Maxime Lemonnier wrote:
> Hi,
>
> Have you looked at how axis is coded?
>
> The whole application holds in one big python file plus a few so-called
> "libs"
> in the lib directory. Right now, I have two problems that kind of block me
> from starting out :
>
> - What/where is the "algorithm" that converts the gCode to opengl commands?
> - How are the extents computed and displayed?
>
>
Top level is "open_file_guts" function in axis.py.
It creates AxisCanon (subclass of GLcanon "glcanon.py") class, which
will receive callback for each g-code processed by interpreter, which is
fed with lines from g-code file.
--------------
o.g = canon = AxisCanon(o, widgets.text, i, progress)
...
result, seq = gcode.parse(f, canon, unitcode, initcode) /*
gcode is defined in gcodemodule.c */
--------------
After that canon will contain several lists of lines (arcs are converted
to lines too),
thus it is possible to calculate extents:
-------------------------
canon.calc_extents()
canon.calc_notool_extents()
-------------------------
and create OpenGL draw lists:
------------------------
make_main_list(canon)
make_selection_list(canon)
------------------------
Hope this helps,
Regards,
Alex.
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