Wekinator Example

float p1 = 0.5;
float p2 = 0.5;
float p3 = 0.5;

//Necessary for OSC communication with Wekinator:
import oscP5.*;
import netP5.*;
OscP5 oscP5;
NetAddress dest;

void setup() {
  size(640, 360, P2D);
  colorMode(HSB);
  //Initialize OSC communication
  oscP5 = new OscP5(this, 12000); //listen for OSC messages on port 12000 (Wekinator default)
  dest = new NetAddress("127.0.0.1", 6448); //send messages back to Wekinator on port 6448, localhost (this machine) (default)
  rectMode(CENTER);
  noStroke();
}

void draw() {
  background(255);
  float x = width*p1;
  float y = height*p2;
  float colour = 255*p3; 
  fill(colour, 255, 255);
  rect(x, y, 50, 50);
}

//This is called automatically when OSC message is received
void oscEvent(OscMessage theOscMessage) {
  if (theOscMessage.checkAddrPattern("/wek/outputs")==true) {
    if (theOscMessage.checkTypetag("fff")) { //Now looking for 2 parameters
      p1 = theOscMessage.get(0).floatValue(); //get this parameter
      p2 = theOscMessage.get(1).floatValue(); //get 2nd parameter
      p3 = theOscMessage.get(2).floatValue(); //get third parameters
      println("Received new params value from Wekinator");
    } else {
      println("Error: unexpected params type tag received by Processing");
    }
  }
}