CGX FBD VS Code Extension

VS Code extension providing syntax highlighting and language support for CGX .fbd pre/post processor script files used with the CalculiX finite element analysis suite.

Features

• Syntax highlighting for CGX .fbd script files
• Token recognition for:
  • Commands (pnt, line, surf, body, mesh, send, view, plot, …)
  • Geometry and meshing keywords
  • Parameters and identifiers
  • Numeric constants (integer, decimal, scientific notation)
  • Comments (#)
• Code folding by logical script sections

Supported File Types

What is CGX?

CGX (CalculiX GraphiX) is the pre/post processor bundled with the CalculiX open-source FEA package. It is used to:

• Pre-processing — generate geometry, define mesh topology, assign element types, boundary conditions, and export .inp files for the CalculiX solver (CCX)
• Post-processing — read solver result files and visualize deformations, stresses, and other field outputs

FBD scripts drive CGX non-interactively and are the primary authoring format for automated model pipelines.

Example .fbd File

# Define geometry points
pnt p1  0.0  0.0  0.0
pnt p2  1.0  0.0  0.0
pnt p3  1.0  1.0  0.0
pnt p4  0.0  1.0  0.0

# Define lines
line l1 p1 p2 10
line l2 p2 p3 10
line l3 p3 p4 10
line l4 p4 p1 10

# Define surface
surf s1 l1 l2 l3 l4

# Set element type and mesh
elty all he8
mesh all

# Export to CalculiX input file
send all abq

Building the Extension

npm install
npm run compile     # compile TypeScript → out/
npm run package     # compile + vsce package → .vsix

Press F5 in VS Code to launch the Extension Development Host for testing.

Related Projects

• AbqCCX INP VS Code Extension — syntax highlighting for CalculiX/Abaqus .inp solver input files

License

MIT — see LICENSE