Crop Image file by AfterEffects Script

Report · Oct 28, 2020

//I have a question for the first time.

//The question this time is (to create an effect like a 15 puzzle game) First, I want to //divide one image into 16 pieces and output each to a file.

//The effect of the 15 puzzle game has been made with Flash, so it would be nice if the image could be divided into 16 parts.

//Please tell me just the keywords.
//The OS I'm using is Windows.

function funcINIT(){
app
//.newProject()
.project.items.addComp("SeqImgToMovie",1920, 1080, 1.0, 15, 29.97)

app
.project.items.addComp("MovieToSeqImg", 1920, 1080, 1.0, 15, 29.97)
}

var myWin = new Window("palette", "15Puzzle");
myWin.orientation = "row";

var RowSlider = myWin.add("slider");
RowSlider.minvalue = 4;
RowSlider.maxvalue = 30;
RowSlider.value = 4;

var RowNum = myWin.add("statictext", [20, 70, 130, 90], "DivideRow: " + Math.round(RowSlider.value) );

RowSlider.onChanging = function(){
if(RadioEnglish.value){
RowNum.text = "DivideRow: " + Math.round(RowSlider.value);
}
}

var ColSlider = myWin.add("slider");
ColSlider.minvalue = 4;
ColSlider.maxvalue = 30;
ColSlider.value = 4;

var ColNum = myWin.add("statictext", [20, 70, 130, 90], "DivideCol: " + Math.round(ColSlider.value) );

ColSlider.onChanging = function(){
if(RadioEnglish.value){
ColNum.text = "DivideCol: " + Math.round(ColSlider.value);
}
}

var GapSizeSlider = myWin.add("slider");
GapSizeSlider.minvalue = 0;
GapSizeSlider.maxvalue = 5;
GapSizeSlider.value = 1;

var GapSizeNum = myWin.add("statictext", [20, 70, 130, 90], "GapSize: " + Math.round(GapSizeSlider.value) );

GapSizeSlider.onChanging = function(){
if(RadioEnglish.value){
GapSizeNum.text = "GapSize: " + Math.round(GapSizeSlider.value);
}
}

var chkEase = myWin.add("checkbox", [30, 10, 150, 30],"Ease IN / OUT");
chkEase.value=false;

chkEase.onClick = function(){
if(chkEase.value == true){

}
}

var chkQuick = myWin.add("checkbox", [30, 10, 160, 30],"Accelerate at the end");
chkQuick.value=false;

chkQuick.onClick = function(){
if(chkQuick.value == true){

}else{
}
}

var easeIn = new KeyframeEase(0.5, 50);
var easeOut = new KeyframeEase(0.75, 85);

var btnDefault = myWin.add("button", undefined, "Default");

btnDefault.onClick = function(){
RowSlider.value = 4;
ColSlider.value = 4;
GapSizeSlider.value = 1;

chkEase.value = false;
chkQuick.value=false;

funcDataRefresh();
}

var btnImport = myWin.add("button", undefined, "Import");
var btnCreate = myWin.add("button", undefined, "Create");

var SingleSelectFLG = true;

btnImport.onClick= function(){
var parentFileObj=new Folder("~/desktop/");
var result=parentFileObj.openDlg("Select the IMAGE file", ["image file:*.png"], false);
if(result!=null){
var openFileObj=new File(result);

funcSegmentationImage(importFile(openFileObj),"CutImage",4,4);
funcINIT();
}
}

function importFile(location) {
var myImageFile = new File(location);
var importOptions = new ImportOptions(myImageFile);
var footageItem = app.project.importFile(importOptions);
return footageItem;
}

function funcSegmentationImage(Ori_image, FileName, splitY, splitX){

var out = "~/Desktop/OutData";

var stepY = ori_image.height/splitY;
var stepX = ori_image.width/splitX;

var num = 0;

for ( var i = 0; i <= splitY; i++ ) {
for ( var j = 0; j <= splitX; j++ ) {

//pngOptを定義
var pngOpt = new ExportOptionsPNG24();
with (pngOpt) {
exportFormat = "PNG";
colorMode = "32 bit";
crop = "true";
cropBottom = (1+j)*stepY;
cropLeft = i*stepX;
cropRight = (1+i)*stepX;
cropTop = j*stepY;
}
var savePath = out+"/" + FileName+ "_" + (num++) + ".png";

var colorspace = true;
var bm = new BitmapData(pngOpt, colorspace);
bm.exportTo(new File(savePath), 100);

//exportFile(savePath),ExportType.PNG24,pngOpt);
}
}
}

btnCreate.onClick = function(){

}

var RadioJapanese = myWin.add("radiobutton", undefined, "Japanese");
var RadioEnglish = myWin.add("radiobutton", undefined, "English");

RadioEnglish.value = true;

RadioJapanese.onClick = RadioEnglish.onClick = function(){
//funcDataRefresh();
}

myWin.show();

//______________Below are the unused user functions.________________

function saveCanvas(canvas, saveType){
var imageType = "image/png";
var fileName = "sample.png";
if(saveType === "jpeg"){
imageType = "image/jpeg";
fileName = "sample.jpg";
}
/////var canvas = document.getElementById("myCanvas");
// base64エンコードされたデータを取得「data&colon;image/png;base64,iVBORw0k～」
var base64 = canvas.toDataURL(imageType);
// base64データをblobに変換
var blob = Base64toBlob(base64);
// blobデータをa要素を使ってダウンロード
saveBlob(blob, fileName);
}

// Base64データをBlobデータに変換
function Base64toBlob(base64){
// カンマで分割して以下のようにデータを分ける
// tmp[0] : データ形式（data&colon;image/png;base64）
// tmp[1] : base64データ（iVBORw0k～）
var tmp = base64.split(',');
// base64データの文字列をデコード
var data = atob(tmp[1]);
// tmp[0]の文字列（data&colon;image/png;base64）からコンテンツタイプ（image/png）部分を取得
var mime = tmp[0].split(':')[1].split(';')[0];
// 1文字ごとにUTF-16コードを表す 0から65535 の整数を取得
var buf = new Uint8Array(data.length);
for (var i = 0; i < data.length; i++) {
buf[i] = data.charCodeAt(i);
}
// blobデータを作成
var blob = new Blob([buf], { type: mime });
return blob;
}

// 画像のダウンロード
function saveBlob(blob, fileName){
var url = (window.URL || window.webkitURL);
// ダウンロード用のURL作成
var dataUrl = url.createObjectURL(blob);
// イベント作成
var event = document.createEvent("MouseEvents");
event.initMouseEvent("click", true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
// a要素を作成
var a = document.createElementNS("http://www.w3.org/1999/xhtml", "a");
// ダウンロード用のURLセット
a.href = dataUrl;
// ファイル名セット
a.download = fileName;
// イベントの発火
a.dispatchEvent(event);
}

Report · Oct 28, 2020

//I'm sorry, the source code was longer than I expected. I will reply to myself only where I do not understand.

function funcSegmentationImage(Ori_image, FileName, splitY, splitX){

var out = "~/Desktop/OutData";

var stepY = ori_image.height/splitY;
var stepX = ori_image.width/splitX;

var num = 0;

for ( var i = 0; i <= splitY; i++ ) {
for ( var j = 0; j <= splitX; j++ ) {

//pngOptを定義
var pngOpt = new ExportOptionsPNG24();
with (pngOpt) {
exportFormat = "PNG";
colorMode = "32 bit";
crop = "true";
cropBottom = (1+j)*stepY;
cropLeft = i*stepX;
cropRight = (1+i)*stepX;
cropTop = j*stepY;
}
var savePath = out+"/" + FileName+ "_" + (num++) + ".png";

var colorspace = true;
var bm = new BitmapData(pngOpt, colorspace);
bm.exportTo(new File(savePath), 100);

//exportFile(savePath),ExportType.PNG24,pngOpt);

}

}
}

Report · Dec 02, 2020

[Solved] I thought about an algorithm that assigns footage to components and crops them myself, and realized what I wanted to do. It seems that the following source code can also be used.

var crop_data = {
"Crop":true,
"Crop Bottom":0,
"Crop Left":0,
"Crop Right":8,
"Crop Top":10
};

app.project.renderQueue.item(1).outputModule(3).setSettings( crop_data );

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Crop Image file by AfterEffects Script