using System;
|
using System.Linq;
|
using UnityEngine;
|
using UnityEditor;
|
using UnityEditor.Sprites;
|
using System.Collections.Generic;
|
|
// DefaultPackerPolicy will pack rectangles no matter what Sprite mesh type is unless their packing tag contains "[TIGHT]".
|
class CustomSpritePacker : UnityEditor.Sprites.IPackerPolicy
|
{
|
protected class Entry
|
{
|
public Sprite sprite;
|
public AtlasSettings settings;
|
public string atlasName;
|
public SpritePackingMode packingMode;
|
}
|
|
public virtual int GetVersion() { return 1; }
|
|
protected virtual string TagPrefix { get { return "[TIGHT]"; } }
|
protected virtual bool AllowTightWhenTagged { get { return true; } }
|
|
public bool AllowSequentialPacking => true;
|
|
public void OnGroupAtlases(BuildTarget target, PackerJob job, int[] textureImporterInstanceIDs)
|
{
|
List<Entry> entries = new List<Entry>();
|
|
foreach (int instanceID in textureImporterInstanceIDs)
|
{
|
TextureImporter ti = EditorUtility.InstanceIDToObject(instanceID) as TextureImporter;
|
TextureFormat textureFormat;
|
ColorSpace colorSpace;
|
int compressQuality;
|
ti.ReadTextureImportInstructions( target,out textureFormat,out colorSpace,out compressQuality);
|
|
TextureImporterSettings tis = new TextureImporterSettings();
|
ti.ReadTextureSettings(tis);
|
|
Sprite[] sprites = AssetDatabase.LoadAllAssetRepresentationsAtPath(ti.assetPath).Select(x => x as Sprite).Where(x => x != null).ToArray();
|
foreach (Sprite sprite in sprites)
|
{
|
//在这里设置每个图集的参数
|
Entry entry = new Entry();
|
entry.sprite = sprite;
|
entry.settings.format = textureFormat;
|
entry.settings.colorSpace = colorSpace;
|
entry.settings.compressionQuality = compressQuality;
|
entry.settings.filterMode = Enum.IsDefined(typeof(FilterMode), ti.filterMode) ? ti.filterMode : FilterMode.Bilinear;
|
entry.settings.maxWidth = 2048;
|
entry.settings.maxHeight = 2048;
|
entry.atlasName = ParseAtlasName(ti.spritePackingTag);
|
entry.packingMode = GetPackingMode(ti.spritePackingTag, tis.spriteMeshType);
|
|
entries.Add(entry);
|
}
|
|
Resources.UnloadAsset(ti);
|
}
|
|
// First split sprites into groups based on atlas name
|
var atlasGroups =
|
from e in entries
|
group e by e.atlasName;
|
foreach (var atlasGroup in atlasGroups)
|
{
|
int page = 0;
|
// Then split those groups into smaller groups based on texture settings
|
var settingsGroups =
|
from t in atlasGroup
|
group t by t.settings;
|
foreach (var settingsGroup in settingsGroups)
|
{
|
string atlasName = atlasGroup.Key;
|
if (settingsGroups.Count() > 1)
|
atlasName += string.Format(" (Group {0})", page);
|
|
job.AddAtlas(atlasName, settingsGroup.Key);
|
foreach (Entry entry in settingsGroup)
|
{
|
job.AssignToAtlas(atlasName, entry.sprite, entry.packingMode, SpritePackingRotation.None);
|
}
|
|
++page;
|
}
|
}
|
}
|
|
protected bool IsTagPrefixed(string packingTag)
|
{
|
packingTag = packingTag.Trim();
|
if (packingTag.Length < TagPrefix.Length)
|
return false;
|
return (packingTag.Substring(0, TagPrefix.Length) == TagPrefix);
|
}
|
|
private string ParseAtlasName(string packingTag)
|
{
|
string name = packingTag.Trim();
|
if (IsTagPrefixed(name))
|
name = name.Substring(TagPrefix.Length).Trim();
|
return (name.Length == 0) ? "(unnamed)" : name;
|
}
|
|
private SpritePackingMode GetPackingMode(string packingTag, SpriteMeshType meshType)
|
{
|
if (meshType == SpriteMeshType.Tight)
|
if (IsTagPrefixed(packingTag) == AllowTightWhenTagged)
|
return SpritePackingMode.Tight;
|
return SpritePackingMode.Rectangle;
|
}
|
}
|
