////////////////////////////////////////////////
static Polygons ExPolygons2Polygons(ExPolygons epgs)
{
Polygons result = new Polygons();
foreach (ExPolygon epg in epgs)
{
result.Add(epg.outer);
foreach (Polygon hole in epg.holes)
{
result.Add(hole);
}
}
return(result);
}
//---------------------------------------------------------------------
private void Form1_Load(object sender, EventArgs e)
{
mybitmap = new Bitmap(
pictureBox1.ClientRectangle.Width,
pictureBox1.ClientRectangle.Height,
PixelFormat.Format32bppArgb);
subjects = new Polygons();
clips = new Polygons();
solution = new Polygons();
exSolution = new ExPolygons();
toolStripStatusLabel1.Text =
"Tip: Use the mouse-wheel (or +,-,0) to adjust the offset of the solution polygons.";
DrawBitmap();
}
//------------------------------------------------------------------------------
public bool Execute(ClipType clipType, ExPolygons solution,
PolyFillType subjFillType, PolyFillType clipFillType)
{
if (m_ExecuteLocked) return false;
m_ExecuteLocked = true;
solution.Clear();
m_SubjFillType = subjFillType;
m_ClipFillType = clipFillType;
m_ClipType = clipType;
bool succeeded = ExecuteInternal(true);
//build the return polygons ...
if (succeeded) BuildResultEx(solution);
m_ExecuteLocked = false;
return succeeded;
}
//------------------------------------------------------------------------------
private void BuildResultEx(ExPolygons polyg)
{
polyg.Clear();
polyg.Capacity = m_PolyOuts.Count;
int i = 0;
while (i < m_PolyOuts.Count)
{
OutRec outRec = m_PolyOuts[i++];
if (outRec.pts == null) break; //nb: already sorted here
OutPt p = outRec.pts;
int cnt = PointCount(p);
if (cnt < 3) continue;
ExPolygon epg = new ExPolygon();
epg.outer = new Polygon(cnt);
epg.holes = new Polygons();
for (int j = 0; j < cnt; j++)
{
epg.outer.Add(p.pt);
p = p.next;
}
while (i < m_PolyOuts.Count)
{
outRec = m_PolyOuts[i];
if (outRec.pts == null || !outRec.isHole) break;
Polygon pg = new Polygon();
p = outRec.pts;
do
{
pg.Add(p.pt);
p = p.next;
} while (p != outRec.pts);
epg.holes.Add(pg);
i++;
}
polyg.Add(epg);
}
}
//------------------------------------------------------------------------------
public bool Execute(ClipType clipType, ExPolygons solution)
{
return Execute(clipType, solution,
PolyFillType.pftEvenOdd, PolyFillType.pftEvenOdd);
}
