The Enhanced MetaFile format (EMF) is the native vector graphics file format on Windows. Qt is a cross-platform application development framework, widely used for the development of GUI programs. Although it provides tools for almost every aspect of

irrilicht开源引擎，用于windows，mac等各个平台的图像开发-irrilicht engine， it‘s opensource

FASTGEO 2D/3D Computational Geometry Algorithms Release Version 5.0.1 Author: Arash Partow 1997-2005 Copyright notice: Free use of the FastGEO computational geometry library is permitted under the guidelines and in accordance wit