Lift the MText parser + renderer into a reusable `layout_mtext` helper in
`text_support` and re-point the remaining text-bearing entities at it, so
every inline format code (`\f`, `\C`/`\c`, `\H`, `\W`, `\Q`, `\T`, `\A`,
`\p…`, decorations, stacked fractions, paragraph indents, tab stops, …)
reaches the stroke output uniformly.
Per-entity changes:
- TABLE cell ([entities/table.rs]) — anchor + alignment math now feeds
`layout_mtext`; `\C7;Red`-style codes no longer render as literal
glyph noise.
- MLEADER MText content (both entity path in [entities/multileader.rs]
and the LOD-aware path in [scene/tessellate.rs]) — drops the
`strip_mtext_codes` + per-line `tessellate_text_ex` chain; the LOD 0
baseline / LOD 1 greek rect / LOD 2 stroke ladder and the text-frame /
bg-fill rectangle now read line widths from the layout.
- ATTRIB / ATTDEF — when `mtext_flag` is MultiLine / ConstantMultiLine
the value goes through the MText pipeline (SingleLine stays on the
Text-style anchor maths because the DXF spec disallows codes there).
- DIMENSION text_override — `dimension_text_entity` emits a synthetic
MText (instead of Text) whenever the value contains MText escapes;
the LOD ladder via `tessellate_entity_dim_text` handles both kinds.
Infrastructure:
- `MTextVAnchor` gains `MiddleOfTopLine`, `MiddleOfBottomLine`,
`BottomOfTopLine` so MLEADER's 9 attachment variants all map cleanly.
- `MTextLayout` returns `line_widths` / `line_height` / `v_offset` so
callers that draw chrome (frames, fills, baselines, greek rects)
share the same numbers as the rendered strokes.
- `mtext_line_count` re-routed through the new parser so LOD row counts
and rendered row counts can never disagree.
- Legacy helpers (`strip_mtext_codes`, `split_mtext_lines`,
`measure_mtext_chars`, `word_wrap`, `cxf::measure_text`, the
`v_offset_for_attachment` MLEADER offset table, `MTextLine::plain_text`)
deleted — all callers migrated.
Audit (TEXT_FORMAT_CODE_INTEGRATION.md) removed; its plan is implemented
here.
Co-Authored-By: Claude Opus 4.7 <[email protected]>
- MultiLeader: stop double-scaling when ctx.text_height (WCS-baked) is set;
use it as-is and only multiply by scale_factor + anno on the fallback path.
ctx.text_width gets the same treatment.
- Text / Attribute: width_factor and oblique_angle are entity-authoritative.
The previous entity*style multiplication / addition mis-rendered any text
whose TXSTYLE had a non-default width_factor or oblique_angle (RR 0.6,
STYLE2 15°, Romans/ARIEL/A32 0.65-0.8 in the sample file).
- MText: honour TXSTYLE is_backward (negative width_factor mirror) and
is_upside_down (180° rotation). measure_mtext_chars uses positive
magnitude so anchor math stays correct under backward text.
- Tolerance: use tol.dimension_gap when set instead of the hard-coded
0.35 * height heuristic.
- Table: cell text height / font / alignment resolve through
CellContent -> CellStyle -> TableStyle.{title|header|data}_row_style
-> compiled-in defaults. Row classification respects the suppressed
flags. Cell + content rotation applied.
Co-Authored-By: Claude Opus 4.7 <[email protected]>
PolyfaceMesh and PolygonMesh were wireframe-only. They now render with
the same flat-color solid fill as Face3D entities.
- Add fill_tris: Vec<[f32;3]> to TruckEntity and WireModel
- PolyfaceMesh: fan-triangulate each face into fill_tris
- PolygonMesh: triangulate each grid quad into fill_tris
- tessellate.rs Lines branch: apply world_offset to fill_tris
- Face3DGpu::from_wires: collect fill_tris from all wires in addition
to Face3D key_vertices quads
- upload_face3d: pass all_wires so fill_tris are batched into one draw call
- Grip points in paper space now use the 2-D linear to_px transform
(tx/ty/ortho_size) instead of the 3-D view_proj matrix, matching the
coordinate system used by PaperCanvas
- world_offset is no longer subtracted from paper-space entity grip
positions — paper-space coordinates are already unoffset (same rule
as wire tessellation in wires_for_block)
- MTEXT v_offset corrected for all attachment points: CXF glyphs sit
on the baseline and extend upward, so Top attachment needs v_offset=-h,
Bottom needs (n_lines-1)*line_h, Middle is the midpoint of the two
Co-Authored-By: Claude Sonnet 4.6 <[email protected]>
Line spacing: DXF code 44 (line_spacing_factor) is a multiplier on
AutoCAD's default baseline-to-baseline distance of 5/3 × text_height.
The renderer was using factor × 1.0 instead of factor × 1.667, making
all MTEXT appear cramped.
Blank paragraphs: split_mtext_lines was filtering out empty strings, so
\\P\\P (double paragraph break used to separate sections) was silently
collapsed. Empty lines in the middle of the block are now preserved;
only leading/trailing blank lines are stripped.
Co-Authored-By: Claude Sonnet 4.6 <[email protected]>
- fix: polyline arc center sign was inverted (- → +) causing arcs to render on the
wrong side in LwPolyline and Polyline2D
- fix: store glyph strokes in local space with f64 origin so world_offset subtraction
uses f64 precision; prevents blocky text at large UTM coordinates
- fix: Face3D fill darkened to 45% so edge wires are visually distinct from fill
- fix: wire batch vertex buffer chunked to 256 MB GPU limit (was panic on large files)
- fix: gpu_face3d_edges changed from Option<WireGpu> to Vec<WireGpu> to support chunks
Co-Authored-By: Claude Sonnet 4.6 <[email protected]>
Text/MText values now correctly handle DXF special-character sequences:
- %%d → °, %%p → ±, %%c → ⌀, %%nnn → Unicode scalar (resolved in tessellation)
- %%u / %%o toggle underline and overline strokes for TEXT entities
MText decoration codes (\L/\l, \O/\o, \K/\k) were previously consumed
as argument-bearing codes, silently eating the decorated text. Fixed
strip_mtext_codes to keep them as zero-width markers; tessellate_text_ex
now emits actual line strokes (underline, overline, strikethrough).
measure_mtext_chars and word_wrap skip markers so line widths are correct.
Co-Authored-By: Claude Sonnet 4.6 <[email protected]>
