[NTG-context] Filter Module with Openscad

[NTG-context] Filter Module with Openscad

[Jeroen via ntg-context]

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I am using OpenSCAD to create drawings with the filter module with the
following MWE:

\usemodule[filter]
\defineexternalfilter[openscad]
  [filtercommand={/context/openscad/openscad -o \externalfilteroutputfile},
   output={\externalfilterbasefile.png},
   cache=force,
   readcommand=\ReadImage]
\define[1]\ReadImage{\externalfigure[#1]}

\starttext
\startopenscad
  square(4,2);
\stopopenscad
\stoptext

This works fine. I now want to use the following options added to the
command line: --view axes,edges,scales --viewall

When I create an Openscad file test.scad, I can run it fine with the
following command line at a CLI window:

openscad.com test.scad -o test.png --view axes,edges,scales --viewall

When I add this to the filtercommand as following

[filtercommand={/context/openscad/openscad -o
\externalfilteroutputfile --view axes,edges,scales --viewall}

I cannot get it to run. Is there anything I am missing?

Thanks
Jeroen

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Re: [NTG-context] Filter Module with Openscad

[Aditya Mahajan via ntg-context]

On Wed, 26 Apr 2023, Jeroen via ntg-context wrote:

> I am using OpenSCAD to create drawings with the filter module with the
> following MWE:
> 
> \usemodule[filter]
> \defineexternalfilter[openscad]
>   [filtercommand={/context/openscad/openscad -o \externalfilteroutputfile},
>    output={\externalfilterbasefile.png},
>    cache=force,
>    readcommand=\ReadImage]
> \define[1]\ReadImage{\externalfigure[#1]}
> 
> \starttext
> \startopenscad
>   square(4,2);
> \stopopenscad
> \stoptext
> 
> This works fine. I now want to use the following options added to the
> command line: --view axes,edges,scales --viewall
> 
> When I create an Openscad file test.scad, I can run it fine with the
> following command line at a CLI window:
> 
> openscad.com test.scad -o test.png --view axes,edges,scales --viewall
> 
> When I add this to the filtercommand as following
> 
> [filtercommand={/context/openscad/openscad -o
> \externalfilteroutputfile --view axes,edges,scales --viewall}
> 
> I cannot get it to run. Is there anything I am missing?

My guess is that you need:

[filtercommand={/context/openscad/openscad -o \externalfilteroutputfile\space --view axes,edges,scales --viewall}

this is because any macro \something gobbles the space after that. 

Aditya
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