forked from 1b-agent/opencadstudio-upstream
PanosandClaude Opus 5
8e09bd8463
A drawing saved by a commercial CAD application (tests/fixtures/plot,
provided by Panos: one 10 m line, three layouts) corrects several
assumptions of the previous commit:
- rotation is relative to the medium's own orientation: an unchanged sheet
keeps the driver's exact medium (its PDF driver lists landscape media of
its own, written with rotation 0; a system printer's portrait A3 plotted
landscape carries 90); only a newly picked sheet is written as the
catalogue's portrait medium
- the stored scale factor (DXF 147) is the ratio × 25.4 on millimetre page
setups and the plain ratio on inch ones; the "use standard scale" bit
stays clear for standard and custom scales and is set for fit-to-paper;
a standard code is kept across a paper-unit conversion ("1:1" on an
inch page setup over a millimetre paper space is 1 in = 25.4 units)
- layout plots take the same scale path as every other area, so a foreign
layout's paper-space unit survives
- "plot with plot styles" / "display plot styles" round-trip as the
dialog's checkboxes, independent of a style table being named
- layout limits place the sheet at minus its displayed margins, the way the
source application does (the printable corner is the paper-space origin);
the margin ↔ rotation mapping shared by the printable-area guide now
turns the medium's top margin into the layout's left one at 90°
The fixture round-trips through the dialog with every stored field
unchanged; picking a new sheet on it writes the canonical form.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
30 lines
2.0 KiB
Markdown
30 lines
2.0 KiB
Markdown
Page-setup fixtures saved by a commercial CAD application (2016 release, DXF
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AC1027 and the matching DWG). Provided by Panos for the plotting parity track;
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the drawing holds one 10 m line (`$INSUNITS` = 6, metres) and three paper
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layouts, each with a viewport of that line and its dimension:
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| Layout | Device | Media (`4`) | `44`×`45` | `73` | `72` | `142`/`143` | `147` | `75` |
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|---|---|---|---|---|---|---|---|---|
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| `A4 1-100` | `DWG To PDF.pc3` | `ISO_A4_(297.00_x_210.00_MM)` | 297 × 210 | 0 | mm | 1 / 1 | 25.4 | 16 |
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| `A3 - plotter` | system printer `HPB602DE (HP OfficeJet Pro 7740 series)` | `A3` | 297.01 × 419.99 | 1 | mm | 1 / 1 | 25.4 | 16 |
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| `ARCH D - PLOTTER` | the application's second PDF plotter configuration (`… PDF (High Quality Print).pc3`) | `ARCH_D_(36.00_x_24.00_Inches)` | 914.4 × 609.6 | 0 | in | 1 / 25.4 | 0.03937 | 16 |
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What the file establishes (see `src/app/update/file.rs`, `plot_settings_from_dialog`):
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- A landscape sheet is written either as the driver's own landscape medium
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with rotation 0 (the PDF driver lists both orientations) or as a portrait
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medium with rotation 90 (system printers) — rotation is relative to the
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medium's orientation, and the medium's exact driver dimensions are kept.
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- Margins (`40`–`43`, mm) belong to the medium's own edges: the PDF driver's
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A4 has 5.79375 left/right and 17.79375 bottom/top. Layout limits (`10`/`20`)
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put the sheet at minus the *displayed* margins: at rotation 90 the medium's
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top margin (20.02) becomes the layout's left one, its left margin (5.00) the
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layout's bottom one.
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- Plot flags `70` = 672 on every layout: draw viewports first, print
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lineweights, plot with plot styles — the "use standard scale" bit stays clear
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even with a standard code in `75`; the model tab (fit to paper) sets it.
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- `147` is `142/143` × 25.4 on millimetre page setups and `142/143` itself on
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inch ones.
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- An inch page setup over a millimetre paper space stores "1:1" as
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`1 in = 25.4 units` (`75` = 16 kept).
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