//----------------------------------------------------------------
public void Next()
{
m_interpolator.Next();
if (m_pos >= m_subdiv_size)
{
uint len = m_len;
if (len > m_subdiv_size)
{
len = (uint)m_subdiv_size;
}
m_interpolator.ReSynchronize((double)m_src_x / (double)subpixel_scale + len,
m_src_y,
len);
m_pos = 0;
}
m_src_x += subpixel_scale;
++m_pos;
--m_len;
}