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Re: gEDA-user: PCB format wishlist



On 09/06/2010 04:32 PM, DJ Delorie wrote:
Or, could we base everything off of lines, attach a 'curvature'
property to create arcs, and build polygons from that.
Arcs can be simulated with many short lines, so the only primitive we
need are lines.  Of course, if "line" is a two-point polygon, then the
only primitive we need is polygons.
I don't really like the idea of 'simulating' arcs - it uses a *lot* of information to approximate what you are trying to do. My preference would be to keep an arc as a primitive type.
A point is just a line that starts and ends at the same coordinates.
Not really - a line that starts and ends at the same coordinate looks like a point, but it isn't. That presently causes us problems with square pads. I think I remember some issues with approximations of a point using traces, too?


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