public SpriteTree InsertSprite(Sprite sprite)
{
if (Left != null || Right != null)
{
var node = Left.InsertSprite(sprite);
if (node != null)
{
return(node);
}
return(Right.InsertSprite(sprite));
}
else
{
int spriteWidth = ( int )sprite.Width + 1;
int spriteHeight = ( int )sprite.Height + 1;
if (Sprite != null)
{
return(null);
}
if (spriteWidth > Width || spriteHeight > Height)
{
return(null);
}
if (spriteWidth == Width && spriteHeight == Height)
{
Sprite = sprite;
return(this);
}
Left = new SpriteTree();
Right = new SpriteTree();
int w = Width - spriteWidth;
int h = Height - spriteHeight;
if (w > h)
{
Left.X = X;
Left.Y = Y;
Left.Width = spriteWidth;
Left.Height = Height;
Right.X = X + spriteWidth;
Right.Y = Y;
Right.Width = Width - spriteWidth;
Right.Height = Height;
}
else
{
Left.X = X;
Left.Y = Y;
Left.Width = Width;
Left.Height = spriteHeight;
Right.X = X;
Right.Y = Y + spriteHeight;
Right.Width = Width;
Right.Height = Height - spriteHeight;
}
return(Left.InsertSprite(sprite));
}
}
private static PackSpritesReturnData OrganizeSprites(int width, int height, int maxSize, List <Sprite> sprites)
{
var perfectFit = sprites.FirstOrDefault(
x => x.Width == maxSize && x.Height == maxSize);
if (perfectFit != null)
{
perfectFit.X = 0;
perfectFit.Y = 0;
var unFitSprites = new List <Sprite>(sprites);
unFitSprites.Remove(perfectFit);
return(new PackSpritesReturnData
{
OrganizedSprites = new List <Sprite>()
{
perfectFit
},
UnorganizedSprites = unFitSprites,
Width = maxSize,
Height = maxSize,
});
}
bool allOrganized = false;
while (!allOrganized)
{
var spriteTree = new SpriteTree
{
Width = width,
Height = height
};
allOrganized = true;
var unFitSprites = new List <Sprite>();
foreach (var sprite in sprites)
{
if (spriteTree.InsertSprite(sprite) == null)
{
allOrganized = false;
unFitSprites.Add(sprite);
}
}
if (allOrganized)
{
spriteTree.UpdateSprites();
}
else
{
if (width < maxSize || height < maxSize)
{
if (height < width)
{
height *= 2;
}
else
{
width *= 2;
}
}
else
{
spriteTree.UpdateSprites();
return(new PackSpritesReturnData
{
OrganizedSprites = sprites.Except(unFitSprites).ToList(),
UnorganizedSprites = unFitSprites,
Width = width,
Height = height,
});
}
}
}
return(new PackSpritesReturnData
{
OrganizedSprites = sprites,
UnorganizedSprites = new List <Sprite>(),
Width = width,
Height = height,
});
}
