C++ Examples
Two native engines through a plain C ABI. You give part + sheet polygons; you get back, per
part, move by (tx, ty), rotate by an angle, and which sheet. Angle is degrees for
nfp_nest, radians for np_nest; sheet_id == -1 means the part didn't fit.
Each example below is a self-contained project — download it, run run.bat (Windows) or
run.command (macOS); the first build compiles the OpenNest engines from source.
| # | Example |
|---|---|
| 01 | Collision — Nest parts (one with a hole) into a sheet (with a hole) with the physics (collision) engine |
| 02 | NFP + GA — Nest parts into a sheet with the NFP + genetic-algorithm engine (handles concave parts + holes) |
| 03 | Live animation (NFP) — Run the NFP engine on a background thread and poll the evolving best layout (progress, fitness, live poses) |
| 04 | Clearance offset — Grow every part and shrink the sheet by a clearance with nfp_offset_polygon, then nest the offset geometry |
| 05 | Attributes — Carry a point (a part's centroid) and read it at the placed pose: attributes move with the part |
| 06 | Pack (array) — Lay parts out in a deterministic grid: a fixed number of columns per row (no nesting) |
| 07 | Pack (distance) — Lay parts out in a grid, wrapping to a new row once a row reaches a maximum width |
| 08 | Text (font) — Render a label to single-stroke engraving polylines using the bundled OpenNest VDA font |