Cairo.NativeMethods.cairo_matrix_init_rotate C# (CSharp) Метод

        internal static extern void cairo_matrix_init_rotate(Matrix matrix, double radians);

 public void InitRotate(double radians)
 {
     /*
      * double s, c;
      * s = Math.Sin (radians);
      * c = Math.Cos (radians);
      * this.Init (c, s, -s, c, 0, 0);
      */
     NativeMethods.cairo_matrix_init_rotate(this, radians);
 }