What is 'Shape Healing'?

It is a set of tools to repair 'broken' 3D models that have gaps, self-intersections, or other topological errors often found in imported files.

Open Cascade Technology

Open Cascade Technology | Find AI List

Overview

Open Cascade Technology (OCCT) is an industrial-grade C++ software development kit designed for the creation of 3D Computer-Aided Design (CAD), Manufacturing (CAM), and Engineering (CAE) applications. As of 2026, it remains the most robust open-source alternative to proprietary kernels like Parasolid or ACIS. Its architecture is built around a powerful Boundary Representation (B-Rep) modeling kernel that enables precise geometry definition, Boolean operations, and shape healing. The 2026 market position of Open Cascade has pivoted towards 'Hybrid Modeling,' integrating traditional B-Rep with neural mesh processing to support AI-driven generative design workflows. OCCT provides comprehensive modules for data exchange (STEP, IGES), visualization (OpenGL and Ray-tracing), and mesh management. The platform is managed by Open Cascade SAS (a Capgemini company), ensuring enterprise-grade stability and a continuous release cycle that addresses modern GPU acceleration (Vulkan/DirectX 12) and cloud-based 3D visualization requirements. Its modular nature allows developers to strip down the kernel for lightweight web-based viewers or scale up for high-performance physics simulations, making it the foundational infrastructure for billions of dollars in industrial software assets.

Common tasks

Boundary Representation (B-Rep) Modeling Geometric Shape Healing STEP/IGES Data Interoperability 3D Mesh Generation

FAQ

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Is Open Cascade really free for commercial products?

Yes, it is licensed under LGPL 2.1, meaning you can link it to your commercial application without making your own source code open-source.

Does it support 2D drafting?

While primarily a 3D kernel, it includes modules for 2D geometry and projection of 3D shapes onto 2D planes.

Can I use it with Python?

Yes, the 'pythonocc' project provides comprehensive wrappers for using Open Cascade within Python environments.

How does it compare to Parasolid?

Parasolid is proprietary and more performant for massive assemblies, but Open Cascade is the leading open-source alternative with comparable geometric features.

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