public CurveLink(Curve curve, double ystart, double yend, int etag)
{
_curve = curve;
_ytop = ystart;
_ybot = yend;
_etag = etag;
if (_ytop < curve.GetYTop() || _ybot > curve.GetYBot())
{
throw new SystemException("bad curvelink [" + _ytop + "=>" + _ybot + "] for " + curve);
}
}
public bool Absorb(Curve curve, double ystart, double yend, int etag)
{
if (_curve != curve || _etag != etag ||
_ybot < ystart || _ytop > yend)
{
return false;
}
if (ystart < curve.GetYTop() || yend > curve.GetYBot())
{
throw new SystemException("bad curvelink [" + ystart + "=>" + yend + "] for " + curve);
}
_ytop = Math.Min(_ytop, ystart);
_ybot = Math.Max(_ybot, yend);
return true;
}