Is there a easy way to show all fonts, how they looks and name?

Thomas Leonard Gertz
Kerteminde, Danmark

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would it be easier to have a builtin name like $fontnames containing all
font names, so it is easy for users to come up with examples themselves ?

$  Runsun Pan, PhD $ libs: scadx , doctest , faces ( git ), offline doc ( git ), runscad.py ( 2 , git ), editor of choice: CudaText  ( OpenSCAD lexer ); $ Tips ; $ Snippets

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wouldn't a feature like this violate the iron law that OpenSCAD doesn't allow
for queries?

As soon as this law softens I would immediately propose variables like:

• $imports - reflect all imports as list_of(list_of(verts,faces))
• $cmdline - reflect and set all command line arguments
• $filename - reflect and set the actual filename for exports
• $uselibs - reflect and set used libs and their order
• $includelibs - reflect and set included libs
• $functions - reflect and set resolutionpaths of functions
• $modules - reflect resolutionpaths of modules
• $constants reflect resolutionpaths of constants
• $backgroundimage set image as background in viewport
• $echo2clipboard - stream text into clipboard
  ...
• $code - reflect and set(!) the actual code

and so on.

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I forgot an important one:
$animation - read and set(!) animation parameters

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I don't know about iron laws of OpenSCAD, but, for those queries you
mentioned, I want them all lol ...

Also add these:

$this => the name of func/mod in the current scope (but, I believe this is
incorporated into your $functions/$modules)
$arguments => the name and value of arguments inside a func/mod.

To me, this 2nd one seems to be already a feature in OpenSCAD, as shown in
echo():

echo(abc=123);

The OpenSCAD is able to catch and present the argument name, "abc". Why not
release this feature to user functions ?

$  Runsun Pan, PhD $ libs: scadx , doctest , faces ( git ), offline doc ( git ), runscad.py ( 2 , git ), editor of choice: CudaText  ( OpenSCAD lexer ); $ Tips ; $ Snippets

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Most of them shouldn't be read-only. As a Windows user for example I find it
too inconvenient to write shell scripts, thus I hardly ever use cmdline
syntax for OpenSCAD. So I would love a possiblity to set cmdline args from
within OpenSCAD.

As for the new prefix, my keyboard tells me there are not many characters
left without OpenSCAD semantics.
@ ~  § € ' ^ ² ³ ° µ

Maybe also $$ can be used, which is currently not allowed.

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function f(len,width)=
[ ["len",len], ["width",width] ];

??

Admin - email* me if you need anything, or if I've done something stupid...

• click on my MichaelAtOz label, there is a link to email me.

Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. Obviously inclusion of works of previous authors is not included in the above.

The TPP is no simple “trade agreement.”  Fight it! http://www.ourfairdeal.org/  time is running out!

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MichaelAtOz,

in OpenSCAD you can call functions and modules with an unlimited number of
arguments - e.g. you don't get an error with misspelled paraemeter names,
which can be nasty problem when it comes to tracking an error.
However, the good news (with respect to $arguments) is: Those arguments that
are not defined in the prototype are currently ignored. The bad news is:
they are not accessible at all. So you can't implement functions and modules
with a variable number of arguments unless you pack them into a list, parse
this list and solve the naming problem.

myfunc(1,2,3,a=4,b=5,c=6);

module myfunc()  echo("works but no args declared");

So the new $arguments variable would allow for:

module myfunc()  echo("works withargs ", $arguments);

and give access to any provided parameters and its names which can also be
"$argument_x" if anonymous, as is the case in the call
myfunc(1,2,3,a=4,b=5,c=6);

But let me mention that OpenSCAD already provides an even wierder mechanism.
You don't have to declare parameters at all. Why not just use them and trust
on the caller?

myfunc(1,2,3,a=4,b=5,c=6);

module myfunc()  echo("works even no args were declared: ", a, b, c);

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I like some of the suggestions for adding some new system special variables… so I just thought I’d put forward my own.

$system … returns the system time in seconds a la unix.

I’m sure you’re all a lot more organized than I am in making your creations… but for my part I’m often looking at a desktop (literal… not virtual) of a whole bunch of test pieces I’ve printed and unable to tell which one is which.
I’ve taken to embedding some text in my models with a ‘build number’ but naturally I keep on forgetting to update the variable I use to set the build number. <sigh>
If there were a system special variable like $systime then I could easily massage that into a unique string variable to be included in my designs so that in the prototyping stage I’d be able to differentiate between all the test pieces I’d printed off.

Just my two cents.

Note for GitHub users https://github.com/openscad/openscad/issues/380, I'll
add a pointer back to this discussion.

Admin - email* me if you need anything, or if I've done something stupid...

• click on my MichaelAtOz label, there is a link to email me.

Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. Obviously inclusion of works of previous authors is not included in the above.

The TPP is no simple “trade agreement.”  Fight it! http://www.ourfairdeal.org/  time is running out!

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