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osgEarth的地形分页流程，我大致的写一下，感兴趣的话，大家可以去代码中看看，以MPEngine为例(osg tile TilePagedLOD* plod = new TilePagedLOD( _engineUID, _liveTiles, _deadTiles ); plod->setCenter ( bs.center() ); plod->addChild ( tileNode ); plod->setFileName( 1, Stringify() << tileNode->getKey().str() << "." << _engineUID << ".osgearth_engine_mp_tile" );)

说明：  实现如何使用顶点vertex来创造一个正方体(Implement a cube by using vertex)

OBJ文件读取程序：可以读取ASCII格式OBJ后缀的3D图形文件中的数据信息，并显示在屏幕上(a MATLAB program which gets the name of an ASCII OBJ file from the user, reads the 3D graphics information stored in the file, and displays the structure on the screen)

转动的彩色立方体（1~2人）谭飞、吴颖颖 1) 绘制一个不停转动的彩色立体球，可以绕着任意方向旋转； 2) 采用一定的光照明技术，考虑环境光、反射光以及镜面光的作用； 3) 采用消隐算法，体现立方体表面的遮挡关系； 4) 具有较好的动画效果，消除闪烁现象； 5) 不可以采用OpenGL中的函数。 (Rotating color cube (1 ~ 2)谭飞,吴颖颖1) draw a non-stop rotation of the color three-dimensional ball, you can spin around in any direction 2) the use of certain lighting technology, consider the ambient light, reflected light and the mirror The role of surface light 3) the use of blanking algorithm, reflecting the relationship between cube block surface 4) has good animation effects, to eliminate flicker phenomenon 5) can not be used in a function of OpenGL.)

ICP算法,主要用于三维点云数据的配准，最近点迭代算法，可以收敛到局部最小(registration of point cloud data,the iterated close point algorithm)

用于求取三维点云数据的法向量，我的人脸建模就是用的这个，效果很好，但必须保证点云没有重叠的，否则会出现严重错误。(Strike a 3D point cloud data for normal vectors, and my face is to use this model, the effect is very good, but must ensure that there is no overlap of the point cloud, there would be a serious mistake.)

vumat cod for hashin 3d

tkaelaortm anjswlms skeh ahfma

Visual C++结合OpenGL做的一个3D场景。其中包含地形生成，场景漫游，碰撞检测，场景中模拟了河流，跳跃的鱼，喷泉，树木，水草，房屋，塔楼，楼梯，飘动的旗帜等等。第一人称视角，可以跳跃行走碰撞检测，模拟了白天黑夜等等！(Visual C++ with OpenGL to do a 3D scene. Which contains the terrain generation, scene roaming, collision detection, simulation of the river scene, jumping fish, fountains, trees, plants, houses, towers, stairs, waving flags and so on. First-person perspective, you can skip walking collision detection, simulation of the day and night, and more!)

DEM三维可视化的简单程序，利用Open GL实现。(DEM visualization of simple procedures, the use of Open GL implementation.)