ctx.ellipse polyfill

ellipse.js

var ctx = document.getElementById('c').getContext('2d');

function ellipse(context, cx, cy, rx, ry, rot, aStart, aEnd){
  context.save();
  context.translate(cx, cy);
  context.rotate(rot);
  context.translate(-rx, -ry);
  
  context.scale(rx, ry);
  context.arc(1, 1, 1, aStart, aEnd, false);
  context.restore();
}


ctx.beginPath();
ellipse(ctx, 20 + 453.57086, 535.50775, 372.76324, 218.93465, -1.5126187, -2.6609108, 0.9053637999999999);
ctx.stroke();

ctx.beginPath();
ctx.ellipse(453.57086, 535.50775, 372.76324, 218.93465, -1.5126187, -2.6609108, 0.9053637999999999);
ctx.stroke();