Learning Processing: Chapter 15: Example 15-1: “Hello World” Images

Example

// Learning Processing
// Daniel Shiffman
// http://www.learningprocessing.com

// Example 15-1: "Hello World" images

// Declaring a variable of type PImage, a class available to us from the Processing core library.
PImage img; 

void setup() {
  size(320,240);
  // Make a new instance of a PImage by loading an image file
  img = loadImage("mysummervacation.jpg");
}

void draw() {
  background(0);
   //The image() function displays the image at a location-in this case the point (0,0).
  image(img,0,0);
}

Comments (9)

Groland

It seems important to say explicitly in the text that the image filename extension, “.jpg”, “.png” is required. I wasted some time and got a lot of errors by neglecting to include these extensions.
Anonymous

Great comment, I will include a note for the next edition!
Ken

hi, I follow the instruction, but there is an error. It says “Cannot find anything named img” Could you pls tell how to fix it?
feligallo2002

it’s there cause you are not declaring the PImage variable, so before the void setup you must declare the variable:

PImage img;
void setup
{
….
http://www.facebook.com/anuta.vlad Anuta Vlad

What is PImage? I’m ussing NetBeans and he did not recognize it.”a class available to us from the Processing core library.”.Which library?
Anonymous

A Processing class for images. You probably need an import statement.

import processing.core.*;

http://processing.org/reference/PImage.html
blandit

at img = loadImage(“mysummervacation.jpg”); where is location the mysummervacation.jpg??if i put the image in folder on my hardisk, can i change mysummervacation.jpg with the URL of my image??
Anonymous

Download the example, you’ll see the image goes in the sketch’s “data” folder. You can also use a full path instead.
sarthij10

gfg