Object Axis

对象轴

Gimballing Rotation

万向节旋转

This special rotation band mode helps you avoid gimbal lock (which is mainly of interest to animators). Instead of going into depth with complex mathematical formulas and explanations we will simply demonstrate how this mode can make creating rotational animations easier.

这种特殊的旋转带模式可以帮助您避免万向节锁定(这主要是感兴趣的动画)。与其深入探讨复杂的数学公式和解释，我们将简单地演示这种模式如何使创建旋转动画更容易。

A simple example problem: Create a Cone and activate the Rotate tool. In the Coord. tab, set R. P to 80°.

一个简单的例子问题: 创建一个圆锥并激活旋转工具。在 Coord。标签，设置 r p 为80 ° 。

Your scene will look as follows:

你的场景看起来如下:

Everything looks completely normal. All three bands lie perpendicular to each other. Everything is fine. You can still rotate the object in any direction.

一切看起来完全正常。这三条带子彼此垂直。一切都很好。你仍然可以向任何方向旋转物体。

But things only look good on the surface. If you want to animate the Cone (around its long axis), things can get difficult. If you were to create several keyframes, first a rotation key and down the line a second one (after having dragged the green rotation band), the Cone would tumble unpredictably around all axes.

但事情只是表面上看起来不错。如果你想要动画圆锥(围绕它的长轴) ，事情可能会变得很困难。如果要创建几个关键帧，首先是一个旋转键，然后是第二个关键帧(在拖动了绿色旋转带之后) ，这个圆锥体会不可预测地在所有轴周围翻滚。

You will see why this happens when you enable the Gimballing Rotation option. The rotation bands now look like the ones at the right of the image above. The green and blue bands almost lie over one another. You can actually see that a correct rotation around the Cone’s long axis will be difficult at best (a correspondingly oriented band doesn’t exist). A classic example of gimbal lock. This is what we want to prevent from happening and this is what the Gimballing Rotation option helps you do.

您将看到为什么这种情况发生时，您启用框架旋转选项。旋转带现在看起来像上图右边的那些。绿色和蓝色的条纹几乎相互覆盖。实际上，你可以看到一个正确的旋转锥的长轴将是困难的最好的(一个相应的导向带不存在)。万向节锁的经典例子。这是什么，我们要防止发生，这是什么框架旋转选项帮助你做。

Note also the rotation Order which lets you select a different axis order (PRIOR to animating). One of the available options should fit your needs.

还要注意旋转顺序，它允许您选择不同的轴顺序(优先于动画)。其中一个可用的选择应该适合你的需要。

Of course you can still use the traditional method of circumventing gimbal lock by animating a parent Null Object.

当然，您仍然可以使用传统的方法，规避万向节锁的父动画空对象。

In the Customize Commands… Manager you will find the Gimballing Rotation command with which you can toggle this option.

在自定义命令... 管理器中，你会找到框架旋转命令，你可以切换这个选项。

Note also that the gimbal rotation bands will be disabled when you switch to the world coordinate system.

还要注意的是，当你切换到世界坐标系时，万向节旋转带将被禁用。

Per-Object Manipulation

每个对象的操作

If multiple objects are selected, each will rotate around its own object axis if this function is enabled. If disabled, all will rotate around the common selection axis.

如果选择了多个对象，则如果启用此函数，每个对象将围绕自己的对象轴旋转。如果禁用，所有将围绕公共选择轴旋转。

This function’s options (when enabled) work as follows when in Object or Modeling mode:

在对象或建模模式下，此函数的选项(启用时)工作如下:

• Move 走开: Each object will be moved locally to their Parant objects (i.e. the bottom most object within a hierarchy will move the fastest). : 每个对象将局部地移动到它们的 Parant 对象(即层次结构中最底层的对象移动最快)
• Scale 比例: Objects will be scaled locally, i.e., each object will be scaled individually at its location. : 对象将在本地进行缩放，也就是说，每个对象将在其位置单独进行缩放
• Rotation 旋转: If : 如Gimballing Rotation 万向节旋转 is enabled and you drag a rotation band, all selected objects will rotate around their own rotation band. If 当你拖动一个旋转带时，所有被选中的物体都会围绕它们自己的旋转带旋转。如果Gimballing Rotation 万向节旋转 is disabled, all selected objects will rotate in the direction of the selected rotation band. 禁用，所有选定的对象将旋转在选定的旋转带的方向