public uint Vertex(ref T x, ref T y)
{
uint cmd = (uint)Path.Commands.LineTo;
while (!Path.IsStop(cmd))
{
switch (m_status)
{
case Status.Initial:
Rewind(0);
goto case Status.Ready;
case Status.Ready:
if (m_src_vertices.Size() < 2 + (m_closed != 0 ? 1 : 0))
{
cmd = (uint)Path.Commands.Stop;
break;
}
m_status = (m_closed != 0) ? Status.Outline1 : Status.Cap1;
cmd = (uint)Path.Commands.MoveTo;
m_src_vertex = 0;
m_out_vertex = 0;
break;
case Status.Cap1:
m_stroker.CalcCap(m_out_vertices, m_src_vertices[0], m_src_vertices[1],
m_src_vertices[0].Dist);
m_src_vertex = 1;
m_prev_status = Status.Outline1;
m_status = Status.OutVertices;
m_out_vertex = 0;
break;
case Status.Cap2:
m_stroker.CalcCap(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 = Status.Outline2;
m_status = Status.OutVertices;
m_out_vertex = 0;
break;
case Status.Outline1:
if (m_closed != 0)
{
if (m_src_vertex >= m_src_vertices.Size())
{
m_prev_status = Status.CloseFirst;
m_status = Status.EndPoly1;
break;
}
}
else
{
if (m_src_vertex >= m_src_vertices.Size() - 1)
{
m_status = Status.Cap2;
break;
}
}
m_stroker.CalcJoin(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 = Status.OutVertices;
m_out_vertex = 0;
break;
case Status.CloseFirst:
m_status = Status.Outline2;
cmd = (uint)Path.Commands.MoveTo;
goto case Status.Outline2;
case Status.Outline2:
if (m_src_vertex <= (m_closed == 0 ? 1 : 0))
{
m_status = Status.EndPoly2;
m_prev_status = Status.Stop;
break;
}
--m_src_vertex;
m_stroker.CalcJoin(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 = Status.OutVertices;
m_out_vertex = 0;
break;
case Status.OutVertices:
if (m_out_vertex >= m_out_vertices.Size())
{
m_status = m_prev_status;
}
else
{
IVector <T> c = m_out_vertices[(int)m_out_vertex++];
x = c[0];
y = c[1];
return(cmd);
}
break;
case Status.EndPoly1:
m_status = m_prev_status;
return((uint)Path.Commands.EndPoly
| (uint)Path.Flags.Close
| (uint)Path.Flags.CCW);
case Status.EndPoly2:
m_status = m_prev_status;
return((uint)Path.Commands.EndPoly
| (uint)Path.Flags.Close
| (uint)Path.Flags.CW);
case Status.Stop:
cmd = (uint)Path.Commands.Stop;
break;
}
}
return(cmd);
}