How to copy the out canvas image in the screen without saving image file?

newton45

How to copy the out canvas image in the screen without saving image file? I want to edit the image showing in the screen in realtime. Thanks

Chrisir

you can use get()

get(x, y, w, h)

https://www.processing.org/reference/get_.html

PImage c = get( 10,10,30,30 );
image(c, width/2, 0);

not sure if I understood you correctly

newton45

Thank you Chrisir! "get()" can only get the image inside the canvas,but I want to get the image outside the canvas. For example, I want to get the "B" content, not "A" content

GoToLoop

https://forum.Processing.org/two/discussion/15674/speed-of-screenshots#Item_5

https://forum.Processing.org/two/discussions/tagged?Tag=createscreencapture()

kfrajer

Check this code:

Kf

//REFERENCE: https://docs.oracle.com/javase/7/docs/api/java/awt/Robot.html
//REFERENCE: http://stackoverflow.com/questions/4490454/how-to-take-a-screenshot-in-java
//REFERENCE: https://processing.org/reference/PImage_get_.html
//REFERENCE: https://forum.processing.org/two/discussion/9874/how-to-take-control-of-the-mouse-outside-the-sketch-window#latest

import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;



Robot rbt;
boolean loadNow=false;
PImage img;

void setup() {
  size(600,600);

  try {
    rbt = new Robot();
  } 
  catch(Exception e) {
    e.printStackTrace();
  }
}

void draw() {

  if(loadNow==true){
    img=loadImage("screenshot.jpg");
    println(img.width+" "+img.height);
    image(img.get(200,200,600,600),0,0);   //HERE is where you setup the parameters to grab box B as shown in your post.
    loadNow=false;
  }
}

void mouseReleased() {
  BufferedImage image2 = rbt.createScreenCapture(new Rectangle(Toolkit.getDefaultToolkit().getScreenSize()));
  println("Capturing image...");

  try {
    ImageIO.write(image2, "JPG", new File(("screenshot.jpg")));
    println("Saving image...");
    loadNow=true;
  }
  catch (IOException e) {
    e.printStackTrace();
  }
}

newton45

Cool!! Thank you kfrajer!

newton45

Thank you GoToLoop!