private static int swIndex(AutoTile.Direction value)
{
//needed checks -> sw | s | w
var toTest = AutoTile.Direction.None;
if ((value & AutoTile.Direction.SouthWest) != 0)
{
toTest |= AutoTile.Direction.SouthWest;
}
if ((value & AutoTile.Direction.South) != 0)
{
toTest |= AutoTile.Direction.South;
}
if ((value & AutoTile.Direction.West) != 0)
{
toTest |= AutoTile.Direction.West;
}
switch (toTest)
{
case AutoTile.Direction.SouthWest | AutoTile.Direction.South | AutoTile.Direction.West:
return(10);
case AutoTile.Direction.SouthWest | AutoTile.Direction.West:
case AutoTile.Direction.West:
return(18);
case AutoTile.Direction.SouthWest | AutoTile.Direction.South:
case AutoTile.Direction.South:
return(8);
case AutoTile.Direction.West | AutoTile.Direction.South:
return(2);
}
return(16);
}
private static int neIndex(AutoTile.Direction value)
{
//needed checks -> ne | n | e
var toTest = AutoTile.Direction.None;
if ((value & AutoTile.Direction.NorthEast) != 0)
{
toTest |= AutoTile.Direction.NorthEast;
}
if ((value & AutoTile.Direction.North) != 0)
{
toTest |= AutoTile.Direction.North;
}
if ((value & AutoTile.Direction.East) != 0)
{
toTest |= AutoTile.Direction.East;
}
switch (toTest)
{
case AutoTile.Direction.NorthEast | AutoTile.Direction.North | AutoTile.Direction.East:
return(13);
case AutoTile.Direction.NorthEast | AutoTile.Direction.East:
case AutoTile.Direction.East:
return(5);
case AutoTile.Direction.NorthEast | AutoTile.Direction.North:
case AutoTile.Direction.North:
return(15);
case AutoTile.Direction.East | AutoTile.Direction.North:
return(1);
}
return(7);
}
private static int nwIndex(AutoTile.Direction value)
{
//needed checks -> nw | n | w
var toTest = AutoTile.Direction.None;
if ((value & AutoTile.Direction.NorthWest) != 0)
{
toTest |= AutoTile.Direction.NorthWest;
}
if ((value & AutoTile.Direction.North) != 0)
{
toTest |= AutoTile.Direction.North;
}
if ((value & AutoTile.Direction.West) != 0)
{
toTest |= AutoTile.Direction.West;
}
switch (toTest)
{
case AutoTile.Direction.NorthWest | AutoTile.Direction.North | AutoTile.Direction.West:
return(14);
case AutoTile.Direction.NorthWest | AutoTile.Direction.West:
case AutoTile.Direction.West:
return(6);
case AutoTile.Direction.NorthWest | AutoTile.Direction.North:
case AutoTile.Direction.North:
return(12);
case AutoTile.Direction.West | AutoTile.Direction.North:
return(0);
}
return(4);
}
private static int seIndex(AutoTile.Direction value)
{
//needed checks -> se | s | e
var toTest = AutoTile.Direction.None;
if ((value & AutoTile.Direction.SouthEast) != 0)
{
toTest |= AutoTile.Direction.SouthEast;
}
if ((value & AutoTile.Direction.South) != 0)
{
toTest |= AutoTile.Direction.South;
}
if ((value & AutoTile.Direction.East) != 0)
{
toTest |= AutoTile.Direction.East;
}
switch (toTest)
{
case AutoTile.Direction.SouthEast | AutoTile.Direction.South | AutoTile.Direction.East:
return(9);
case AutoTile.Direction.SouthEast | AutoTile.Direction.East:
case AutoTile.Direction.East:
return(17);
case AutoTile.Direction.SouthEast | AutoTile.Direction.South:
case AutoTile.Direction.South:
return(11);
case AutoTile.Direction.East | AutoTile.Direction.South:
return(3);
}
return(19);
}
