# How to make particles with tails on the picture
**URL:** https://discourse.processing.org/t/how-to-make-particles-with-tails-on-the-picture/24941
**Category:** Coding Questions
**Tags:** homework
**Created:** [October 27, 2020, 8:56am UTC](https://discourse.processing.org/t/how-to-make-particles-with-tails-on-the-picture/24941 "2020-10-27T08:56:37Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@AbleYudada](https://discourse.processing.org/u/AbleYudada)
#### Post date: [October 27, 2020, 8:56am UTC](https://discourse.processing.org/t/how-to-make-particles-with-tails-on-the-picture/24941/1 "2020-10-27T08:56:37Z")
Hi. I want to know how to make particles with tails on the picture? I try to do this. But it not work. 😖
---
### Author:  [@paulgoux](https://discourse.processing.org/u/paulgoux)
#### Post date: [October 27, 2020, 1:52pm UTC](https://discourse.processing.org/t/how-to-make-particles-with-tails-on-the-picture/24941/2 "2020-10-27T13:52:49Z")
searching on google should help you find what you are looking for. This is just one way of doing it.
```auto
int i = 0;
void setup(){
size(500,500);
smooth();
noStroke();
background(255);
}
void draw(){
fill(255,25);
rect(0,0,width,height);
fill(0);
ellipse(width/2 + i,height/2 + i,50,50);
delay(100);
i+=10;
}
```
take a look at the examples provided in the processing ide there is an example of how to make trails like this one, I just cant remember the name of it. Alternatively you would have to create an array or arraylist of a certain size to store the positions of whatever you are drawing and use the array to draw the shape you want.
---
### Author:  [@Chrisir](https://discourse.processing.org/u/Chrisir)
#### Post date: [October 27, 2020, 1:54pm UTC](https://discourse.processing.org/t/how-to-make-particles-with-tails-on-the-picture/24941/3 "2020-10-27T13:54:35Z")
I agree. Your question is too broad. We don’t know whether they are birds or from a firework or fountain
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### Author:  [@AbleYudada](https://discourse.processing.org/u/AbleYudada)
#### Post date: [November 24, 2020, 4:16am UTC](https://discourse.processing.org/t/how-to-make-particles-with-tails-on-the-picture/24941/4 "2020-11-24T04:16:20Z")
Thanks bro! I got it.
---
### Author:  [@AbleYudada](https://discourse.processing.org/u/AbleYudada)
#### Post date: [November 24, 2020, 4:23am UTC](https://discourse.processing.org/t/how-to-make-particles-with-tails-on-the-picture/24941/5 "2020-11-24T04:23:18Z")
```auto
/**
* Transparency.
*
* Move the pointer left and right across the image to change
* its position. This program overlays one image over another
* by modifying the alpha value of the image with the tint() function.
*/
PImage img;
float offset = 0;
float easing = 0.05;
void setup() {
size(640, 360);
img = loadImage("moonwalk.jpg"); // Load an image into the program
}
void draw() {
if(frameCount%5 == 0)
{
fill(255,25);
rect(0,0,width,height);
}
println(frameRate);
image(img, mouseX, mouseY,50,50); // Display at full opacity
//float dx = (mouseX-img.width/2) - offset;
// offset += dx * easing;
//tint(255, 127); // Display at half opacity
// image(img, offset, 0);
}
```
I changed some codes and this is the effect I want
---
### Author:  [@Chrisir](https://discourse.processing.org/u/Chrisir)
#### Post date: [November 24, 2020, 8:46am UTC](https://discourse.processing.org/t/how-to-make-particles-with-tails-on-the-picture/24941/6 "2020-11-24T08:46:22Z")
So, is this solved now?
Congratulations!