From: Peter Clifton <peter.clifton@cl...> - 2013-02-19 17:21:06
If you don't consider the silhuette polygon confidential, I could patch
up a debug snippet which will spit out the offending polygon.
(Or you could send me something in confidence privately).
FWIW, I can probably just debug what I suspect to be the root cause, and
send you updated code to test against. (Altough I'd like to check the
polygon to ensure that it isn't otherwise degenerate).
Regarding the patches attached to this bug, I'll have a review of them when I get a moment. I think I'd prefer like to push the numerical fix and the half-segment rotation as two separate changes though.. We should test both separately.
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Polygons don't sufficiently clear circular items
Status in PCB: Printed Circuit Board CAD package:
The correction factor POLY_CIRC_RADIUS_ADJ is not applied to the first
and last points in all circular sections.
The results in inadequate clearance to the right of vias & pins.
Line and arc clearances are similarly inadequate.
Attached is a simple example. To repeat:
1) Move the mark the centre of the via
2) Turn off the grid
3) Go to the polygon edge to the right of the via
4) Zoom in LOTS
5) Inspect the distance to the polygon at just above and below the "3 o'clock" position
Clearance in this example is supposed to be 0.35mm (0.25mm via radius
+ 0.1mm clearance). However 0.3494mm is observable.
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