How to load images while an exported sketch is running?

diogoqueiros

Hi everyone! I'm new to this forum so I should present myself first: I'm Diogo, from Portugal, and I'm a graphic designer. I'm trying to make a sketch that I want to export (for Mac and Windows) to give to a few friends. The basic concept is that you can vectorize an image in a more graphic/abstract way. So I want them to be able to import their own images. I've seen some tips on loading images from a path or url. But I can't use an absolute path, since I'm going to share and export it... Any ideas? Thanks!

calsign

Welcome to the Processing Forum! You can have the user select the input file with selectInput().

diogoqueiros

Thank you! Exactly what I wanted. But I still have one question, if you please. I made the following code to only draw something after the image is loading. Works fine except one thing: Processing crashes when you exit the sketch...

String filePath;
PImage img;
int x = 0;
int y = 0;

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

void draw() {  
  if (x == 0) {
      selectInput("Select a file : ", "fileSelected");
      x++;
  }
  if (filePath != null && y == 0) {
      img = loadImage(filePath);
      image(img, 0, 0);
      y++;
  }
  if (filePath != null) {
      ellipse(mouseX, mouseY, 9, 9);
  }
}

void fileSelected(File selection) {
    if (selection == null) {
    } else {
    filePath = selection.getAbsolutePath();
    }
}

I was trying to use this solution, which is smarter, but it doesn't work.

GoToLoop

I did a more simplified example. Check that out: :bz

// forum.processing.org/two/discussion/3451/
// how-to-load-images-while-an-exported-sketch-is-running

PImage img;
boolean hasRequested;

void setup() {
  size(1280, 1024);
  noLoop();
  imageMode(CENTER);
}

void draw() {
  clear();

  if (hasRequested = !hasRequested)  selectInput("Select an image :", "selected");
  else if (img != null)              image(img, width>>1, height>>1);
}

void selected(File selection) {
  if (selection != null)  img = loadImage(selection.getAbsolutePath());
  else                    exit();

  if (img == null)        hasRequested = false;

  redraw();
}

diogoqueiros

This is exactly what I wanted. Thank you both so much! (And thank you GoToLoop for the extra dancing Bee.) As soon as I get a beta version, I will share it with you. Thanks!