swiftlyNow

let b=[];
let t=0;
let n=2000;
let r=5;
let bBool=true;
function setup() {
	createCanvas(windowWidth, windowHeight,WEBGL);
	angleMode(DEGREES);
	fill(0)
	noStroke();
	birds();
}
function draw() {
  if(bBool){
    background(255,255,255);
    fill(0,0,0)
  }else{
    background(0,0,0);
    fill(255,255,255)
  }
	orbitControl()
	t=frameCount/3;
	moveBirds();
}

function curveP(){
	beginShape()
	for (let i=0;i<300;i=i+0.25){
		x=i*i/5*sin(25*i);
		z=i*i/5*cos(25*i);
		y=i*5;
		vertex(x,-y,z);
	}
	endShape();
}
function moveBirds(){
  push()
  translate(0,60,0)
  sphere(r,24,24)
  pop()
		for (let i=0;i<n;i++){
			x=b[0][i]*b[0][i]/7*sin(25*b[0][i])//+b[3][i];
			z=b[0][i]*b[0][i]/7*cos(25*b[0][i])//+b[3][i];
			y=b[0][i]*5+b[3][i];
			if(y>-60+r){
				b[0][i]=b[0][i]-0.09*b[1][i]
				b[3][i]=b[3][i]*random(0.96,1.04)
			}else{
				b[0][i]=180
				b[3][i]=int(random(-10,10))
        r=r+0.5
			}
			push()
			translate(x,-y,z);
			sphere(2,3,3)
			pop()
		}
  if (r>width/2){
    bBool=!bBool
    r=5
    birds()
  }
}

function birds(){
	b[0]=[]
	b[1]=[]
	b[3]=[]
	for(let i=0;i<n;i++){
		b[3][i]=(random(-40,20))
		b[1][i]=random(0.85,1.15)
		b[0][i]=(random(80,180))+b[3][i];
	}
}