利用Opengl设定MFC的视图环境，三维显示三维数据，处理大量点云数据的显示旋转、平移、缩放等-use Opengl set MFC View environment, three-dimensional display of 3D data, handling a large number of point cloud data show rotation, translation, zooming, etc.

openGL显示三维图像的程序，包括视图操作，视角控制，旋转，平移，-OpenGL display three-dimensional images of the procedure, including view operation, visual control, rotation, translation, and so on.

读3D点云数据 并显示出来 并从多个角度进行观察-read 3D points cloud file,and display