private static bool IsHorizontal(OrthogonalLine.Direction direction)
{
if (direction == OrthogonalLine.Direction.Left || direction == OrthogonalLine.Direction.Right)
{
return(true);
}
return(false);
}
private static OrthogonalLine.Direction TransformDirection(OrthogonalLine.Direction originalDirection, Transformation transformation)
{
if (originalDirection == OrthogonalLine.Direction.Undefined)
{
throw new InvalidOperationException("Cannot transform direction when original direction is undefined");
}
switch (transformation)
{
case Transformation.MirrorX:
if (IsHorizontal(originalDirection))
{
return(originalDirection);
}
return(OrthogonalLine.GetOppositeDirection(originalDirection));
case Transformation.MirrorY:
if (IsHorizontal(originalDirection))
{
return(OrthogonalLine.GetOppositeDirection(originalDirection));
}
return(originalDirection);
case Transformation.Diagonal13:
switch (originalDirection)
{
case OrthogonalLine.Direction.Top:
return(OrthogonalLine.Direction.Right);
case OrthogonalLine.Direction.Right:
return(OrthogonalLine.Direction.Top);
case OrthogonalLine.Direction.Bottom:
return(OrthogonalLine.Direction.Left);
case OrthogonalLine.Direction.Left:
return(OrthogonalLine.Direction.Bottom);
default:
throw new ArgumentException();
}
case Transformation.Diagonal24:
switch (originalDirection)
{
case OrthogonalLine.Direction.Top:
return(OrthogonalLine.Direction.Left);
case OrthogonalLine.Direction.Right:
return(OrthogonalLine.Direction.Bottom);
case OrthogonalLine.Direction.Bottom:
return(OrthogonalLine.Direction.Right);
case OrthogonalLine.Direction.Left:
return(OrthogonalLine.Direction.Top);
default:
throw new ArgumentException();
}
}
throw new ArgumentException();
}