CAD/CAM kernel architect based in Japan, building safe, high-performance modeling platforms in Rust.

I'm currently developing a professional-grade CAD kernel and CAD/CAM platform, with a strong emphasis on:

• 🛡️ Safety-first architecture: APIs are semantically correct, with explicit mutability and private field access.
• ⚡ High-performance modeling: Supporting high-degree NURBS, G² continuity, and robust geometric operations.
• 🦀 Rust-powered development: Leveraging Rust’s type system and ownership model for precision and reliability.
• 🧪 Geometry test scaffolding: Designing extensible test skeletons for intersection and constraint logic across primitives.

This project aims to deliver a scalable, standards-compliant foundation for next-generation CAD/CAM applications.

Currently designing test scaffolding for:

• 🔹 Intersection logic: Line–Line, Ray–Circle, NURBS–NURBS, with edge cases and tolerance handling.
• 🔹 Constraint systems: Parametric constraints, geometric dependencies, and solver-ready structuring.
• 🔹 Extensibility: Modular test definitions per primitive, with future support for 3D and hybrid constraints.

These tests ensure robustness, safety, and future-proofing for advanced modeling operations.

• Refactor geometry primitives to enforce API safety and semantic correctness
• Implement constraint system scaffolding for parametric modeling
• Expand intersection logic to support NURBS and hybrid primitives
• Modularize 2D/3D geometry separation for future extensibility
• Integrate undo/redo architecture with traceable state transitions

• #5 — Structural Design of Primitive Geometry
• #12 — Definition of the Edge Structure and Retention of Connectivity Information
• #19 — Design of Sketch Features and Constraint System
• #26 — Modeling History and Operation Logging
• #33 — Introduction of Geometric Intersections and Boolean Operations