public static bool IsEmpty(this LineChar @this) => @this.IsNone() || [email protected]() && [email protected]();
public override char GetChar(LineChar charCenter, LineChar charLeft, LineChar charTop, LineChar charRight, LineChar charBottom)
{
if (charCenter.IsEmpty())
{
return('\0');
}
// 0 connections
if (charLeft.IsNone() && charTop.IsNone() && charRight.IsNone() && charBottom.IsNone())
{
return(GetSimpleChar(charCenter, MapSimple));
}
bool connectLeft = charCenter.IsHorizontal() && charLeft.IsHorizontal();
bool connectTop = charCenter.IsVertical() && charTop.IsVertical();
bool connectRight = charCenter.IsHorizontal() && charRight.IsHorizontal();
bool connectBottom = charCenter.IsVertical() && charBottom.IsVertical();
// 1 connection
if ((connectLeft ? 1 : 0) + (connectTop ? 1 : 0) + (connectRight ? 1 : 0) + (connectBottom ? 1 : 0) <= 1)
{
return(GetSimpleChar(charCenter, MapSimple));
}
// 4 connections
if (connectLeft && connectTop && connectRight && connectBottom)
{
return(GetChar(charCenter, MapLeftTopRightBottom));
}
// 3 connections
if (connectLeft && connectTop && connectRight)
{
return(GetChar(charCenter, MapLeftTopRight));
}
if (connectLeft && connectTop && connectBottom)
{
return(GetChar(charCenter, MapLeftTopBottom));
}
if (connectLeft && connectRight && connectBottom)
{
return(GetChar(charCenter, MapLeftRightBottom));
}
if (connectTop && connectRight && connectBottom)
{
return(GetChar(charCenter, MapTopRightBottom));
}
// 2 connections
if (connectTop && connectLeft)
{
return(GetChar(charCenter, MapTopLeft));
}
if (connectTop && connectRight)
{
return(GetChar(charCenter, MapTopRight));
}
if (connectBottom && connectRight)
{
return(GetChar(charCenter, MapBottomRight));
}
if (connectBottom && connectLeft)
{
return(GetChar(charCenter, MapBottomLeft));
}
if ((connectLeft && connectRight) || (connectTop && connectBottom))
{
return(GetSimpleChar(charCenter, MapSimple));
}
throw GetCharException(charCenter, charLeft, charTop, charRight, charBottom);
}
