# "Rainbow" line; Running through colors
**URL:** https://discourse.processing.org/t/rainbow-line-running-through-colors/4777
**Category:** Gallery
**Created:** [October 23, 2018, 1:23pm UTC](https://discourse.processing.org/t/rainbow-line-running-through-colors/4777 "2018-10-23T13:23:54Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Elrond\_void](https://discourse.processing.org/u/Elrond_void)
#### Post date: [October 23, 2018, 1:23pm UTC](https://discourse.processing.org/t/rainbow-line-running-through-colors/4777/1 "2018-10-23T13:23:54Z")
I recently created a double pendulum and wanted to make the tracing line run through all the colors, I looked around and couldn’t find anything that did what I wanted so I made my own.
```auto
float h = 0;
float x = 0;
void setup(){
size(500, 500);
background(0);
colorMode(HSB, 360, 360, 360);
}
void draw(){
if (h > 360){
h = 0;
}
h += 2;
strokeWeight(4);
stroke(h, 360, 360);
point(x, height/2);
x += 1;
}
```
This is what I came up with, hope this helps anyone looking for a similar thing.
Archie Wright.
---
### Author:  [@TheWizardBear](https://discourse.processing.org/u/TheWizardBear)
#### Post date: [October 23, 2018, 4:06pm UTC](https://discourse.processing.org/t/rainbow-line-running-through-colors/4777/2 "2018-10-23T16:06:07Z")
Could you format your code with the \ button please, and make sure it is properly indented by pressing ctrl + T in the processing editor?
---
### Author:  [@Elrond\_void](https://discourse.processing.org/u/Elrond_void)
#### Post date: [October 23, 2018, 7:41pm UTC](https://discourse.processing.org/t/rainbow-line-running-through-colors/4777/3 "2018-10-23T19:41:10Z")
Done, thanks for the heads up.