cadmpeg-step

cadmpeg-step writes CadIr documents as ISO 10303-21 STEP AP214 files. Use it when you want to export a model without calling the cadmpeg CLI.

Install

cargo add cadmpeg-step cadmpeg-ir

Use

use cadmpeg_ir::units::Units;
use cadmpeg_ir::CadIr;
use cadmpeg_step::{write_step, StepWriteOptions};

let ir = CadIr::empty(Units::default());
let mut output = Vec::new();
let report = write_step(&ir, &mut output, &StepWriteOptions::default())?;

assert_eq!(report.error_count(), 0);
assert!(output.starts_with(b"ISO-10303-21;"));

# Ok::<(), cadmpeg_step::StepError>(())

Coverage

The writer handles solids, shells, faces, loops, edges, vertices, common analytic geometry, and B-spline curves and surfaces. It also writes the product and unit records expected by STEP readers.

The writer does not map every CadIr field to STEP AP214. StepReport lists entities it skipped or reduced so callers can decide whether to keep the file.

Documentation

• API documentation
• Format support
• Architecture and crate map
• Clean-room and legal policy
• Repository

Requires Rust 1.88 or later. Licensed under Apache-2.0.