Geometry, nesting and import code now call PortableMath instead of
System.Math for Sin, Cos, Tan, Atan, Atan2, Asin and Acos (Core, Engine,
IO, Data; 269 calls in 64 files). A test fails if those projects call the
runtime's trig again.
With the runtime's trig, Windows and Linux disagreed in the last bit at
non-quarter angles and the same job could nest differently: the
learned-angle nests (a cross fixture) placed 23 parts in Strip on Windows
and 28 on Linux. Now every Engine.Tests pin gives the same layout on both
(3600 passing on Linux and on DesktopPC), Linux layouts are unchanged, and
the learned-angle rows are re-pinned to the shared layouts, which pass the
overlap and work-area checks, and run on every platform again.
Fixes Project Memory 518f3b58.
EllipseConverter, SplineConverter and GeometrySimplifier each carried an
identical private SumSignedAngles. Move the unchanged body to
ArcFit.SumSignedAngles and call it from all three, keeping the ordered
accumulation, strict half-turn comparisons and empty/single-point result.
ArcFitTests compares the shared method bit-for-bit with a separate
test-local accumulator across half turns, the atan2 seam, multiple
turns, translated centres and NaN inputs, and checks that inputs are not
mutated. The converter winding characterization from 8664656 still
passes unchanged.
GeometrySimplifier/ArcFit now fit arcs that pass exactly through run
endpoints while balancing tangency error between trusted and estimated
directions, fixing arcs that previously bulged or broke tangent
continuity at fillet/compound-curve junctions.
GravographIS post processor gains per-layer (engrave/cut) tool passes
via a new GravographISPostConfig, so ENGRAVE/ETCH-tagged geometry runs
as a separate scribe pass with its own feed/depth and an operator
pause before the cut pass (spring-floated spindle needs a tool swap).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add ArcFit.FitWithDualTangent to constrain replacement arcs to match
tangent directions at both endpoints, preventing kinks without
introducing gaps. Add DXF year selection to CAD converter export.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Move identical FitWithStartTangent and MaxRadialDeviation methods
to a shared ArcFit class, eliminating 40-line duplicate.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
aj
