如何改变cocos3d中的旋转顺序
我是cocos3d的新手，现在遇到一个问题。
在cocos3d中，我想旋转一个节点。我得到了x轴、y轴、z轴的角度，然后我使用属性：rotation来旋转，像这样：
theNodeToBeRotated.rotation = cc3v(x,y,z);
但是我发现它没有按照我的预期旋转，因为文档说旋转顺序是yxz。
我想将顺序更改为 xyz。谁能告诉我怎么做吗？
I'm a fresh in cocos3d, now I have a problem.
In cocos3d, I want to rotate a node. I got the angles in x axis, y axis, z axis, then I used the property:rotation to rotate, like this:
theNodeToBeRotated.rotation = cc3v(x,y,z);
But I found out it didn't rotate as I expected, because the document said the rotate order is y-x-z.
I want to change the order to x-y-z. Can anyone let me know how?
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您可能需要进一步澄清以下内容：“它没有按我预期的方式旋转”
OpenGL ES（因此，cocos3D）使用 y 轴向上，因此旋转顺序仍然是 xyz。如果您要导入模型，则需要考虑 3D 编辑器的坐标系并进行相应调整。
如果您不习惯使用三维表示，从 2D 到 3D 的跨越可能是一个重大障碍。在 Cocos3D 中：
设想这三条轴，或者更好的是，一根绳子。
如果您绕 x 轴旋转，请从左到右水平握住绳子：物体会朝您旋转或远离您旋转。
如果你绕 y 轴旋转，从脚到头垂直握住绳子：物体会像旋转门一样旋转。
如果您绕 z 轴旋转，请将一端靠近胸部，另一端尽可能远离：物体会像钟面一样旋转。
-- 更新
我强烈不建议更改旋转顺序，因为使用 YXZ 是 OpenGL 标准。如果您想修改它，请查看 CC3GLMatrixMath 并查找 kmMat4RotationYXZ - 还有 kmMat4RotationZYX。如果您想要 XYZ，则需要构建自己的旋转矩阵并在 CC3GLMatrix 和 CC3GLMatrixMath 中进行相应更新。
作为参考，您还有 OpenGL 红皮书 - 它应该给你一些建议。
You might need to clarify further regarding the following: "it didn't rotate as I expected"
OpenGL ES (and ergo, cocos3D) uses the y-axis as up so the rotation order is still x-y-z. If you are importing a model, you then need to take into account the 3D editor's co-ordinate system and adapt accordingly.
If you are not used to working with three-dimensional representations, the leap from 2D to 3D can be a significant hurdle. Within Cocos3D:
Envisage those three lines of axis, or even better, a piece of string.
If you are rotating around the x-axis, hold the string horizontally from left to right: the object would rotating towards you or away from you.
If you are rotating around the y-axis, hold the string vertically from feet to head: the object would rotate as if like a revolving door.
If you are rotating around the z-axis, hold one end close to your chest and the other end as far away as possible: the object would rotate similar to a clock face.
-- Update
I heavily wouldn't recommend changing the rotation order as it is the OpenGL standard to use Y-X-Z. If you wish to modify it, take a look at CC3GLMatrixMath and look for kmMat4RotationYXZ - there is also kmMat4RotationZYX. If you want to have X-Y-Z, you would need to construct your own rotation matrix and update accordingly in CC3GLMatrix and CC3GLMatrixMath.
As a reference, you also have the OpenGL Red book - it should have some suggestions for you.