public PolygonOffset(IPolygonReader poly, bool isClosed = true, bool isOutline = true)
{
// testovani a vyhozeni vyjimek
if (poly == null)
{
throw (new ArgumentNullException("PolygonOffset(poly,..)"));
}
if (poly.Length < (isClosed ? 3 : 2))
{
throw (new FormatException("PolygonOffset, small number of points"));
}
mySrc = new MyPoint[poly.Length];
myRet = null;
IsClosed = isClosed;
IsOutline = isOutline;
// zjistim smer otaceni
myIsReversed = Funcs2D.PolygonIsClockwise(poly) == IsOutline;
for (int i = 0; i < poly.Length; i++)
{
poly.GetRow(i, out double x, out double y);
mySrc[i].Pt.X = x;
mySrc[i].Pt.Y = y;
mySrc[i].Id = i;
mySrc[i].Offset = 0;
}
if (!IsClosed)
{
mySrc[poly.Length - 1].Id = 0;
}
}