class Star extends Decoration{

    raysCount: number
    triangles: p5.Vector[][]
    innerRadius: number


    constructor(properties: object){
        super(properties);
        this.createTriangles();
    }

    get properties(): object{
        let obj = super.properties;
        obj['raysCount'] = this.raysCount;
        obj['innerRadius'] = this.innerRadius;
        return obj;
    }

    createTriangles(){
        this.triangles = [];
        let increment = p.TWO_PI / this.raysCount / 2,
            firstOuter = true;
        for (let i = 0; i < p.TWO_PI; i += increment){
            let x1 = p.sin(i),
                y1 = -p.cos(i),
                x2 = p.sin(i + increment),
                y2 = -p.cos(i + increment);
            if (firstOuter){
                x1 *= this.radius,
                y1 *= this.radius,
                x2 *= this.innerRadius,
                y2 *= this.innerRadius;
            } else {
                x2 *= this.radius,
                y2 *= this.radius,
                x1 *= this.innerRadius,
                y1 *= this.innerRadius;
            }
            firstOuter = !firstOuter;
            this.triangles.push([
                p.createVector(x1, y1),
                p.createVector(x2, y2),
                p.createVector(0, 0)
            ]);
        }
    }

    brightness(value: number) {
        this.triangles.forEach((t, i) => {
            p.fill(0, 0, 0, value);
            p.triangle(t[0].x, t[0].y, t[1].x, t[1].y, t[2].x, t[2].y);
        });
    }

    display(pos?: p5.Vector, dim?: p5.Vector){
        super.display(pos, dim);

        p.noStroke();

        this.triangles.forEach((t, i) => {
            let color = this.colors[i % this.colors.length];
            p.fill(color);
            p.triangle(t[0].x, t[0].y, t[1].x, t[1].y, t[2].x, t[2].y);
        });
        if (this.mouseIsOver){
            this.brightness(70);
        }

        p.pop();
    }

    update(){
        super.update();
    }

    toJSON(index){
        let list = [
            "raysCount",
            "innerRadius"
        ]
        let obj = super.toJSON(index);
        for (let item of list){
            obj[item] = this[item];
        }
        return obj;
    }

}