public void From_complex_form(int x, int y, DirectionPointer dp, CodelChooser cc)
{
var expected = new Codel(x, y);
var program = Runner.Load("Snippets.edge.png");
var block = program.SelectBlock(new Codel(2, 2));
var pointer = Pointer.Initial.Rotate((int)dp).Switch((int)cc);
var actual = block.Edge(pointer);
Assert.AreEqual(expected, actual);
}
public void From_1x1_form(DirectionPointer dp, CodelChooser cc)
{
var expected = new Codel(9, 0);
var program = Runner.Load("fibonacci_numbers.gif");
var block = program.SelectBlock(expected);
var pointer = Pointer.Initial.Rotate((int)dp).Switch((int)cc);
var actual = block.Edge(pointer);
Assert.AreEqual(expected, actual);
}
public static CodelChooser Switch(this CodelChooser cc, long times)
{
var value = ((long)cc + times) % 2;
return(value == 0 ? CodelChooser.left : CodelChooser.right);
}
public Codel FindFurthestCodel(DirectionPointer dp, CodelChooser cc)
{
int xFactor = 0, yFactor = 0;
switch (dp)
{
case DirectionPointer.Right:
xFactor = 1;
break;
case DirectionPointer.Down:
yFactor = 1;
break;
case DirectionPointer.Left:
xFactor = -1;
break;
case DirectionPointer.Up:
yFactor = -1;
break;
}
var edge = Codels.GroupBy(x => x.Position.x * xFactor + x.Position.y * yFactor).OrderBy(x => x.Key).Last();
xFactor = 0; yFactor = 0;
switch (dp)
{
case DirectionPointer.Right:
switch (cc)
{
case CodelChooser.Left:
yFactor = -1;
break;
case CodelChooser.Right:
yFactor = 1;
break;
}
break;
case DirectionPointer.Down:
switch (cc)
{
case CodelChooser.Left:
xFactor = 1;
break;
case CodelChooser.Right:
xFactor = -1;
break;
}
break;
case DirectionPointer.Left:
switch (cc)
{
case CodelChooser.Left:
yFactor = 1;
break;
case CodelChooser.Right:
yFactor = -1;
break;
}
break;
case DirectionPointer.Up:
switch (cc)
{
case CodelChooser.Left:
xFactor = -1;
break;
case CodelChooser.Right:
xFactor = 1;
break;
}
break;
}
var codel = edge.OrderBy(x => x.Position.x * xFactor + x.Position.y * yFactor).Last();
return codel;
}
