private static (Pen NonGatePen, Brush NonGateBrush, Brush GateBrush) SelectSiliconBrush(ILayerCell cell)
{
return(cell.IsBaseP()
? cell.IsBaseN()
? throw new InvalidOperationException("both P and N silicon on single cell")
: (PPen, PBrush, PGateBrush)
: cell.IsBaseN()
? (NPen, NBrush, NGateBrush)
: throw new InvalidOperationException("no silicon on cell"));
}
private (bool, SiliconLink, SiliconLayerContent) CheckSiliconLink(ILayerCell fromCell, ILayerCell toCell, Side side)
{
var fromBase = fromCell.IsBaseN() ? SiliconType.NType : SiliconType.PType;
var toBase = toCell.IsBaseN() ? SiliconType.NType : SiliconType.PType;
if (fromBase != toBase)
{
var(p1, p2) = side.GetPerpendicularSides();
return(toCell.Links[p1].SiliconLink == SiliconLink.BiDirectional &&
toCell.Links[p2].SiliconLink == SiliconLink.BiDirectional &&
toCell.Links[side].SiliconLink != SiliconLink.BiDirectional &&
!toCell.HasVia()
? (true, SiliconLink.Master, toCell.HasGate() ? toCell.Silicon : toBase.ConvertToGate(!side.IsVertical()))
: (false, SiliconLink.None, SiliconLayerContent.None));
}
else
{
return(fromCell.HasGate() || toCell.HasGate()
? (false, SiliconLink.None, SiliconLayerContent.None)
: (true, SiliconLink.BiDirectional, toCell.Silicon));
}
}