UVAtlas 是微软开发的 isochart 纹理地图集
This code is designed to build with Visual Studio 2010, 2012, or 2013. It requires the Windows 8.x SDK for functionality such as the DirectXMath library. Visual Studio 2012 and 2013 already include the appropriate Windows SDK, but Visual Studio 2010 users must install the standalone Windows 8.1 SDK.