A rust crate for reading STP/STEP CAD files.

STEP (Stadndard for Exchange of Product model) is a standard for describing product data and is formally defined in ISO-10303.

Design

Schema files are written in EXPRESS language. We write an EXPRESS parser to read a schema defination, then generate a Rust code file which contains data type definations, trait impls and a reader to read stp files.

Run example: cargo run --features=gencode --bin gencode schemas/example.exp examples/family/reader.rs cargo run --example family

Generate reader code: cargo run --release --features=gencode --bin gencode schemas/AP214E3_2010.exp parts/src/ap214.rs Ap214 cargo run --release --features=gencode --bin gencode schemas/AP203E2_November_2008.exp parts/src/ap203.rs Ap203 cargo build --workspace

Generate dot graph: cargo run --release --features=gengraph --bin gengraph schemas/AP214E3_2010.exp graphs/ap214.dot cargo run --release --features=gengraph --bin gengraph schemas/AP214E3_2010.exp graphs/curve.dot Curve

STEP related resources: - CAx Interoperability Forum - STEP Tools - ISO 10303-21