Window Location

LORDTEK

frame.setLocation(333, 444);

I put this line in draw() but gave error as "Exception in thread "Animation Thread" java.lang.NullPointerException"

So?

GoToLoop

It works for me! :)]

PhiLho

Why do you put this in draw(), anyway? No need to repeat this over and over.

LORDTEK

So say me where I must put it in? Do you think that in setup()?

GoToLoop

Placing setLocation() in setup() won`t work b/c the canvas is invisible then.
And only after setup() has finished, Processing takes care of its latest adjustments.
And that includes setLocation(), overriding ours! :O

GoToLoop

In order to avoid redundant repeating calls to setLocation() within draw(),
we can make a thread("") function for the sole purpose to wait & reposition the canvas after it isVisible()!

/**
 * Reposition Canvas (v1.01)
 * by GoToLoop (2014/Apr)
 *
 * forum.processing.org/two/discussion/4712/window-location
 */

static final int WINDOW_X = 300, WINDOW_Y = 400;
static final int FPS = 60, FREQ = (1<<5) - 1;

void setup() {
  size(800, 600, JAVA2D);
  frameRate(FPS);
  smooth(4);

  thread("repositionCanvas");
}

void draw() {
  //if (frameCount % FREQ == 0)
  if ((frameCount & FREQ) == 0)
    background((color) random(#000000));
}

void repositionCanvas() {
  while (!frame.isVisible())  delay(2);
  frame.setLocation(WINDOW_X, WINDOW_Y);
}

LORDTEK

That code and also frame.setLocation(int, int) work in processing. But I try to build my program in eclipse. This code does not work too in eclipse (like also frame.setLocation(int, int) in draw()).

GoToLoop

Just maybe you need to import java.awt.Window; or something like that?
Processing auto-imports a bunch of Java's standard libraries!

http://docs.oracle.com/javase/8/docs/api/java/awt/Window.html#setLocation-int-int-

LORDTEK

    import processing.core.*;
    import java.awt.*;
    import java.applet.*;

    public class WindowLocation extends PApplet {

        public void setup() {
          size(800, 600);
        }

        public void draw() {
          background(random(255), random(255), random(255));
          frame.setLocation(500, 300);
        }
    }

That does not work in eclipse. It means by processing code, it does not seem possible to move it. So I have to focus on classical ways...

GoToLoop

I only know Processing's IDE for now, sorry!
But I wonder where's the main() function in your code? Or perhaps Eclipse takes care of that too? X_X

In case it doesn't, here's another more advanced attempt of mine:

static final void main(String[] args) {
  final String sketch = Thread.currentThread()
    .getStackTrace()[1].getClassName();

  final String[] newArgs = append(args, "--location=500,300");

  PApplet.main(append(newArgs, sketch));
}

PhiLho

I forgot about the need to be in draw() to call this method. But you can call it only once by using a boolean or doing this only at frameCount == 2, for example.