pieloha.blogg.se - Brl cad scripting

BRL CAD SCRIPTING HOW TO
BRL CAD SCRIPTING FULL
BRL CAD SCRIPTING SOFTWARE
BRL CAD SCRIPTING CODE

Simple button controller with 3d-printed parts When the scripts down below are copied and pasted into openscad it will let you create custom characters and then generate your STL files.

BRL CAD SCRIPTING SOFTWARE

To use the scripts you can download a free piece of CAD software called openscad that lets 3D objects be designed with a scripting language. What modelling software should I try out instead? OpenSCAD - If you are happy programming you can make some great things, excellent for parametric models, but not the easiest thing to make a simple box with. OpenSCAD has a completely different approach to modelling than other programs, it is a 3D modelling programming language. Those binaries are in production use in a variety of environments on other Linux platforms without issue, but they are merely the canonical tclsh/wish wrappers included with Tcl/Tk preconfigured to load commands - they are deprecated and will be going away in a future release.If you've tried a few modelling programs and found them unintuitive then perhaps you should try out OpenSCAD ( ). The btclsh/bwish binaries not working on latest Ubuntu is not a known issue but unlikely related to preprocessor conditionals and more likely related to the version of the runtime system libraries. It's not as flexible as /bin/sh execution and there are some pedantic gotchas / limitations as it's still not a shell but it is a way to invoke mged without a controlling shell. You can't directly invoke mged because it's simply not a shell, but the system 'env' command was specifically designed for pass-through execution or when you need to specify arguments (both of which are the case here). What you were probably looking for automatic shell script invocation is something like this: #!/usr/bin/env mged -c file.g source There is also a more comprehensive way with Python, which I linked to earlier and requires some additional setup.

BRL CAD SCRIPTING FULL

If you are specifically looking for object support, it may helpful to know that mged's full Tcl environment will allow you to use incrTcl (which is object-oriented Tcl) - you called this the "native" option.

Whether you choose to create geometry via shell scripting, Python, or some other language is mostly a matter of familiarity and preference. Please do share your bash script(s) some time - the sgi cube script was written to inspire and provide example for exactly this kind of use.

BRL CAD SCRIPTING HOW TO

OK so that is obviously something to take to the dev list or report as a bug if there is no easy answer.ĭoes anyone have any more suggestions how to write a script without dirty hacks/additional lanuages?

BRL CAD SCRIPTING CODE

Seems quite possible as the C source code has a lot of C preprocessor conditionals that could make it easy to break (src/bwish/main.c) and searching online for this issue did not reveal much evidence of people using these commands.

btclsh/bwish (from BRL-CAD_7.26.0.2_Linux_x86_64.tar.gz under Ubuntu 16.04) stopped working at some point and no one noticed.

there is something simple but probably a bit weird that I must do to execute one of the documented commands.

It should surely be possible to use either mged or btclsh to run "native" scripts from the command line.īut its bugging me that I cannot just write an executable script with a #! line e.g. I would also like to better understand the "native" options. generate tables of values in text to stdout. On the other hand there seem to be a lot of BRL executables commands that would fit the unix scripting philosophy i.e. Sh/bash do not have object oriented features or anything other than basic support for data structures (namely arrays, maps) but I also found evidence online of python and Java support so am wondering if I may eventually choose that route instead. I am happy to publish it but will maybe tweak it a bit more first and am not convinced it is really the way to go until I have explored other options. The SGI script is very helpful and I have used it as the basis for a bash script that uses a co-process to run mged (because I have done similar things successfully in bash recently). For now as I found nothing there and it is clearly a user question. I have found options but also noticed a few surrounding issues which might be discussed on the dev list. I have just started trying to use BRL CAD to plan DIY projects and as I'm a software developer its natural to use this approach rather than interractive editing.