opengl从text里读取数据点的坐标，然后在opengl里画图-opengl read from the text in the coordinates of data points, and then drawing in opengl

使用Labwindows编写的Opengl程序，可以读取txt文本数据，控制小秋的轨迹，完全可用，前提是你必须安装OPENGL的开发包-Opengl procedures Labwindows written, you can read the txt text data, control Xiaoqiu trajectory, fully available, the premise is you must install OPENGL development kit

基于OpenGL的三维点云数据显示，可以选择浏览文件读入点云市局，鼠标点击、拖动和滑动可实现三维图形的旋转和缩放，最大可读入一百万个点，点云数据存在txt文件中，数据格式分别为x、y、z的坐标，具体以压缩文件中的3dcloud.txt为例-OpenGL-based 3D point cloud data show, you can browse the file is read into the point cloud PUC, mouse click, drag and swipe reali

1. Establish a suitable data structure, to achieve the grid model data what.txt read. 2. Draw what.txt in the grid data. 3. the establishment of appropriate three-dimensional observation, to create different projection mode, angle, observation of t