public void ConstructPolyLines()
{
try
{
while (segments.Count != 0)
{
if (!segments[0].isValid)
{
segments.RemoveAt(0);
continue;
}
Polyline2D ply = new Polyline2D();
ply.Add(segments[0].p1);
Point2D curpt = segments[0].p2;
ply.Add(curpt);
polys.Add(ply);
segments.RemoveAt(0);
bool segmentFound = true;
while (segmentFound)
{
int i = 0;
segmentFound = false;
while (i < segments.Count)
{
Segment2D seg = segments[i];
if (seg.isValid && Object.ReferenceEquals(seg.p1, curpt))
{
curpt = seg.p2;
if (Object.ReferenceEquals(curpt, ply.points[0]))
{
ply.isClosed = true;
segments.RemoveAt(i);
segmentFound = false;
break;
}
ply.Add(curpt);
segments.RemoveAt(i);
segmentFound = true;
}
else if (seg.isValid && Object.ReferenceEquals(seg.p2, ply.points[0]))
{
ply.points.Insert(0, seg.p1);
segments.RemoveAt(i);
segmentFound = true;
}
else
{
i++;
}
}
}
}
}
catch (Exception ex)
{
DebugLogger.Instance().LogError(ex);
}
}
public void ConstructPolyLines()
{
try
{
while (segments.Count != 0)
{
if (!segments[0].isValid)
{
segments.RemoveAt(0);
continue;
}
Polyline2D ply = new Polyline2D();
ply.Add(segments[0].p1);
Point2D curpt = segments[0].p2;
ply.Add(curpt);
polys.Add(ply);
segments.RemoveAt(0);
bool segmentFound = true;
while (segmentFound)
{
int i = 0;
segmentFound = false;
while (i < segments.Count)
{
Segment2D seg = segments[i];
if (seg.isValid && Object.ReferenceEquals(seg.p1, curpt))
{
curpt = seg.p2;
if (Object.ReferenceEquals(curpt, ply.points[0]))
{
ply.isClosed = true;
segments.RemoveAt(i);
segmentFound = false;
break;
}
ply.Add(curpt);
segments.RemoveAt(i);
segmentFound = true;
}
else if (seg.isValid && Object.ReferenceEquals(seg.p2, ply.points[0]))
{
ply.points.Insert(0, seg.p1);
segments.RemoveAt(i);
segmentFound = true;
}
else
i++;
}
}
}
}
catch (Exception ex)
{
DebugLogger.Instance().LogError(ex);
}
}
public StreamWriter GenerateSVG(double width, double height, bool isFillPoly)
{
MemoryStream ms = new MemoryStream();
StreamWriter sw = new StreamWriter(ms);
//double width = UVDLPApp.Instance().m_printerinfo.m_PlatXSize;
//double height = UVDLPApp.Instance().m_printerinfo.m_PlatYSize;
sw.WriteLine("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>");
sw.WriteLine("<!-- Created with CreationWorkshop (http://www.envisionlabs.net/) -->");
sw.WriteLine();
sw.WriteLine("<svg width=\"{0}mm\" height=\"{1}mm\" viewBox=\"{2} {3} {0} {1}\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">", width, height, -width / 2, -height / 2);
if (isFillPoly)
{
// sort polygons into display layers
//int[] dispLevel = new int[lstPoly.Count];
int i, j, k;
int maxLevel = 0;
for (i = 0; i < polys.Count; i++)
{
if (!polys[i].isClosed)
{
continue;
}
polys[i].level = 0;
for (j = 0; j < polys.Count; j++)
{
if ((j == i) || !polys[j].isClosed)
{
continue;
}
if (polys[j].PointInPoly(polys[i].points[0]))
{
polys[i].level++;
}
}
if (polys[i].level > maxLevel)
{
maxLevel = polys[i].level;
}
}
// draw polygons layer by layer
for (k = 0; k <= maxLevel; k++)
{
for (j = 0; j < polys.Count; j++)
{
if (polys[j].level != k)
{
continue;
}
Polyline2D pl = polys[j];
int plen = pl.nPoints;
// determine polygon direction
double dir = 0;
for (i = 1; i < plen; i++)
{
dir += (pl.points[i].x - pl.points[i - 1].x) * (pl.points[i].y + pl.points[i - 1].y);
}
dir += (pl.points[0].x - pl.points[plen - 1].x) * (pl.points[0].y + pl.points[plen - 1].y);
// draw polygon
sw.Write("<polygon points=\"");
for (i = 0; i < plen; i++)
{
sw.Write("{0},{1}", pl.points[i].x, -pl.points[i].y);
if (i < (plen - 1))
{
sw.Write(" ");
}
}
sw.WriteLine("\" style=\"fill:{0}\" />", dir < 0 ? "black" : "white");
// - for some resaon it seems
// that polygon direction does not work properly so i use layer level instead.
//sw.WriteLine("\" style=\"fill:{0}\" />", (k & 1) == 1 ? "black" : "white");
}
}
}
else
{
sw.Write("<path d=\"");
foreach (Polyline2D pl in polys)
{
int plen = pl.nPoints;
for (int i = 0; i < plen; i++)
{
if (i == 0)
{
sw.Write("M{0} {1} ", pl.points[i].x, -pl.points[i].y);
}
else
{
sw.Write("L{0} {1} ", pl.points[i].x, -pl.points[i].y);
}
}
sw.WriteLine("Z ");
}
sw.WriteLine("\" />");
}
//<path d="M 15 2 L9.5 18.0 L25.5 22.0 Z M 15.0 0 L7.5 20.0 L22.5 20.0 Z" fill-rule="evenodd"/>
sw.WriteLine("</svg>");
sw.Flush();
sw.BaseStream.Seek(0, SeekOrigin.Begin);
return(sw);
}