void keyPressed(){

  //println(keyCode);

  if(keyCode==521){

    //PLUS
    noLoop();

    //Update globalR
    globalR+=1;
    globalR=constrain(globalR,3,101);
    //println("GLOBAL R: "+globalR);

    ///Generate new hexagons
    generateGrid();

    //Restore loop
    loop();

  }
  else if(keyCode==45){

    //MINUS

    //Stop loop
    noLoop();

    //Update globalR
    globalR-=1;
    globalR=constrain(globalR,3,100);
    //println("GLOBAL R: "+globalR);

    ///Generate new hexagons
    generateGrid();

    //Restore loop
    loop();

  }

  //ARROWS
  if(keyCode==38){

    //UP
    if(originalImg.height>height){
      imgCropY-=1;
      imgCropY=constrain(imgCropY,0,originalImg.height-height);
    }

  }
  else if(keyCode==40){

    //DOWN
    if(originalImg.height>height){
      imgCropY+=1;
      imgCropY=constrain(imgCropY,0,originalImg.height-height);

    }

  }
  else if(keyCode==39){

    //RIGHT
    if(originalImg.width>width){
      imgCropX+=1;
      imgCropX=constrain(imgCropX,0,originalImg.width-width);

    }

  }
  else if(keyCode==37){

    //LEFT
    if(originalImg.width>width){
      imgCropX-=1;
      imgCropX=constrain(imgCropX,0,originalImg.width-width);

    }

  }

  //Any Arrow  
  if(keyCode==37||keyCode==38||keyCode==39||keyCode==40){
    img=imgCropAndFilter(originalImg,imgCropX,imgCropY,width,height);
  }

  //println(keyCode);


}