​

var arrin=[];

var org;

var upl;

var input;

var loadphoto=true;

var sd=55;

​

function preload() {

 /*if(loadphoto)

 {

  org = createImage(400,400);

  org = loadImage('/dino.jpeg');

 }

else

{

  org= createImage(400,400);

  org.loadPixels();

  loadStrings('/out5.txt', ldstr);

} 

*/ 

}

​

function ldstr(instr)

{

  //console.log("CALLED");

//console.log(instr.length);

for(var i=1; i<upl.pixels.length; i+=4)

{

upl.pixels[i]=instr[i];

upl.pixels[i+1]=instr[i+1];

upl.pixels[i+2]=instr[i+2];

upl.pixels[i+3]=instr[i+3];

​

//arrin.push(instr[i]);  

}

upl.updatePixels();

console.log("Image Loaded From Text File");

​

}

​

var x=0;

var y=0;

var thresh=1;

var threshvel=0;

var j=0;

var index1=0;

var index2=0;

var runonce=true;

​

function setup() 

  if(runonce)

  {

  cnv=createCanvas(400, 400);

  input = createFileInput(handleFile);

  input.position(0, height+10);

  button = createButton('ENCRYPT/DECRYPT');

  button.position(0, height+40);

  button.mousePressed(encrypt);

  saveimg=createButton('SAVE IMAGE');

  saveimg.position(0, height+70);

  saveimg.mousePressed(sve);

  savetxt=createButton("SAVE TXT");

  savetxt.position(150, height+70);

  savetxt.mousePressed(svetxt);

     runonce=false;

  }

  pixelDensity(1);

  org=createImage(400,400);

  org.resize(400,400);

   if(upl)

  {

  upl.resize(400,400);

  upl.loadPixels();  

  //image(upl, 0, 0); 

  img = createImage(400,400);

  org.loadPixels();

  img.loadPixels();

  for(var i=0; i<img.pixels.length; i++)

  {

  img.pixels[i]=upl.pixels[i];  

  }

  img.updatePixels();

  //console.log(img.pixels[1000] +","+ img.pixels[1001] +","+ img.pixels[1002]+"," + img.pixels[1003]);

  image(img,0,0);

  //image(org, 0,0);

  }

​

  /* Usded for learning how to access the index correctly. 

  console.log(img.pixels.length);

  var pixind=0;

  for(var i=0; i<height; i+=2)

  {

  for(var j=0; j<width; j++)

          {

          point(j,i);

          img.pixels[pixind]=0;

          img.pixels[pixind+1]=0;

          img.pixels[pixind+2]=0;

          //img.pixels[pixind]=0;

          pixind=ind(i,j) *4;  

          }

  }

  */

  //save(img.pixels, 'out.txt')

​

}

function draw() {

  //background(0);

}

​

​

​

function keyPressed()

{

//img=org;

//setup();

​

// console.log(keyCode);

  /*

  switch(keyCode)

  {

    case 38:        // 'up' increase seed

      sd++;

    break;

    case 40:         // 'down' decrease seed

      sd--;

      break;

  case 73:          // 'i' SAVE IMAGE FILE

    var mt= (minute());

    var fname= "out" + mt+ ".jpg"// + mt + ".jpg");

    save(img, fname);

    break;

  case 83:        //'s' SAVE text file

    var mt= (minute());

    var fname= "out" + mt+ ".txt"// + mt + ".txt");

    save(img.pixels, fname);

    break;

    case 69:      //'e' ENCRYPT picture

    encrypt();

    break;

}

*/

}

​

function ind(r, c)    // Returns Array index given a row/ col

{

var arrind=0;

arrind=r * width + c;

return arrind;  

}

​

​

function encrypt()

{

  // noprotect

  var temp=[];

  var tmp;

  var rnd=[];

   for(var i=width/2; i<width; i++)

   {

   rnd.push(i);

   }

  randomSeed(sd);

 for(var m=0; m<200; m++)

  {

  //  console.log(m);

        for(var i=0; i<rnd.length; i++)

        {

        tmp=rnd[i];

        rand=floor(random(rnd.length-1));

        rnd[i]=rnd[rand];

        rnd[rand]=tmp;  

        }

  }

  //console.log(rnd);

  skip=0

  for(var i=0; i<height-skip; i++)

  {

  for(var j=0; j<width/2; j+=1)

        { 

          index1=ind(i,j)*4;

          index2=ind(i, rnd[j])*4;

        temp[0]=img.pixels[index1];

        temp[1]=img.pixels[index1+1];

        temp[2]=img.pixels[index1+2];

        temp[3]=img.pixels[index1+3];

        img.pixels[index1]=img.pixels[index2];

        img.pixels[index1+1]=img.pixels[index2+1];

        img.pixels[index1+2]=img.pixels[index2+2];

        img.pixels[index1+3]=img.pixels[index2+3];

        img.pixels[index2]=temp[0];

        img.pixels[index2+1]=temp[1]

        img.pixels[index2+2]=temp[2]

        img.pixels[index2+3]=temp[3] 

        }

  }

​

​

  for(var j=0; j<width; j++)

  {

  for(var i=0; i<height/2; i+=1)

        { 

          index1=ind(rnd[i],j)*4;

          index2=ind(i, j)*4;

        temp[0]=img.pixels[index1];

        temp[1]=img.pixels[index1+1];

        temp[2]=img.pixels[index1+2];

        temp[3]=img.pixels[index1+3];

        img.pixels[index1]=img.pixels[index2];

        img.pixels[index1+1]=img.pixels[index2+1];

        img.pixels[index1+2]=img.pixels[index2+2];

        img.pixels[index1+3]=img.pixels[index2+3];

        img.pixels[index2]=temp[0];

        img.pixels[index2+1]=temp[1]

        img.pixels[index2+2]=temp[2]

        img.pixels[index2+3]=temp[3] 

        }

  }  

​

​

  img.updatePixels();

  image(img, 0, 0);

}

​

​

function handleFile(file) {

  //print(file);

  if (file.type === 'image') {

    upl=createImage(400,400);

    upl = loadImage(file.data, upl=>setup());

    //upl.hide();

  }

  else if(file.type== 'text')

  {

    var txtfile=[];

    var cleanfile=[];

    var fnm="'./" + file.name +"'";

    txtfile=file.data;

​

    var tt="";

    for(var i=0; i<txtfile.length; i++)

    {

    if(txtfile[i]!='\n')

    {

    tt=tt+txtfile[i];

    //cleanfile.push(int(txtfile[i])); 

    }

    else

    {

    cleanfile.push(tt);  

    tt="";  

    }

    }

​

    upl=createImage(400,400);

    upl.loadPixels();

   ldstr(cleanfile);

  setup();

  }

  else {

    upl = null;

  }

}

​

function sve(){

var mt= (minute());

var fname= "out" + mt+ ".jpg"// + mt + ".jpg");

    save(img, fname);

}

​

function svetxt()

{

var mt= (minute());

    var fname= "out" + mt+ ".txt"// + mt + ".txt");

    save(img.pixels, fname);

}

​

​

function convert(num)

{

var remainder=num;

var quotient=0;

var n=num;

var hexA=[];

var hexn="";

​

while(n)

{

quotient=floor(n/16)

remainder=n%16;

​

if(remainder<10)

{

hexA.push(str(remainder))  

}

else

{

switch(remainder)

  {

    case 10: hexA.push("A");

    break;

    case 11: hexA.push("B");

    break;

    case 12: hexA.push("C");

    break;

    case 13: hexA.push("D");

    break;

    case 14: hexA.push("E");

    break; 

    case 15: hexA.push("F");

    break;

  }

}

n=quotient;

}

for(var i=0; i<hexA.length; i++)

{

if(i==0)

{

if(hexA[i]!="0") 

hexn=hexn+hexA[i];

}

else

{

hexn=hexn+hexA[i];

}

}

return hexn;

}