Learning Processing: A Beginner's Guide to Programming Images ...

Data Streams 365
must be networked locally (via a router or hub, ethernet or wifi ) or on the internet. Th e IP address can be
found in the network settings of your machine.
fi g. 19.5 Examples 19-3, 19-4, and 19-5 all running together
Example 19-4: Client reading values as background color
// Import the net libraries
import processing.net.*;
// Declare a client
Client client;
// The data we will read from the server
int data;
void setup() {
size(200,200);
// Create the Client
client = new Client(this, "127.0.0.1", 5204);
}
void draw() {
if (client.available() > 0) {
data = client.read(); // Read data
}
background(data);
}
The incoming data is used
to color the background.