This example is for Processing 3+. If you have a previous version, use the examples included with your software. If you see any errors or have suggestions, please let us know.
Create Image.
The createImage() function provides a fresh buffer of pixels to play with. This example creates an image gradient.
PImage img; void setup() { size(640, 360); img = createImage(230, 230, ARGB); for(int i = 0; i < img.pixels.length; i++) { float a = map(i, 0, img.pixels.length, 255, 0); img.pixels[i] = color(0, 153, 204, a); } } void draw() { background(0); image(img, 90, 80); image(img, mouseX-img.width/2, mouseY-img.height/2); }