public FrameList Load(string folder)
{
var files = Directory.GetFiles(folder).Where(file => file.EndsWith(".png")).ToList();
files.Sort();
var frameList = new FrameList();
foreach (var file in files) {
frameList.AddFrame(file);
}
frameList.Name = new DirectoryInfo(folder).Name;
return frameList;
}
public SpriteSheet Combine(FrameList frameList)
{
// http://codeincomplete.com/posts/2011/5/7/bin_packing/
// http://jwezorek.com/2013/01/sprite-packing-in-python/
// http://www.blackpawn.com/texts/lightmaps/default.html
var sortedList = frameList.Frames.OrderByDescending(f => f.Height*f.Width);
_root = new Node() { Width = sortedList.First().Width, Height = sortedList.First().Height };
foreach (var frame in sortedList){
var node = FindNode(_root, frame.Width, frame.Height);
if (node != null){
var fit = SplitNode(node, frame.Width, frame.Height);
frame.PositionInSheetX = fit.X;
frame.PositionInSheetY = fit.Y;
}
else{
var fit = GrowNode(frame.Width, frame.Height);
frame.PositionInSheetX = fit.X;
frame.PositionInSheetY = fit.Y;
}
}
var finalImage = new Bitmap(_root.Width, _root.Height);
using (var g = Graphics.FromImage(finalImage)) {
//set background color
g.Clear(Color.Transparent);
foreach (var frame in frameList.Frames) {
g.DrawImage(frame.Bitmap, new Rectangle(frame.PositionInSheetX, frame.PositionInSheetY, frame.Width, frame.Height));
}
}
return new SpriteSheet(frameList, finalImage, frameList.Name);
}
public SpriteSheet Combine(FrameList frameList)
{
Bitmap finalImage = null;
try {
var width = 0;
var height = 0;
foreach (var frame in frameList.Frames) {
//update the size of the final bitmap
width += frame.Width;
height = frame.Height > height ? frame.Height : height;
}
finalImage = new Bitmap(width, height);
using (var g = Graphics.FromImage(finalImage)) {
//set background color
g.Clear(Color.Transparent);
//go through each image and draw it on the final image
var offsetX = 0;
const int offsetY = 0;
foreach (var frame in frameList.Frames) {
frame.PositionInSheetX = offsetX;
frame.PositionInSheetY = offsetY;
g.DrawImage(frame.Bitmap, new Rectangle(offsetX, offsetY, frame.Width, frame.Height));
offsetX += frame.Width;
}
}
} catch (Exception) {
if (finalImage != null)
finalImage.Dispose();
throw;
}
return new SpriteSheet(frameList, finalImage, frameList.Name);
}
public SpriteSheet(FrameList frameList, Bitmap image, string name)
{
FrameList = frameList;
Image = image;
Name = name;
}
public void AddFrames(FrameList frameList)
{
foreach (var frame in frameList.Frames) {
AddFrame(frame.FileName, frame.PositionInSheetX, frame.PositionInSheetY, frame.Width, frame.Height);
}
}
