opengl平移与glulookat [英] opengl panning with glulookat

问题描述

我想将相机横跨3D物体，向左或向右或上下移动。上下很容易（只是增加/减少y值）。当x为0或z为0时，左和右很容易。但是，当x或z都不为0时，只是用常数递增/递减不起作用。有没有数学公式为这？

I want to pan the camera across a 3d object, either left or right or up and down. Up and down is easy enough ( just increment/decrment the y value). Left and right is easy when x is 0 OR when z is 0. However in the case when neither x or z is 0, simply incrmeenting/decrementing by a constant does not work. Is there a mathematical formula for this?

推荐答案

这真的不重要什么值你的x OR z，gluLookAt

It really doesn't matter what value has your x OR z, gluLookAt() is just defining your starting point of view with current parameters.

我建议你阅读一些关于平移。这是非常好的文档，只有在理解原则后，你会闭上眼睛:)

I suggest you read some documentation about panning. It's very nice documentation, only after understanding the principle, you will do it with closed eyes :)

您可以在这里阅读更多关于LookAt函数：
1。 http://msdn.microsoft.com/en-us/library/windows/desktop/dd368663(v=vs.85).aspx
2.http：//www.felixgers.de/teaching/jogl/ gluLookAt.html

You can read more about LookAt function here: 1.http://msdn.microsoft.com/en-us/library/windows/desktop/dd368663(v=vs.85).aspx 2.http://www.felixgers.de/teaching/jogl/gluLookAt.html

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