mrdoob/three.js — pull request #2223 by Dahie (2012-07-21 19:49:34+00:00)
Title: Improves/extends whitespace parsing in OBJLoader

I had the issue that some of my OBJ-files weren't loaded by the OBJLoader provided in the examples. Parsing the file crashed with this exception:

```
Uncaught TypeError: Cannot read property 'x' of undefined Three.js:13
THREE.Vector3.addSelf (Three.js:13)
THREE.Geometry.computeCentroids (Three.js:91)
THREE.OBJLoader.parse (OBJLoader.js:295)
xhr.onreadystatechange (OBJLoader.js:21)
```

I traced the error to the OBJLoader and my OBJ files. The obj files were exported by 3ds Max Wavefront OBJ Exporter and slightly differ in format:

Where the loader expected:
```
v 0.4500 1.5256 0.6595
```
they were:
```
v 0.4500 1.5256 0.6595
```
Note the extra space. This threw off the regular expressions, the vertices weren't parsed and the computeCentroid failed. This commit changes the regular impression to accomodate this variance.