code: function getDialCoords(radius, startAngle, endAngle) {
        var cx = GaugeDefaults.centerX,
            cy = GaugeDefaults.centerY;
        return {
          end: getCartesian(cx, cy, radius, endAngle),
        	start: getCartesian(cx, cy, radius, startAngle)
        };
      }
docs: Returns start and end points for dial i.e. starts at 135deg ends at 45deg with large arc flag REMEMBER!! angle=0 starts on X axis and then increases clockwise