* Bound block expansion in drawing and extents (fixes#255)
MAX_BLOCK_DEPTH bounds only the depth of nested block references, so a
small DXF with a self-referencing block, blocks that each insert the next
several times, or one large MINSERT expanded to billions of copies and
hung the app (drawing, PNG/SVG/PDF export, extents, saving).
- render: a per-display-list budget (MAX_BLOCK_EXPANSION, 2 million
block copies and entities drawn inside blocks); past it the remaining
block contents are not drawn.
- doc: entity_bounds computes each block's content bounds once per call
and reuses them for every further reference.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* Move Builder::expand below the drawing primitives
Pure code motion so this branch merges cleanly with fix/272-aci7-only-flips
(#272), which changes the Builder::polyline signature next to it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Valentin KleinandClaude Opus 5.5
575e690cc5