# OOP P5.js Artwork

Design Concept

This project portrays that in a box, there are various balls flying around and another rather distinctive ball floating inside. Every other ball experiences a force when approaching the yellow ball in the center. No matter how the yellow ball moves, other balls are driven away from it. My original intention is to remind people that there are bright spots in people, even if most reject or isolate them. However, it is also open to other interpretations since it only vaguely represents my intent.

Code I am Proud of

I am proud of the part where I implemented the particle effects of the balls traveling around. Originally, I wanted to implement an algorithm that makes the particles fly out in a certain cone range behind the ball. However, the effects are rather unsatisfactory. The particles fly out sequentially in an over-orderly manner. It was almost like the particles were in a line when the range of the cone was too narrow. Then I thought of the movements the balls are making. If the ball is moving, perhaps I could make the particles fly in all directions instead of only in a cone behind the ball. It will still form a coned trail as long as the particles have less velocity than the ball. The particles with the same direction as the ball will have less relative speed to the ball. Therefore, it will disappear close to the ball, and vice versa. This makes the trail look more chaotic and more like a trail instead of a projector.

```class Particle{
//xyz be the coordinates of the ball
//dir is random plus direction of the ball
constructor(x,y,z,dir){
this.x=x;
this.y=y;
this.z=z;
this.r=random(255);
this.g=random(255);
this.b=random(255);
//Generate random cold color
if(this.r>this.b){
this.clr=color(this.b,this.g,this.r);
}
else{
this.clr=color(this.r,this.g,this.b);
}
this.opacity=0.5;
}

//Displaying color
display(){
push();
if(this.r>this.b){
this.clr=color(this.b,this.g,this.r,this.opacity*255);
}
else{
this.clr=color(this.r,this.g,this.b,this.opacity*255);
}
stroke(this.clr);
translate(this.x,this.y,this.z);
sphere(3);
pop();
}

//Movement and change in opacity
updateLocation(){
this.x=this.x+0.5*this.direction.x;
this.y=this.y+0.5*this.direction.y;
this.z=this.z+0.5*this.direction.z;
this.opacity-=0.015;
}
}
```

Improvements

I wanted to do lighting on the balls, especially the central ball. However, I cannot understand the usage of shaders or other methods that can imitate lighting and light halos. Therefore, this project is not yet complete, and it should have lighting effects to indicate the size of the repulsion field of the central ball. Without the lighting, the theme that “even the most isolated people shine” becomes not obvious.