LJ/examples/Processing/leapdots/leapdots.pde

import redis.clients.jedis.Jedis;
import java.util.ArrayList;
import com.onformative.leap.LeapMotionP5;
import com.leapmotion.leap.Finger;

LeapMotionP5 leap;
ArrayList<PVector> points = new ArrayList<PVector>();

int rgb2int(int r, int g, int b) {
  return (r << 16) + (g << 8) + b;
}

void setup() {
  size(640, 360);
  leap = new LeapMotionP5(this);
}

void draw() {
  background(51);
  stroke(255);
  strokeWeight(2); // adjust the thickness of the circle outline

  for (Finger finger : leap.getFingerList()) {
    PVector fingerPos = leap.getTip(finger);
    points.add(fingerPos);
  }

  if (points.size() > 0) {
    String pointList = "["; // initialize the point list string
    for (int i = 0; i < points.size(); i++) {
      PVector center = points.get(i);
      pointList += "(" + center.x + "," + center.y + ",0),";
      int[] rgb = {254, 254, 254};
      for (int j = 0; j < 15; j++) { // Update the loop to generate 30 points per circle
        float angle = map(j, 0, 15, 0, TWO_PI);
        float x = center.x + cos(angle) * 5;
        float y = center.y + sin(angle) * 5;
        pointList += "(" + x + "," + y + "," + rgb2int(rgb[0], rgb[1], rgb[2]) + "),";
        if (j > 0) {
          float prevX = center.x + cos(map(j - 1, 0, 15, 0, TWO_PI)) * 10;
          float prevY = center.y + sin(map(j - 1, 0, 15, 0, TWO_PI)) * 10;
          line(prevX, prevY, x, y);
        }
      }
    }
    points.clear();
    pointList = pointList.substring(0, pointList.length() - 1); // remove the last comma
    pointList += "]"; // close the point list string
    //System.out.println(pointList);
    Jedis jedis = new Jedis("localhost");
    jedis.set("/pl/0/0", pointList);
    jedis.close();
  }
}