Fixing mouse position to window center

Processing Coding Questions
1

Is it possible to set the cursor position to the center (or anywhere else) of the screen? Similar to how games hide the cursor and don’t let it escape the window.

Context:
I’m making a 3D scene, and want the camera to follow the mouse as the user moves it.
I’m also not against tapping into OpenGL if needed.

1 Like
2

Yes, by using the Java Robot class:
https://forum.processing.org/one/topic/lock-the-cursor-in-the-window.html
https://docs.oracle.com/javase/6/docs/api/java/awt/Robot.html

Example code:

import java.awt.Robot;

Robot robot;

void setup () {
  size(600, 600);
  try {
    robot = new Robot();
  } 
  catch (Throwable e) {
  }
}

void draw() {
  robot.mouseMove(width/2, height/2);
}
1 Like
3

Robot and OpenGL (JOGL) can be unhappy bedfellows. Check out Problem with robot cursor for an alternative using JOGL’s support directly.

EDIT - or possibly this thread is more useful - Extending the mouse range past the screen size

2 Likes
4

Tanks for the help! I’ll give a more detailed answer and followup when I’ve done some research, around next Tuesday.