Re: [Sailcut-devel] Sailcut and dinghy sails

[Robert L. <rob...@sa...>]

Paul,
With the cross cut code, all the panels are square to the leech. If you change 
the width of the first panel then it will intersect the foot at a different 
place.

With the twist foot code the lower panel is running from luff to leech such 
that it is full foot length panel. the upper seam is not necessarily square 
to the leech depending on cloth width.
The next panel with the narrow width will also run from luff to leech but 
again not necessarily square to the leech simply because its width is limited 
to the cloth width. Try changing the cloth width to see if the upper seam 
become square to the leech like the higher panels.
Toward the end of the layout module there is a test to ensure that the panel 
fit within the cloth width and it adjusts the position of the leech end of 
the seam if the width of the developed panel exceeds the cloth width.

Regards/ Amitiés
Robert LAINE
http://www.sailcut.com/ free sail design software 
---- 

On Monday 06 September 2010 21:07:19 Paul Thomas wrote:
>
> Hi Robert,
>
> Thank you for that advice. I've now got the code working so that it
> generates my new seam. The only problem is that for the two bottom panels
> it aligns the cloth with this seam instead of at 90 degrees to the leech
> and I can't see why. Thinking that it may be something to do with the twist
> foot processing I re-implemented my code based on the cross cut method but
> it still aligns the cloth along my new seam :( How does the code know how
> to align the cloth?