18Feb/101
Henge3D Physics Library for XNA
There’s a new Physics engine targeting the XNA FX (hat tip to to Nick Gravelyn for the discovery):
Project Description
Henge3D is a 3D physics library written in C# for XNA. It is implemented entirely in managed code and is compatible with the XBOX 360.
Overview:
- Rigid body simulation with collision detection, response, and approximated friction.
- Supports collision skins consisting of arbitrary convex polyhedra, spheres, capsules and planes. Collision detection against triangle meshes is also supported.
- Supports a number of constraints, including body point constraints, revolute joints, universal joints, prismatic joints, etc.
- Multi-threaded collision detection and collision response.
- Ability to import collision skins from Blender and potentially other modeling programs.
- Supports ragdolls using collections of rigid bodies with constraints (see the Holodeck program for examples).
28Oct/091
Article : Verlet Integration Particles
by Gorion

This article will show you what VIP's (Verlet Integration Particles) are and how to make them. If you look it up on wikipedia you can see that the math behind the concept is quite complex. While it's not in the scope of this article to explain the math, I will give you a good website which, in my opinion, explains it really well.