HTTP/2 200 date: Sat, 11 Oct 2025 10:31:05 GMT content-type: text/html server: cloudflare last-modified: Thu, 28 Oct 2010 14:02:44 GMT cf-cache-status: DYNAMIC vary: Accept-Encoding nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800} report-to: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=23cmFxOPa%2BM84NcPUpOH5i5bM9hOl%2FThJ%2B7pUloNb5yRLE7eUA62HXAwCWPukR%2FcEPnQSBUx4xF0VmH5Oc4OW394k4IFys1JkFXob9w%3D"}]} content-encoding: gzip cf-ray: 98cdaf9188a148ec-BOM alt-svc: h3=":443"; ma=86400

Processing.js

NoiseWave

by Daniel Shiffman. Using Perlin Noise to generate a wave-like pattern.

Original Processing.org Example: NoiseWave

// All Examples Written by Casey Reas and Ben Fry
// unless otherwise stated.
int xspacing = 8;   // How far apart should each horizontal location be spaced
int w;              // Width of entire wave
float yoff = 0.0f;        // 2nd dimension of perlin noise
float[] yvalues;          // Using an array to store height values for the wave (not entirely necessary)
void setup() {
  size(200,200);
  frameRate(30);
  colorMode(RGB,255,255,255,100);
  smooth();
  w = width+16;
  yvalues = new float[w/xspacing];
}
void draw() {
  background(0);
  calcWave();
  renderWave();
}
void calcWave() {
  float dx = 0.05f;
  float dy = 0.01f;
  float amplitude = 100.0f;
  // Increment y ('time')
  yoff += dy;
  //float xoff = 0.0;  // Option #1
  float xoff = yoff; // Option #2
  for (int i = 0; i < yvalues.length; i++) {
    // Using 2D noise function
    //yvalues[i] = (2*noise(xoff,yoff)-1)*amplitude; // Option #1
    // Using 1D noise function
    yvalues[i] = (2*noise(xoff)-1)*amplitude;    // Option #2
    xoff+=dx;
  }
}
void renderWave() {
  // A simple way to draw the wave with an ellipse at each location
  for (int x = 0; x < yvalues.length; x++) {
    noStroke();
    fill(255,50);
    ellipseMode(CENTER);
    ellipse(x*xspacing,width/2+yvalues[x],16,16);
  }
}