Work in progress

bbcascii.pde

PrintWriter output;
//String scale = "@ M B H E N R # K W X D F P Q A S U Z b d e h x * 8 G m & 0 4 L O V Y k p q 5 T a g n s 6 9 o w z $ C I u 2 3 J c f r y % 1 v 7 l + i t [ ] { } ? j | ( ) = ~ ! - < > ^ _ ' ; , : ` .";
String scale = "@ M B H E N R # K W X D F P Q A S U Z * 8 G & 0 4 L O V Y 5 T 6 9 $ C I 2 3 J % 1 7 + ? ( ) = ! - < > ' ; , : .";
String[] scaleChars = split(scale, " ");

String mImageFileName = "sal.jpg";
int mImageWidth = 529;
int mImageHeight = 532;

int mColumns = 65;
int mLines = 32;

String[] asciiLines = new String[mLines];

PImage img;
int[][] imgPixels;

  int mCellWidth;
  int mCellHeight;

void setup() {
  size(mImageWidth, mImageHeight);
  output = createWriter("asciibbc.txt"); 
  rectMode(CENTER);
  noFill();
  stroke(0);
  
  img = loadImage(mImageFileName);
  
  mCellWidth = mImageWidth/mColumns;
  mCellHeight = mImageHeight/mLines;
  
  println("mCellWidth: " + mCellWidth);
  println("mCellHeight: " + mCellHeight);
  
  imgPixels = new int[mImageWidth][mImageHeight];
  
  for (int i = 0; i < mImageHeight; i++) {
    for (int j = 0; j < mImageWidth; j++) {

      imgPixels[j][i] = img.get(j, i);
    }
  }
}


void draw() {
  noLoop();
  background(0);
  image(img, 0, 0);
output.println("1 MODE0");
int line = 0;
String ascii = "";
  for (int i = 0; i < mImageHeight; i += mCellHeight) {
    println("Line i: " + i);
    
    for (int j = 0; j < mImageWidth; j += mCellWidth) {
      println("Column j: " + j);
      float rr = red(imgPixels[j][i]); 
      float gg = green(imgPixels[j][i]);
      float bb = blue(imgPixels[j][i]);
      float luminance = (0.299*rr + 0.587*gg + 0.114*bb);
      fill(luminance);
      
      int remappedLuminance = (int) map(luminance, 0, 255, 0, scaleChars.length);

      println("LUMINANCE: " + luminance + " REMAPPED: " + remappedLuminance);
      ascii = ascii + scaleChars[remappedLuminance];
      
      
      rect(j, i, mCellWidth, mCellHeight);  
  }

  if(line > mLines -1){
    line = mLines - 1;
  }
  asciiLines[line] = ascii;
  ascii = "";
  line++;
}


for(int i = 0 ; i < mLines ; i++){
  println(asciiLines[i]);
   output.println("" + ((i+1) * 10) + " PRINT\"" + asciiLines[i] + "\"");
}

output.flush();  // Writes the remaining data to the file
  output.close();  // Finishes the file
}