// Vertex Generator Interface
public void RemoveAll()
{
m_src_vertices.RemoveAll();
m_closed = 0;
m_status = status_e.initial;
}
public uint Vertex(ref double x, ref double y)
{
uint cmd = (uint)Path.EPathCommands.LineTo;
while (!Path.IsStop(cmd))
{
switch (m_status)
{
case status_e.initial:
Rewind(0);
goto case status_e.ready;
case status_e.ready:
if (m_src_vertices.Size() < 2 + (m_closed != 0 ? 1 : 0))
{
cmd = (uint)Path.EPathCommands.Stop;
break;
}
m_status = (m_closed != 0) ? VcGenStroke.status_e.outline1 : VcGenStroke.status_e.cap1;
cmd = (uint)Path.EPathCommands.MoveTo;
m_src_vertex = 0;
m_out_vertex = 0;
break;
case status_e.cap1:
m_stroker.CaluclateCap(m_out_vertices, m_src_vertices[0], m_src_vertices[1],
m_src_vertices[0].dist);
m_src_vertex = 1;
m_prev_status = VcGenStroke.status_e.outline1;
m_status = VcGenStroke.status_e.out_vertices;
m_out_vertex = 0;
break;
case status_e.cap2:
m_stroker.CaluclateCap(m_out_vertices,
m_src_vertices[m_src_vertices.Size() - 1],
m_src_vertices[m_src_vertices.Size() - 2],
m_src_vertices[m_src_vertices.Size() - 2].dist);
m_prev_status = VcGenStroke.status_e.outline2;
m_status = VcGenStroke.status_e.out_vertices;
m_out_vertex = 0;
break;
case status_e.outline1:
if (m_closed != 0)
{
if (m_src_vertex >= m_src_vertices.Size())
{
m_prev_status = VcGenStroke.status_e.close_first;
m_status = VcGenStroke.status_e.end_poly1;
break;
}
}
else
{
if (m_src_vertex >= m_src_vertices.Size() - 1)
{
m_status = VcGenStroke.status_e.cap2;
break;
}
}
m_stroker.CalculateJoin(m_out_vertices,
m_src_vertices.prev(m_src_vertex),
m_src_vertices.curr(m_src_vertex),
m_src_vertices.next(m_src_vertex),
m_src_vertices.prev(m_src_vertex).dist,
m_src_vertices.curr(m_src_vertex).dist);
++m_src_vertex;
m_prev_status = m_status;
m_status = VcGenStroke.status_e.out_vertices;
m_out_vertex = 0;
break;
case status_e.close_first:
m_status = VcGenStroke.status_e.outline2;
cmd = (uint)Path.EPathCommands.MoveTo;
goto case status_e.outline2;
case status_e.outline2:
if (m_src_vertex <= (m_closed == 0 ? 1 : 0))
{
m_status = VcGenStroke.status_e.end_poly2;
m_prev_status = VcGenStroke.status_e.stop;
break;
}
--m_src_vertex;
m_stroker.CalculateJoin(m_out_vertices,
m_src_vertices.next(m_src_vertex),
m_src_vertices.curr(m_src_vertex),
m_src_vertices.prev(m_src_vertex),
m_src_vertices.curr(m_src_vertex).dist,
m_src_vertices.prev(m_src_vertex).dist);
m_prev_status = m_status;
m_status = VcGenStroke.status_e.out_vertices;
m_out_vertex = 0;
break;
case status_e.out_vertices:
if (m_out_vertex >= m_out_vertices.Size())
{
m_status = m_prev_status;
}
else
{
PointD c = m_out_vertices[(int)m_out_vertex++];
x = c.x;
y = c.y;
return(cmd);
}
break;
case status_e.end_poly1:
m_status = m_prev_status;
return((uint)Path.EPathCommands.EndPoly
| (uint)Path.EPathFlags.Close
| (uint)Path.EPathFlags.CounterClockwise);
case status_e.end_poly2:
m_status = m_prev_status;
return((uint)Path.EPathCommands.EndPoly
| (uint)Path.EPathFlags.Close
| (uint)Path.EPathFlags.Clockwise);
case status_e.stop:
cmd = (uint)Path.EPathCommands.Stop;
break;
}
}
return(cmd);
}