1) For a while now we've been using a calculated seg count from a given
maxError, and a correction factor to push the radius out so that all
the error is outside the arc/circle. However, the second calculation
(which pre-dates the first) is pretty much just the inverse of the first
(and yields nothing more than maxError back). This is particularly
sub-optimal given the cost of trig functions.
2) There are a lot of old optimizations to reduce segcounts in certain
situations, someting that our error-based calculation compensates for
anyway. (Smaller radii need fewer segments to meet the maxError
condition.) But perhaps more importantly we now surface maxError in the
UI and we don't really want to call it "Max deviation except when it's
not".
3) We were also clamping the segCount twice: once in the calculation
routine and once in most of it's callers. Furthermore, the caller
clamping was inconsistent (both in being done and in the clamping
value). We now clamp only in the calculation routine.
4) There's no reason to use the correction factors in the 3Dviewer;
it's just a visualization and whether the polygonization error is
inside or outside the shape isn't really material.
5) The arc-correction-disabling stuff (used for solder mask layer) was
somewhat fragile in that it depended on the caller to turn it back on
afterwards. It's now only exposed as a RAII object which automatically
cleans up when it goes out of scope.
6) There were also bugs in a couple of the polygonization routines where
we'd accumulate round-off error in adding up the segments and end up with
an overly long last segment (which of course would voilate the error
max). This was the cause of the linked bug and also some issues with vias
that we had fudged in the past with extra clearance.
Fixes https://gitlab.com/kicad/code/kicad/issues/5567
- convert expression string tokens to single-quote-delimited
- fix bug where netclass assignments weren't getting updated after
board setup dialog
- move property manager rebuild to lazy evaluation
- improve performance with wider use of const&
- retire DRC_SELECTOR stuff
- use wxString for GUI stuff (particularly translated stuff)
- fix EqualTo() to return false instead of asserting when op types
don't match
- fix buffer overruns with fixed-size string buffers
- make expression function calls case-insensitive
- integrate expression errors into rule parser
- produce more and better error messages
- keep BOARD_ITEM ptrs const as long as possible
- fix a couple of uninitialized variables
1) Don't try and do board-edge clearance checking against a
synthetic polygon constructed because we didn't find any edges.
2) Check pads against board edge.
3) Don't report vias as "Track too close to board edge".
The board setup dialog controls DRC error visibility, so the
two dialogs shouldn't be open at the same time to prevent
data contention.
Follow-up to https://gitlab.com/kicad/code/kicad/-/issues/4023
Jeff Young
Tomasz Wlostowski
Seth Hillbrand
Jon Evans
jean-pierre charras
Ian McInerney