void WriteMultiSegment(MultiSegmentGeometry line)
{
IPointGeometry[] pts = line.Data;
List <PolylineVertex> acVertexList = new List <PolylineVertex>(pts.Length);
foreach (IPointGeometry p in pts)
{
acVertexList.Add(new PolylineVertex((float)p.X, (float)p.Y));
}
Polyline acLine = new Polyline(acVertexList);
acLine.Layer = m_Layer;
m_Dxf.AddEntity(acLine);
}
IRing GetRing(Ring r)
{
CurveSegmentCollection csc = new CurveSegmentCollection();
foreach (IDivider d in r.Edge)
{
LineGeometry line = d.LineGeometry;
ICurveSegmentAbstract cseg = null;
if (line is SectionGeometry)
{
SectionGeometry section = (line as SectionGeometry);
line = section.Make();
}
if (line is MultiSegmentGeometry)
{
MultiSegmentGeometry mseg = (line as MultiSegmentGeometry);
DirectPositionCollection dpc = GetDirectPositions(mseg.Data);
cseg = m_Factory.CreateLineStringSegment(dpc);
}
else if (line is SegmentGeometry)
{
SegmentGeometry segment = (line as SegmentGeometry);
DirectPositionCollection dpc = GetDirectPositions(new IPosition[] { segment.Start, segment.End });
cseg = m_Factory.CreateLineStringSegment(dpc);
}
else if (line is ArcGeometry)
{
ArcGeometry arc = (line as ArcGeometry);
IPosition mp = arc.GetMidPosition();
IDirectPosition bc = m_Factory.CreatePositionXY(arc.BC.X, arc.BC.Y);
IDirectPosition mid = m_Factory.CreatePositionXY(mp.X, mp.Y);
IDirectPosition ec = m_Factory.CreatePositionXY(arc.EC.X, arc.EC.Y);
cseg = m_Factory.CreateCircularArcSegment(bc, mid, ec);
}
else
{
throw new NotSupportedException("Unknown line type: " + line.GetType().Name);
}
csc.Add(cseg);
}
return(m_Factory.CreateRing(csc));
}
/// <summary>
/// Loads a list of positions with data for this line.
/// </summary>
/// <param name="positions">The list to append to</param>
/// <param name="reverse">Should the data be appended in reverse order?</param>
/// <param name="wantFirst">Should the first position be appended? (last if <paramref name="reverse"/> is true)</param>
/// <param name="arcTol">Tolerance for approximating circular arcs (the maximum chord-to-circumference distance).</param>
internal override void AppendPositions(List <IPosition> positions, bool reverse, bool wantFirst, ILength arcTol)
{
IPointGeometry[] approx = CircularArcGeometry.GetApproximation(this, arcTol);
MultiSegmentGeometry.AppendPositions(approx, positions, reverse, wantFirst);
}
void WriteMultiSegment(MultiSegmentGeometry line)
{
IPointGeometry[] pts = line.Data;
List<PolylineVertex> acVertexList = new List<PolylineVertex>(pts.Length);
foreach (IPointGeometry p in pts)
acVertexList.Add(new PolylineVertex((float)p.X, (float)p.Y));
Polyline acLine = new Polyline(acVertexList);
acLine.Layer = m_Layer;
m_Dxf.AddEntity(acLine);
}