Box2D-Lite Walkthrough in Javascript: Introduction

All my Box2D-Lite posts have been transferred to my new blog site:

• Introduction

• Different Spaces and Drawing Boxes

• Unconstrained Dynamics

• Collision Detection

• Generating Contact Points

• Introduction to Constrained Dynamics

• Contact Constraint

• Revolute Joint

• Friction

• Solving Constraints

• Softening Constraints

• Warm Starting

Useful References

Github containing the Box2D-Lite code as well as documentation giving lots of clues as to its workings.

https://github.com/erincatto/box2d-lite

There is a detailed paper by Erin Catto covering the theory behind constraints as well as sequential impulse.

https://box2d.org/files/ErinCatto_IterativeDynamics_GDC2005.pdf

Another presentation on constraints by Erin Catto, GDC2009 (has slides on the Distance constraint and motors, which are not implemented in Box2d-Lite)

https://box2d.org/files/ErinCatto_ModelingAndSolvingConstraints_GDC2009.pdf

Video of presentation by Erin Catto at GDC 2013

https://www.youtube.com/watch?v=Z35lk5-zFYY

And this site has the recording of the same presentation as well as the the presentation slides in PDF

https://archive.org/details/GDC2013Catto

Here is the deck to the presentation on soft constraints by Erin Catto

https://box2d.org/files/ErinCatto_SoftConstraints_GDC2011.pdf

A deck of a presentation by Erin Catto given at the GDC2014

https://box2d.org/files/ErinCatto_UnderstandingConstraints_GDC2014.pdf