AJ Isaacs b55aa7ab42 fix: correct GPU overlap detection coordinate system mismatch ...

The GPU pair evaluator reported false-positive overlaps for all
candidates because the bitmap coordinate system didn't account for
Part.CreateAtOrigin's Location offset. When rotation produced negative
coordinates, CreateAtOrigin sets Location = -bbox.Location (non-zero),
but the offset formula assumed Location was always (0,0).

Two fixes:
- Rasterize bitmaps from Part.CreateAtOrigin directly (new FromPart
  method) instead of separately rotating polygons and computing bbox,
  eliminating any Polygon.Rotate vs Program.Rotate mismatch
- Correct offset formula to include the Location shift:
  (Part2Offset - partB.Location) instead of raw Part2Offset

Also optimized post-kernel bounding computation: pre-compute vertices
once per rotation group and process results with Parallel.For, matching
the CPU evaluator's concurrency.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-03-10 07:00:21 -04:00

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