https://github.com/jeffvella/UnityNativeCollision

SAT Collision in C# for Unity3D Burst Compiler
https://github.com/jeffvella/UnityNativeCollision

Last synced: 4 months ago
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SAT Collision in C# for Unity3D Burst Compiler

• Host: GitHub
• URL: https://github.com/jeffvella/UnityNativeCollision
• Owner: jeffvella
• License: mit
• Created: 2019-02-20T14:26:09.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2019-05-01T13:11:20.000Z (about 5 years ago)
• Last Synced: 2024-01-14T18:55:20.582Z (5 months ago)
• Language: C#
• Size: 342 KB
• Stars: 246
• Watchers: 24
• Forks: 40
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

Lists

• awesome-unity3d - UnityNativeCollision - SAT Collision in C# for Unity3D Burst Compiler (Open Source Repositories / Physic)
• awesome - jeffvella/UnityNativeCollision - SAT Collision in C# for Unity3D Burst Compiler (C\#)
• awesome - jeffvella/UnityNativeCollision - SAT Collision in C# for Unity3D Burst Compiler (C\#)

README

        
# UnityNativeCollision #

This project is an experimental C# implementation of polyhedron SAT collision and intersection for the Unity game engine. It's specifically designed to be compatible with Unity's Burst Compiler for performance. 

##### Acknowledgments:

The math is ported to C# from the C++ BounceLite project by Irlan Robson (zLib License) and adapted for Unity's new Math library and Burst Compiler requirments: https://github.com/irlanrobson/bounce_lite 

The SAT implementation is originally based on the 2013 GDC presentation by Dirk Gregorius and his forum posts about Valve's Rubikon physics engine:

 * https://www.gdcvault.com/play/1017646/Physics-for-Game-Programmers-The

 * https://www.gamedev.net/forums/topic/692141-collision-detection-why-gjk/?do=findComment&comment=5356490 

 * http://www.gamedev.net/topic/667499-3d-sat-problem/ 

##### Features:

* Generation of native half-edge mesh from Unity Meshes.

* Fast convex polyhedron face/edge boolean collision detection.

* Polyhedron intersection manifold generation (via Sutherland-Hodgman clipping)

* Burst compiled jobs for single and batch collision operations.

* Experimental bounding volume hierarchy.

* NativeBuffer collection able to run off stackalloc.



Note: Project was created with Unity 2019.2, older versions may not work.

##### Performance:



##### Contact Visualization:

View a fast version of the contact for physics calcluations. This mode a processes a minimal set of geometry, just enough to move colliding objects apart. Versus the full intersection mode, which needs to clip every face for visual/mesh creation purposes.