计算机图形学人机交互中三维拾取方法的研究

Research on 3-dimension pick-up of human-computer interaction in computer graphics

介绍了计算机图形学中三维图元拾取的基本原理.对基于射线通过各种计算机三维图形学对应变换实现选取方法进行了研究,并利用O penGL函数库和M icrosoft D irectX 9.0实现三维图元选取功能.通过实验证明,利用O penGL函数库和M icrosoft D irectX 9.0可以轻松实现各种坐标系间的坐标变换.射线拾取方法对提高编程效率、运行速度、渲染效率和拣选精度都很有效.

The basic principle of 3-D pick-up in computer graphics is introduced. Research on pick-up through corresponding changes of various computer graphics based on ray is conducted. And then picking up 3-D graphic units is implemented by utilizing OpenGL function library and Microsoft DirectX 9. 0. Experiments have proved that coordinate change among various coordinates can be easily implemented by OpenGL and Microsoft DirectX 9. 0. Ray pick-up is valid in increasing programming efficiency, operation speed, render efficiency and pick-up accuracy.