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Create Slideshow with Panzoom Effect in Adobe After Effects
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// | |
// Copyright 2017 Johannes Müller <straightshoota@gmail.com> | |
// | |
// Licensed under the Apache License, Version 2.0 (the "License"); | |
// you may not use this file except in compliance with the License. | |
// You may obtain a copy of the License at | |
// | |
// http://www.apache.org/licenses/LICENSE-2.0 | |
// | |
// Unless required by applicable law or agreed to in writing, software | |
// distributed under the License is distributed on an "AS IS" BASIS, | |
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
// See the License for the specific language governing permissions and | |
// limitations under the License. | |
// | |
// | |
// This is a scipt for After Effects. Run it to create a composition containing | |
// a slideshow of images you select via a file chooser dialog. | |
// | |
// | |
// time span, a slide should be visible | |
var SLIDE_DURATION = 3; // in seconds | |
var TRANSITION_DURATION = 0.5; // in seconds | |
var TOTAL_DURATION = SLIDE_DURATION + TRANSITION_DURATION; | |
writeConsole("SLIDE_DURATION=" + SLIDE_DURATION); | |
writeConsole("TRANISTION_DURATION=" + TRANSITION_DURATION); | |
function createPanZoom(comp,layer) { | |
var rulesOfThirdsPoints = [[1/3,1/3],[2/3,1/3],[1/3,2/3],[2/3,2/3]]; // points of interest in image | |
var zoomModes = ["IN","OUT"]; | |
var rdIdx = Math.floor(Math.random() * rulesOfThirdsPoints.length); | |
var f = rulesOfThirdsPoints[rdIdx]; | |
var deltaZoomPoint = [f[0] * comp.width, f[1] * comp.height] - [comp.width/2,comp.height/2]; | |
var rdIdx = Math.floor(Math.random() * zoomModes.length); | |
var zoomMode = zoomModes[rdIdx]; | |
var keyTimes = [0, TOTAL_DURATION]; | |
var keyValues; | |
switch(zoomMode) { | |
case "IN": | |
keyValues = [[100,100],[107,107]]; | |
break; | |
case "OUT": | |
keyValues = [[109,109],[100,100]]; | |
break; | |
default: | |
break; | |
} | |
var nullL = comp.layers.addNull(); | |
layer.scale.expression = | |
"sx = 100 * thisComp.width / width; \r" + | |
"sy = 100 * thisComp.height / height; \r" + | |
"s = Math.max(sx,sy); \r" + | |
"[s,s];"; | |
layer.parent = nullL; | |
nullL.anchorPoint.setValue(nullL.anchorPoint.value + deltaZoomPoint); | |
nullL.position.setValue(nullL.position.value + deltaZoomPoint); | |
nullL.scale.setValuesAtTimes(keyTimes,keyValues); | |
} | |
function isInArray(array, element) { | |
var found = false; | |
for (var i = 0; !found && i < array.length; i++) { | |
if (array[i] == element) found = true; | |
} | |
return found; | |
} | |
function isImageFile(fileName) { | |
var ext = fileName.split(".").pop().toUpperCase(); | |
var imageFormats = ["BMP", "CIN", "IIF", "EXR", "GIF", "JPG", "JPEG", "PCX", "PCT", "PNG", "PSD", "PXR", "HDR", "SGI", "TIF", "TGA"]; | |
return isInArray(imageFormats, ext); | |
} | |
function run() { | |
var imagesFolder = defaultFolder.selectDlg("Select images folder:"); | |
if (imagesFolder) { | |
defaultFolder = imagesFolder; | |
app.beginUndoGroup("PanZoom.jsx"); | |
var assetFolder = app.project.items.addFolder("PanZoom Assets - " + File.decode(imagesFolder.name)); | |
var comps = []; | |
var files = imagesFolder.getFiles(); | |
clearOutput(); | |
for (var i = 0; i < files.length; i++) { | |
if (isImageFile(files[i].fsName)) { | |
clearOutput(); | |
var io = new ImportOptions(); | |
var item; | |
try | |
{ | |
io.file = files[i]; | |
if (io.canImportAs(ImportAsType.FOOTAGE)) { | |
io.importAs = ImportAsType.FOOTAGE; | |
} | |
item = app.project.importFile(io); | |
} catch(e) { | |
item = app.project.importPlaceholder(files[i].name,1920,1080,25,3600); | |
} | |
if (item) { | |
item.selected = false; | |
writeLn((i+1) + "/" + files.length + ": " + item.name); | |
var comp = app.project.items.addComp(item.name,item.width,item.height,item.pixelAspect,TOTAL_DURATION,25); | |
var layer = comp.layers.add(item); | |
createPanZoom(comp,layer); | |
item.parentFolder = assetFolder; | |
comp.parentFolder = assetFolder; | |
comps.push(comp); | |
} | |
} | |
} | |
// create final comp | |
if (comps.length > 0) | |
{ | |
var finalComp = app.project.items.addComp("Final - " + File.decode(imagesFolder.name),1920,1080,1,comps.length * SLIDE_DURATION,25), | |
next_slide_animation_index = 5, | |
slide_animation_distance = 6 | |
for (var i = 0; i < comps.length; i++) { | |
writeLn("Final Comp, Layer: " + (i+1) + "/" + comps.length); | |
var layer = finalComp.layers.add(comps[i]); | |
// scale to cover composition size | |
layer.scale.expression = | |
"sx = 100 * thisComp.width / width; \r" + | |
"sy = 100 * thisComp.height / height; \r" + | |
"s = Math.max(sx,sy); \r" + | |
"[s,s];"; | |
var startTime = i * SLIDE_DURATION - TRANSITION_DURATION; | |
layer.startTime = startTime; | |
// add a white effect every six slides for some | |
if(i == next_slide_animation_index){ | |
var keyTimes = [startTime, startTime + TRANSITION_DURATION]; | |
var keyValues = [100,0]; | |
layer.Effects.addProperty("Linear Wipe"); | |
var wipe = layer.Effects.property("Linear Wipe"); | |
wipe.property("Wipe Angle").setValue(0); | |
wipe.property("Transition Completion").setValuesAtTimes(keyTimes, keyValues); | |
//wipe.property("Feather").setValue(80); | |
next_slide_animation_index = i + slide_animation_distance | |
} | |
} | |
finalComp.workAreaDuration = Math.max(finalComp.frameDuration, startTime); | |
finalComp.selected = true; | |
} | |
if (assetFolder.numItems < 1) | |
assetFolder.remove(); | |
writeLn("Done !"); | |
app.endUndoGroup(); | |
} | |
} | |
var defaultFolder; | |
if (defaultFolder == null) { | |
defaultFolder = Folder.current; | |
} | |
run(); |
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