public static Matrix4x4 CreateFromRotation( Matrix3x3 rotationMatrix )
Public Shared Function CreateFromRotation ( rotationMatrix As Matrix3x3 ) As Matrix4x4
The source 3x3 rotation matrix is copied into the top left corner of the result 4x4 matrix, i.e. it represents 0th, 1st and 2nd row/column. The V33 element is set to 1 and the rest elements of 3rd row and 3rd column are set to zeros.