class Heart{

    constructor(x, y){
        this.pos = createVector(x, y);
        this.pulse = 0;
        this.size = random(50, 200);
    }

    update(){
        this.pulse += 0.1;
        this.pulseValue = 1 + 0.03 * sin(this.pulse);
    }

    show(){

        function heart(x, size){
            return size * sqrt(1 - abs(x) / size);
        }

        push();
        translate(this.pos.x, this.pos.y);
        scale(this.pulseValue);
        fill(255, 0, 0, 80);
        noStroke();

        arc(this.size / 4, 0, this.size / 2, this.size / 2, PI, TWO_PI);
        arc(-this.size / 4, 0, this.size / 2, this.size / 2, PI, TWO_PI);

        beginShape();
        vertex(-this.size / 2, 0);
        
        for (let x = -this.size / 2; x < this.size / 2; x++){
            vertex(x, heart(x, this.size / 2));
        }

        vertex(this.size / 2, 0);
        endShape();

        pop();
    }

}