class TubeDrawObject
{
    #tube;

    constructor(_x, _y, _tube, _scale)
    {
        this.x = _x;
        this.y = _y;
        this.scale = _scale;
        this.#tube = _tube;
    }

    get height()
    {
        return this.scale * this.#tube.height();
    }

    get width()
    {
        return this.scale;
    }

    draw()
	{
		for (let layerIndex = 0; layerIndex < this.#tube.height(); layerIndex++)
        {
            let color = this.#tube.getColorAtLevel(layerIndex);
            color == null ? noFill() : fill(color);

            let layerY = this.y + (this.#tube.height()-layerIndex-1) * this.scale;

            if (layerIndex == 0) this.#drawTubeBottom(this.x, layerY, this.scale);
            else this.#drawTubeLayer(this.x, layerY, this.scale)
        }
	}

    #drawTubeLayer(_x, _y, _scale)
    {
        noStroke();
        rect(_x, _y, _scale);

        stroke('black');
		strokeWeight(2);
        line(_x, _y, _x, _y + _scale);
        line(_x + _scale, _y, _x + _scale, _y + _scale);
    }

    #drawTubeBottom(_x, _y, _scale)
    {
        noStroke();
        rect(_x, _y, _scale, _scale/2);

        stroke('black');
        line(_x, _y, _x, _y + _scale/2);
        line(_x + _scale, _y, _x + _scale, _y + _scale/2);
        arc(_x + _scale/2, _y + _scale/2, _scale, _scale, 0, PI);
    }

    inbounds(_x, _y)
    {
        return _x > this.x && _x < this.x + this.width
            && _y > this.y && _y < this.y + this.height;
    }
}