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M G

Animating with Vibrate tag

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Hi All,

 

I have a question regarding animating with the Vibrate expression tag, please see attached file as reference.

 

What I’m trying to do: 

 

Animate a wiggling arrow as this object has been rigged (thanks to earlier help from this forum!) BUT I want to control the wiggling of the arrow, such that the arrow goes from being a straight line to a random wiggling line and back to a straight line. In a perfect world I thought the expression tag could be key framed off and on with easing in/out for a smooth transition from straight line to wiggling line. I’m not seeing a way to control it in this manner.

 

To make things more complex, I’d like to animate the arrow as a whole (Arrow_Main_nulls) via keyframe, so that it moves up/down and rotates all in the same plane (not random motion but planned keyframe positions), while being able to go from straight arrow to random wiggle arrow and back to straight arrow simultaneously several times throughout.

 

I’m hoping this makes sense.

 

From what I’ve seen I need to create a point cache, is this the best/easiest way? Or is there another way (I’m hoping there is)? Will the point cache work if I’m animating the Arrow object as a whole (is the point cache relative to wherever the object is or is it set)?

 

Any help would be greatly appreciated, this is more complicated than I anticipated…..Thanks!

Arrow_motion.c4d

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15 hours ago, M G said:

In a perfect world I thought the expression tag could be key framed off and on with easing in/out for a smooth transition from straight line to wiggling line. I’m not seeing a way to control it in this manner.

 

I would try and make an Xpresso control that gave me a User Data HUD slider, and connect that up via range mappers to the amplitude parameters of the vibrate tags. Not sure how we'd set the 3 values within the 1 parameter, but I bet @jed can fill in the blanks or suggest a better way altogether...

 

CBR

 

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Hi, As CBR already mentioned your best bet is Xpresso via User data sliders. I have made similar rig to animate an arrow flying oscillating and rotating through the air. 

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  • Topic Author
  • Thank you both for the explanation and replys. I'll give it a shot, never done this before...Hoping its not as complicated as it sounds!

    Thanks again!!!

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  • Topic Author
  • If anyone is interested, check out the file here (along with new questions). It shows my first crude attempts at using Xpresso with the vibrate tag. There might be more elegant solutions, but this is generally what I was trying to do. Thanks to all for pointing me in the right direction!

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