一个简单的OPENGL画球和立方体的程序。用鼠标拖动可以在视图上画出相应大小的球和立方体，并在树型列表中显示个数和名称。并与视图中的球和立方体相关联。能在视图中改变位置和大小。-a simple OpenGL ball and cube painting process. Drag the mouse can be used in the corresponding view on the size of a paint ball and cube and the tree list shows

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利用OPENGL在C++环境下，实现扫描转换、填充、裁剪算法-Using OPENGL in C++ environment, the realization of scan conversion, filling, cutting algorithm