var Point3D = function (a,b,c) {
	var that= {};
	that.x = a;
	that.y = b;
	that.z =c;
      that.name= Point("x(O)+("+a+")*(x(X)-x(O))+("+b+")*(x(Y)-x(O))+("+c+")*(x(Z)-x(O))","y(O)+("+a+")*(y(X)-y(O))+("+b+")*(y(Y)-y(O))+("+c+")*(y(Z)-y(O))");
	
	that.getX3D = function () {
		return that.x;
	}
	that.getY3D = function () {
		return that.y;
	}
	that.getZ3D = function () {
		return that.z;
	}
	that.getName2D = function () {
		return that.name;
	}
	
	return that;
};