Struct StepExportReport 

pub struct StepExportReport {
    pub text: String,
    pub pcurves_written: usize,
    pub pcurves_omitted: usize,
    pub surface_curves: usize,
    pub seam_curves: usize,
    pub bare_curves: usize,
    pub vertex_loops: usize,
    pub max_pcurve_deviation: f64,
    pub worst_omitted_deviation: f64,
}

The AP214 document plus what the writer measured while producing it.

The pcurve counters are the honest half of the verify-or-omit contract in step/pcurve.rs: a pcurve is written only when the emitted 2D geometry was proved to reproduce the emitted 3D curve, and every one that could not be proved is COUNTED here rather than guessed into the file. A reader reprojects an omitted pcurve exactly as it must reproject every pcurve in the files this exporter wrote before curve-on-surface geometry existed.

Fields

text: String

The Part 21 text.

pcurves_written: usize

PCURVE entities written — at most one per coedge use of a non-degenerate edge.

pcurves_omitted: usize

Coedge uses left without a pcurve because no candidate 2D geometry verified inside the export band.

surface_curves: usize

Edges written as SURFACE_CURVE (their two uses sit on two surfaces).

seam_curves: usize

Edges written as SEAM_CURVE (both uses on ONE surface — a periodic seam, the case an importer otherwise has to re-detect geometrically).

bare_curves: usize

Edges that kept a bare 3D curve for edge_geometry, because no pcurve survived (or a seam lost one of the pair it is required to carry).

vertex_loops: usize

Collapsed face boundaries written as VERTEX_LOOP — cone apexes and sphere poles, which this writer used to drop entirely.

max_pcurve_deviation: f64

Largest verified ‖S(c₂d(s)) − c₃d(s)‖ among the pcurves actually written, in model units.

worst_omitted_deviation: f64

Largest deviation among the BEST candidate for each OMITTED pcurve — how far the closest miss was, so an omission can be diagnosed as “a candidate applied and missed the band by this much” rather than only counted. Zero when nothing was omitted.

It is infinite when ANY omission had no candidate proposed at all, which then hides the finite misses behind it — the two omission classes share one counter. Splitting them is a follow-up; the max is the useful half, because it is the finite value that says whether widening the band would have helped.

Trait Implementations

impl Clone for StepExportReport

fn clone(&self) -> StepExportReport

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for StepExportReport

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for StepExportReport

fn default() -> StepExportReport

Returns the “default value” for a type.