loadPixels() / Reference / Processing.org

Name

loadPixels()

Description

Loads the pixel data of the current display window into the pixels[] array. This function must always be called before reading from or writing to pixels[]. Subsequent changes to the display window will not be reflected in pixels until loadPixels() is called again.

Examples

```
size(400,400);
int halfImage = width*height/2;
PImage myImage = loadImage("mt-fuji.jpg");
image(myImage, 0, 0);

loadPixels();
for (int i = 0; i < halfImage; i++) {
  pixels[i+halfImage] = pixels[i];
}
updatePixels();
```