var Shape = require('./Shape');

module.exports = Line;

/**
 * Line shape class. The line shape is along the x direction, and stretches from [-length/2, 0] to [length/2,0].
 * @class Line
 * @extends {Shape}
 * @constructor
 */
function Line(length){

    /**
    * Length of this line
    * @property length
    * @type {Number}
    */
    this.length = length;

    Shape.call(this,Shape.LINE);
};
Line.prototype = new Shape();
Line.prototype.computeMomentOfInertia = function(mass){
    return mass * Math.pow(this.length,2) / 12;
};

Line.prototype.updateBoundingRadius = function(){
    this.boundingRadius = this.length/2;
};