This Vector2 class is probably not the fastest around, but is very easy in use. For example for quick prototyping of games. For a high performance alternative that can do many calculations in for example a render loop, I'd like to redirect you to the awesome gl-matrix by toji.
- length()
- lerp( vec2, factor )
- dot( vec2 )
- normalize()
- cross( vec2 )
- rotate( deg )
- add( vec2|number )
- sub( vec2|number )
- mul( vec2|number )
- div( vec2|number )
- abs()
- equals( vec2 )