We use the segments extensions (dxTarget & dyTarget) to enlarge if
needed the segments. This new implementation is completely at
Anabatic level and should not be seen (i.e. managed) at Katana level.
* Change: In AutoHorizontal & AutoVertical, change the semantic of
getSourceU() and getTargetU(). formerly they where the end
position of the segment (with extension included), now they
gives the position of the anchor contacts, that is the axis
of the perpandiculars.
* New: AutoSegment::getLength() is still a proxy toward the
Segment::getLength() which returns the length of segment with
dxSource & dxTarget. We introduce a getAnchoredlength()
which returns the length between the centers of the S/T
anchors. That is axis to axis.
This is this length which is now used througout Anabatic.
* New: In AutoSegment::_extentionCaps, add a fourth item to hold
the segment minimal length (to respect minimal area given
the wire width).
* New: In AutoSegment::getExtensionCap(), if the segment has
a non-zero S/T extension, returns it instead of the S/T
contact extension *if it is greated*. The check of the
extension can be disabled by the Flag::NoSegExt flag.
* Change: In AutoSegment::isMiddleStack(), security check on
the presence of source and targets. More accurate detection
of perpandicular in "same layer" with a non-zero length,
So the area is OK, even with a short segment.
* New: AutoSegment::expandToMinLength(), check if a segment is
under the minimal length and expand it if need be by playing
with the dxTarget & dxSource. Tag minimal segments with the
AutoSegment::SegAtMinArea flag. Also try to keep the segment
*inside* it's former (supposedly wider) interval.
* New: AutoSegment::unexpandToMinLength(), to be called on a
formerly minimal sized segment which as grown up. Reset
it's S/T extensions to zero and unset the flag SegAtMinArea.
* Change: In AutoHorizontal::updateOrient(), when the extension
are non-zero, also swap them if needed, to keep the exact
footprint of the segment.
* New: In AutoSegment::revalidate(), check that the segment
respect the minimal length (area), and expand it if needed.
Conversely, if the segment has grown up from a minimal
length state, reset it's extensions to zero.
* Change: In Anabatic::Session::revalidate(), invalidateds
segments are now sorted in such a way that the "middle stack"
ones are revalidateds last. Not recall 100% why...
* New: In Katana::TrackCost, add a computation of the free interval
length we are into (if any). Not used yet, keep it for future
use.
* Change: In KatanaEngine::finalizeLayout(), remove the call to
segments minimum area protection. It is now obsoleted by the
new implementation in Anabatic.
* Change: In Track::check(), call the minimum size/area checker
Track::checkMinArea().
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