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CSS

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HTML 

              
                <svg id="morphTest" height="800" width="800" xmlns="http://www.w3.org/2000/svg">
  <path d="" stroke-width="3px" stroke="black" fill="transparent"></path>
</svg>
!

CSS
!

JS 

              
                console.clear();

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];

console.log(sets.length);

// Make duplicate points so transitioning will work with anime
function duplicate(row) {
  const aggr = [];
  for (let i = 0; i < row.length - 1; i++) {
    aggr.push(row[i]);
    aggr.push(row[i]);
  }
  aggr.push(row[row.length-1]);
  return aggr;
}

const iter1 = duplicate(duplicate(duplicate(duplicate(duplicate(duplicate(sets[0]))))));
const iter2 = duplicate(duplicate(duplicate(duplicate(duplicate(sets[1])))));
const iter3 = duplicate(duplicate(duplicate(duplicate(sets[2]))));
const iter4 = duplicate(duplicate(duplicate(sets[3])));
const iter5 = duplicate(duplicate(sets[4]));
const iter6 = duplicate(sets[5]);
const iter7 = sets[6];

const mySets = [iter1, iter2, iter3, iter4 ,iter5, iter6, iter7]
mySets.map(arr => console.log(arr));

function pointsToPath(points) {
  const arrayOfStrings = [];
  arrayOfStrings.push(`M ${points[0][0]} ${points[0][1]}`);
  
  for (let i = 1; i < points.length; i++) {
    arrayOfStrings.push(`L ${points[i][0]} ${points[i][1]}`);
  }
  
  return arrayOfStrings.join(' ');
}

const pathSets = mySets.map(pointsToPath);
pathSets.push(pathSets[0]);

window.morphTest.querySelector('path').setAttribute('d', pathSets[0])

anime({
  targets: '#morphTest path',
  d: pathSets.map(set => ({ value: set})),
  easing: 'easeInOutQuint',
  duration: 20000,
  loop: true
});
!
999px

Console