stroke effect generator

main.js

var color = 'white';
var r = 1.4;//circle readius
var x = -0.15;//circle center
var y = 0.15;

function getXY(angle) {
    return {
        x: r * Math.cos(angle) + x,
        y: r * Math.sin(angle) + y
    };
}

var shadow = '';
for(var a = 0; a<360; a+=60) {
    var p = getXY(a);

    shadow += `drop-shadow(${p.x}px ${p.y}px 0 ${color}) `;
}

// ready to use with `filter:`
return shadow;