export abstract class Shape {

    abstract move(x, y);

    abstract scale(n, anchorX, anchorY);

}

export class Rectangle extends Shape {

    public static from({ x, y, width, height })  {
        return new Rectangle({
            top: y,
            left: x,
            right: x + width,
            bottom: y + height
        });
    }

    public readonly left: number;
    public readonly top: number;
    public readonly right: number;
    public readonly bottom: number;

    constructor({
        top,
        left,
        right,
        bottom,
        anchorX = 0,
        anchorY = 0
    }
    ) {
        super();
        this.top = top;
        this.right = right;
        this.bottom = bottom;
        this.left = left;
        // console.log({ top, left, right, bottom });
    }

    move(tx: any, ty: any) {
        let { top , left, right, bottom } = this;
        top += ty;
        bottom += ty;
        right += tx;
        left += tx;
        return new Rectangle({
            top, left, right, bottom
        })
    }
    scale(s: any, anchorX = 0, anchorY = 0) {
        // move to anchor...
        if (anchorX === 0 && anchorY === 0) {
            let { top , left, right, bottom } = this;
            top *= s;
            left *= s;
            right *= s;
            bottom *= s;
            return new Rectangle({
                top, left,right,bottom
            });
        }

        return this.move(-anchorX, -anchorY)
            .scale(s)
            .move(anchorX, anchorY);
    }

}