Accord.Math.Matrix4x4.CreateFromRotation C# (CSharp) Method

        public static Matrix4x4 CreateFromRotation(Matrix3x3 rotationMatrix)
        {
            Matrix4x4 m = Matrix4x4.Identity;

            m.V00 = rotationMatrix.V00;
            m.V01 = rotationMatrix.V01;
            m.V02 = rotationMatrix.V02;

            m.V10 = rotationMatrix.V10;
            m.V11 = rotationMatrix.V11;
            m.V12 = rotationMatrix.V12;

            m.V20 = rotationMatrix.V20;
            m.V21 = rotationMatrix.V21;
            m.V22 = rotationMatrix.V22;

            return m;
        }