open pocket zig zag

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hi 
i  like to have a open pocket zig zag for rouphing a ege pocket from outside!
see jpg 

the blue line woudt be the wanted toolpath so the bit is acting from outside to 
inside is this posible 

the finish path is made by crc profile this works 
only the rouphing starts inside 
CAUSE there is no setting for overlap

Original issue reported on code.google.com by sammello...@gmail.com on 15 Nov 2011 at 5:25

Attachments:

• heeks_open_pocket.jpg

[GoogleCodeExporter]

I have thought about this. It is not always clear what to do. I mean; it is not 
possible to make a function to offset only some spans.
A way that could work is to define an area to cut ( the rectangle face ) and 
define an area to avoid ( all the faces above rectangle face ). Then offset 
outwards the "area to cut", then subtract from it the "area to avoid".

Original comment by danhe...@gmail.com on 15 Nov 2011 at 6:06

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[deleted comment]

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i got it almost done there is a 0.001 rectangle on the last path this has to be 
eliminated 
i will keep on tracking this 

the files for testing are includet !
Zip 

Original comment by sammello...@gmail.com on 20 Nov 2011 at 4:21

Attachments:

• heeks_issue_321_solved.jpg
• heekscad_issue_321_solved_almost.zip

[GoogleCodeExporter]

discoverd a error for tolpath  if no zig so i changed line 
352 and 357 to 
if ((zig_unidirectional) and (i == num_steps -1)) :

only do this if undirctional zig is choosed 

PLEASE keep notice 

i cant post the new area_funcs cause to 
Issue attachment storage quota exceeded

Original comment by sammello...@gmail.com on 20 Nov 2011 at 4:57