# noise( )

Example using [Processing noise( )](https://processing.org/reference/noise_.html) function in comparison to using random( )

```java
//Noise example, input is a continuously increasing value - like framecount
//noise output is a value between 0.0-1.0, here we multiply it by height to give 
//a value for n that is between 0-height.
//Here, the origin is translated each frame to an x position with value of frameCount
//the y value for the red dot is set by the noise
//the y value for the blue dot is random

void draw() {
  frameRate( 10);
  noStroke();
  if ( frameCount < width) { //only execute while in window
    translate( frameCount, 0);
    float n = noise(frameCount * 0.1) * height;  //get a noisy y value
    fill( 255, 255, 0, 50);
    for ( int i=0; i< height; i+=5) {  //increment i by 5
      ellipse( 0, i, 5, 5); //draw a yellow ellipse at y value of i 
    } //end for
    fill( 255, 0, 0);
    ellipse( 0, n, 8, 8); //noisy y value - red dot
    fill(0, 200, 255);
    float randY = random( 5, height-5); //set y randomly within range of height
    ellipse( 0, randY, 4, 4); //blue dot - random y
  }
}

```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://kdoore.gitbook.io/cs1335/project-1/programmatic-variations-in-color/noise.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.