The migration in #170 collapsed every run of blank lines in the 48 files it
touched, including inside verbatim copies of upstream code (e.g.
curve_curve_p3.cpp), so they no longer diffed cleanly against upstream.
Restore exactly those 91 blank lines; nothing else changes.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
125 shims carried private copies of the same small helpers (put_vec, st,
nl_status, Rd, dump_crv, read_nurb, ...). Move the most common, byte-identical
form of each into three headers grouped by the upstream API they need, and have
those shims pull them in with `using sc::<name>;`. Shims with a different
variant keep their own copy; files touched by open PRs are left alone.
`the_context()` stays per shim (its function-local SmContext must not be shared).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FBLgPenT24P1dunqnZR1Dj
SmSurfaceCache object and simple queries, SmBezierAux2d/SmBezierPatch node data
with lazily built polar boxes, SmPatchBoundaryBoundingPlanes, SmAltSrfCache,
sm_ComputeBezierApproximation, ComputeSizeTolerances, GetCorners, BuildTreeTop,
FindUnmarkedLeafNode, GetConnectedRegion, MarkFaceContainment,
GetSurfaceContinuity, GetIsoBoundaryCurves, sm_CullArray; shim, ffi, difftest
runner and fixtures (872 cases, 709 pass bit-identical, 163 deferred).
Wired UNPORTED(surface.surface_cache_p1): SmTree::GetOwnerObject of surface
trees (Tree::set_owner_surface), sm_GetOriginalSurface; retagged the stubs that
need the cache's patch data from a bare tree to surface.surface_cache_p3 and
smsurf_GetSurfaceCache paths to surface.surface_p1 (CacheMakeOrValidate).
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V8ohWGLCzFPoZriCeSSero
jijinbei