// Vertex Source Interface
public void Rewind(int idx)
{
if (m_status == StrokeMath.status_e.initial)
{
m_src_vertices.close(true);
if (m_auto_detect)
{
if (!ShapePath.is_oriented(m_orientation))
{
m_orientation = (agg_math.calc_polygon_area(m_src_vertices) > 0.0) ?
ShapePath.FlagsAndCommand.FlagCCW :
ShapePath.FlagsAndCommand.FlagCW;
}
}
if (ShapePath.is_oriented(m_orientation))
{
m_stroker.width(ShapePath.is_ccw(m_orientation) ? m_width : -m_width);
}
}
m_status = StrokeMath.status_e.ready;
m_src_vertex = 0;
}