public static GeometryRegion RectanglesToRegion(RectangleF[] rectsF1, RectangleF[] rectsF2,
params RectangleF[][] rectsFA)
{
using (var path = new GeometryGraphicsPath())
{
path.FillMode = FillMode.Winding;
if (rectsF1 != null && rectsF1.Length > 0)
{
path.AddRectangles(rectsF1);
}
if (rectsF2 != null && rectsF2.Length > 0)
{
path.AddRectangles(rectsF2);
}
foreach (RectangleF[] rectsF in rectsFA)
{
if (rectsF != null && rectsF.Length > 0)
{
path.AddRectangles(rectsF);
}
}
return(new GeometryRegion(path));
}
}
public static GeometryRegion RectanglesToRegion(Rectangle[] rects, int startIndex, int length)
{
GeometryRegion region;
if (length == 0)
{
region = GeometryRegion.CreateEmpty();
}
else
{
using (var path = new GeometryGraphicsPath())
{
path.FillMode = FillMode.Winding;
if (startIndex == 0 && length == rects.Length)
{
path.AddRectangles(rects);
}
else
{
for (int i = startIndex; i < startIndex + length; ++i)
{
path.AddRectangle(rects[i]);
}
}
region = new GeometryRegion(path);
path.Dispose();
}
}
return(region);
}