public void Set( float[,] _Source )
{
if ( _Source == null )
return;
m[0, 0] = _Source[0, 0]; m[0, 1] = _Source[0, 1]; m[0, 2] = _Source[0, 2];
m[1, 0] = _Source[1, 0]; m[1, 1] = _Source[1, 1]; m[1, 2] = _Source[1, 2];
m[2, 0] = _Source[2, 0]; m[2, 1] = _Source[2, 1]; m[2, 2] = _Source[2, 2];
}