GMU:(In)Visible Networks/Esra Demirel: Difference between revisions

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Revision as of 18:28, 7 July 2017

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EsraDem

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 While Captury is tracking people in order to create visualization inside Processing OSC protocol is used to have <br>
 communication between Captury System and Processing. <br>
+import oscP5.*;
+import netP5.*;
+OscP5 oscP5;
+NetAddress myRemoteLocation; // IP of Computer running captury, Port configured in software
+long lastMillis=0; // used to periodically send subscribe messages
+ArrayList <PVector> joints=new ArrayList <PVector>(); // used to buffer joint positions between oscEvent callbacks and "draw" calls
+void setup() {
+  fullScreen();
+  //size(800, 600);
+  oscP5 = new OscP5(this, 1065);
+  myRemoteLocation = new NetAddress("141.54.159.160", 1065); // our computer...
+}
+void draw() {
+  // periodically ask the captury server to send us data.
+  if (millis()-lastMillis>5000) {
+    // The format is as follows:
+    //"/subscribe/<Actor_name>/<skeleton_data_type>/<joint_name>/<data_format>"
+    //most of the placeholders can be replaced by a "*" for "everything"
+    // unfortunately, if you subscribe to too many things, a bug in the captury will lead to malformed OSC-bundles that in turn crash OSCP5
+    OscMessage myMessage = new OscMessage("/subscribe/*/blender/Head/vector"); // get positions ("vector") of all joints of actor "felix_braun_rot" in mm
+    oscP5.send(myMessage, myRemoteLocation);
+  }
+  strokeWeight(4);
+  // go through list of joints and draw them all
+  frameRate(5);
+  fill(101, 50);
+  stroke(255, 30);
+  background(0);
+  for (int i=0; i<joints.size(); i++) {
+    //draw everything here
+    point(joints.get(i).x/5+width/2, joints.get(i).y/5+height/2);
+    line(random(600), random(600), joints.get(i).x/5+width/2, joints.get(i).y/5+height/2);
+  }
+  joints.clear();
+}
+/* incoming osc message are forwarded to the oscEvent method. */
+void oscEvent(OscMessage theOscMessage) {
+  println(theOscMessage); // debug out
+  // only use packages that contain position data as three floats
+  if (theOscMessage.checkTypetag("fff")) {
+    joints.add(new PVector(theOscMessage.get(0).floatValue(), theOscMessage.get(1).floatValue(), theOscMessage.get(2).floatValue()));
+    println( theOscMessage.get(0).floatValue());
+    println( theOscMessage.get(1).floatValue());
+    println( theOscMessage.get(2).floatValue());
+  }
+}
+This Processing Sketch show how OSC protocol is used and how our draw function is inserted inside that protocol.
+First of all oscP5 and netP5 libraries are imported inside the sketch.In order to use OSC protocol we have to import those library. There are 3 messages received from Captury, they are x,y,z coordinates of the tracked person locations.