HI,

I am completely new to processing. I am working on making an interactive projection and I need to have a live feed video camera capture stills of the viewers participating in the projection. A really generous individual was kind enough to send me the code (see below) which allows me to accomplish this- it works perfectly but it is necessary to press the 's' key to capture the image. I am wondering if there is any way to have the image capture happen at a set time interval instead? That way the viewer wouldn't have to press any keys to have the image capture happen. If anyone could take a look and give me any suggestions or help me out with this I would really appreciate it.

Thanks much,
mbvcloud

the code:

import processing.video.*;
import javax.swing.*;

//--change these settings if you wish
int w = 640;
int h = 480;

String folder = "/Users/" + System.getProperty("user.name") + "/Desktop/timeLapse4Md8";


//--do not touch after that
Capture cam;
NumberFormat nf = NumberFormat.getInstance();
JFileChooser fc;

int count = 0;
String num;

PImage overlay;
boolean showOverlay = false;
boolean overlayState = false;
boolean saveProcess = false;

//--setup
void setup() {
  size(w, h);

  cam = new Capture(this, w, h);

  //--manage saved files
  fc = new JFileChooser();
  fc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
  int returnVal = fc.showOpenDialog(this);
  if (returnVal == JFileChooser.APPROVE_OPTION) {
    File file = fc.getSelectedFile();
    folder = file.getAbsolutePath();
  }
 
  File dir = new File(folder);

  if (dir.exists()) {
    String[] allFiles = dir.list();
    count = allFiles.length;
  }
  else {
    if (dir.mkdir()) println("Directory created");
  }

  num = formatCount(count-1);
}

//--draw
void draw() {
  if (cam.available()) {
    cam.read();
    image(cam, 0, 0);
  }

  if (showOverlay) {
    blend(overlay, 0, 0, w, h, 0, 0, w, h, ADD);
  }

  if (saveProcess) saveImage();
}

//--key events
void keyPressed() {
  if (key == 's') saveProcess();
  else if (key == 'l') toggleOverlayImage();
  else if (key == 'c') camSettings();
}

//--other functions
//--run saving process and check if overlay has to be hidden
void saveProcess() {
  overlayState = showOverlay;
  showOverlay = false;
  saveProcess = true;
}

//--save frame
void saveImage() {
  num = formatCount(count);
  saveFrame(folder + "/timeLapse-" + num + ".jpg");
  //println("Frame # " + num + " saved"); 
  count++;

  saveProcess = false;
  if (overlayState) toggleOverlayImage();
}

//--format the file number with 5 digits
String formatCount(int num) {
  nf.setMinimumIntegerDigits(5);
  nf.setMaximumIntegerDigits(5);
  nf.setGroupingUsed(false);
  return nf.format(num);
}

//--reload and overlay the last image to be captured
void toggleOverlayImage() {
  if (count > 0) {
    if (!showOverlay) overlay = loadImage(folder + "/timeLapse-" + num + ".jpg");
    if (showOverlay) showOverlay = false;
    else showOverlay = true;
  }
}

//--display camera preferences
void camSettings() {
  cam.settings();
}