How can I change WCircleMenu options when scrolling down using jquery.fullPage

Question

I have this code: http://jsfiddle.net/hevercking/t0qxavfc/

when you click the "&"; buttons, social network links appear at the top of the button, using the WCircleMenu effect, when someone goes through the bar menu, the jquery.fullPage effect appears, since everything works fine here, but now I want to change the angle_start to 180º to display on the oter page, because what if I click the button on the otter page, the social buttons appear on the other side, I tried to make some changes, but everything stops working, can someone help me do this?

this is my js code

$(document).ready(function() {
//FULL PAGE CODE
$('#fullpage').fullpage({
    verticalCentered: false,

    onLeave: function(index, nextIndex, direction){
        //leaving 1st section
        if(index == 1){
            $('.barra').addClass('fixed');
        }
        //back to the 1st section
        if(nextIndex == 1){
            $('.barra').removeClass('fixed');
            pag = 'nextIndex';
        }
    },

    afterResize: function(){
        windowsHeight = $(window).height();
    }
});
//END FULL PAGE CODE

//WCircleMenu config
$(document).ready(function(){
    $('#my-menu').WCircleMenu({
        angle_start : -Math.PI/1.371,
        delay: 50,
        distance: 100,
        angle_interval: Math.PI/6.5,
        easingFuncShow:"easeOutBack",
        easingFuncHide:"easeInBack",
        step:15,
        openCallback:true,
        closeCallback:true,
        itemRotation:360,
        iconRotation:180,
    });
});
//End WCircleMenu config});

Answer 1

$(document).ready(function() {
            $('#fullpage').fullpage({
                verticalCentered: false,

                onLeave: function(index, nextIndex, direction){
                    //leaving 1st section
                    if(index == 1){
                       $('.barra').addClass('fixed');
                        $('#my-menu').WCircleMenu({angle_start : Math.PI/4.371});
                    }
                    //back to the 1st section
                    if(nextIndex == 1){
                        $('.barra').removeClass('fixed');
                        pag = 'nextIndex';
                        $('#my-menu').WCircleMenu({angle_start : -Math.PI/1.371});
                    }
                },

                afterResize: function(){
                    windowsHeight = $(window).height();
                }

                //to avoid problems with css3 transforms and fixed elements in Chrome, as detailed here: https://github.com/alvarotrigo/fullPage.js/issues/208
                //css3:false
            });


        });