# How to leave some things "untouched" by resetting the background

**URL:** https://discourse.processing.org/t/how-to-leave-some-things-untouched-by-resetting-the-background/43368
**Category:** Coding Questions
**Created:** [December 2, 2023, 2:00am UTC](https://discourse.processing.org/t/how-to-leave-some-things-untouched-by-resetting-the-background/43368 "2023-12-02T02:00:33Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![c0depie](https://avatars.discourse-cdn.com/v4/letter/c/ebca7d/32.png) [@c0depie](https://discourse.processing.org/u/c0depie)
#### Post date: [December 2, 2023, 2:00am UTC](https://discourse.processing.org/t/how-to-leave-some-things-untouched-by-resetting-the-background/43368/1 "2023-12-02T02:00:33Z")

</div>

## essentially what I want is for the outer line to place a dot at the tip every frame, but without the background over lapping the previous dots

static float GOLD = 1.618;

void setup() {  
fullScreen(P2D);  
frameRate(2000);  
}

float ang1 = 0;  
float ang2 = 0;  
float ang3 = 0;  
int s = 100;  
static float e = 2.71828;

void draw() {

```
ang1++;
ang2++;
ang3 = ang3 + GOLD / e;

pushMatrix();
translate(width / 2, height / 2);
rotate(radians(ang1));
line(0, 0, 0, s);
popMatrix();

pushMatrix();
translate(width / 2, height / 2);
rotate(radians(ang2));
translate(0, s);
rotate(radians(ang3));
line(0, 0, 0, s);

line(0, s - 3, 0, s);
popMatrix();

```

}

---

<div class="post-metadata">

### Author: ![c0depie](https://avatars.discourse-cdn.com/v4/letter/c/ebca7d/32.png) [@c0depie](https://discourse.processing.org/u/c0depie)
#### Post date: [December 2, 2023, 2:08am UTC](https://discourse.processing.org/t/how-to-leave-some-things-untouched-by-resetting-the-background/43368/2 "2023-12-02T02:08:10Z")

</div>

I cant figure out if I can use a vector to display each dot because there’s absolutely no x or y variables other then the alignment.