Extracting renderable mesh data from TSShapeInstance

...
TSShapeInstance*  mGeomShapeInstance; // defined in class
...
void AudioTextureObject::drawLineShape( F32 x1, F32 y1, F32 x2, F32 y2, const ColorI &color, F32 thickness)
{
   static U32 err = 0;
   static U32 last = 0;

   // check for meshes
   if(!mGeomShapeInstance)
      return;
   TSShape* tmpShape = mGeomShapeInstance->getShape();
   TSMesh* lineEnd=NULL;
   TSMesh* lineSegment=NULL;

   mGeomShapeInstance->setCurrentDetail(0);
   if(tmpShape){
      lineEnd = findShape(String("LineEnd0"));       
      lineSegment = findShape(String("LineEnd0"));           
   }else{     
      //Con::warnf("no shape"); 
      return;
   }

   if(!lineEnd || !lineSegment){
      //Con::warnf("no meshes"); 
      err = -1;
      //return;
   }else{
      err = 1;
   }

   if(err == -1 && last != err){
      last = err;
      Con::warnf("no meshes");       
   }

   if(err < 0)
      return;

   if(err == 1 && last != err){
      last = err;
      Con::warnf("meshes found"); 
   }

   
   GFXVertexBufferHandle<GFXVertexPCT> verts( GFX, totalverts, GFXBufferTypeVolatile );

   //Con::warnf("num verts %d",verts->mNumVerts);   

   F32 offset = thickness/2.0f;

   F32 xdiff = x2-x1;
   F32 ydiff = y2-y1;   

   Point3F vect(xdiff,ydiff,0.0f);   
   vect = mNormalize(vect); 
   Point2F ovect(offset*vect.x,offset*vect.y);

   verts.lock();
   
   for(U32 i = 0; i < lineEnd->mNumVerts; i++){
      verts[i].point = lineEnd->mVertexData[i].vert()*0.1f+Point3F(x1,y1,0.0f);      
      //Con::printf("point: %d:%.4f,%.4f,%.4f",i,verts[i].point.x,verts[i].point.y,verts[i].point.z);
      verts[i].color = color;
      //verts[i].color = lineEnd->mVertexData[i].color();
      verts[i].texCoord = lineEnd->mVertexData[i].tvert();
   }

   verts.unlock();

   GFX->setVertexBuffer( verts );    
   GFX->drawPrimitive( GFXTriangleStrip, 0, 2 );      
}

The problem with this code is that the vertices I get are not wound correctly. If I set winding to CW it show on triangle, and if I set it to CCW it shows the other. So by default the vertices returned are not in an order that will draw a triangle strip.

The question I have is: How do I convert them to a suitable triangle strip for rendering?