gistfile1.cpp

for(int i=0; i < mesh.getNumVertexs() / 2; i++ )
{
  // remove all even numbered vertexs: for loop "i" variable goes as follows
  // 0+1 = 1 // removes 1st vertex. Note: 1st vertex removed, so 2nd vertex in position of first, 3rd in position of 2nd
  // 1+1 = 2 // removes 3rd vertex, as it is now in the 2nd place!!
  // and so on...
  mesh.removeVertex(i+1);
}