Fixes for double to int cast warnings. ASSIGNED - bug 1401: Use vertex arrays with OpenGL  https://tracker.physiomeproject.org/show_bug.cgi?id=1401
Fixes for double to int cast warnings.
ASSIGNED - bug 1401: Use vertex arrays with OpenGL 
https://tracker.physiomeproject.org/show_bug.cgi?id=1401

git-svn-id: 4705079bc6b8aadf675e3696f5c015a6aa4916e3@6058 3c1deb5b-d424-0410-962d-aba41a686d42

hsorby/zinc,hsorby/zinc,hsorby/zinc,hsorby/zinc,OpenCMISS/zinc,OpenCMISS/zinc,OpenCMISS/zinc,OpenCMISS/zinc