On 6/29/2016 12:31 PM, Mojca Miklavec wrote:
Hi,
I want to play with CNC and don't yet have any experience with CAD
software (nor the licence for the expensive ones) other than perhaps
some Blender, so I decided to try to use the super ugly route with
metapost -> svg -> dxf -> g-code
for the first time.
I have a few questions.
(1) I love Hans' shortcuts in metafun, but I seem to remember that things like
input metafun;
or perhaps
input mp-tool;
used to work, so that I don't have to remember to use
mpost -mem=metafun my-drawings.mp
when compiling the graphics.
Did the method with "input" ever work (or is it supposed to work)? Now
I'm getting a bunch of weird errors.
I would love to specify everything in the source file and then just
call mpost. If that doesn't work, that's fine, I can still add
"-mem=metafun", but ...
input metafun.mpiv ;
(2) I guess that using "raw metapost" is the only sane way to generate
SVG. If I use metapost inside ConTeXt that's probably not going to
work, right?
(3) Is there any way to convince the SVG output mode to generate something like
<svg ... width="100.0mm" height="100.0mm" ... >
rather than
<svg ... width="283.46456692913387" height="283.46456692913387" ... >
because the program I use to convert SVG to DXF has troubles
interpreting "points" properly. I read somewhere that they assume 90
points per inch because that's Inkskape's default.
why not just
\startMPpage
whatever you want
\stopMPpage
and then use mudraw (mutools) to go from pdf to svg (that's what i do
when i need svg)
(4) Does anyone have a better proposal for conversion into DXF (or
G-code)? I'm currently playing with FreeCAD and I've seen some
tutorials showing that AutoCAD can open PDF directly, but I don't want
to buy AudoCAD just for the sake of converting files.
(Not to mention that FreeCAD's SVG importer crashes when reading
output from MetaPost unless I manually remove parts of the SVG, but
that's an unrelated problem that I'm somehow able to overcome.)
Thank you,
Mojca
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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the
Wiki!
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webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
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