在openGL中旋转对象 [英] Rotate an object in openGL

问题描述

大家好，
我有一个用openGL绘制的矩形.我想根据鼠标移动旋转矩形
我的意思是，当我按顺时针方向移动鼠标时，则矩形应按顺时针方向移动；如果我按逆时针方向移动鼠标，则矩形应按逆时针方向移动.
我该如何在vc ++中做到这一点

提前谢谢您.

hi all,
i have a rectangle drawn with openGL. I want to rotate that rectangle based on mouse movement
i mean,when i move mouse on clockwise diretion, then the rectangle should move clockwise direction, and if i move the mouse on anticlockwise direction, then the rectangle should move on anticlockwise direction.
how can i do this in vc++

thank you in advance

推荐答案

根据在X或Y方向上的运动来查找nAngle ...

Find the nAngle based on movement in X or Y direction...

glRotatef( nAngle, 0,0, 1 );
glRectf( -0.5, -0.5, 0.5, 0.5 );

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