commands. GeoMESH LT recognizes these and continues to use these modified layers.
• Changed settings of GeoMESH LT system variables and GeoMESH LT layers can be saved in a separate AutoCAD file template. They are then available in modified form for other projects using this template.
• By default, GeoMESH LT groups all generated data. Single groups are formed for the individual program results (e.g. terrain points, terrain meshes, contour lines, etc.).
• This software is based part on CDT (C++ library for constrained Delaunay triangulation): Copyright © 2019 Leica Geosystems Technology AB, Copyright © The CDT Contributors, Licensed under the MPL-2.0 license, https://github.com/artem-ogre/CDT.

• GeoMESH LT is currently only available in English.
• GeoMESH LT is single threaded.
• GeoMESH LT is limited to 10000 terrain points (GMESH) or 10000 mesh elements (GMCONTOUR).
• GeoMESH LT uses only the AutoCAD world coordinate system (WCS).