public bool DoesOverlap(PizzaSlice other)
{
var overlapX = BottomRight.X >= other.TopLeft.X && TopLeft.X <= other.BottomRight.X;
var overlapY = BottomRight.Y >= other.TopLeft.Y && TopLeft.Y <= other.BottomRight.Y;
return(overlapX && overlapY);
}
private PizzaSlice EnlargeSlice(bool[,] pizzaCells, PizzaSlice slice)
{
bool enlarged = true;
while (enlarged)
{
PizzaSlice newSlice;
if (TryEnlargedSliceByWidth(pizzaCells, slice, out newSlice))
{
enlarged = true;
slice = newSlice;
MarkSlice(pizzaCells, slice);
}
else if (TryEnlargedSliceByHeight(pizzaCells, slice, out newSlice))
{
enlarged = true;
slice = newSlice;
MarkSlice(pizzaCells, slice);
}
else
{
enlarged = false;
}
}
return(slice);
}
protected override IEnumerable <PizzaSlice> Solve(int xStart, int yStart, int maxX, int maxY)
{
if (xStart > maxX || yStart > maxY)
{
return new PizzaSlice[] {}
}
;
var results = new List <PizzaSlice>();
int xEnd = xStart;
int yEnd = yStart;
while (true)
{
var currentSlice = new PizzaSlice(xStart, yStart, xEnd, yEnd);
if (IsSliceTooLarge(currentSlice))
{
results.AddRange(Solve(xEnd + 1, yStart, maxX, yEnd));
results.AddRange(Solve(xStart, yEnd + 1, maxX, maxY));
return(results);
}
if (IsEnoughIngredients(currentSlice))
{
results.Add(currentSlice);
results.AddRange(Solve(xEnd + 1, yStart, maxX, yEnd));
results.AddRange(Solve(xStart, yEnd + 1, maxX, maxY));
return(results);
}
if (yEnd == maxY && xEnd == maxX)
{
return new PizzaSlice[] {}
}
;
if (yEnd == maxY)
{
xEnd++;
}
else if (xEnd == maxX)
{
yEnd++;
}
else if (currentSlice.Height >= currentSlice.Width)
{
xEnd++;
}
else
{
yEnd++;
}
}
}
}
}
private static int GetCountInSlice(int[,] table, PizzaSlice slice)
{
var totalSum = table[slice.BottomRight.X, slice.BottomRight.Y];
var topSum = slice.TopLeft.Y == 0 ? 0 : table[slice.BottomRight.X, slice.TopLeft.Y - 1];
var leftSum = slice.TopLeft.X == 0 ? 0 : table[slice.TopLeft.X - 1, slice.BottomRight.Y];
var topLeftSum = slice.TopLeft.X == 0 || slice.TopLeft.Y == 0 ? 0 : table[slice.TopLeft.X - 1, slice.TopLeft.Y - 1];
return(totalSum - leftSum - topSum + topLeftSum);
}
private static void MarkSlice(bool[,] pizzaCells, PizzaSlice slice)
{
for (int y = slice.TopLeft.Y; y <= slice.BottomRight.Y; y++)
{
for (int x = slice.TopLeft.X; x <= slice.BottomRight.X; x++)
{
pizzaCells[x, y] = true;
}
}
}
private bool TryEnlargedSliceByHeight(bool[,] pizzaCells, PizzaSlice slice, out PizzaSlice newSlice)
{
if (slice.Width * (slice.Height + 1) > Pizza.MaxSliceSize)
{
newSlice = slice;
return(false);
}
if (slice.TopLeft.Y != 0)
{
bool succeed = true;
for (int x = slice.TopLeft.X; x <= slice.BottomRight.X; x++)
{
if (pizzaCells[x, slice.TopLeft.Y - 1])
{
succeed = false;
break;
}
}
if (succeed)
{
Coordinate newTopLeft = new Coordinate(slice.TopLeft.X, slice.TopLeft.Y - 1);
newSlice = new PizzaSlice(newTopLeft, slice.BottomRight);
return(true);
}
}
if (slice.BottomRight.Y != Pizza.YLength - 1)
{
bool succeed = true;
for (int x = slice.TopLeft.X; x <= slice.BottomRight.X; x++)
{
if (pizzaCells[x, slice.BottomRight.Y + 1])
{
succeed = false;
break;
}
}
if (succeed)
{
Coordinate newBottomRight = new Coordinate(slice.BottomRight.X, slice.BottomRight.Y + 1);
newSlice = new PizzaSlice(slice.TopLeft, newBottomRight);
return(true);
}
}
newSlice = slice;
return(false);
}
private bool TryEnlargedSliceByWidth(bool[,] pizzaCells, PizzaSlice slice, out PizzaSlice newSlice)
{
if (slice.Height * (slice.Width + 1) > Pizza.MaxSliceSize)
{
newSlice = slice;
return(false);
}
if (slice.TopLeft.X != 0)
{
bool succeed = true;
for (int y = slice.TopLeft.Y; y <= slice.BottomRight.Y; y++)
{
if (pizzaCells[slice.TopLeft.X - 1, y])
{
succeed = false;
break;
}
}
if (succeed)
{
Coordinate newTopLeft = new Coordinate(slice.TopLeft.X - 1, slice.TopLeft.Y);
newSlice = new PizzaSlice(newTopLeft, slice.BottomRight);
return(true);
}
}
if (slice.BottomRight.X != Pizza.XLength - 1)
{
bool succeed = true;
for (int y = slice.TopLeft.Y; y <= slice.BottomRight.Y; y++)
{
if (pizzaCells[slice.BottomRight.X + 1, y])
{
succeed = false;
break;
}
}
if (succeed)
{
Coordinate newBottomRight = new Coordinate(slice.BottomRight.X + 1, slice.BottomRight.Y);
newSlice = new PizzaSlice(slice.TopLeft, newBottomRight);
return(true);
}
}
newSlice = slice;
return(false);
}
public IEnumerable <PizzaSlice> EnlargeSlices(List <PizzaSlice> slices, Random rand)
{
bool[,] pizzaCells = GetUsedCells(slices);
List <PizzaSlice> newSlices = new List <PizzaSlice>();
while (slices.Any())
{
int index = rand.Next() % slices.Count;
PizzaSlice newSlice = EnlargeSlice(pizzaCells, slices[index]);
newSlices.Add(newSlice);
slices.RemoveAt(index);
}
return(newSlices);
}
public override bool Equals(object obj)
{
PizzaSlice other = obj as PizzaSlice;
return(other != null && Equals(this.TopLeft, other.TopLeft) && Equals(this.BottomRight, other.BottomRight));
}
protected override IEnumerable <PizzaSlice> Solve(int xStart, int yStart, int maxX, int maxY)
{
if (xStart > maxX || yStart > maxY)
{
return new PizzaSlice[] { }
}
;
var results = new List <PizzaSlice>();
int xEnd = xStart;
int yEnd = yStart;
int xIncrement = 0;
int yIncrement = 0;
while (true)
{
var currentSlice = new PizzaSlice(xStart, yStart, xEnd, yEnd);
if (IsSliceTooLarge(currentSlice))
{
var x1 = Solve(xEnd + 1, yStart, maxX, yEnd);
var x2 = Solve(xStart, yEnd + 1, maxX, maxY);
if (x1.Count() + x2.Count() == 0)
{
if (yStart == maxY)
{
xStart++;
}
else
{
yStart++;
}
continue;
}
results.AddRange(x1);
results.AddRange(x2);
return(results);
}
if (IsEnoughIngredients(currentSlice))
{
results.Add(currentSlice);
results.AddRange(Solve(xEnd + 1, yStart, maxX, yEnd));
results.AddRange(Solve(xStart, yEnd + 1, maxX, maxY));
return(results);
}
if (yEnd == maxY && xEnd == maxX)
{
return new PizzaSlice[] { }
}
;
if (yEnd == maxY)
{
xEnd++;
continue;
}
if (xEnd == maxX)
{
yEnd++;
continue;
}
if (xIncrement == 0 && yIncrement == 0)
{
xIncrement = 1;
xEnd++;
yIncrement = 0;
}
else if (xIncrement == 1 && yIncrement == 0)
{
xIncrement = 0;
xEnd--;
yIncrement = 1;
yEnd++;
}
else if (xIncrement == 0 && yIncrement == 1)
{
xIncrement = 1;
xEnd++;
yIncrement = 1;
}
else if (xIncrement == 1 && yIncrement == 1)
{
xIncrement = 1;
xEnd++;
yIncrement = 0;
}
}
}
private bool CheckSlice(PizzaSlice slice)
{
return(IsEnoughIngredients(slice) && !IsSliceTooLarge(slice));
}
public bool IsSliceTooLarge(PizzaSlice slice)
{
return(slice.Size > Pizza.MaxSliceSize);
}
public bool IsEnoughIngredients(PizzaSlice slice)
{
return(GetMushroomsInSlice(slice) >= Pizza.MinIngredientNum && GetTomatoInSlice(slice) >= Pizza.MinIngredientNum);
}
public bool IsSliceValid(PizzaSlice slice)
{
return(!IsSliceTooLarge(slice) && IsEnoughIngredients(slice));
}
public int GetTomatoInSlice(PizzaSlice slice)
{
return(GetCountInSlice(tomatoTable, slice));
}
public int GetMushroomsInSlice(PizzaSlice slice)
{
return(GetCountInSlice(mushroomTable, slice));
}