[Haskell-cafe] ANN: Graphics.OpenSCAD

Mike Meyer mwm at mired.org
Tue Jun 24 12:14:32 UTC 2014

Graphics.OpenSCAD provides an algebraic data type for creating OpenSCAD 3d
models, as well a a function to generate an OpenSCAD program from a data

OpenSCAD is a "programmers" CAD tool. It provides a declarative language
for 3d models with a primitive functional language for doing computation.
The Graphics.OpenSCAD module tries to preserve the declarative parts by
providing tools for building data structures that match the OpenSCAD
declarative models, then embedding that in a powerful, modern functional

The critical problem with OpenSCAD is the error handling. At it's best, it
will say "syntax error" and provide sufficient location information to
easily find the error. At times, the location information points outside
the file. Errors in dealing with variables may have no error messages, or
messages that are easy to overlook, resulting in models that are radically
different from what was expected with no way to determine the problem
except searching the complete program text.

Graphics.OpenSCAD attempts to solve that by leveraging Haskell's type
system as far as possible. While not every run-time OpenSCAD error can be
detected in Haskell, as many as possible are.

Hackage page with pointers to source and documentation:
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