To and fro, or back and forth using sine

Question

I want to make a to and fro motion on x using a sinusoidal equation. I saw it on a tutorial recently but i can't find it again.

Something like the ping pong node https://youtu.be/9y0HHYD7Lxo — Rick T, Jul 16 '23 at 16:55
using python? https://blender.stackexchange.com/questions/270888/draw-a-sine-wave-from-a-revolving-unit-circle-in-blender — Harry McKenzie, Jul 17 '23 at 10:09

score 3 · Answer 1 · answered Jul 16 '23 at 23:41

Add a location keyframe for your object anywhere by hitting I in object mode and choosing Location.

In the Graph Editor select the keyframe for the X value, then go to the properties panel (hit N if you don't see it).

In the Modifiers tab choose Add Modifier > Built-In Function

score -1 · Answer 2 · edited Jul 17 '23 at 18:24

-1

Click the object's X Location to edit it, and type in #sin(frame/20).

This will create a driver with a scripted expression sin(frame/20) which sets the X location to the SIN of the current frame value divided by 20. Making the cube move on X between -1 and 1 every ~63 frames.

edited Jul 17 '23 at 18:24

L0Lock

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answered Jul 16 '23 at 17:16

Nanyak Famwang

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Hello, could you please tell a bit more? – moonboots Jul 17 '23 at 13:46
A simple back and forth. Or up-down continuous motion. – Nanyak Famwang Jul 17 '23 at 18:13

To and fro, or back and forth using sine

2 Answers2