在 OpenGL 中向路径旋转 [英] Rotating Towards Path in OpenGL

问题描述

我在如何根据 OpenGL 旋转函数 glRotatef(..) 在 3D 空间中旋转对象时遇到问题.

I am having trouble on how to rotate an object in 3D space, based on the OpenGL rotate function glRotatef(..).

glRotatef ( angle , x , y , z )

我的对象在 3D 空间中从一个点移动到另一个点.我希望我的对象沿它行进的方向旋转.

My object is traveling from one point to another in 3D space. I want my object to rotate in the direction it is traveling.

如果我知道我的起点和终点，我将如何找到 glRotatef(...) 函数所需的角度、x、y、z.

How would I find the angle, x, y, z that is needed for the glRotatef(...) function if I know the point where I am starting and the point where I am finishing.

推荐答案

gluLookAt 函数正是您在这里需要的.无需手动计算轴和角度.

The gluLookAt function is exactly what you need here. It will save you from calculating the axis and angle manually.

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