基于OpenGL的网格数据三维地形鼠标取值方法  

A Method of 3D Terrain Mouse Selection in Grid Data Based on OpenGL

作　　者：范益进[1] 龚声蓉[1] 

机构地区：[1]苏州大学计算机科学与技术学院,苏州215006

出　　处：《计算机工程与应用》2005年第32期100-102,共3页Computer Engineering and Applications

摘　　要：在OpenGL的三维场景模拟中,通过鼠标取点得到该点的三维坐标一直是一个难题,而在三维地形模拟中则进一步要求通过鼠标取点得到该点在地形数据中的实际值,即用鼠标取值,因此OpenGL三维地形的鼠标取值一直是这类应用程序中的难点。文章在解决实际问题的基础上实现了一种解决基于OpenGL的网格数据的三维地形的鼠标取值方法。Getting 3D coordinates of a point by mouse selection is a difficult problem in the scene of 3D simulation using OpenGL.And in the 3D terrain simulation the real values in the grid data are even required that is getting a point＇s real values in the grid data by mouse selection.Thus,the mouse selection in 3D terrain has always been a problem in such applications.On the basis of solving a practical project,this article realized a method of 3D terrain mouse selection in grid data based on OpenGL.

关 键 词：网格数据 三维地形 鼠标取值 坐标变换OpenGL 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]