while(true){
  //die computer die!!
}
 

import processing.pdf.*;

boolean operationComplete = false;	  //Finished drawing?
boolean savedFile = false;		    //Saved file?
boolean pixel = false;			  //Draw pixel rectangles?
boolean lines = true;			   //Draw lines?
boolean quadDraw = false;		     //Draw only in 4 directions?
PImage scan;					//Image to scan
int col;					    //Current colour
int i = 0;					  //Iteration
int magnify = 20;				 //Scaling
int getRow = -1;				  //Row counter
void setup(){
  //Run once then rectify actual scan dimensions
  size(212 * magnify, 160 * magnify, PDF, "vector.pdf");
  //change to appropriate file
  scan = loadImage("logoc.gif");
  println("wide:" + scan.width + " high:" + scan.height);
  background(255);
  rectMode(CENTER);
  scan.loadPixels();
  noFill();
}

void draw(){
  if(!operationComplete){
    col = scan.pixels[i];
    if(col != #FFFFFF){
	if(lines){
	  for(int j = 0; j < scan.pixels.length; j++){
	    int xj = j % scan.width;
	    int yj = j / scan.width;
	    int xi = i % scan.width;
	    int yi = i / scan.width;
	    if(i != j && xj >= xi && !(xj == xi && yj < yi) && !(quadDraw && (xj != xi && yj != yi && (abs(xj - xi) != abs(yj - yi))))){
		if(bline(i % scan.width, i / scan.width, j % scan.width, j / scan.width, col, scan) == 0){
		  stroke(col);
		  line((i % scan.width)*magnify, (i / scan.width)*magnify, (j % scan.width)*magnify, (j / scan.width)*magnify);
		}
		else{
		  stroke(0);
		}
	    }
	  }
	}
	if(pixel){
	  fill(col);
	  rect((i % scan.width)*magnify, (i / scan.width)*magnify, magnify, magnify);
	}
    }
    if (i == scan.pixels.length - 1){
	operationComplete = true;
    }
    else{
	i++;
	int yi = i / scan.width;
	if(yi > getRow){
	  getRow = yi;
	  println("Scanning row:" + getRow + " of " + scan.height);
	}
    }
    if(operationComplete && !savedFile){
	exit();
	savedFile = true;
	println("all done");
    }
  }
}