在简单的实现

代码说明：

ROAM Simplistic Implementation By Bryan Turner [e-mail] January, 2000 Project file for MS Visual C++ 6.0. Requires GLUT DLL (www.opengl.org) Adjust program constants in Landscape.h and Utility.cpp. MAPS: Default map is read from HeghtXXX.raw where XXX is the MAP_SIZE (as defined in Landscape.h). If this map is not found, the program attempts to open "Map.ved", a Tread Marks map file. Tread Marks maps will only work for MAP_SIZE == 1024. Also, the MULT_SCALE to view Tread Marks maps correctly is "0.25f". (www.TreadMarks.com) CONTROLS: MOUSE - Hold Left Mouse Button to Rotate View Angle Q - Change Rendering Mode (Wireframe, Lit, Fill, Texture) O - Change View Mode (Observe, Follow, Drive, Fly) W/S - Move forward/back A/D - Rotate left/right (in Observe Mode only) F - Stop Animation R - Toggle Frustum Drawing 0/9 - More/Less Triangles per frame 1/2 - Adjust FOV-ROAM Simplistic Implementation By Bryan Tur