let a; 

let b;

​

function setup() {

    createCanvas(windowWidth, windowHeight);

    let c = color(random(colors));

    c.setAlpha(40);

    background(c); 

}

​

function draw() {

    let x = random(0,150);

    let y = random(0,200); //x and y control the vector’s length

    let h = random(70,80); //h is alpha

    drawLines(mouseX,mouseY,x,y,h);

}

​

function drawLines(a,b,x,y,h) {

    push();

    translate(a, b);

    v = p5.Vector.random2D();

    v.mult(random(x, y));  

​

    strokeWeight(4);

    let c = color(random(colors));

    c.setAlpha(random(0, h));

    stroke(c);

    line(0, 0, v.x, v.y);

    pop();

}

​