Hi all! Maybe you remember my question of a few weeks ago about a more flexible way to transform the coordinates in a G-code file: http://sourceforge.net/mailarchive/forum.php?thread_name=528A6D98.7080208%40hb9etc.ch&forum_name=emc-users
My decision was then, to do most of the transforms in Python and generate the G-code as needed. I've now implemented most of that for my use case (alignment of a PCB panel based on fiducial marks) with a little Glade GUI. This works quite well, using the linuxcnc interface from Python (http://linuxcnc.org/docs/html/common/python-interface.html), it is possible to read the current position, do the calculations, generate the code, load and run it. Except for one thing: When I load the G-code file, AXIS does not display a preview of the program, neither in the code pane nor in the live plot. The file name is displayed in the window's title bar however, and running it works and correctly draws the backplot. It is easy to test this in a Python console with LinuxCNC running: $ python Python 2.6.5 (r265:79063, Sep 26 2013, 18:51:09) [GCC 4.4.3] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import linuxcnc >>> lcmd=linuxcnc.command() >>> lcmd.reset_interpreter() >>> lcmd.mode(linuxcnc.MODE_AUTO) >>> lcmd.program_open('/home/linuxcnc/linuxcnc/nc_files/simple_symbol.ngc') >>> lcmd.auto(linuxcnc.AUTO_RUN, 1) Does anyone have an idea what I could do to trigger the preview? Clicking the Reload button in AXIS does nothing (no error message, just nothing happens). Loading the same file from the AXIS menu shows the expected behaviour, code and graphic preview is generated. The preview is obviously not critical for this application, but it would help to check if the alignment is correct (or at least not completely off). Could anyone give me a hint how to solve that? Thanks! Best regards, Philipp
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