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Valentin KleinandClaude Opus 5.5
937dca6590
acadrust's DXF writer leaves ANGBASE, ANGDIR, FILLETRAD, CHAMFERA/B, ELEVATION and THICKNESS out of the HEADER although its DWG reader fills them in; the DWG bridge now adds them to the DXF it hands our reader. SNAPBASE/SNAPANG are written to and read from the *ACTIVE VPORT record (groups 13/23 and 50), where R13+ files keep them. Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
63 lines
2.2 KiB
Rust
63 lines
2.2 KiB
Rust
//! Unit, angle and drafting settings in the drawing header survive saving as DXF or DWG and
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//! reopening. The DWG bridge converts with acadrust, whose DXF writer leaves some header
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//! variables out; the snap grid's origin and rotation live in the `*ACTIVE` VPORT record.
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#![cfg(not(target_arch = "wasm32"))]
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use cadcraft_doc::{Drawing, HVal};
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use cadcraft_geom::Vec3;
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fn drawing() -> Drawing {
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let mut d = Drawing::new_metric();
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let h = &mut d.header;
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h.set_i64("AUNITS", 3);
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h.set_i64("AUPREC", 5);
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h.set_i64("LUNITS", 4);
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h.set_i64("LUPREC", 6);
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h.set_f64("ANGBASE", 0.5);
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h.set_i64("ANGDIR", 1);
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h.set_i64("INSUNITS", 6);
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h.set_i64("MEASUREMENT", 0);
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h.set_f64("LTSCALE", 2.5);
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h.set_f64("DIMSCALE", 4.0);
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h.set_i64("PDMODE", 34);
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h.set_f64("PDSIZE", 1.5);
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h.set_f64("FILLETRAD", 2.0);
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h.set_f64("CHAMFERA", 1.25);
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h.set_f64("CHAMFERB", 0.75);
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h.set_f64("ELEVATION", 3.0);
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h.set_f64("THICKNESS", 0.25);
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h.set("SNAPBASE", HVal::Point(Vec3::new(3.0, 4.0, 0.0)));
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h.set_f64("SNAPANG", 30.0);
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d
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}
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fn check(name: &str, r: &Drawing) {
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let d = drawing();
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let ints = ["AUNITS", "AUPREC", "LUNITS", "LUPREC", "ANGDIR", "INSUNITS", "MEASUREMENT", "PDMODE"];
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for v in ints {
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assert_eq!(r.header.i64(v, -99), d.header.i64(v, -99), "{name}: ${v}");
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}
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let reals = ["ANGBASE", "LTSCALE", "DIMSCALE", "PDSIZE", "FILLETRAD", "CHAMFERA", "CHAMFERB", "ELEVATION", "THICKNESS", "SNAPANG"];
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for v in reals {
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let (got, want) = (r.header.f64(v, -99.0), d.header.f64(v, -99.0));
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assert!((got - want).abs() < 1e-9, "{name}: ${v} read back as {got}, not {want}");
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}
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let base = r.header.point("SNAPBASE").unwrap_or(Vec3::new(-99.0, -99.0, 0.0));
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assert!((base.x - 3.0).abs() < 1e-9 && (base.y - 4.0).abs() < 1e-9, "{name}: $SNAPBASE read back as {base:?}");
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}
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#[test]
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fn header_settings_round_trip_through_dxf() {
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let d = drawing();
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let r = cadcraft_io::read_dxf(cadcraft_io::write_dxf(&d).as_bytes()).unwrap();
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check("DXF", &r);
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}
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#[test]
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fn header_settings_round_trip_through_dwg() {
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let d = drawing();
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let dwg = cadcraft_io::write(&d, "x.dwg").unwrap();
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let r = cadcraft_io::read(&dwg, "x.dwg").unwrap();
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check("DWG", &r);
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}
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