private void InvertPolygon(uint start, uint end)
{
uint i;
uint tmp_PathAndFlags = m_vertices.Command(start);
--end; // Make "end" inclusive
// Shift all commands to one position
for (i = start; i < end; i++)
{
m_vertices.ModifyCommand(i, m_vertices.Command(i + 1));
}
// Assign starting command to the ending command
m_vertices.ModifyCommand(end, tmp_PathAndFlags);
// Reverse the polygon
while (end > start)
{
m_vertices.SwapVertices(start++, end--);
}
}