PhysX Candywrapper and MOgre - Ogre Addon Forums

Jo0oker

11-11-2010 20:10:18

[]Hello,

i am on trying to convert the following Code into C#/Mogre/Eyecm Wrapper:



NxHeightFieldDesc heightFieldDesc;

      heightFieldDesc.nbColumns      = desc.nbColumns;//65 in my case

      heightFieldDesc.nbRows         = desc.nbRows;//65 in my case

      heightFieldDesc.convexEdgeThreshold = 0;

      heightFieldDesc.thickness=0;

      

      // allocate storage for samples

      heightFieldDesc.samples         = new NxU32[desc.nbColumns*desc.nbRows];

      heightFieldDesc.sampleStride   = sizeof(NxU32);      

      NxU8* currentByte = (NxU8*)heightFieldDesc.samples;



      for (NxU32 row=0;row<desc.nbRows; row++)

      {

         for (NxU32 col = 0; col < desc.nbColumns; col++)

         {

            NxHeightFieldSample* currentSample = (NxHeightFieldSample*)currentByte;

            currentSample->height =(NxI16)*pTerrain->getHeightData(row,desc.nbColumns-1-col);      //I have to reverse the colomn to make the physx and graph match

            currentByte += heightFieldDesc.sampleStride;         

         }

      }

      NxHeightField* heightField = GetPhysicsSDK()->createHeightField(heightFieldDesc);

      // data has been copied, we can free our buffer

      delete [] heightFieldDesc.samples;



      NxHeightFieldShapeDesc heightFieldShapeDesc; 

      heightFieldShapeDesc.heightField   = heightField;

      heightFieldShapeDesc.shapeFlags   = NX_SF_FEATURE_INDICES ;

      heightFieldShapeDesc.heightScale   = 1;

      heightFieldShapeDesc.rowScale      = desc.size.z / NxReal(desc.nbRows-1);//in my case,desc.size is the terrainworldsize 400*400

      heightFieldShapeDesc.columnScale   = desc.size.x / NxReal(desc.nbColumns-1);//in my case,desc.size is the terrainworldsize 400*400

      heightFieldShapeDesc.materialIndexHighBits = 0;   



      assert(heightFieldShapeDesc.isValid());      

      actorDesc.shapes.pushBack(&heightFieldShapeDesc);

      actorDesc.body         = NULL;

      actorDesc.globalPose.t.setx(desc.pos.x);

      actorDesc.globalPose.t.setz(desc.pos.z);

      actorDesc.globalPose.t.sety(desc.pos.y);



      assert(actorDesc.isValid());   

      pscene->createActor(actorDesc);

Can some one help me?

My First try failed:



            HeightFieldDesc myHeightFieldDesc = new HeightFieldDesc();

            UInt32 myCols, myRows;



            myCols = myRows = Size;



            Vector3 myScale = new Vector3(1, 1, 1);

            myHeightFieldDesc.ColumnCount = myCols;

            myHeightFieldDesc.RowCount = myRows;



            myHeightFieldDesc.ConvexEdgeThreshold = 0;

            myHeightFieldDesc.MakePinnedSampleArray2D(myCols, myRows);

            myHeightFieldDesc.SamplesByteStride = sizeof(UInt32);



            IntPtr currentByte = myHeightFieldDesc.SamplesPtr;

It would be very nice, if some one can help me!

lg,
Jo0oker

issingle

12-11-2010 13:06:12

in c#,pin some means pin the object's address ,and gc'll not move it,then you can access it using pointer.
in this case,after call HeightFieldSample[,] sampledata=myHeightFieldDesc.MakePinnedSampleArray2D(myCols, myRows);
u can fill data into sampledata through for statement.



for(int i=0;i<myCols;i++){

   for(int j=0;j<myRows;j++){

      sampleData[i,j].Height=terrian.GetHeightData(...)

   }

}

after fill data,then unpinall()