public static void OpenWindow(FxAtlasAssembler assembler = null)
{
var win = GetWindow <FxAtlasEditorWindow>();
win.titleContent = new GUIContent("FxAtlas Editor");
win.Show();
if (assembler)
{
win.assembler = assembler;
}
}
static Texture2D GeneratePackedTexture(FxAtlasAssembler assembler)
{
var renderTexture = new RenderTexture(assembler.AtlasWidth, assembler.AtlasHeight, 0);
renderTexture.Create();
var originalActive = RenderTexture.active;
RenderTexture.active = renderTexture;
GL.PushMatrix();
GL.LoadPixelMatrix(0, renderTexture.width, renderTexture.height, 0);
GL.Clear(true, true, Color.clear);
foreach (var sprite in assembler.Sprites)
{
if (sprite.Texture)
{
if (DrawTextureMaterial)
{
Graphics.DrawTexture(sprite.GetPixelRectFlipY(assembler.AtlasHeight),
sprite.Texture, new Rect(0, 0, 1, 1), 0, 0, 0, 0, DrawTextureMaterial, 0); //drawColor
Graphics.DrawTexture(sprite.GetPixelRectFlipY(assembler.AtlasHeight),
sprite.Texture, new Rect(0, 0, 1, 1), 0, 0, 0, 0, DrawTextureMaterial, 1); //drawAlpha
}
else
{
Graphics.DrawTexture(sprite.GetPixelRectFlipY(assembler.AtlasHeight),
sprite.Texture, new Rect(0, 0, 1, 1), 0, 0, 0, 0);
}
}
}
Texture2D tex2D = new Texture2D(renderTexture.width, renderTexture.height, TextureFormat.RGBA32, false);
tex2D.ReadPixels(new Rect(0, 0, renderTexture.width, renderTexture.height), 0, 0);
tex2D.Apply();
GL.PopMatrix();
RenderTexture.active = originalActive;
renderTexture.Release();
return(tex2D);
}
void GetAssembler()
{
EditorGUILayout.PrefixLabel("FxAtlas Editor");
assembler = (FxAtlasAssembler)EditorGUILayout.ObjectField(
assembler, typeof(FxAtlasAssembler), true);
}
public static bool SaveAtlas(FxAtlasAssembler assembler)
{
if (!assembler)
{
return(false);
}
string atlasAssetPath;
string atlasTexturePath;
FxAtlas atlasAsset = assembler.AtlasAsset;
Texture2D atlasTexture;
//没有atlas的时候，新建一个
if (atlasAsset == null)
{
atlasAssetPath = EditorUtility.SaveFilePanel("Save", "Assets", "atlas.asset", "asset");
if (string.IsNullOrEmpty(atlasAssetPath))
{
return(false);
}
else if (atlasAssetPath.EndsWith(".asset") == false)
{
Debug.LogError("must has .asset extension");
return(false);
}
atlasAssetPath = FileUtil.GetProjectRelativePath(atlasAssetPath);
atlasAsset = ScriptableObject.CreateInstance <FxAtlas>();
AssetDatabase.CreateAsset(atlasAsset, atlasAssetPath);
AssetDatabase.ImportAsset(atlasAssetPath, ImportAssetOptions.ForceUpdate);
atlasAsset = AssetDatabase.LoadAssetAtPath <FxAtlas>(atlasAssetPath);
}
else
{
//得到当前atlas的路径
atlasAssetPath = AssetDatabase.GetAssetPath(atlasAsset);
}
atlasTexturePath = atlasAssetPath.Replace(".asset", ".png");
atlasTexture = GeneratePackedTexture(assembler);
SavePackedTexture(atlasTexturePath, ref atlasTexture);
Undo.RecordObjects(new Object[] { assembler, atlasAsset }, "Save Atlas");
EditorUtility.SetDirty(assembler);
EditorUtility.SetDirty(atlasAsset);
atlasAsset.AtlasTexture = atlasTexture;
var sprites = new FxSprite[assembler.Sprites.Length];
for (int i = 0; i < assembler.Sprites.Length; i++)
{
sprites[i] = new FxSprite()
{
id = assembler.Sprites[i].ID,
name = assembler.Sprites[i].IdentityName,
scaleOffset = assembler.Sprites[i].GetUVRect(assembler.AtlasWidth, assembler.AtlasHeight)
};
}
atlasAsset.Sprites = sprites;
assembler.AtlasAsset = atlasAsset;
return(true);
}
