int xpix;
int ypix;
color b;
double n,n2,n3;
double angle = 8*Math.PI/200;
color pixArray[][]=new color[1000][1000];
BImage a;
float r = 10;
float count;
float inc = .001;
int Delay = 5 ;
int xpos;
int ypos;
int newxpos;
float angleAxis;
boolean showImage = false;
float valueModifier = 1;

void setup() {
  size(640, 420);
  a = loadImage("holbein.jpg");
  xpix =  int(a.width);
  ypix = int(a.height);
  angleAxis = TWO_PI/ ( (width*width)  /  (1000)   );
}

void loop() {
  background(0,0,0);
  if (showImage) {
    imageMode(CORNER);
    //image(a, 5, 120);
    //valueModifier  = 10;
  }
  translate((width-a.width)/2,(height-a.height)/2,0);
  //rotateX(TWO_PI/width/2 * mouseY);
  //rotateX(TWO_PI/width*200);
  //rotateY(TWO_PI/height * mouseX);
  count+=inc;
  if (count>100) {
    //inc = -1;
  }
  float diff = xpos-mouseX;
  if (abs(diff) >  0.01f) {
    xpos -= diff/Delay;
  }

  diff = ypos-mouseY;
  if (abs(diff) >  0.01f) {
    ypos -= diff/Delay;
  }

  // rotates the whole image
  //rotateY(angleAxis * xpos);
  rotateX(1.2 * PI / height *  xpos);
    valueModifier  = width/(ypos+.01);
  
  for (int i=0; i<ypix; i++) {
    for (int ii=0; ii<xpix; ii++) {
      pixArray[ii][i] = a.pixels[i*a.width+ii];
      //a.pixels[i+ii]= pixArray[i][ii]+100;
      //set(ii, i, pixArray[ii][i]+100);
      //rotateX(TWO_PI/width/2 * mouseX/100);
      //rotateY(angleAxis * xpos/100);
      rotateY(angleAxis * count);
      stroke(pixArray[ii][i]);
      //strokeWeight(2);
      n = mouseX/2* Math.sin(angle*ii);
      n2 = mouseY/8* Math.cos(angle*ii);
      n2=0;
      //n3 = mouseY/2* Math.tan(angle*ii);
      //point(int(ii+n2),int(i+n),0);
      //point(int(ii),int(i),mouseX);
      float value = brightness(pixArray[ii][i]);
      value =  red(pixArray[ii][i]);
      point(int(ii)+ 10,int(i),int(value/valueModifier));
      //
      if (!showImage) line(int(ii) + 10,int(i),0,int(ii) + 10,int(i),int(value/valueModifier/100));
      //line(int(ii),int(i),0,int(ii+mouseX/10),int(i+mouseY/10),int(value/4+mouseY/10));
      //line(int(ii),int(i),0,int(ii),int(i),int(value/4+300/10));
    }
  }
}

void mousePressed() {
  showImage = true;
  count = 0;
  inc = 0;
}

void mouseReleased() {
  showImage = false;
  count = 0;
  inc = .001;
}