johnmccutchan/vector_math — pull request #13 by aforsell1971 (2013-05-29 04:14:12+00:00)
Title: Added Vector4 identity constructor

I am migrating the Dart three.dart library to use vector_math. The Vector4.identity constructor would correspond to their Vector4 default constructor so that I don't have to use new Vector4(0.0, 0.0, 0.0, 1.0)