Gets the column of the matrix
Source
Vector4 getColumn(int column) {
Vector4 r = new Vector4.zero();
final rStorage = r._v4storage;
int entry = column * 4;
rStorage[3] = _m4storage[entry + 3];
rStorage[2] = _m4storage[entry + 2];
rStorage[1] = _m4storage[entry + 1];
rStorage[0] = _m4storage[entry + 0];
return r;
}