private Texture2D ExportAndSaveAtlasTexture(int a_iAtlasEntryIndex, Texture2D a_rCurrentAtlasTexture, Texture2D a_rNewAtlasTexture, string a_oGeneratedDataPathLocal)
{
bool bNewTexture = false;
// Look if there's already a texture at desired path
if (a_rCurrentAtlasTexture == null)
{
// No => create the texture
bNewTexture = true;
}
else
{
string oFolderPathLocal = Uni2DEditorUtils.GetLocalAssetFolderPath(a_rCurrentAtlasTexture);
if (oFolderPathLocal != a_oGeneratedDataPathLocal)
{
bNewTexture = true;
}
}
// Set atlas name accordingly
if (bNewTexture)
{
a_rNewAtlasTexture.name = gameObject.name + "_AtlasTexture" + a_iAtlasEntryIndex;
}
else
{
a_rNewAtlasTexture.name = a_rCurrentAtlasTexture.name;
}
// Get the atlas texture path
string oAtlasTexturePathLocal = a_oGeneratedDataPathLocal + a_rNewAtlasTexture.name + ".png";
string oAtlasTexturePathGlobal = Uni2DEditorUtils.LocalToGlobalAssetPath(oAtlasTexturePathLocal);
// Save the atlas
FileStream oFileStream = new FileStream(oAtlasTexturePathGlobal, FileMode.Create);
BinaryWriter oBinaryWriter = new BinaryWriter(oFileStream);
oBinaryWriter.Write(a_rNewAtlasTexture.EncodeToPNG( ));
// Close IO resources
oBinaryWriter.Close( );
oFileStream.Close( );
// If we had just created a new texture set the default import settings
if (bNewTexture)
{
ImportNewAtlasTexture(oAtlasTexturePathLocal);
}
else
{
// or reimport
AssetDatabase.ImportAsset(oAtlasTexturePathLocal, ImportAssetOptions.ForceUpdate);
}
// Destroy the runtime-created instance
DestroyImmediate(a_rNewAtlasTexture);
// Save a ref to new atlas texture (by instancing its Unity serialized model)
a_rNewAtlasTexture = AssetDatabase.LoadAssetAtPath(oAtlasTexturePathLocal, typeof(Texture2D)) as Texture2D;
// Mark the atlas texture
Uni2DEditorUtils.MarkAsTextureAtlas(a_rNewAtlasTexture);
return(a_rNewAtlasTexture);
}