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Hello, your scripts are very usefule but there is a bug on the garbageRect list in AssetPacker.cs. Rectangle indexed are not corresponding. Here the corrected script :
using DaVikingCode.RectanglePacking;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;
using UnityEngine.Events;
namespace DaVikingCode.AssetPacker {
public class AssetPacker : MonoBehaviour {
public UnityEvent OnProcessCompleted;
public float pixelsPerUnit = 100.0f;
public bool useCache = false;
public string cacheName = "";
public int cacheVersion = 1;
public bool deletePreviousCacheVersion = true;
protected Dictionary<string, Sprite> mSprites = new Dictionary<string, Sprite>();
protected List<TextureToPack> itemsToRaster = new List<TextureToPack>();
protected bool allow4096Textures = false;
public void AddTextureToPack(string file, string customID = null) {
itemsToRaster.Add(new TextureToPack(file, customID != null ? customID : Path.GetFileNameWithoutExtension(file)));
}
public void AddTexturesToPack(string[] files) {
foreach (string file in files)
AddTextureToPack(file);
}
public void Process(bool allow4096Textures = false) {
this.allow4096Textures = allow4096Textures;
if (useCache) {
if (cacheName == "")
throw new Exception("No cache name specified");
string path = Application.streamingAssetsPath + "/AssetPacker/" + cacheName + "/" + cacheVersion + "/";
bool cacheExist = Directory.Exists(path);
if (!cacheExist)
StartCoroutine(createPack(path));
else
StartCoroutine(loadPack(path));
} else
StartCoroutine(createPack());
}
protected IEnumerator createPack(string savePath = "") {
if (savePath != "") {
if (deletePreviousCacheVersion && Directory.Exists(Application.streamingAssetsPath + "/AssetPacker/" + cacheName + "/"))
foreach (string dirPath in Directory.GetDirectories(Application.streamingAssetsPath + "/AssetPacker/" + cacheName + "/", "*", SearchOption.AllDirectories))
Directory.Delete(dirPath, true);
Directory.CreateDirectory(savePath);
}
List<Texture2D> textures = new List<Texture2D>();
List<string> images = new List<string>();
foreach (TextureToPack itemToRaster in itemsToRaster) {
WWW loader = new WWW("file:///" + itemToRaster.file);
yield return loader;
textures.Add(loader.texture);
images.Add(itemToRaster.id);
}
int textureSize = allow4096Textures ? 4096 : 2048;
List<Rect> rectangles = new List<Rect>();
for (int i = 0; i < textures.Count; i++)
{
if (textures[i].width > textureSize || textures[i].height > textureSize)
{
Debug.Log("A texture size is bigger than the sprite sheet size!");
}
else
{
rectangles.Add(new Rect(0, 0, textures[i].width, textures[i].height));
}
}
const int padding = 1 ;
int numSpriteSheet = 0;
while (rectangles.Count > 0) {
Texture2D texture = new Texture2D(textureSize, textureSize, TextureFormat.ARGB32, false);
Color32[] fillColor = texture.GetPixels32();
for (int i = 0; i < fillColor.Length; ++i)
fillColor[i] = Color.clear;
RectanglePacker packer = new RectanglePacker(texture.width, texture.height, padding);
for (int i = 0; i < rectangles.Count; i++)
{
packer.insertRectangle((int)rectangles[i].width, (int)rectangles[i].height, i);
}
packer.packRectangles();
if (packer.rectangleCount > 0) {
texture.SetPixels32(fillColor);
IntegerRectangle rect = new IntegerRectangle();
List<TextureAsset> textureAssets = new List<TextureAsset>();
List<int> garbageRect = new List<int>();
//List<Rect> garbageRect = new List<Rect>();
List<Texture2D> garabeTextures = new List<Texture2D>();
List<string> garbageImages = new List<string>();
for (int j = 0; j < packer.rectangleCount; j++) {
rect = packer.getRectangle(j, rect);
int index = packer.getRectangleId(j);
texture.SetPixels32(rect.x, rect.y, rect.width, rect.height, textures[index].GetPixels32());
TextureAsset textureAsset = new TextureAsset();
textureAsset.x = rect.x;
textureAsset.y = rect.y;
textureAsset.width = rect.width;
textureAsset.height = rect.height;
textureAsset.name = images[index];
textureAssets.Add(textureAsset);
garbageRect.Add(index);
//garbageRect.Add(rectangles[index]);
garabeTextures.Add(textures[index]);
garbageImages.Add(images[index]);
}
garbageRect.Sort();
garbageRect.Reverse();
for (int k = 0; k < garbageRect.Count; k++)
{
rectangles.RemoveAt(garbageRect[k]);
}
//foreach (Rect gRect in garbageRect)
//rectangles.Remove(gRect);
foreach (Texture2D gTex in garabeTextures)
textures.Remove(gTex);
foreach (string gImg in garbageImages)
images.Remove(gImg);
texture.Apply();
if (savePath != "") {
File.WriteAllBytes(savePath + "/data" + numSpriteSheet + ".png", texture.EncodeToPNG());
File.WriteAllText(savePath + "/data" + numSpriteSheet + ".json", JsonUtility.ToJson(new TextureAssets(textureAssets.ToArray())));
++numSpriteSheet;
}
foreach (TextureAsset textureAsset in textureAssets)
mSprites.Add(textureAsset.name, Sprite.Create(texture, new Rect(textureAsset.x, textureAsset.y, textureAsset.width, textureAsset.height), Vector2.zero, pixelsPerUnit, 0, SpriteMeshType.FullRect));
}
}
OnProcessCompleted.Invoke();
}
protected IEnumerator loadPack(string savePath) {
int numFiles = Directory.GetFiles(savePath).Length;
int _div = 2;
if (Application.platform == RuntimePlatform.WindowsEditor)
{
_div = 4;
}
for (int i = 0; i < numFiles / _div; ++i)
{
WWW loaderTexture = new WWW("file:///" + savePath + "/data" + i + ".png");
yield return loaderTexture;
WWW loaderJSON = new WWW("file:///" + savePath + "/data" + i + ".json");
yield return loaderJSON;
TextureAssets textureAssets = JsonUtility.FromJson<TextureAssets> (loaderJSON.text);
Texture2D t = loaderTexture.texture; // prevent creating a new Texture2D each time.
foreach (TextureAsset textureAsset in textureAssets.assets)
mSprites.Add(textureAsset.name, Sprite.Create(t, new Rect(textureAsset.x, textureAsset.y, textureAsset.width, textureAsset.height), Vector2.zero, pixelsPerUnit, 0, SpriteMeshType.FullRect));
}
yield return null;
OnProcessCompleted.Invoke();
}
public void Dispose() {
foreach (var asset in mSprites)
Destroy(asset.Value.texture);
mSprites.Clear();
}
void Destroy() {
Dispose();
}
public Sprite GetSprite(string id) {
Sprite sprite = null;
mSprites.TryGetValue (id, out sprite);
return sprite;
}
public Sprite[] GetSprites(string prefix) {
List<string> spriteNames = new List<string>();
foreach (var asset in mSprites)
if (asset.Key.StartsWith(prefix))
spriteNames.Add(asset.Key);
spriteNames.Sort(StringComparer.Ordinal);
List<Sprite> sprites = new List<Sprite>();
Sprite sprite;
for (int i = 0; i < spriteNames.Count; ++i) {
mSprites.TryGetValue(spriteNames[i], out sprite);
sprites.Add(sprite);
}
return sprites.ToArray();
}
}
}Metadata
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