var xOffset =350;var prevLayerX =thisComp.layer(index -1).transform.position[0];[xOffset + prevLayerX, value[1]];
Y-Axis
var yOffset =350;var prevLayerY =thisComp.layer(index -1).transform.position[1];[value[0], yOffset + prevLayerY];
Changing anchor point
var s =sourceRectAtTime();// Top left ↖[s.left,s.top] // // Top center ↑[s.left,s.top] + [s.width /2,0];// Top right ↗[s.left,s.top] + [s.width,0];// Center left ← [s.left,s.top] + [0,s.height /2];// Center[s.left,s.top] + [s.width,s.height] /2;// Center right → [s.left,s.top] + [s.width,s.height /2]// Bottom left ↙[s.left,s.top] + [0,s.height]// Bottom center ↓ [s.left,s.top] + [s.width /2,s.height]//Bottom right ↘[s.left,s.top] + [s.width,s.height]
Random positioning XYZ
// Seed for randomizationvar seed =20;// Define the minimum values for randomizationvar minX =25;var minY =25;var minZ =-1900; // Define the maximum values for randomizationvar maxX =thisComp.width;var maxY =thisComp.height;var maxZ =50;// Set the random seedseedRandom(seed,true);// Generate random values within the defined rangesvar randomX =random(minX, maxX);var randomY =random(minY, maxY);var randomZ =random(minZ, maxZ);// Create an array with the random values[randomX, randomY, randomZ];
Alternatively, you can use array variables for a preferred and shorter expression.
// Seed for randomizationvar seed =20;// Define the minimum and maximum values for randomizationvar minValues = [25,25,-1900]; var maxValues = [thisComp.width,thisComp.height,50];// Set the random seedseedRandom(seed,true);// Create an array with the random valuesrandom(minValues,maxValues)
Scale
Maintain Scale When Parented
var scaleFactor = [];var parentScale =parent.transform.scale.value;for (var i =0; i <parentScale.length; i++) { scaleFactor[i] = (value[i] *100) / parentScale[i];}scaleFactor;
target =thisComp.layer("Null 1"); // set this to the layer to aim atp = position -target.position;radiansToDegrees( Math.atan2( p[1], p[0] ) )-90
target =thisComp.layer("controls"); // set this to the layer to aim atp =thisLayer.toWorld(anchorPoint) -target.position;radiansToDegrees(Math.atan2(p[1], p[0])) -90
target = thisComp.layer("Null 1");// set this to the layer to aim at
lookAt( position, target.position )
// VARIABLES minSeg =1.5; //minimum interval (must be > 0) maxSeg =2.5; //maximum interval (must be > minSeg) // flickering duration minFlicker =.5; //must be less than minSeg maxFlicker =1; // must be less than minSeg flickerDur =random(minFlicker,maxFlicker);//initial conditions segEndTime =0; i =1; // Continuous loop: create a fixed random segment value and add to segEndTimewhile (time >= segEndTime){ i +=1; seedRandom(i,true); segEndTime = segEndTime +random(minSeg,maxSeg); } // Switch back to use the current time as input to the random seed.seedRandom(1,false); // As time > threshold, flickerif (time > segEndTime - flickerDur){random(0,100) }else{ 100 }// Source: http://www.motionscript.com/expressions-lab-ae65/swinging-light.html// Also see: http://www.motionscript.com/mastering-expressions/random-3.html
Random opacity wiggle
// control = thisComp.layer("control"); // connect to null layer with slidersfreq =1;amp =100;octave =1;amp_mult =3;wiggle(freq, amp, octave, amp_mult, time)
Random opacity wiggle with flicker
// control = thisComp.layer("control"); // connect to null layer with slidersfreq =1;amp =100;octave =1;amp_mult =3;opacity =wiggle(freq, amp, octave, amp_mult, time)// VARIABLESminSeg =control.effect("minSeg")("Slider"); //minimum interval (must be > 0) maxSeg =control.effect("maxSeg")("Slider");; //maximum interval (must be > minSeg) // flickering durationminFlicker =control.effect("minFlicker")("Slider");; //must be less than minSeg maxFlicker =control.effect("maxFlicker")("Slider");; // must be less than minSeg flickerDur =random(minFlicker, maxFlicker);//initial conditions segStartTime =0;segEndTime =0;i =1;// Continuous loop: create a fixed random segment value and add to segEndTimewhile (time >= segEndTime) { i +=1;seedRandom(i,true); segStartTime = segEndTime; segEndTime = segEndTime +random(minSeg, maxSeg);}// Switch back to use the current time as input to the random seed.seedRandom(1,false);// As time moves threshold, flickerif (time > segEndTime - flickerDur) {random(0,100)} else { opacity}
Random opacity with sin function
// Mass flickeringvel =50;seedRandom(0,true);Math.sin(time*vel+random(index))*100;
seed =29;threshold =linear(time,0,thisComp.duration,0,100); // or Connect to slider to animate switch on & offseedRandom(seed,true);randValue =random(0,90);if(randValue < threshold){100;} else0
Random opacity fade on
seed =29;seedRandom(seed,true);delay =random(0,1);t =framesToTime(20) // or usethisComp.durationlinear(time,0+delay,t+delay,0,100)
//VARIABLESfadeDuration =1;maxDelay =.5//SETUPseedRandom(index,true);delay =random(maxDelay);t = time -(inPoint + delay);// EXECUTIONlinear(t,0,fadeDuration,0,100);
Distance-based opacity fade by Animoplex
// Distance Based Opacity Fade// Original: https://helpx.adobe.com/after-effects/using/expression-examples.html// Full Tutorial: https://www.youtube.com/watch?v=I-Acdl_l9G0&t=14sstartFade =500;endFade =3000;try {C=thisComp.activeCamera.toWorld([0,0,0]);} catch(err) { w =thisComp.width *thisComp.pixelAspect; z = (w /2)/Math.tan(degreesToRadians(19.799));C= [0,0,-z];}P=toWorld(anchorPoint);d =length(C,P);linear(d, startFade, endFade,100,0)
f =2; // number of frames before and after to averagev = [0,0];for (i =-f; i <= f; i++){v +=position.velocityAtTime(i*thisComp.frameDuration + time);}v /= (f*2+1);a =Math.atan2(v[1],v[0]);radiansToDegrees(a)// turn off auto-orient
//y-rotation for 3d layersf =2; // number of frames before and after to averagev = [0,0,0];for (i =-f; i <= f; i++) { v +=position.velocityAtTime(i *thisComp.frameDuration + time);}v /= (f *2+1);a =Math.atan2(v[0], v[2]);radiansToDegrees(a)
Motion
Wiggle
// frequency by amplitude = how fast by how muchwiggle(20,30);[value[0],wiggle(20,30)[1]] // wiggle y-axis only // Smooth wiggle — freq,amp,octave,amp_multwiggle(20,30,1,2,time)// Jumpy Wiggle 1 (moves at a random FPS) Makes wiggle skip and hold rather than move fluidly.v=wiggle(5,50);if(v <50)v=0;if(v >50)v=100;v;// Jumpy Wiggle 2 (moves at a defined FPS)fps=5; //frequencyamount=50; //amplitudewiggle(fps,amount,octaves =1, amp_mult =0.5,(Math.round(time*fps))/fps);
// Inertial Bounce (moves settle into place after bouncing around a little)// // Source: https://forums.creativecow.net/docs/forums/post.php?forumid=227&postid=19145&univpostid=19145&pview=tamp =.05;freq =4.0;decay =2.0; // springynessn =0;if (numKeys >0){n =nearestKey(time).index;if (key(n).time > time){n--;}}if (n ==0){t =0;}else{t = time -key(n).time;}if (n >0){v =velocityAtTime(key(n).time -thisComp.frameDuration/10);value + v*amp*Math.sin(freq*t*2*Math.PI)/Math.exp(decay*t);}else{value;}
Constant move in either x or y axis / Random walker
WIP---choice =Math.floor(random(0,2));seedRandom(0,false);stepx =random(0,50);stepy =random(0,20);if(choice ==0){ value + [stepx,0];} elseif( choice ==1){ value +[0,stepy];}
Carousel
2D
3D
/* There needs to be two layers named 'startCard' & 'endCard' This allows rotation value to dynamically change when layers are inserted or removed. All duplicates need to be placed within these two layers*///anchor pointradius =500value+[0,0,radius]// Y rotationstartIndex=thisComp.layer("startCard").index; endIndex =thisComp.layer("endCard").index;numpt = startIndex-endIndex+1; // total number of layersmyIndex = index-startIndex;angle =360/numptmyIndex*angle+
Linking layers' rotation with opacity
Using distance & vector position
// Make sure there is a camera //OpacitystartVal =0;endVal =100;fadeAngle =180;v =toCompVec([0,0,1]); // layer position to comp position in Zd =length(toWorld(anchorPoint),thisComp.layer("Camera 1").toWorld([0,0,0]));c = v[2]/d;ease(c,Math.cos(degreesToRadians(fadeAngle)),1.0,startVal,endVal)
Dynamic-sizing text box / lower-third (depreciated, see new code)
// Create two text layers named "DATA1" & "DATA2"// Variablespad =50;xPad =15;yPad =15;seed =1// allow you to change between two text layers// Making it workif(seed==1){ src =thisComp.layer("DATA1") }else { src =thisComp.layer("DATA2") }; box =src.sourceRectAtTime(time-src.inPoint); [box.width + pad + xPad,box.height+pad +yPad];
Slider with center fade on
v =transform.position[0] // x d =length(v,thisComp.width/2);maxDist=960;ease(d,0,maxDist,100,0)
Time Remapping / Playback ✅
Random frame playback
// Source Dan Ebbertfr =12; // frame rate;numFrames =8;seedRandom(index,true);seg =Math.floor(time*fr);f =Math.floor(random(numFrames));for (i =0; i < seg; i++) f = (f +Math.floor(random(1,numFrames)))%numFrames;framesToTime(f);
// Copying animation of a layer, and start it at inPoint of layerthisComp.layer(index+1).transform.position.valueAtTime(time-inPoint)// Using delayoffset =1;thisComp.layer(index+1).transform.position.valueAtTime(time-offset)
//Create a null named "EFFECTOR" //Add 2 Slider Control Effects renamed to "maxDist" and "delay"// EXECUTEtarget =thisComp.layer("EFFECTOR").transformmaxDist =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);// EXECUTIONtarget.opacity.valueAtTime(time - delay)
This expression references the X position of the layer above in the Composition panel and adds a fixed increment, resulting in a row of evenly spaced child layers.
A series of duplicated layers with random position values
