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I am trying to create a smooth animation loop with a Euler Wiggle node and I have been unable to figure it out.

My goal is to provide an increasing integer value to the Evolution property and then when it hits a max, say 100, it would decrease to 0. This would allow me to create a longer animation with the Video Sequence Editor and save me having to render an excessive amount of frames.

I cannot use a simple duplicate sequence in reverse to emulate the effect as there is a background element that maintains the same direction of movement.

Euler Wiggle Node

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There are two ways to do this, the mathematical way, and the simple method of using an linear mirror interpolation which I will describe here:

Node Tree 1

In that case, it will start at zero, start increasing till it reach 100 at half the duration, and then start decreasing till it reach zero again at the full duration.

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  • $\begingroup$ For future readers: Mirror Interpolation was missing from my menu and I found it using the search function. $\endgroup$ Commented Oct 14, 2017 at 12:10

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