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107 lines
2.8 KiB
107 lines
2.8 KiB
5 years ago
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/**
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* (./) udp.pde - how to use UDP library as unicast connection
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* (cc) 2006, Cousot stephane for The Atelier Hypermedia
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* (->) http://hypermedia.loeil.org/processing/
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*
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* Create a communication between Processing<->Pure Data @ http://puredata.info/
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* This program also requires to run a small program on Pd to exchange data
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* (hum!!! for a complete experimentation), you can find the related Pd patch
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* at http://hypermedia.loeil.org/processing/udp.pd
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*
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* -- note that all Pd input/output messages are completed with the characters
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* ";\n". Don't refer to this notation for a normal use. --
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*/
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// import UDP library
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import hypermedia.net.*;
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import java.util.*;
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Deque<String> d = new ArrayDeque<String>();
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String myString;
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float x,y,angle;
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float num;
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float num2;
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UDP udp; // define the UDP object
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/**
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* init
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*/
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void setup() {
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size(820, 820);
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noSmooth();
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background(0);
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translate(410, 410);
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stroke(255);
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strokeWeight(3);
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// create a new datagram connection on port 6000
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// and wait for incomming message
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udp = new UDP( this, 6000 );
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//udp.log( true ); // <-- printout the connection activity
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udp.listen( true );
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}
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//process events
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void draw() {
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if (!d.isEmpty()) {
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String[] q = splitTokens(d.pop(), ",");
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num=float(q[0]); // Converts and prints float
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num2 = float(q[1]); // Converts and prints float
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//Pass from polars to cartesians adna dd 410 to be in the middle of the 820 by 820 screen.
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angle = num * 0.0174533;
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x = (sin(angle)*num2 + 410);
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y = (cos(angle)*num2 + 410);
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}
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if(num == 0 )
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{
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background(0);
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translate(410, 410);
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}
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point(x, y);
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}
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/**
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* on key pressed event:
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* send the current key value over the network
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*/
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void keyPressed() {
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String message = str( key ); // the message to send
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String ip = "localhost"; // the remote IP address
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int port = 6100; // the destination port
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// formats the message for Pd
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message = message+";\n";
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// send the message
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udp.send( message, ip, port );
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}
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/**
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* To perform any action on datagram reception, you need to implement this
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* handler in your code. This method will be automatically called by the UDP
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* object each time he receive a nonnull message.
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* By default, this method have just one argument (the received message as
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* byte[] array), but in addition, two arguments (representing in order the
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* sender IP address and his port) can be set like below.
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*/
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// void receive( byte[] data ) { // <-- default handler
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void receive( byte[] data, String ip, int port ) { // <-- extended handler
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// get the "real" message =
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// forget the ";\n" at the end <-- !!! only for a communication with Pd !!!
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data = subset(data, 0, data.length);
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String message = new String( data );
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d.add(message);
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// print the result
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}
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