public static void InitMPCVertexBuffer()
        {
            MpcMutex.WaitOne();
            try
            {
                if (mpcVertexBuffer == null)
                {
                    var mpcVertexBufferTemp = new KeplerPointSpriteSet[7];
                    ReadMPSCoreFile(@"c:\mpc\MPCORB.DAT");

                    mpcCount = MPCList.Count;
                    //KeplerVertexBuffer11 temp = new KeplerVertexBuffer11(mpcCount, RenderContext11.PrepDevice);

                    var lists = new List<KeplerVertex>[7];
                    for (var i = 0; i < 7; i++)
                    {
                        lists[i] = new List<KeplerVertex>();
                    }

                    foreach (var ee in MPCList)
                    {
                        var listID = 0;
                        if (ee.a < 2.5)
                        {
                            listID = 0;
                        }
                        else if (ee.a < 2.83)
                        {
                            listID = 1;
                        }
                        else if (ee.a < 2.96)
                        {
                            listID = 2;
                        }
                        else if (ee.a < 3.3)
                        {
                            listID = 3;
                        }
                        else if (ee.a < 5)
                        {
                            listID = 4;
                        }
                        else if (ee.a < 10)
                        {
                            listID = 5;
                        }
                        else
                        {
                            listID = 6;
                        }

                        var vert = new KeplerVertex();
                        vert.Fill(ee);

                        lists[listID].Add(vert);
                    }

                    for (var i = 0; i < 7; i++)
                    {
                        mpcVertexBufferTemp[i] = new KeplerPointSpriteSet(RenderContext11.PrepDevice, lists[i].ToArray());
                    }

                    mpcVertexBuffer = mpcVertexBufferTemp;
                }
            }
            finally
            {
                MpcMutex.ReleaseMutex();
            }
        }
        public static void InitMPCVertexBuffer()
        {
            MpcMutex.WaitOne();
            try
            {
                if (mpcVertexBuffer == null)
                {
                    KeplerPointSpriteSet[] mpcVertexBufferTemp = new KeplerPointSpriteSet[7];
                    MinorPlanets.ReadMPSCoreFile(@"c:\mpc\MPCORB.DAT");

                    mpcCount = MinorPlanets.MPCList.Count;
                    //KeplerVertexBuffer11 temp = new KeplerVertexBuffer11(mpcCount, RenderContext11.PrepDevice);

                    List <KeplerVertex>[] lists = new List <KeplerVertex> [7];
                    for (int i = 0; i < 7; i++)
                    {
                        lists[i] = new List <KeplerVertex>();
                    }

                    foreach (CAAEllipticalObjectElements ee in MinorPlanets.MPCList)
                    {
                        int listID = 0;
                        if (ee.a < 2.5)
                        {
                            listID = 0;
                        }
                        else if (ee.a < 2.83)
                        {
                            listID = 1;
                        }
                        else if (ee.a < 2.96)
                        {
                            listID = 2;
                        }
                        else if (ee.a < 3.3)
                        {
                            listID = 3;
                        }
                        else if (ee.a < 5)
                        {
                            listID = 4;
                        }
                        else if (ee.a < 10)
                        {
                            listID = 5;
                        }
                        else
                        {
                            listID = 6;
                        }

                        KeplerVertex vert = new KeplerVertex();
                        vert.Fill(ee);

                        lists[listID].Add(vert);
                    }

                    for (int i = 0; i < 7; i++)
                    {
                        mpcVertexBufferTemp[i] = new KeplerPointSpriteSet(RenderContext11.PrepDevice, lists[i].ToArray());
                    }

                    mpcVertexBuffer = mpcVertexBufferTemp;
                }
            }
            finally
            {
                MpcMutex.ReleaseMutex();
            }
        }