updatePixels() / Reference / Processing.org

Name

updatePixels()

Class

PImage

Description

Updates the display window with the data in the pixels[] array. Use in conjunction with loadPixels(). If you're only reading pixels from the array, there's no need to call updatePixels() — updating is only necessary to apply changes.

Examples

```
PImage myImage;
int halfImage;

void setup() {
  size(400, 400);
  halfImage = width * height/2;
  myImage = loadImage("shells.jpg");
  myImage.loadPixels();
  for (int i = 0; i < halfImage; i++) {
    myImage.pixels[i+halfImage] = myImage.pixels[i];
  }
  myImage.updatePixels();
}

void draw() {
  image(myImage, 0, 0);
}
```

Syntax

pimg.updatePixels()
pimg.updatePixels(x, y, w, h)

Parameters

pimg(PImage) any object of type PImage
x(int)x-coordinate of the upper-left corner
y(int)y-coordinate of the upper-left corner
w(int)width
h(int)height

Return

void

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