Making Things Talk

408 MAKING THINGS TALK

// serialEvent method is run automatically by the Processing applet

// whenever the buffer reaches the byte value set in the bufferUntil()

// method in the setup():

void serialEvent(Serial myPort) {

// if serialEvent occurs at all, contact with the microcontroller

// has been made:

madeContact = true;

// read the serial buffer:

String myString = myPort.readStringUntil('\n');

// if you got any bytes other than the linefeed:

if (myString != null) {

myString = trim(myString);

// split the string at the commas

//and convert the sections into integers:

int sensors[] = int(split(myString, ','));

// if you received all the sensor strings, use them:

if (sensors.length >= 2) {

vals[0] = sensors[0];

vals[1] = sensors[1];

// send out the serial port to ask for data:

myPort.write('\r');

}

}

}

Chapter 9

Color Recognition Using a Webcam

Language: Processing

Reads an image from a camera and looks for a blob of a

particular color. Click on a color in the image to choose the

color to track.

/import processing.video.*;

Capture myCamera; // instance of the Capture class

color targetColor = color(255,0,0); // the initial color to find

int[] matchingPixel = new int[2]; // matching pixel's coordinate

void setup()

{

// set window size:

size(320, 240);

// List all available capture devices. Macintoshes genera