forked from 1b-agent/opencadstudio-upstream
sLuCHa
1a45f6bd97
Hatched content — especially fills nested inside a block INSERT, such as a title-block logo — plotted incorrectly: missing, mis-spaced, or with phantom bars. Five related fixes make the PDF/plot output match AutoCAD. 1. Export block-internal hatch fills. The export collected only hatches owned directly by the layout block, so a hatch nested in a block INSERT was dropped and printed as bare monochrome outlines. The insert-explosion the viewport already does is extracted into a shared `exploded_insert_hatch_models()` and called from both the viewport (`synced_hatch_models`) and the export (`paper_canvas_hatches`), so a plot draws block-internal hatches identically to the screen. 2. Honour the hatch's own stored pattern-line spacing. `hatch_model_from_dxf` re-derived pattern spacing from the name-matched catalog entry x pattern_scale, ignoring the resolved line geometry the DWG stores on the hatch. When a drawing was authored against a different base spacing (imperial 0.125 vs the catalog's metric 3.175 for ANSI31), lines came out up to ~25x too coarse and a dense fill collapsed to a few stray lines. When the hatch carries its own line geometry it is now used directly (identity scale/angle); the catalog path remains the fallback. 3. Fill far-from-origin pattern hatches. `pattern_segments` clamped the ABSOLUTE scan-line index to +/-MAX_LINES_PER_FAMILY. A fine-spaced hatch far from the pattern origin has large-magnitude indices at both ends but a small span, so the clamp inverted the range and emitted nothing — silently dropping the fill. Cap the line count (span) instead of the absolute index. 4. Skip TEXTBOX boundary paths. TEXTBOX boundary paths (flag bit 3) are text bounding-boxes AutoCAD derives for island detection; they are never drawn or filled. Treating one as a fill boundary painted its rectangle solid — a phantom bar. It is now skipped when building the fill boundary. 5. Print white/ACI-7 hatch fills black on paper. Hatch fills arrive adapted to the dark screen background, so a white/ACI-7 fill would vanish white-on-white on the sheet. Mirror the wire pass: near-white/near-yellow -> black, near-cyan -> dark blue, matching AutoCAD's colour-7-on-white plotting. Wipeouts keep their paper-white mask. Adds `tests/block_hatch_export.rs` covering: block-internal hatch reaches the export set, stored-line spacing is honoured, far-from-origin fills are not dropped, and TEXTBOX paths are not filled.