I've solved (at least to a preliminary extent) the threading issue with Manuel's implementation of Rune Andersen's eyesweb-p5 code.

I'll post a zip file with my changes in the near future, but I've got to run to class soon, so I'll just describe what I did here.

First, I downloaded the CubbyHole.java file from java.sun.com.  This is a simple synchronized data structure. I modified it to store Objects instead of ints.  

Then I modified Manuel's version of Rune's eyeswebsocket.java to have a private CubbyHole object, and put the received data into that CubbyHole after it is received. I also added a getCubbyHole() method to retrieve the cubbyhole object for use by the main part of the program.

Then I added the following code to my main Processing project file:

public class Javaserver3 extends PApplet {

eyeswebsocket myServer;
       private volatile Thread serverThread = null;
CubbyHole myQueue;
int[][] myMatrix;

void setup() {
size(800,600);
myServer = new eyeswebsocket(7777);
myQueue = myServer.getQueue();
myServer.Verbose=true; // No debug messages
myServer.blocking=false;  //change this to true to put it back the way it was
myServer.waitconn();

   
               if (serverThread == null) {
                  serverThread = new Thread(myServer, "Server1");
                  serverThread.start();
               }
}

void draw() {
println("frame!");
background(0);
fill(255,0,0);
myMatrix = (int[][]) myQueue.get();
rect(myMatrix[0][0],myMatrix[1][0],myMatrix[2][0],myMatrix[3][0]);
 }
}

You should be able to figure out the important parts, but basically this sets up the eyeswebserver, then waits for a connection. Once the connection is detected, it creates a new thread to handle the data recieve stuff.  The draw function just draws a rectangle (in this case, my input is a mocap entry converted to a matrix, so its the x, y, width, height of the rectangle).

I hope this proves helpful; as I said, I'll make a more generalized version and post it in an archive later tonight.

Ryan

Haylp!

I've got a String being piped over to Processing using OSC working fine. Even upacking the String and everything is working hunky dory.

My issue is that I don't know the port or host settings for comms between two machines. I've got two nice and fast university PCs but no communication yet.

Code:

void initOsc() {
  //I don't know how to set the next 3 properties
  receiveAtPort = 12000;
  sendToPort = 57120;
  host = "127.0.0.1";
  oscP5event = "oscEvent";
  oscP5 = new OscP5(
   this,
   host,
   sendToPort,
   receiveAtPort,
   oscP5event
  );
}
 

My knowledge of networks and hardware is very limited I'm afraid. All I know is that I plug it into the wall - there's some houdoo - and then I get internet or I'm plugged into another machine. I generally have to rely on an I.T. friend for networking.

At the moment though I'm on my own. Any help?

Slightly different method to what I used. I went into Network Connections and set the IP of PC1 to 198.162.0.1 and set PC2 to 198.162.0.2

Then I set the host on PC1 to the IP of PC2 and vice versa.

I used the Command Prompt to send a ping to check everything was coolio.

It worked!

Then we plugged a DV camera into a capture card on the PC. We used the WDM input block (not the DV Camera) and waved different coloured stuff in front of the camera and watched it move circle markers around on the Processing PC.

A fantastic day.

I will modify this post on Monday evening to include a link to the files used so far. Our next step is to get a second camera input streaming out data from a perpendicular angle to camera two - 3D motion tracking! Will post findings.

Incidentally v3ga's blob tracking can reduce a silhouette to a continuous line. Unless you're already going down this route, it might be a way to reduce the data being sent.

http://www.v3ga.net/show.php?id=6&type=0

You could send an array composed of the points in the drawing routine.

Update:

http://www.robotacid.com/PBeta/motion

HAllo,
st33d
do you know if is possible have a silhouette to a continuous line or array of edge under eyesweb like with v3ga or Jmayron traking lib..

ciao

thetoad

Looks like I spoke too soon. I've translated v3ga's edge detection into Beta.

Edge Detection

But it doen't seem to adapt to the polygon detection you're looking for. I imagine you'd want to use some simple algorithm like this one:

Polygon test

Which would be looking for one polygon mass.

I have one idea but i dont have the skill to doit...(or to try)

what about to do a hack from eyesweb dll lib direct to processing using JNI (http://java.sun.com/j2se/1.4.2/docs/guide/jni/)

thetoad

hey, wanted to thank all of the eyesWeb guys for laying the groundwork for the 8-blobs tracking patch i built that sends the coordinates and the number of blobs to processing.

i posted the patch as well as the prototype sketch in my weblog:

http://www.sport4minus.de/blog/?p=46

feel free to use it... and please, if theres any eyesWeb "pro" reading this post, let me know if the patch makes sense "as is" or if theres a smarter way to do this...

greetings from berlin,
jens
http://www.sport4minus.de