详细解释 ScnVector4 方法 [英] Explaining in Detail the ScnVector4 method

问题描述

我长期使用 3ds max，我知道 xyz 轴.我在 xcode 中看到的 scnnode 是 scnvector4 的 w 组件.

I am using 3ds max for a long time and I know xyz axis. what I see in xcode in rotation the scnnode what made my mind blowed up is w component of scnvector4.

有人可以详细解释如何使用这种方法，因为我搜索了很多时间，但我无法让我的对象按照我的意愿旋转.任何人都可以帮助他旋转 180 度，但如果有人为进一步旋转解释更多，我将不胜感激，我知道我看到了这个链接，但我不明白.

Can someone explain in detail how to use this method because I searched a lot of time but I can't make my object spin as I desire. anyone can help to make him spin to his back in 180 degree but I will appreciate if someone explain more for further rotations, Knowing that I saw this link but I didn't understand something.

http://www.cprogramming.com/tutorial/3d/rotationMatrices.html

推荐答案

我相信您正在尝试旋转节点(rotation 属性).

I believe that your are trying to rotate nodes (rotation property).

来自文档:

四分量旋转矢量在前三个分量中指定旋转轴的方向，在第四个分量中指定旋转角度(以弧度为单位).

The four-component rotation vector specifies the direction of the rotation axis in the first three components and the angle of rotation (in radians) in the fourth.

您可能会发现使用 eulerAngles 更容易:

You might find it easier to use eulerAngles :

节点的方向，表示为俯仰角、偏航角和横滚角，均以弧度为单位

The node’s orientation, expressed as pitch, yaw, and roll angles, each in radians

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