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Spirograph in 3D

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Don JohnsonSpirograph in 3D
by on Jun 30, 2014 at 9:12:43 am

Recently found this blog thread, looks great although I am unsure how to apply the expression?

It animates a spirograph in 3d space using the write-on effect, but I can not make sense of the expression and what nulls are required etc


http://qubahq.com/2005/08/sine-sphere/

http://aeportal.blogspot.com.au/2010/03/few-spirographs-in-after-effects.ht...


Help greatly appreciated!


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Brian CharlesRe: Spirograph in 3D
by on Jun 30, 2014 at 6:08:56 pm
Last Edited By Brian Charles on Jun 30, 2014 at 6:42:53 pm

Since Write-On uses 2D coordinates, I'm pretty sure that the expression needs to be applied to a particle system with 3D coordinates to make a 3D animation.

In the linked file I created a null named Null: Center as in the script, then I applied the script to the Null's position property, finally I linked Write-On's brush position for a 2D Spirograph and Particular's positions for a 3D one.

7695_spiro.aep.zip

The only other way might be to generate the animation in 2D and then wrap it around a sphere using CC Sphere, really pseudo-3D.



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Don JohnsonRe: Spirograph in 3D
by on Jul 1, 2014 at 12:24:54 am

Thanks Brian,

Unfortunately I am running CS 5.5 so am unable to open your example. I have recreated my own with the position of Trapcode Particular parented to a null, with the expression copied into the nulls position. The look I am getting is not as per the example, it still appears to operate only in a 2D space.

File attached

7697_spirographattempt.aep.zip


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Brian CharlesRe: Spirograph in 3D
by on Jul 1, 2014 at 1:00:47 am

I just looked at yours and its is 3D, add a camera and rotate it.

See this:


7700_spirocopycs5.5.aep.zip



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Don JohnsonRe: Spirograph in 3D
by on Jul 1, 2014 at 1:29:11 am

Ah! Thankyou!


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