Filters

Maybe you just need to replace
PROGRAM=ExchangeXY
by
PROGRAM=ExchangeXY.sh

bkubicek wrote:

Maybe you just need to replace
PROGRAM=ExchangeXY
by
PROGRAM=ExchangeXY.sh

Nope...

.. and I has put two files (one without .sh) on dir.

ok, i am right now downloading git to get the filters to run myself.
I will be back..

Hm. So today, i dowloaded from git into a completely fresh directory, compiled and there was no filters menu.
anyway, I applied the patch by jeff epler, instead of mine.
it did not work with ubuntu 9.04 right away, I had change the linesand remove the " delete=False".
Also, I had to specify the complete pathname of the filter.
For simplicity reasons, i put all the files in a zip.

This simple bash filters don't work on the Gcode commands that contain [ ] expressions, e.g. the initial axis path.
For aprox 1h i just tried to create python versions. But I have no experience and am frustrated.
I will try to write a limited but better gcode interpreter in c++ and make the filters thereby.
greetings

That one work.
As you say with absolute path.

I check the changes.
The curent git doesn't have FILTER_DIRECTORY at all.

That should be incorporated I think (actualy for all filters can be same).
With my experience of EMC/Linux/C+/Python/Bash (aprox 3 weks) all changes are hard to me.

Slavko.

Hello gkubicek..

I think to be good idea to post that change to developer's list. As today git restore again kill that function...

... and to change to use filter_directory can be good too. Absolute path in menu realy looks bad.

Slavko.

Hi!
I will probablly post something on the dev-board after the weekend.

The last couple of days I was working on a much better filtering, before and after my normal workinghours.

I now have a c++ class, that reads gcode files, and gives the user access to the individual words.
Words are pairs of {G, 01} or {X,15}, or {' ', ";comment"} or {' ','" "} for some spacing
Also, the current and the previous positions are accessible, currently after each line of gcode.
So based on this words, in the main program i have a general 2-d rotation matrix with a shift.
I also have it working that X [ ] expressions are rotated and scaled and so on.

You would access this filter program then by making a scripts like
--shiftleftby-2.sh--
#!/bin/bash
# unity rotation matrix, just movement
gcodetransform 1 0 0 1 -2 0 $1

in a second stage, i think about doing a qt tool, using the same core code to set the rotation/scaling/movment parameters interactively. with calculated knowledge of the bounding box and lengths.

With Arcs, its a general problem.
If you scale an arc only in x, its not a circle arc anymore, and one would need split it into sections. Im not keen on doing that, and will just return an error message.
I know that there was a mail on the dev list about this arc splitting problem, but its a different context.

I expect is was removed from the dev-trunk, as there are no usefull filterings yet, e.g. my shell scripts did not work on the preloaded-axis-gcode.
If I can give a good filtering application, I think the usefullness will be obvious to anyone.

Initially, I tried to make this filtering code in python, to skip compilation steps and stuff, but i work much more efficient in c++.

But I still need a little bit more time..

There is now a partially working implementation for filtering.
You can create bash strips where you call this application with the correct options
--xflip.sh--
#!/bin/bash
/somewhere/grecode xflip $1
----

THERE ARE STILL MANY THINGS THAT HARDLY WORK
it should compile just by "make", no autoconf or configure necessary.

The files in this post are outdated.
I rewrote grecode, and it is hosted here:
code.google.com/p/grecode/