NvTriStrip.cs

   1 using System;\r
   2 using System.Collections.Generic;\r
   3 using System.Text;\r
   4 using System.Runtime.InteropServices;\r
   5 \r
   6 namespace Tso2MqoGui\r
   7 {\r
   8     public enum PrimType\r
   9     {\r
  10             PT_LIST,\r
  11             PT_STRIP,\r
  12             PT_FAN\r
  13     }\r
  14 \r
  15     public unsafe struct PrimitiveGroup\r
  16     {\r
  17             public PrimType type;\r
  18             public uint     numIndices;\r
  19             public ushort*  indices;\r
  20     }\r
  21 \r
  22     public unsafe class NvTriStrip\r
  23     {\r
  24         public static ushort[] Optimize(ushort[] triangles)\r
  25         {\r
  26             fixed(ushort* p= &triangles[0])\r
  27             {\r
  28                     SetStitchStrips(true);\r
  29 \r
  30                 PrimitiveGroup* pg  = null;\r
  31                 ushort          num = 0;\r
  32                 bool            rc  = GenerateStrips(p, (uint)triangles.Length, &pg, &num, false);\r
  33 \r
  34                 if(!rc)                                 throw new Exception();\r
  35 \r
  36                 try\r
  37                 {\r
  38                     if(num != 1)                        throw new Exception();\r
  39                     if(pg[0].type != PrimType.PT_STRIP) throw new Exception();\r
  40 \r
  41                     ushort[]    nidx= new ushort[pg[0].numIndices];\r
  42 \r
  43                     for(int i= 0; i < nidx.Length; ++i)\r
  44                         nidx[i] = pg[0].indices[i];\r
  45 \r
  46                     return nidx;\r
  47                 } finally\r
  48                 {\r
  49                     DeletePrimitiveGroup(pg);\r
  50                 }\r
  51             }\r
  52         }\r
  53 \r
  54       //[DllImport("NvTriStrip.dll")] public extern static int GetPicture(byte* file, int len, uint flag, out IntPtr pHBInfo, out IntPtr pHBm, void* lpPrgressCallback, uint lData); \r
  55         [DllImport("NvTriStrip.dll")] public extern static void EnableRestart(uint _restartVal);\r
  56         [DllImport("NvTriStrip.dll")] public extern static void DisableRestart();\r
  57         [DllImport("NvTriStrip.dll")] public extern static void SetListsOnly(bool _bListsOnly);\r
  58         [DllImport("NvTriStrip.dll")] public extern static void SetCacheSize(uint _cacheSize);\r
  59         [DllImport("NvTriStrip.dll")] public extern static void SetStitchStrips(bool _bStitchStrips);\r
  60         [DllImport("NvTriStrip.dll")] public extern static void SetMinStripSize(uint _minStripSize);\r
  61       //[DllImport("NvTriStrip.dll")] public extern static void Cleanup(NvStripInfoVec& tempStrips, NvFaceInfoVec& tempFaces);\r
  62         [DllImport("NvTriStrip.dll")] public extern static bool SameTriangle(ushort firstTri0, ushort firstTri1, ushort firstTri2, ushort secondTri0, ushort secondTri1, ushort secondTri2);\r
  63       //[DllImport("NvTriStrip.dll")] public extern static bool TestTriangle(ushort v0, ushort v1, ushort v2, const std::vector<NvFaceInfo>* in_bins, const int NUMBINS);\r
  64         [DllImport("NvTriStrip.dll")] public extern static void DeletePrimitiveGroup(PrimitiveGroup* primGroups);\r
  65         [DllImport("NvTriStrip.dll")] public extern static bool GenerateStrips(ushort* in_indices, uint in_numIndices, PrimitiveGroup** primGroups, ushort* numGroups, bool validateEnabled);\r
  66         [DllImport("NvTriStrip.dll")] public extern static void RemapIndices(PrimitiveGroup* in_primGroups, ushort numGroups, ushort numVerts, PrimitiveGroup** remappedGroups);\r
  67     }\r
  68 }\r