GeometryPrototypeModel

var Shapes = (function() {
    Object.prototype.extends = function (properties) {
        function f() {};
        var prop;
        f.prototype = Object.create(this);
        for (prop in properties) {
            f.prototype[prop] = properties[prop];
        };
        f.prototype._super = this;
        return new f();
    }

    var shape = {
        init: function init(x1, y1, color) {
            this.x1 = x1;
            this.y1 = y1;
            this.color = color;
            return this;
        },

        toString: function toString() {
            var output = "A[" + this.x1 + ", " + this.y1 + "], " + "color = " + this.color;

            return output;
        }
    };

    var circle = shape.extends({
        init: function init(x1, y1, r, color) {
            this._super.init(x1, y1, color);
            this.radius = r;
            return this;
        },

        toString: function toString() {
            var output = "O[" + this.x1 + ", " + this.y1 + "], radius = " + this.radius + ", color = " + this.color;

            return output;
        }
    });

    var rectangle = shape.extends({
        init: function init(x1, y1, width, height, color) {
            this._super.init(x1, y1, color);
            this.width = width;
            this.height = height;
            return this;
        },

        toString: function toString() {
            var output = "A[" + this.x1 + ", " + this.y1 + "], width = " +
                this.width + ", height = " + this.height + ", color = " + this.color;

            return output;
        }
    });

    var triangle = shape.extends({
        init: function init(x1, y1, x2, y2, x3, y3, color) {
            this._super.init(x1, y1, color);
            this.x2 = x2;
            this.y2 = y2;
            this.x3 = x3;
            this.y3 = y3;
            return this;
        },

        toString: function toString() {
            var output = "A[" + this.x1 + ", " + this.y1 + "], " +
                "B[" + this.x2 + ", " + this.y2 + "], " +
                "C[" + this.x3 + ", " + this.y3 + "], " +
                "color = " + this.color;

            return output;
        }
    });

    var line = shape.extends({
        init: function init(x1, y1, x2, y2, color) {
            this._super.init(x1, y1, color);
            this.x2 = x2;
            this.y2 = y2;
            return this;
        },

        toString: function toString() {
            var output ="A[" + this.x1 + ", " + this.y1 + "], " +
                "B[" + this.x2 + ", " + this.y2 + "], " +
                "color = " + this.color;

            return output;
        }
    });

    var segment = line.extends({
        init: function init(x1, y1, x2, y2, color) {
            this._super.init(x1, y1, x2, y2, color);
            return this;
        },

        toString: function toString() {
            return this._super.toString();
        }
    });

    return {
        shape: shape,
        circle: circle,
        rectangle: rectangle,
        triangle: triangle,
        line: line,
        segment: segment
    }
}());

var l = Object.create(Shapes.line).init(2, 2, 6, 6, "EFEFEF");
console.log(l.toString());
console.log();

var se = Object.create(Shapes.segment).init(7, 7, 12, 12, "123456");
console.log(se.toString());
console.log();