Pie Chart With Hover

HTML

<canvas id="canvaspiechart" width="300" height="300"></canvas>
<div id="result">hmm</div>

JavaScript

canvas = document.getElementById('canvaspiechart'); 
ctx = canvas.getContext('2d'); 
 
var cx = 150; 
var cy = 150; 
var sectorsarray = [];
 
function toRadians(deg) { 
return deg * Math.PI / 180 
} 
 
function drawpiechart() { 
 
ctx.fillStyle='#fdbb30'; 
ctx.beginPath(); 
ctx.moveTo(cx,cy); 
ctx.arc(cx,cy,125,0,toRadians(65.4545454545)); 
ctx.lineTo(cx,cy); 
ctx.closePath(); 
ctx.fill();  
    
    var yellow = {
		start : 0,
		end : toRadians(65.4545454545),
		name : "yellow"
	};
	sectorsarray.push(yellow);
 
ctx.fillStyle='#0087dc'; 
ctx.beginPath(); 
ctx.moveTo(cx,cy); 
ctx.arc(cx,cy,125,toRadians(65.4545454545),toRadians(98.1818181818)); 
ctx.lineTo(cx,cy); 
ctx.closePath(); 
ctx.fill();  
    
var blue = {
		start : toRadians(65.4545454545),
		end : toRadians(98.1818181818),
		name : "blue"
	};
	sectorsarray.push(blue);
 
ctx.fillStyle='#EEEEEE'; 
ctx.beginPath(); 
ctx.moveTo(cx,cy); 
ctx.arc(cx,cy,125,toRadians(98.1818181818),toRadians(360)); 
ctx.lineTo(cx,cy); 
ctx.closePath(); 
ctx.fill();
    
var grey = {
    start : toRadians(98.1818181818),
    end : toRadians(360),
    name : "grey"
};
sectorsarray.push(grey);

}

drawpiechart()

function isInsideSector(point, center, radius, angle1, angle2) {
  function areClockwise(center, radius, angle, point2) {
    var point1 = {
      x : (center.x + radius) * Math.cos(angle),
      y : (center.y + radius) * Math.sin(angle)
    };
    return -point1.x*point2.y + point1.y*point2.x > 0;
  }

  var relPoint = {
    x: point.x - center.x,
    y: point.y - center.y
  };

  return !areClockwise(center, radius, angle1, relPoint) &&
         areClockwise(center, radius, angle2, relPoint) &&
         (relPoint.x*relPoint.x + relPoint.y*relPoint.y <= radius * radius);
}

$("#canvaspiechart").mousemove(function (e) {
    var canvasOffset = $("#canvaspiechart").offset();
    var offsetX = canvasOffset.left;
    var offsetY = canvasOffset.top;    
    var mouseX = parseInt(e.clientX - offsetX);
    var mouseY =...