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3D corkscrew that i can fly a camera thru
In a nutshell I am flying down into the top of a swirly chocolate shake (still image)… In the shake there is a ‘party’ going on…
I want to creat a 3D spiral that i can travel down (sort of like thru a tunnel but i’d like a clear ledge where products can sit) along the way there will be products that I will have auto orient toward the camera. The main animation will come from the camera but I don’t know how to create the spiral in good enough 3D to pull off the look.
I am very well versed in AE and would like to hear anyone/everyones advice on how to make something really cool.
I know this can be done in Maya but I don’t have the time or budget to go that route…
I am an expression idiot so please treat me as such…
I found this expression but have no idea how to apply it… Does it go in the position of a single layer somehow??
I tried and just get errors 🙁diameter = 200;//pixels
zBegin = -1000;//pixels
zEnd = 1000;//pixels
spinRate = 2;//Adjust this until you like it
beginTime = 0;//seconds
endTime = 5;//seconds
//–
x = diamter * Math.sin(time * spinRate);
y = diamter * Math.cos(time* spinRate);
z = linear(time, beginTime, endTime, zBegin, zEnd);
[x, y, z] -
1 Reply
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The only error I get is because he misspelled diameter in lines 8 and 9 or the expression. Change lines a 8 and 9 to this, and it works;
x = diameter * Math.sin(time * spinRate);
y = diameter * Math.cos(time* spinRate);You’d want that expression on the camera’s position.
This is a little hard to control, as it move a distance in z then just spirals in the same spot.
Colin wrote an expression for a spiral in x and y, I hacked it for z. Put what you want to spiral toward at the “centerPoint”, x and y position, but adjust the z as needed. The camera will spiral along that center point. Here’s Colin’s (hacked) expression:
//begin expression
//Expression by Colin Braley then hacked by yikesmikes
//Modify these first few variables to change the effectcenterPoint = [360 , 270];
beginRadius = 25; //pixels
beginZ = 0;
endZ = 800; // how far you want the spiral to move over time
endRadius = 100; //pixels
startTime = 0; //seconds
endTime = 3; //seconds
howManyRings = 3;
clockwise = false;
//if you want the spiral to spin the other way make clockwise = false;//–
t = time;
if( time < startTime ) t = startTime; if( time > endTime )
t = endTime;
radius = linear( time , startTime , endTime , beginRadius , endRadius );
theta = linear( time , startTime , endTime , 0 , (2 * Math.PI ) * howManyRings );
if( ! clockwise )
theta *= -1;
x = radius * Math.cos( theta );
y = radius * Math.sin( theta );
z = linear ( time, startTime, endTime, beginZ, endZ);
//–
[x , y, z] + centerPoint
//end expressionIt looks a little complicated but gives you near complete control, start and stop time, distance traveled, number of ring, etc.
Most people turn the auto-orient off, Select the camera>Right click>Transform>Auto Orient>Off.
Not to overwhelm you, but many people use Nulls to help control the camera. Here is a link to two great posts on doing that;
https://forums.creativecow.net/readpost/2/922144
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