static void Main(string[] args)
{
GlobalValue.ImportConfig(File.ReadAllText("Config.json"));
File.WriteAllText("Config.json", GlobalValue.ExportConfig());
IGenerator generator = new RainbowCircleGenerator();
var img = generator.Generate <Rgba32>();
Console.WriteLine("Generate finished.");
img.Save(GlobalValue.outPath);
Console.WriteLine("Saved to " + GlobalValue.outPath);
}