void OnGUI()
{
mWidth = EditorGUI.IntField(new Rect(0, 0, position.width, 15), "Width", mWidth);
mHeight = EditorGUI.IntField(new Rect(0, 20, position.width, 15), "Height", mHeight);
mColor = EditorGUI.ColorField(new Rect(0, 40, position.width, 15), "Color", mColor);
GUILayout.Space(60);
if (GUILayout.Button("Create"))
{
string saveFilePath = EditorUtility.SaveFilePanelInProject(
"Create texture file as PNG",
"NewTexture",
"png",
"Please enter the new texture file name");
Texture2D tex = YoctoHelper.CreateTexture(mWidth, mHeight, mColor);
YoctoHelper.SaveTextureToFile(tex, saveFilePath);
AssetDatabase.Refresh();
}
}
void OnGUI()
{
mWidth = EditorGUI.IntField(new Rect(0, 0, position.width, 15), "Width", mWidth);
mHeight = EditorGUI.IntField(new Rect(0, 20, position.width, 15), "Height", mHeight);
GUILayout.Space(50);
if (GUILayout.Button("Generate"))
{
// 先创建一个sprite sheet贴图文件
Texture2D spriteSheet = new Texture2D(mWidth, mHeight, TextureFormat.ARGB32, false);
YoctoHelper.SetTextureColor(spriteSheet, Color.clear);
// 讲选中的texture都合成写入到创建好的sprite sheet中
List <SpriteMetaData> spriteList = new List <SpriteMetaData>();
int curX = 0; //当前可进行像素填充的坐标
int curY = 0;
int curLineMaxHeight = 0;
foreach (Object obj in Selection.objects)
{
Texture2D tex = (Texture2D)obj;
if (tex != null)
{
string assetPath = AssetDatabase.GetAssetPath(obj);
TextureImporter importer = (TextureImporter)TextureImporter.GetAtPath(assetPath);
bool saveIsReadable = importer.isReadable;
TextureImporterFormat saveFormat = importer.textureFormat;
importer.isReadable = true;
importer.textureFormat = TextureImporterFormat.ARGB32;
importer.SaveAndReimport();
if (tex.width > spriteSheet.width)
{
continue;
}
if (curX + tex.width > spriteSheet.width) // 换行
{
curX = 0;
curY += curLineMaxHeight;
curLineMaxHeight = 0;
}
if (curY + tex.height > spriteSheet.height) // 超出高度
{
continue;
}
Color[] cols = tex.GetPixels();
spriteSheet.SetPixels(curX, curY, tex.width, tex.height, cols);
// 记录当前sprite在sprite sheet中的信息
SpriteMetaData sprite = new SpriteMetaData();
sprite.name = tex.name;
sprite.rect = new Rect(curX, curY, tex.width, tex.height);
sprite.pivot = new Vector2(0.5f, 0.5f);
spriteList.Add(sprite);
curX += tex.width;
if (tex.height > curLineMaxHeight)
{
curLineMaxHeight = tex.height;
}
importer.isReadable = saveIsReadable;
importer.textureFormat = saveFormat;
importer.SaveAndReimport();
}
}
spriteSheet.Apply();
// 保存sprite sheet贴图到文件并在导入设置中关联好子sprite信息
string saveFilePath = EditorUtility.SaveFilePanelInProject(
"Create texture file as PNG",
"NewTexture",
"png",
"Please enter the new texture file name");
YoctoHelper.SaveTextureToFile(spriteSheet, saveFilePath);
AssetDatabase.Refresh();
TextureImporter atlasImporter = (TextureImporter)TextureImporter.GetAtPath(saveFilePath);
atlasImporter.isReadable = false;
atlasImporter.textureFormat = TextureImporterFormat.AutomaticCompressed;
atlasImporter.textureType = TextureImporterType.Sprite;
atlasImporter.spriteImportMode = SpriteImportMode.Multiple;
atlasImporter.spritesheet = spriteList.ToArray();
atlasImporter.SaveAndReimport();
}
}