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Makin' a Nebula with (just) CC Particle World

In this tutorial, I use Adobe After Effect’s built-in particle simulator, CC Particle World to recreate the look of a nebula in space. Turbulent Noise is used to give the particles a texture and at the end I add the remnants of the star which went supernova to create the cloud of gas and dust.

It gave me the chance to demonstrate CC Particle World’s Resistance property – which is always a little tricky to master.



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I use a few expressions in this tutorial, you can copy them from here:

Marker linked to Particle Birth rate:
if (marker.key(1).time >= time){
effect("Birth Amount")("Slider")
} else {
0
}

CC Sphere X Rotation:
campos=thisComp.activeCamera.toWorld([0,0,0]);
planetpos=effect("CC Sphere")("Offset");
x=length([planetpos[0],planetpos[1]], [campos[0],campos[2]]);
y=campos[1]-planetpos[1];
alpha=Math.atan2(y,x)
value+radiansToDegrees(alpha) ;

CC Sphere Y Rotation:
campos=thisComp.activeCamera.toWorld([0,0,0]);
planetpos=effect("CC Sphere")("Offset");
x=campos[0]-planetpos[0];
y=planetpos[1]-campos[2];
beta=Math.atan2(y,x)
value+radiansToDegrees(beta) - 90;

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I also reference an ealier tutorial of mine, Linking CC Particle World to a 3D NULL:





CC Particle World link to a Null Expressions:
Position X:

x=thisComp.layer("Nebula NULL").transform.position[0]-thisComp.width/2;
x/thisComp.width;

Position Y:
y=thisComp.layer("Nebula NULL").transform.position[1]-thisComp.height/2;
y/thisComp.width;

Position Z:
z=thisComp.layer("Nebula NULL").transform.position[2];
z/thisComp.width;

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Download project file: https://bit.ly/2ypoo98

Video Copilot's free Color Vibrance plugin:
https://www.videocopilot.net/blog/2014/05/new-plug-in-color-vibrance/



Posted by: Graham Quince on Jun 20, 2020 at 11:09:42 am Video copilot, Orb, expressions, cc particle world



Here you'll find a bunch of tutorials for using After Effects (mainly). I have a YouTube channel, called ShiveringCactus (long story - not funny anymore) where I post the videos.
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