Jeff,
I have done a lot of that type of thing on my custom user interface as well.
While it does not preprocess G-Code at this point, it does have the
capability to covert HPGL and DXF (well to be fair, DXF still needs some
work) formats to G-Code, as well as convert jpg and bmp to g-code (raster
pattern) and BW jpg or bmp to vector G-Code.
I was really looking at it from the perspective of a more general solution
which would work with any of the user interfaces. But as far as a
preprocessors go, there is no reason it has to be exclusively G-Code. It
certainly could be any file format translated into G-Code.
Assuming the preprocessor portion is resolved, then the next problem is how
to get the post processed code back to the respective user interfaces so
that it displays the code which is actually being executed.
Regards,
Eric
The AXIS user interface has a capability to preprocess files into gcode.
This is in the manual.
If your *starting point* is also gcode, then you can process it into a
simpler and more regular representation with the 'rs274' binary. This is
probably not documented anywhere yet.
If test.var and test.tbl exist, here's how to process flowsnake.ngc into the
'canon call' format:
rs274 -v test.var -t test.tbl -g flowsnake.ngc and here are a few lines
from the output:
7 N..... START_SPINDLE_CLOCKWISE()
8 N..... STRAIGHT_TRAVERSE(0.0000, 0.0000, 1.0000, 0.0000, 0.0000,
0.0000)
9 N..... STRAIGHT_TRAVERSE(0.2500, 1.0000, 1.0000, 0.0000, 0.0000,
0.0000)
10 N..... SET_FEED_RATE(10.0000)
(looks like rs274 doesn't print a whole 9 axes of information, it's stuck
back at 6 axes)
An *extensible* program to turn this "canon" representation back into gcode
would make for some neat possibilities such as the one you're contemplating!
This means you have to give up some of the more interesting parts of gcode,
such as infinite loops and things that branch on the result of probes or
other external inputs, but them's the breaks.
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