Staggering
delayed sequential offset - WIP
Staggering animation is one of the most common technique used in Motion Design. It's good to know this technique because you need not manually copy and paste keyframes from one layer to another and offset the timing. Instead you can animate one element, and make all the other layers reference that animation with an offset timing.
Generally, when we want to stagger or offset animations in time for a series of layers, we can make use of the layers'
index number and the valueAtTime property.
// Copying animation of a layer, and start it at inPoint of layer
thisComp.layer(index+1).transform.position.valueAtTime(time-inPoint)
// Using delay
offset = 1;
thisComp.layer(index+1).transform.position.valueAtTime(time-offset)
1
2
tgt = thisComp.layer("main").transform.position // target layer & prop
delay = 5; //number of frames to delay
delay*= thisComp.frameDuration*(index - 1); // convert to time
tgt.valueAtTime(time - delay)
// alternatively you can do it this instead
delay = framesToTime(5); //convert to time method 2
thisComp.layer(1).position.valueAtTime(time - delay)
delay = 5; //number of frames to delay
d = delay*thisComp.frameDuration;
thisComp.layer(index - 1).position.valueAtTime(time - d)
It is always best practice to use absolute index referencing, because you do not run the risk of your animation being affected if I were to add a new layer to the composition causing all the layers' index number. The simple way to absolute reference is to:
- 1.Create a Null layer or use your main animated layer, usually named "start"
- 2.Make sure the layers you want to offset is underneath this "start" layer
- 3.Get the absolute index number by subtracting the Start layer index from the layer index number
- 4.Now you can use that value to calculate the delay offset
var startLayer = thisComp.layer("startLayer");
var myIndex = index- startLayer.index;
delay = 5; //number of frames to delay
d = delay*thisComp.frameDuration*(myIndex - 1);
thisComp.layer(1).position.valueAtTime(time - d)
strt = 0; //start time of template motion
end = 4.0; //end time of template motion
t = thisComp.layer("template");
offset = (t.effect("offset")("Slider")/100)*(index -1);
travel = linear(t.effect("travel")("Slider")/100,strt,end);
if (travel <= offset){
vect = t.position.velocityAtTime(0);
}else{
vect = t.position.velocityAtTime(travel - offset);
}
lookAt(position, position + vect)
strt = 0; //start time of template motion
end = 4.0; //end time of template motion
t = thisComp.layer("template");
offset = (t.effect("offset")("Slider")/100)*(index -1);
travel = linear(t.effect("travel")("Slider")/100,strt,end);
u = t.toWorldVec([1,0,0],travel - offset);
v = t.toWorldVec([0,1,0],travel - offset);
w = t.toWorldVec([0,0,1],travel - offset);
sinb = clamp(w[0],-1,1);
b = Math.asin(sinb/thisComp.pixelAspect);
cosb = Math.cos(b);
if (Math.abs(cosb) > .0005){
c = -Math.atan2(v[0],u[0]);
a = -Math.atan2(w[1],w[2]);
}else{
a = Math.atan2(u[1],v[1]);
c = 0;
}
[radiansToDegrees(a),radiansToDegrees(b),radiansToDegrees(c)]
tgt = thisComp.layer("control");
// d = length(L.transform.position, transform.position);
d = length(thisLayer.toWorld(transform.anchorPoint), tgt.toWorld(tgt.transform.anchorPoint));
delay = thisComp.layer("control").effect("maxDelay")("Slider");
offset = linear(d,0,2000,0,delay);
time-offset;
nsc
OF
// VARIABLES + SETUP
target = thisComp.layer("master").transform.scale;
maxDist = 1000;
maxDelay = 1;
dst = length(transform.position,[thisComp.width/2,thisComp.height/2]);
delay = linear(dst,0,maxDist,0,maxDelay);
// EXECUTION
target.valueAtTime(time-delay)
//apply to scale
target = thisComp.layer("fade");
fade = target.effect("scale")(1);
delay = target.effect("delay")(1)*thisComp.frameDuration;
dist = length(thisLayer.toWorld(thisLayer.anchorPoint), target.toWorld(target.anchorPoint));
seed = seedRandom(15, true)
randomRange = target.effect("random")("Slider");
rand = (random(-randomRange, randomRange))*thisComp.frameDuration;
offset = delay/dist;
s = fade.valueAtTime(time - offset - rand);
[s,s]
nsc
//Create a null named "EFFECTOR"
//Add 2 Slider Control Effects renamed to "maxDist" and "delay"
// EXECUTE
target = thisComp.layer("EFFECTOR").transform
maxDist = thisComp.layer("EFFECTOR").effect("maxDist")("Slider");
maxDelay = thisComp.layer("EFFECTOR").effect("delay")("Slider");
dst = length(transform.position, target.position);
delay = linear(dst, 0, maxDist, 0, maxDelay);
// EXECUTION
target.opacity.valueAtTime(time - delay)
This allow you to row by row staggering by separating the dimensions for measuring distances.
//user variables
tgt = thisComp.layer("control");
delayX = 1;
delayY = 2;
distanceX = 1920;
distanceY = 400;
// logic
d1 = length(tgt.toWorld(tgt.transform.anchorPoint)[0],transform.position[0])
d2 = length(tgt.toWorld(tgt.transform.anchorPoint)[1],transform.position[1])
offsetx = linear(d1,0,distanceX,0,delayX);
offsety = linear(d2,0,distanceY,0,delayY);
//main
time-offsetx-offsety
Last modified 1yr ago