float *pxf ;
Horde3D :: getNodeTransformMatrices (plane , NULL , ( const float **) &pxf );
Matrix44f planeXform ;
planeXform .set (pxf );

IntPtr hordePointer;
// write Horde matrix to Intpointer
Horde3D.getNodeTransformMatrices(env, out test, out hordePointer);

IntPtr[] testArray = new IntPtr[4];
// get the 4 intpointers out of the hordepointer
for (int i = 0; i < Marshal.SizeOf(hordePointer); i++) {
   testArray[i] = Marshal.ReadIntPtr(hordePointer, i * Marshal.SizeOf(typeof (IntPtr)));
}

IntPtr nullPointer;
IntPtr hordePointer;
// nullPointer wird nicht benötigt
Horde3D.getNodeTransformMatrices(env, out nullPointer, out hordePointer);

for (int i = 0; i < 16; i++) {
    Console.WriteLine(Marshal.ReadIntPtr(hordePointer, i * Marshal.SizeOf(typeof(IntPtr))));
}

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IntPtr nullPointer;
IntPtr hordePointer;
// don't need the relMat
Horde3D.getNodeTransformMatrices(_cam, out nullPointer, out hordePointer);

float[] floats = new float[16];
Marshal.Copy(hordePointer, floats, 0, 16);

// Print all 16 values of the Transformation Matrix
for (int i = 0; i < 16; i++) {
    Console.Writeline(floats[i]);
}

public static GeneralMatrix GetTransformMatrix(int node) {
    IntPtr nullPointer;
    IntPtr hordePointer;
    // nullPointer wird nicht benötigt
    Horde3D.getNodeTransformMatrices(node, out nullPointer, out hordePointer);
    float[] floats = new float[16];
    Marshal.Copy(hordePointer, floats, 0, 16);
   
    GeneralMatrix m = new GeneralMatrix(4, 4);
    for (int i = 0; i < 16; i++) {
        m.SetElement(i / 4, i % 4, floats[i]);
    }
    return m;
}

public static float[] MatrixToFloatArray(GeneralMatrix m) {
    float[] result = new float[16];
    for (int i = 0; i < 16; i++) {
        result[i] = (float)m.GetElement(i / 4, i % 4);
    }
    return result;
}