cadmpeg-codec-nx

cadmpeg-codec-nx opens .prt files stored as SPLMSSTR containers and loads their model data into CadIr. It extracts embedded Parasolid streams and reads analytic geometry, spline geometry, trimmed curves, and connected topology.

Install

cargo add cadmpeg-codec-nx cadmpeg-ir

Use

use cadmpeg_codec_nx::NxCodec;
use cadmpeg_ir::{Codec, DecodeOptions};
use std::fs::File;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let mut input = File::open("part.prt")?;
    let result = NxCodec.decode(&mut input, &DecodeOptions::default())?;

    println!(
        "{} bodies, {} surfaces",
        result.ir.model.bodies.len(),
        result.ir.model.surfaces.len()
    );
    Ok(())
}

NxCodec::inspect lists named streams and classifies embedded model data without decoding geometry.

Coverage

The decoder handles points, common analytic surfaces and curves, B-splines, selected trimmed curves, and topology where record references resolve.

Some files still lack enough decoded tombstone data to choose the active face set. Tessellation, design history, assembly placement, appearances, and native writing are not implemented. See format support for the detailed matrix.

Documentation

• API documentation
• Format support
• Format notes
• Clean-room and legal policy
• Repository

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