press a button replace an image, cp5.

alexijohansen

I'm using cp5 to build a little particle sketch and I need to be able to replace an image from the interface. I have trouble finding out:

• how to open a file requester.
• how to load a new image in to an already existing declared image.

I've been trying the file requester code in 'javax.swing.*' but I don't really understand what I'm doing and although the code should only triggered when a cp5 button is pressed when I compile the sketch and run it the file dialogue shows up when the sketch starts. Tres bizarre.

Any ideas?

hamoid

Hi! Processing already includes a file selector.

PImage myImage;

void setup() {
  size(600, 600);
  println("Click to load a new image");
}
void draw() {
}
void mousePressed() {
  selectInput("Select a file to process:", "fileSelected");
}

void fileSelected(File selection) {
  if (selection == null) {
    println("Window was closed or the user hit cancel.");
  } else {
    String path = selection.getAbsolutePath();
    myImage = loadImage(path);
    image(myImage, 0, 0);
  }
}

You should add file-type checking to avoid trying to load non-image files as images (you could just check that the path ends in ".jpg" for instance).