Any other Projects or assignments the student may be working on this week:

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1 Student CRP Form The purpose of this form is to accommodate a means for students to organize weekly project goals and to provide their results in a clear and measurable way. The CRP form will provide a means for the student to: Clearly identify weekly goals for a project Report if the week's goals were successful Provide any results for the week Start Date: 10/5/09 End Date: 10/09/09 Project Title: IronPython to Labview Connection Parent Project If Applicable: Success: YES / NO Any other Projects or assignments the student may be working on this week: 1) Database Group Project 2) Parallel- Questions From Book 3) Assist With HUD Project 4) Database Large Paper Assignment Goals for the week: Use the built in capability of RealXtend to connect to the Labview programming environment.

2 Purpose: Results and Findings: Task 1a) Download and install RealXtend version.5 Download RealXtend version.5 from the RealXtend downloads webpage. The RealXtend download webpage can be found at: You may also use the link below for direct access to the server download Task 1b) Create the IronPython Script for RealXtend to use to facilitate communication between RealXtend and Labview Step1) Locate the RealXtend folder and open it. Step 2) Open the rexserver folder

3 Step 3) Locate and Open the ScriptEngine Folder Step 4) Located and open the PythonScript Folder

4 Step 5) Located and open the Samples Folder Step 6) Open the init.py file using your prefered IronPython IDE. *If you do not have a IronPython IDE, one can be downloaded by following the link below: To Open a IronPython file using IDLE, right-click on the file and select edit with IDLE. Two windows will pop up. One will be the main shell window, and the other will be the python script. **If you would like to follow an Introduction to how to use IDLE for Python scripting,

5 Step 7) At the bottom of init.py, add import testobject2, and then save the file.

6 Step 8) In the folder containing the the sample python scripts, right click on the filed named testobject and choose copy. Next right click on a open portion in the file window and then choose paste.

7 Step 9) Now right click on the newly created file and choose to rename the file to testobject2.

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10 Step 10) Right click on the newly renamed testobject2 and choose to Edit with IDLE.

11 Step 11) Highlight everything everything in the testobject2.py window and delete it. Copy and paste the following python script into the window and then save the file. import rxactor import rxavatar import sys import clr asm = clr.loadassemblybyname('opensim.region.scriptengine.shared') Vector3 = asm.opensim.region.scriptengine.shared.lsl_types.vector3 import random import math import socket class Test2(rxactor.Actor): def GetScriptClassName(): return "testobject2.test2" def EventCreated(self): super(self. class,self).eventcreated() self.tickcount = 0 self.mytimer = self.createrextimer(4,18) self.mytimer.ontimer += self.handletimer print "testobject2.test2 EventCreated" def EventDestroyed(self): print "testobject2.test2 EventDestroyed" del self.mytimer self.mytimer = None super(self. class,self).eventdestroyed() def EventTouch(self,vAvatar): if(self.mytimercount > 0): self.llshout(0,"test already running...") return #self.llshout(0,"starting test 2") self.currenttest = 0 self.agentid = vavatar.agentid

12 self.mytimer.start() self.llshout(0,"connecting to LabView") s= socket.socket(socket.af_inet,socket.sock_stream) s.connect((" ",6342)) while 1: received = s.recv(1024) received = received.strip() if received: print received s.send("the message you sent was: ") s.send(received) self.llshout(0,"ouch! I just received "+ received) loc = self.llgetpos() + Vector3(1,1,1) self.llsetpos(loc) self.rexsettexturemediaurl(received, 1) def EventTick(self,vDeltaTime): self.tickcount += 1 textstr = "Tickcount:" + str(self.tickcount) + " delta:" + str(vdeltatime) self.llshout(0,textstr) def HandleTimer(self): self.currenttest = self.currenttest+1

13 Step 12) Congratulate yourself for adding an awesome function to the RealXtend IronPython library.

14 Task 1c) Launch the RealXtend Server and ready an object for communication with RealXtend. Step 1) Located the folder where you unzipped the RealXtend beneath the waves file. Find the file called StartStandAloneRexServer, and double click it. Three console windows will pop up and start rapidly scrolling text. The only one of these windows you will be concerned with the the one titled rexserver/opensim

15 This window will be where you can see some output from the Labview to RealXtend communication. Once we have the both the Labview and the RealXtend sides working, it will also let us know if we have any errors with the IronPython file we edited earlier. *note- You must wait until the server winow stops scrolling text before you launch the RealXtend viewer. Failure to wait will cause very difficult to catch bugs. Step 2) Downloaded and install the RealXtend Viewer. It can be found at or by following the direct link: Step 3) Open the viewer and log in using the following credentials: Name: Password: test

16 Step 4) An opening flash movie should start shortly. You can click NEXT to skip the movie. Step 5) Build an object in the realxtend environment Step 6) Right click on the object and choose edit Step 7) Now click on the rex tab and then the Misc tab

17 Step 8) Input the class name as testobject2.test2 and press ENTER Task 2 Open and configure a Labview window for accepting messages from a PC communication PORT. Step 1) Open the VI- TCP Communicator - Passive.vi The VI- TCP Communicator can be found by opening LabView and clicking on find examples. On the top left side of the NI Example Finder Window you will see that the Browse Tab is selected. Right underneath the Browse tab you will see a bubble that says browse according to. Select Directory structure. Then select the comm folder. You will find the TCP.lb

18 folder. Open the folder and then select the TCP communicator - Passive.vi. Note- The Passive communicator waits for a connection on a specific IP port. If no connection is detected in 10 seconds it times out. If a connection is detected it then waits for you to type some text into the Input Line text box. Once you hit enter, the text that was typed is sent to the PC port specified in the port text window. Task 3 Connect LabView to RealXtend With both RealXtend and the Passive Vi open, run the Passive VI in continuous mode. The Passive communicator starts listening on the port specified. Within 10 seconds, click the object inside of RealXtend that we added the class name to earlier. By running the Labview VI and then clicking the object in RealXtend, we have opened up a line a communication between the two. You can now send messages from Labview to an object inside of RealXtend. Type "Hello RealXtend" in the Input Line text box on the Labview TCP Communicator VI and press ENTER. If you have everything configured properly, you will see the message you sent using the VI in the Server console window. The object in RealXtend will also notify you that it has received input. Congradulations! You have just opened a communication pathway from Labview to RealXtend! Example Of what you will see in the environment

19 From LabView to the RealXtend Server Window

20 Appendix Example of IronPython Communication with Labview My first message sent from Labview to IronPython

21 My first message sent to IronPython and the reeceived from IronPython **this picture contains my first functioning python socket script.

22 My First Message sent from Labview to RealXtend