Full HTML for Basic User View of Tango Features with tutorial

Full HTML for

Basic foilset User View of Tango Features with tutorial

Given by Geoffrey C. Fox at NPAC Tutorial on Tango/WebWisdomNT on October 26 98. Foils prepared October 26 98
Outside Index Summary of Material

Pictorial Overview of Tango highlighting applications and features

Basic Tango Tutorial for Users

Set up for slide show use

Missing WebWisdom and Shared Browser

Table of Contents for full HTML of User View of Tango Features with tutorial

Denote Foils where Image Critical

Denote Foils where HTML is sufficient

1

Multi-Lingual Collaborative Dance
2

Tango and WebWisdom Training NPAC October 26 1998
3

Topics Covered
4

Tango Interactive Web Collaboratory Share Any Application around the world PC and UNIX Platforms
5

Distance Learning
6

Electronic Communities
7

Crisis Management
8

Play Games
9

TangoInteractive is Sharing Your Web application
10

Getting Started with Tango I
11

Getting Started with Tango II
12

An Example of Tango Java Server, Web Servers and Clients Architecture of JSU Distance Education
13

Some Details on Tango Architecture
14

Architecture of Tango
15

Multi-Lingual Collaborative Dance
16

TangoInteractive is Just One Click -- Integrated into Web Browser
17

Getting Started with Tango III
18

Download the Java Controls Login into the Java Server
19

Click the Chat Icon to start a Session
20

Starting or Joining a Session
21

A Session is An Application and a Group of Users You can join a session
22

TangoInteractive can share Client Java Applets JavaScript Java Applications C++ Server Simulations Web-linked Databases CORBA Lotus Notes ....
23

What does Sharing Mean in Tango?
24

Two Shared Physics Simulations and audio video conferencing
25

Foil 1 Multi-Lingual Collaborative Dance

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Web Pages

Java

C++

HTML version of Basic Foils prepared October 26 98

Foil 2 Tango and WebWisdom Training NPAC October 26 1998

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Tango Team

NPAC

Syracuse University

111 College Place

Syracuse NY 13244-4100

tango@npac.syr.edu

http://www.npac.syr.edu/tango

HTML version of Basic Foils prepared October 26 98

Foil 3 Topics Covered

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Web-based Training Issues

TangoInteractive Collaborative System

Demonstration
Overview of Collaborative Systems
User view of Tango
System view of Tango
High level Description of API
Developers view of API

WebWisdomNT Curricula Database and Instructional Management System

Hierarchical Curricula classification
XML server
PowerPoint authoring Support

LeCorder lecture recording and web export system

Other Applications of TangoInteractive/ WebWisdomInteractive technology outside education and training

Futures

HTML version of Basic Foils prepared October 26 98

Foil 4 Tango Interactive Web Collaboratory Share Any Application around the world PC and UNIX Platforms

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 5 Distance Learning

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Distance Learning

HTML version of Basic Foils prepared October 26 98

Foil 6 Electronic Communities

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Electronic Communities

HTML version of Basic Foils prepared October 26 98

Foil 7 Crisis Management

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

CRISIS MANAGEMENT

HTML version of Basic Foils prepared October 26 98

Foil 8 Play Games

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

PLAY GAMES

HTML version of Basic Foils prepared October 26 98

Foil 9 TangoInteractive is Sharing Your Web application

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Your Web

Application

Sharing

HTML version of Basic Foils prepared October 26 98

Foil 10 Getting Started with Tango I

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Using Tango is just a mouse click to download an applet as long as certain preparations have been made

Tango involves a bunch of collaborating machines (called clients) which are linked together by a Java Tango server. There are default Tango servers which can always be chosen but specialized Tango applications often use their own server.

A Tango client fetches programs from a Web Server NOT from the Java Server

server

Client

Web Server

Client

HTML version of Basic Foils prepared October 26 98

Foil 11 Getting Started with Tango II

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

After understanding which Server you will use, Tango must be installed on your machine. This involves installing a Netscape plug-in and also a C++ audio-video conferencing system Buena Vista

Then each time you wish to load Tango, one must download the "control application" (CA)which is a Java Applet.

This involves selecting a particular Web Server and clients setup with different Web Servers can collaborate using the same Java Server
Each downloaded client has a (possibly different) configuration file specifying where each Tango application is to be loaded from. This allows one to use mirror sites to improve performance
In simplest case, everybody chooses the same Web Server

Collaboration involves two or more clients sharing information and this covers both the teacher-students interaction in education; commander-firefighters interaction in a crisis; and the linkage of researchers in a distributed scientific collaboratory.

HTML version of Basic Foils prepared October 26 98

Foil 12 An Example of Tango Java Server, Web Servers and Clients Architecture of JSU Distance Education

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 13 Some Details on Tango Architecture

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

The previous page shows the architecture of our distance education project where we taught CSC499 from Syracuse University to Jackson State fall 97 and spring 98. Note the mirrored Web servers (one at Syracuse and one at JSU) but single Java Server

Note The Java Server does not receive or dispense a large amount of data. For basic curricula it just transmits a URL string (a few bytes) while for audio-video conferencing data, the server establishes the session but the multimedia data is transmitted on separate channels.
The server is very robust and can handle many users

The next page shows the

Tango daemon downloaded in the plug-in
The Control Applet downloaded from a Web Server
The Java Server -- a Java application running on NT or UNIX -- which must be instantiated ahead of time
shared applications can be C++, JavaScript or Java (applet or application)

HTML version of Basic Foils prepared October 26 98

Foil 14 Architecture of Tango

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Java Tango

Server

Netscape Browser

Tango

Daemon

Shared Applet 1

Shared Applet 2

Shared

Java/C++/..

Application

Socket Connections

Client Side Bus

Netscape's

LiveConnect

Typical Client

Other

Collaborating

Clients

Shared

JavaScript/ Web Page

Tango CA

HTML version of Basic Foils prepared October 26 98

Foil 15 Multi-Lingual Collaborative Dance

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Web Pages

Java

C++

HTML version of Basic Foils prepared October 26 98

Foil 16 TangoInteractive is Just One Click -- Integrated into Web Browser

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Tango Interactive is Integrated into Web Browser

Start with One Click

HTML version of Basic Foils prepared October 26 98

Foil 17 Getting Started with Tango III

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

After requesting a Tango download of control applet, one may get a security dialog (grant permission to download and remember decision), and first one is asked (as on previous page) to choose a server

Servers are available for distribution but typically start with default one
one also asked to choose a "control interface" which just correspond to different selections of applications to share

After a while, if all goes well, one gets the request to "login" which currently just requires that you type in a unique "handle" by which you are known in the collaboration room.

In Tango1, each server supports a single room but we will see that although all users are potential participants in a shared application, one can set up complex relationships as any given session can involve a different subset of users.
Currently Tango has no security mechanisms in the login process although one has some control over allowed actions in a given shared application.

Note we define a session as an instance of an application shared by a set of users. One can have any number of sessions based on a given application which separate instantiations of the application and different subsets of users. As we will see users decide who joins a given session.

HTML version of Basic Foils prepared October 26 98

Foil 18 Download the Java Controls Login into the Java Server

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 19 Click the Chat Icon to start a Session

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 20 Starting or Joining a Session

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Sessions can either be started or joined

Sessions can be joined either because the master adds a user or because a user requests it.

Sessions are started from the icons under the tags in the middle of the CA's user interface

Suppose the teacher has started a chat or other session. Then it appears on the list of sessions at the bottom middle section for ALL clients. Highlighting it, one see that join is an option (shown in left bottom panel)

Click the join button and you become part of this session

The chat applet is downloaded to client that joined. Highlighting chat now shows this client as a participant.

For chat, this happens almost instantaneously. For more complex applications, the registration process takes longer as Tango only accepts a joined client when The Java applet is properly loaded

HTML version of Basic Foils prepared October 26 98

Foil 21 A Session is An Application and a Group of Users You can join a session

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 22 TangoInteractive can share Client Java Applets JavaScript Java Applications C++ Server Simulations Web-linked Databases CORBA Lotus Notes ....

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 23 What does Sharing Mean in Tango?

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

For a chat, sharing is clear -- one shares the text typed in by the different users.

Now start and share in the same way, one or more of the simple physics applets -- spring or cross-product.

The teacher (deemed the master if he or she started it) can move the Position of the spring and the Force and Energy change in response.

All applets in the same session follow the behavior of the master
Maybe your spring does not follow? Did you join this session or another one? Perhaps you started a new session by clicking on spring icon rather than by highlighting spring session and clicking on join!
Note that "slaves" cannot move spring position -- they are meant to gaze in wonder and growing understanding as teacher moves spring and uses video conferencing to wax eloquent about the physical principles

In spring case, Tango shares state defining applet -- here the position of the Spring.

HTML version of Basic Foils prepared October 26 98

Foil 24 Two Shared Physics Simulations and audio video conferencing

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 25 More on Sharing in Tango

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Tango can share any client or server application whose state can be determined and set. Tango finds the state from the master and transmits it to the slave clients

For efficiency, Tango usually transmits "the change in state" and not state itself -- for spring it is as easy to transmit absolute state x as change dx in state. For chat, change in state (latest text typed) is natural.
For server applications, one finds and sets state through web interface which can be URL (perhaps with CGI extension) or even CORBA interface to a distributed object.

Porting an application to Tango, requires sending messages from master with state (change) and receiving them on slave. Hardest perhaps is knowing what the state is!

HTML version of Basic Foils prepared October 26 98

Foil 26 Multi-Lingual Collaborative Dance

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Web Pages

Java

C++

HTML version of Basic Foils prepared October 26 98

Foil 27 Either Join or Master Remote Opens

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 28 Join or Remote Open Possible

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

We showed how users could be added to sessions by clients joining a session initiated by the master.

Alternatively, one can use a remote open command shown on previous and next two pages

This is appropriate when one is sure that a group of users need to participate. This is typically the case in a distance education class when students have logged into Tango and teacher wishes to launch a shared application (e.g. the cross-product applet) on all student machines.

When teacher highlights the cross-product session (and no other users have joined), he or she is offered the allowed choices:

local close which will terminate session or
remote open which can spread session to any of the other users

The dialog box that jumps up allows one either to select specific users or all -- the latter is a good option for education when one typically wants all students involved.

We will see later how the configuration tab, allows clients to prevent unwanted remote opens cluttering their windows

HTML version of Basic Foils prepared October 26 98

Foil 29 Use Remote Open to add other Users

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 30 Select the Users for Remote Open

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 31 TangoInteractive is Sharing Your Web application

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Your Web

Application

Sharing

HTML version of Basic Foils prepared October 26 98

Foil 32 Changing the Master Status

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

The master status can be changed at the request of either master or slave

Highlight the session as usual and the
master is allowed to grant master or
any slave is allowed to become master

As in remote open, configuration tab, allows one to control unwanted transfer of master status

As an example, one could use this in education to allow student to control the spring applet and demonstrate that they understood basic ideas.

HTML version of Basic Foils prepared October 26 98

Foil 33 You can Transfer Master Status

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 34 TangoInteractive can share Client Java Applets JavaScript Java Applications C++ Server Simulations Web-linked Databases CORBA Lotus Notes ....

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 35 Microsoft's NetMeeting runs under Tango -- It has a more limited sharing Model - Master

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 36 Tango supports Microsoft NetMeeting

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Microsoft currently supplies NetMeeting for Windows 95/98/NT

This supports a different model for sharing

When you share Word for example, there is only one copy of application running on the master
In Tango classic shared event model, the application (e.g. spring applet) runs separately on each machine

At its simplest, NetMeeting shares the "display" (frame buffer produced by application)

This explains curious hatched area on following page. This corresponds to part of Word window that is obscured on the master but not on the slave.

NetMeeting captures mouse and keyboard actions in the shared window and treats these as shared events

This allows shared editing with a difficult master-slave model

This is an example of Tango interfacing to a C++ client application -- Microsoft's NetMeeting

HTML version of Basic Foils prepared October 26 98

Foil 37 Microsoft's NetMeeting runs under Tango -- It has a more limited sharing Model - Slave

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 38 Multi-Lingual Collaborative Dance

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Web Pages

Java

C++

HTML version of Basic Foils prepared October 26 98

Foil 39 Control Applet has Administrative Tab with users and details about them

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 40 Users Information in Tango

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

There are other capabilities of Control Application with users, mailbox, configuration and help tabs

The users tab can tell you more about all the users who are logged into the Tango Server

Their handle (login name), name of their client machine, status message, and time they last changed status

Each user is responsible for setting status message

On next page, we show the result of double clicking on a given user.

Up pops more information!

You can ping the user -- send a message to see the user machine is still alive.

If the ping works, try a hail which tries the wake the user up so he or she can collaborate with you.

Use a chat window to have a more detailed dialog with a hailed user

HTML version of Basic Foils prepared October 26 98

Foil 41 Wake Up a User! Find their sessions and work status

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 42 TangoInteractive is Sharing Your Web application

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Your Web

Application

Sharing

HTML version of Basic Foils prepared October 26 98

Foil 43 Set Your Preferences in Configuration Tab

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 44 The Configuration Tab

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Clicking the configuration tab, we can inspect some useful system parameters

The Tango Console should be left unchecked by most users -- default
Voice messages are defaulted to on but this is pretty silly -- turn them off -- as generally they are just a distraction

One can define the processing of remote requests -- change master status and remote open/close

always approved is default but you can choose always disapprove or that a confirmation box be displayed at each such request

On the right, one has a configuration file window which is only useful if there is a problem -- it will tell you where the information for each application is stored.

Maybe some wizard can use this to a debug a problem

HTML version of Basic Foils prepared October 26 98

Foil 45 Use Java Console from Netscape to Debug

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 46 Don't forget the Java Console!

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Although the Tango Console is not so useful, one can usefully invoke the Java Console from the communicator menu at the top of the Netscape window

The Java Console can tell you if Netscape or Tango has made a mistake

Even if you can't interpret it, copy and paste the console into your bug reports so the Tango team can diagnose problems

Note you can start the Console at any time and still see past information and so you can wait till a problem develops

HTML version of Basic Foils prepared October 26 98

Foil 47 Multi-Lingual Collaborative Dance

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Web Pages

Java

C++

HTML version of Basic Foils prepared October 26 98

Foil 48 Tango has many Applications

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Tango has lots of applications ranging from the serious to the frivolous; from the essentially bug-free to cases which are only illustrative due to implementation problems.

Tango has a well defined API which allows diverse applications to be ported to it.

For instance, the current release of Tango sports three versions of chat.

Each of these can be invoked any number of times.
They have different tradeoffs from the serious dull text only version to the cool 2.5D graphical version which is cool (to a K-12 audience) but perhaps not the most efficient (to our busy executive)

HTML version of Basic Foils prepared October 26 98

Foil 49 TangoInteractive is a flexible framework -- 3 chats

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Shared Streaming Video

HTML version of Basic Foils prepared October 26 98

Foil 50 Multimedia Applications

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Tango has several multimedia applications

We have already seen the digital audio-video conferencing system Buena Vista
However we can also share audio and video files

The multimedia applications only use the Tango Server for control information. The high volume data is sent by separate channels outside the Tango Server

This ensures that the Tango server is highly robust and scales well as number of users increases.

The deployed version of Tango shares audio and video files using Java applets to decode multimedia data on the client (Video is low bandwidth H263)

Inside NPAC, we support a high end version with both MPEG and H263 codecs

HTML version of Basic Foils prepared October 26 98

Foil 51 Download The Built in Digital Audio Video with Tango Client

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 52 Tango Interactive Web Collaboratory Share Any Application around the world PC and UNIX Platforms

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 53 Tango Offers Two White Boards

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 54 There are many Whiteboards

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Tango offers two basic whiteboards

One has a simple intuitive interface but is not so powerful
The other is much powerful but is harder to use
This sophisticated whiteboard is also used as part of the WebWisdom shared curricula tool as one optional display mode

The variety of such tools is a key advantage of a framework like Tango -- you can adopt it for your particular application and expect that the open API will allow a variety of basic tools such as whiteboards and chats to be developed to support your application

You are not locked into a particular generic support tool

Another whiteboard is used in the popular mapper shared application where one has maps displayed on the whiteboard

Pan through the maps with interface at top left
Add shared icons, text and freehand drawing

HTML version of Basic Foils prepared October 26 98

Foil 55 A Shared Java Mapper used in Crisis Management

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 56 You Choose what to share in Tango

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

These whiteboards illustrate your freedom in defining shared events in Tango

For each of the three examples just discussed (basic whiteboards and mapper), all users in the session can freely modify the whiteboard

For the mapper for instance anybody can add icons (and everybody sees them) and anybody can change the viewpoint (controlled by graph on top left)

We could have made a different choice, with for instance only the master able to set the viewpoint.

Each event can be treated differently -- all could set icons with master only setting viewpoint and text
these choices can also be dynamically changed

This illustrates power of shared event model as one can choose which events to share and change this at any time

It is all "just software"!

HTML version of Basic Foils prepared October 26 98

Foil 57 TangoInteractive is Sharing Your Web application

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

Your Web

Application

Sharing

HTML version of Basic Foils prepared October 26 98

Foil 58 Games are Natural in Tango Othello and the Magic Cube

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 59 More Applications: Games and Physics

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

So games are a natural applications of collaborative system

Othello is an interesting and serious 2 player game where you can also play as an individual against the computer
The magic cube can use use the the ability of transferring master status to allow a slave(observer) take control and solve the puzzle started by the original master

We showed two simple physics applications but we also have more sophisticated shared applets illustrating planetary motion and computational fluid dynamics (CFD)

CFD just shares data and display options and solves the equations (written in Java) fully on each machine
Planetary motion will start and stop the planets motion and then resume the simulation

HTML version of Basic Foils prepared October 26 98

Foil 60 Shared Simulations -- Fluid Flow and Planetary Motion

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

HTML version of Basic Foils prepared October 26 98

Foil 61 TangoInteractive can share Client Java Applets JavaScript Java Applications C++ Server Simulations Web-linked Databases CORBA Lotus Notes ....

From User View of Tango Features with tutorial NPAC Tutorial on Tango/WebWisdomNT -- October 26 98. *

Full HTML Index

If you have any comments about this server, send e-mail to webmaster@npac.syr.edu.

Page produced by wwwfoil on Sat Nov 28 1998