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Just the Tip: Making a Twister / Tornado in After Effects using CC Particle World

Here's a quick tutorial showing how you can create a particle Twister in Adobe After Effects, using just the native plugins, mainly Cycore's CC Particle World with a bit of CC Vector Blur too.



I use a set of expressions from a previous tutorial, Linking CC Particle World to a 3D Null in After Effects:





Expressions used for the 3D NULL link:

Position X:

x=thisComp.layer("Null 1").transform.position[0]-thisComp.width/2; x/thisComp.width;

Position Y:

y=thisComp.layer("Null 1").transform.position[1]-thisComp.height/2; y/thisComp.width;

Position Z:

z=thisComp.layer("Null 1").transform.position[2]; z/thisComp.width;

Adding a wiggle in only two directions / axis:

X = wiggle(1,50)[0]; Y=value[1]; Z=wiggle(1,50)[2]; [X,Y,Z]

Project download: http://bit.ly/38nBaBB


Posted by: Graham Quince on Feb 15, 2020 at 10:47:42 am after effects, expressions, particles, cc particle world

Just the tip: White balance, scale and focus reference card for easy compositing

Here’s a short tutorial and giveaway of a digital (and physical) asset I use to help me composite greenscreened actors and CGI elements into a physical scene. This tutorial covers using the reference cards in Adobe After Effects, Video Copilot Element 3D and the included Lumetri Color, Camera Lens Blur and Match Grain effects.

I demonstrate how to composite the free Star Wars BB-8 model from VC’s Star Pack into a regular shot.



Download: http://bit.ly/2RYb1V0

Video Copilot Star Pack: https://www.videocopilot.net/blog/2016/05/free-star-wars-model-pack/

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Expression used to roll BB-8:

diameter=100;

pi=Math.PI;

circumference=diameter*pi;

rot=360/circumference;

Xpos=thisComp.layer(“Element NULL”).transform.position[0]*-1;
scalePercent=thisComp.layer(“Element NULL”).transform.scale[0]/100;
rot*Xpos/scalePercent



Just the tip: Free tracking images for tablets and phones for easy screen replacement

Here's a giveaway for anyone interested in trying to do a screen replacement for their iPad, iPhone, Tablet or phone.

After a lot of trial and error, I've created these two images which makes it much easier to track your screen using After Effects and Boris Mocha. The video has a brief tutorial showing how to use the included Boris FX Mocha plugin for After Effects CC.




Official Boris Mocha tutorial:





Downloads:

iPad / Tablet: http://bit.ly/2JiTylb
iPhone / Smart phone: http://bit.ly/35Z9Qcx
(Files are hosted on Dropbox, and shouldn't require signing up to view and download)


Posted by: Graham Quince on Dec 21, 2019 at 11:35:31 am after effects, tracking, boris

Just the Tip (a new set of mini-tutorials for After Effects) - Rolling a ball using Expressions

I'm currently prepping a much larger series of tutorials, but to take a break from those, I've also be creating a series of short tutorials for the things I go back to again and again - but not so frequently that I have them memorised. I find myself searching the internet (and the Cow of course) for these tips, but then often have to wade through a 30 minute tutorial - just to find that one thing... that one trick. Well, these mini-tuts are built for that purpose. I hope you find them useful.

This tutorial uses an expression to calculate how much a circle / image should rotate based on its horizontal position. I've then adapted the expression slightly to help you roll 3D objects too.




--------------------------------------------------------------------------------------
Expressions:

2D Layer
diameter=width;
pi=Math.PI;
circumference=diameter*pi;
rot=360/circumference;
Xpos=thisLayer.transform.position[0];
scalePercent=thisLayer.transform.scale[0]/100;
rot*Xpos/scalePercent


CC Sphere in one dimension:
diameter=effect("CC Sphere")("Radius")
pi=Math.PI;
circumference=diameter*pi;
rot=360/circumference;
Xpos=thisLayer.transform.position[0];
scalePercent=thisLayer.transform.scale[0]/100;
rot*Xpos/scalePercent


CC Sphere coming towards camera:
diameter=effect("CC Sphere")("Radius")
pi=Math.PI;
circumference=diameter*pi;
rot=360/circumference;
Xpos=thisLayer.transform.position[0];
scalePercent=thisLayer.transform.scale[0]/100;
rot*Xpos/scalePercent*-1

Project file: http://bit.ly/2ZtSDn6

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Twitter: https://twitter.com/ShiveringC


Posted by: Graham Quince on Oct 12, 2019 at 3:39:27 pm after effects, expressions, rolling, roll, rotate

After Effects tutorial: Converting a 2D effect to 3D (using a bit of Maths) to make a Black Hole

Long title, but it about covers it. In this tutorial, I'm demonstrating how to get the look of an Interstellar Movie-type Black Hole using the Bulge effect, 3D layers, adjustment layers and how to use expressions to compensate for the fact you can't use Bulge in 3D space.

I've included the project file here:
http://www.mediafire.com/file/vpycnod1bn97la5/Black%20Hole%20Tutorial.aep

Other tutorials mentioned:
CC Particle Galaxy tutorial
https://library.creativecow.net/quince_graham/adobe_after_effects_particle_...

Cinema 4D Black Hole
https://shiveringcactus.wordpress.com/2015/07/19/interstellars-black-hole-r...


Posted by: Graham Quince on May 26, 2018 at 4:00:59 pm after effects, space, expressions



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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