At 08:51 AM 9/27/2005, Leo Potjewijd wrote:
At 19-9-2005 14:31, Leo Potjewijd wrote:
On the PCB (P99SE) all my arcs look great, even on the print preview.
But in the Gerber files some, not all, are wrong: the start and end in the right places, but go the wrong way around. So a 90 degree turn ends up as a 270 degree turn with another center and shorts stuff......

And I am pleased to tell you all what the cause of this was. (drum roll, please ;)

In the 'Advanced' tab of the Gerber Setup screen (right-click on gerber outputs in CAM Manager) is a radio button 'Plotter Type'. As soon as this is set to 'Sorted (vector)' the trouble starts: random inversions of arcs and even deformation of texts.....

I want to congratulate and thank Mr. Potjewijd for finding this; the arc problem was a known bug, and, to my knowledge, the cause had not yet previously been identified.

It is quite likely that those who wrote the arc code and those who tested the software never tested it fully in the "Sorted" context.... which option is about equivalent to providing one for "Rapidograph pens." Except more likely to suck in a user who thinks that sorted and orderly must be better than scattered and disorderly....





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