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Re: gEDA-user: Part Rotation in XY-data



On Wed, Nov 5, 2008 at 1:16 PM, Duncan Drennan <duncan.drennan@xxxxxxxxx> wrote:
> I was thinking about something else and I would be interested to know
> what the spec suggests. The Samsung machines had an option to specify
> the orientation of your axis, so the axis orientation of the file also
> had to be communicated to the machine operator. I think the machines
> coordinates started in the bottom left (normal Cartesian, with 0,0
> closest to the operator all the way to the left).

In IPC-2581 there is a diagram that depicts a "primary side" with a reference
point. If you are looking at the "primary side" and place the reference point
in the lower left corner +y goes up and +x goes right.

(* jcl *)

-- 
http://www.luciani.org


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