//Dot tracks color, click mouse to assign color to track



import processing.video.*;

Capture video;
color trackColor;//imports video


void setup()
{
  size(640, 480);//Size the video
  frameRate(30);
  colorMode(RGB,255,255,255,100);
  video = new Capture(this, 640, 480, 12);
  trackColor = color(255);
  noFill();
  smooth();
  strokeWeight(4.0);
  stroke(0);
}

void captureEvent(Capture camera)//reads webcam
{
  camera.read();
}

void draw()
{

  loadPixels();
  
  image(video,0,0);
  float closestDiff = 500.0f;
  int closestX = 0;
  int closestY = 0;
  for ( int x = 0; x < video.width; x++) {
    for ( int y = 0; y < video.height; y++) {
      int loc = x + y*video.width;
      color currentColor = video.pixels[loc];
      float r1 = red(currentColor); float g1 = green(currentColor); float b1 = blue(currentColor);
      float r2 = red(trackColor);   float g2 = green(trackColor);   float b2 = blue(trackColor);
      float d = dist(r1,g1,b1,r2,g2,b2); 
      if (d < closestDiff) {
        closestDiff = d;
        closestX = x;
        closestY = y;
      }
    }
  }
  fill(255,0,0,255);
  ellipse(closestX,closestY,16,16);
  line(closestX,closestY,1,1);
}
void mousePressed() {
  int loc = mouseX + mouseY*video.width;
  trackColor = video.pixels[loc];
}