KeyReducer

The KeyReducer is an essential tool when editing Motion Capture tracks. MoCap systems always save one keyframe per frame of animation. This will put gray hairs on any animator’s head because it is impossible to tell what is happening where in the animation – the entire timeline is crammed with keyframes!

KeyReducer 是编辑动作捕捉轨道时必不可少的工具。MoCap 系统总是为每帧动画保存一个关键帧。这将把任何动画师的头上的灰色毛发，因为它是不可能告诉发生在哪里的动画-整个时间轴塞满了关键帧！

Keyframes from a Motion Capture recording before (top) and after (bottom) applying the KeyReducer. 应用 KeyReducer 之前(顶部)和之后(底部)的动作捕获记录的关键帧

What the KeyReducer does is thin the thicket of keyframes. To do so it uses an algorithm adapted to the algorithm of the RM Curves (see Reset RM Curve) that in essence also create simplified F-Curves for control.

的作用是削弱错综复杂的关键帧。为了做到这一点，它使用了一种适合于 RM 曲线算法的算法(参见重置 RM 曲线) ，实质上也创建了简化的 f 曲线用于控制。

And it does this intelligently! It differentiates between keyframes that are relevant to the animation and those that are used as fillers.

而且它做得很聪明！它区分与动画相关的关键帧和用作填充的关键帧。

Reduction

减少

Select the Tracks (Dope Sheet mode) or F-Curves (F-Curve mode) whose keys should be reduced before activating the KeyReducer. As soon as the mouse button is released the Keys will be removed and the animation can be played.

选择轨道(涂料表模式)或 f 曲线(f 曲线模式) ，它们的按键在激活 KeyReducer 之前应该减少。一旦鼠标按钮被释放的关键将被删除和动画可以播放。

The following sliders can be used to adjust reduction:

下列滑块可用于调整压下量:

Reduction Fourier: This is the old, somewhat aggressive method. Higher values will result an increasing decimation of the curve. 还原傅里叶变换: 这是一种古老的、有点咄咄逼人的方法。较高的数值会导致曲线的逐渐减少

Reduction Inflection: Curve turning points will be added that will maintain their integrity even at higher Reduction Inflection values. This means that the curve will also remain largely intact. 减少拐点: 曲线转折点将增加，将保持其完整性，即使在较高的减少拐点值。这意味着，曲线基本上仍将保持不变

As soon as one of the sliders is released the Reduction value will return to 0% (also after a value has been entered manually and the Enter-key pressed). If you are still not satisfied with the result you can either define another value or undo the reduction via the Timeline’s Edit menu. 一旦其中一个滑块被释放，Reduction 值将返回到0% (也是在手动输入一个值并按下 enter 键之后)。如果您仍然不满意的结果，您可以定义另一个值或撤消削减通过时间轴的编辑菜单 Editing tracks using the KeyReducer is especially useful in conjunction with 使用 KeyReducer 编辑音轨特别有用Cappuccino 卡布奇诺 functions since these functions generally create a great number of keyframes. 函数，因为这些函数通常创建大量的关键帧

The KeyReducer should be used carefully when editing motion capture files that were recorded using certain motion capture systems. Editing all tracks at once will probably never achieve the desired end-result. In fact, a bone / joints skeleton will practically be decimated because the KeyReducer will ignore such settings as the spacing between bones. The KeyReducer edits each object independently. The KeyReducer should therefore be applied to individual tracks, one at a time!

在编辑使用某些动作捕捉系统记录的动作捕捉文件时，应该谨慎使用 KeyReducer。一次性编辑所有曲目可能永远不会达到预期的最终结果。事实上，一个骨骼/关节骨骼几乎会被毁坏，因为 KeyReducer 会忽略诸如骨骼间距之类的设置。KeyReducer 独立编辑每个对象。因此 KeyReducer 应该被应用到单独的轨道上，一次一个！