print the filename and path of an image

chrios1001

Is it possible to display the filename and the path of an image that has been loaded in setup? I tried to just print the image variable - I get this: "processing.core.PImage@28b301f2"

PImage img;  // Declare variable "a" of type PImage

void setup() {
  size(640, 360);
  img = loadImage("moonwalk.jpg");  // Load the image into the program  
}

void draw() {
  image(img, 0, 0);
  println(img);// try to print the image filename (and maybe it's path?)
}

calsign

AFAIK, there is no way to check the path of a PImage after it has been loaded. The best that you can do is store the path in a global variable:

PImage img;  // Declare variable of type PImage
final String imgFilename = "moonwalk.jpg"; // The path to the image

void setup() {
  size(640, 360);
  img = loadImage(imgFilename);  // Load the image into the program  
}

void draw() {
  image(img, 0, 0);
  println(imgFilename);// Print the filename
}

Of course, this probably isn't anything like what you want. Depending on your needs, you could create a separate set of Strings that contain the filenames of corresponding PImages, or, perhaps, you could create a wrapper class that stores the PImage and the filename:

SmartPImage img;  // Declare variable of type SmartPImage

void setup() {
  size(640, 360);
  img = new SmartPImage("moonlight.jpg");  // Load the image into the program  
}

void draw() {
  image(img.img, 0, 0);
  println(img.filename);// Print the filename
}

class SmartPImage {
  PImage img;
  String filename;

  SmartPImage(String filename) {
    //Load the image and set the filename
    this.filename = filename;
    img = loadImage(filename);
  }
}

chrios1001

Thanks Calsign, I had searched far and wide for something built in. I think your method could be useful.

there is one typo in the class that stops it running: I changed "class SmartPIamge" to: "class SmartPImage"

I guess the typo is proof you wrote that in your head, rather than my more mortal way of using the ide and trial and error :)

cheers!

chrios1001

For anyone else watching: change "string" to "String" and "imgPath" to "imgFilename" to get your Calsign's first example to work.

calsign

Indeed, it appears that I am a bit careless today. This is what happens when I don't test the code before posting... it should be all fixed, now.