2012.json

{"type":"Polygon","coordinates":[[[111.918395, 8.644202], [111.918405, 8.644212], [111.918405, 8.644192], [111.918551, 8.644891], [111.918561, 8.644900999999999], [111.918637, 8.645156], [111.918647, 8.645166], [111.918663, 8.64548], [111.918673, 8.645489999999999], [111.918728, 8.645999], [111.918738, 8.646009], [111.919039, 8.646318], [111.919049, 8.646328], [111.919034, 8.646434], [111.919044, 8.646443999999999], [111.919044, 8.646424], [111.919082, 8.646519], [111.919092, 8.646529], [111.9192, 8.646546], [111.91921, 8.646556], [111.919275, 8.646509], [111.919285, 8.646519], [111.919312, 8.646387], [111.91932200000001, 8.646397], [111.919409, 8.646355], [111.919419, 8.646365], [111.919763, 8.646387], [111.919773, 8.646397], [111.919773, 8.646377000000001], [111.920906, 8.646721], [111.920916, 8.646730999999999], [111.92126, 8.646742], [111.92127, 8.646752], [111.921737, 8.646657], [111.921747, 8.646666999999999], [111.922215, 8.64654], [111.922225, 8.64655], [111.92251, 8.646286], [111.92252, 8.646296], [111.922601, 8.645968], [111.922611, 8.645978], [111.922611, 8.645958], [111.92251, 8.645713], [111.92252, 8.645723], [111.922038, 8.644918], [111.922048, 8.644928], [111.921732, 8.644599], [111.92174200000001, 8.644608999999999], [111.921673, 8.644589], [111.921683, 8.644599], [111.921507, 8.644355], [111.92151700000001, 8.644364999999999], [111.921319, 8.644117], [111.921329, 8.644127], [111.921329, 8.644107], [111.921163, 8.643894], [111.92117300000001, 8.643904], [111.921126, 8.643804], [111.921136, 8.643813999999999], [111.92149, 8.643475], [111.92150000000001, 8.643485], [111.921533, 8.643475], [111.921543, 8.643485], [111.921673, 8.643639], [111.921683, 8.643649], [111.921748, 8.64357], [111.921758, 8.64358], [111.921758, 8.64356], [111.921469, 8.643258], [111.921479, 8.643267999999999], [111.921394, 8.643337], [111.92140400000001, 8.643347], [111.921474, 8.643427], [111.921484, 8.643437], [111.921115, 8.643756], [111.921125, 8.643766], [111.92104, 8.643767], [111.92105000000001, 8.643777], [111.920879, 8.643719], [111.920889, 8.643729], [111.920889, 8.643709000000001], [111.920133, 8.643093], [111.92014300000001, 8.643103], [111.919752, 8.642807], [111.919762, 8.642816999999999], [111.919044, 8.642372], [111.919054, 8.642382], [111.918781, 8.642351], [111.918791, 8.642361], [111.918551, 8.64226], [111.918561, 8.64227], [111.918406, 8.642329], [111.91841600000001, 8.642339], [111.91841600000001, 8.642319], [111.918272, 8.642489], [111.918282, 8.642498999999999], [111.918261, 8.642807], [111.918271, 8.642816999999999], [111.918315, 8.64365], [111.91832500000001, 8.643659999999999], [111.918352, 8.643883], [111.918362, 8.643893], [111.918395, 8.644202], [111.918405, 8.644212]]]}

2017.json

{"type":"Polygon","coordinates":[[[111.916952,8.642059],[111.916866,8.642154],[111.917188,8.642504],[111.917392,8.642611],[111.917306,8.642717],[111.917467,8.642854],[111.917639,8.642833],[111.91795,8.643173],[111.917886,8.643258],[111.918175,8.643565],[111.91825,8.643979],[111.918154,8.644021],[111.918122,8.643915],[111.918036,8.643936],[111.918122,8.644308],[111.918186,8.644308],[111.918186,8.644255],[111.918358,8.644255],[111.918551,8.645008],[111.918465,8.644976],[111.918454,8.64523],[111.918422,8.645305],[111.918358,8.645315],[111.91839,8.6454],[111.918497,8.645549],[111.918508,8.645655],[111.918433,8.64574],[111.918486,8.645824],[111.918068,8.645803],[111.918068,8.645909],[111.918454,8.645941],[111.918508,8.646037],[111.918433,8.646068],[111.918433,8.646249],[111.918358,8.646249],[111.918293,8.6461],[111.917124,8.646334],[111.917038,8.646249],[111.916641,8.645368],[111.916673,8.645294],[111.91677,8.645305],[111.916791,8.6454],[111.916877,8.645347],[111.916695,8.644891],[111.916587,8.644923],[111.91663,8.64505],[111.916544,8.645124],[111.916448,8.644806],[111.916137,8.644233],[111.916137,8.643756],[111.916255,8.643756],[111.916255,8.643873],[111.916341,8.643873],[111.916351,8.643353],[111.916276,8.643353],[111.916265,8.643459],[111.916169,8.64347],[111.916169,8.643045],[111.916094,8.642992],[111.916029,8.642992],[111.915987,8.643077],[111.915976,8.644255],[111.916888,8.646387],[111.917381,8.646917],[111.918293,8.647299],[111.920278,8.648031],[111.923239,8.649176],[111.923207,8.649314],[111.923625,8.649473],[111.923625,8.649367],[111.924344,8.649664],[111.924977,8.649123],[111.924924,8.64854],[111.923175,8.646641],[111.921587,8.644456],[111.921126,8.643841],[111.92149,8.643533],[111.921619,8.643714],[111.921812,8.643576],[111.921523,8.643194],[111.921362,8.643332],[111.921426,8.643438],[111.921104,8.643745],[111.921072,8.643597],[111.920772,8.643332],[111.920418,8.643067],[111.920246,8.642961],[111.920139,8.642812],[111.919473,8.642207],[111.919398,8.642091],[111.919087,8.641995],[111.918969,8.642048],[111.918776,8.641868],[111.918036,8.641041],[111.918122,8.640956],[111.917757,8.640532],[111.917639,8.640606],[111.917435,8.640532],[111.917145,8.640447],[111.916963,8.640447],[111.916426,8.640882],[111.916373,8.641041],[111.916426,8.641476],[111.916952,8.642059]]]}

index.html

<!DOCTYPE html>
<meta charset="utf-8">
<style>

path {
  fill: #ccc;
  stroke: #000;
}

</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>

var width = 960,
    height = 500;

var projection = d3.geo.stereographic()
    .center([111.925, 8.645])
    .scale(650000);

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

var data; 

d3.json("2012.json", function(error, polygon) {
  if (error) return console.warn(error);
  data = polygon;
  console.log(data)
});

d3.json("2017.json", function(polygon) {
  var coordinates0 = data.coordinates[0].map(projection),
      coordinates1 = polygon.coordinates[0].map(projection),
      path = svg.append("path"),
      d0 = "M" + coordinates0.join("L") + "Z",
      d1 = "M" + coordinates1.join("L") + "Z";

  loop();

  function loop() {
    path
        .attr("d", d0)
      .transition()
        .duration(5000)
        .attr("d", d1)
        .each("end", loop);
  }
});


</script>

test.py

old = [[111.918395,8.644202],[111.918551,8.644891],[111.918637,8.645156],[111.918663,8.64548],[111.918728,8.645999],[111.919039,8.646318],[111.919034,8.646434],[111.919082,8.646519],[111.9192,8.646546],[111.919275,8.646509],[111.919312,8.646387],[111.919409,8.646355],[111.919763,8.646387],[111.920906,8.646721],[111.92126,8.646742],[111.921737,8.646657],[111.922215,8.64654],[111.92251,8.646286],[111.922601,8.645968],[111.92251,8.645713],[111.922038,8.644918],[111.921732,8.644599],[111.921673,8.644589],[111.921507,8.644355],[111.921319,8.644117],[111.921163,8.643894],[111.921126,8.643804],[111.92149,8.643475],[111.921533,8.643475],[111.921673,8.643639],[111.921748,8.64357],[111.921469,8.643258],[111.921394,8.643337],[111.921474,8.643427],[111.921115,8.643756],[111.92104,8.643767],[111.920879,8.643719],[111.920133,8.643093],[111.919752,8.642807],[111.919044,8.642372],[111.918781,8.642351],[111.918551,8.64226],[111.918406,8.642329],[111.918272,8.642489],[111.918261,8.642807],[111.918315,8.64365],[111.918352,8.643883],[111.918395,8.644202]]
new = [[111.916952,8.642059],[111.916866,8.642154],[111.917188,8.642504],[111.917392,8.642611],[111.917306,8.642717],[111.917467,8.642854],[111.917639,8.642833],[111.91795,8.643173],[111.917886,8.643258],[111.918175,8.643565],[111.91825,8.643979],[111.918154,8.644021],[111.918122,8.643915],[111.918036,8.643936],[111.918122,8.644308],[111.918186,8.644308],[111.918186,8.644255],[111.918358,8.644255],[111.918551,8.645008],[111.918465,8.644976],[111.918454,8.64523],[111.918422,8.645305],[111.918358,8.645315],[111.91839,8.6454],[111.918497,8.645549],[111.918508,8.645655],[111.918433,8.64574],[111.918486,8.645824],[111.918068,8.645803],[111.918068,8.645909],[111.918454,8.645941],[111.918508,8.646037],[111.918433,8.646068],[111.918433,8.646249],[111.918358,8.646249],[111.918293,8.6461],[111.917124,8.646334],[111.917038,8.646249],[111.916641,8.645368],[111.916673,8.645294],[111.91677,8.645305],[111.916791,8.6454],[111.916877,8.645347],[111.916695,8.644891],[111.916587,8.644923],[111.91663,8.64505],[111.916544,8.645124],[111.916448,8.644806],[111.916137,8.644233],[111.916137,8.643756],[111.916255,8.643756],[111.916255,8.643873],[111.916341,8.643873],[111.916351,8.643353],[111.916276,8.643353],[111.916265,8.643459],[111.916169,8.64347],[111.916169,8.643045],[111.916094,8.642992],[111.916029,8.642992],[111.915987,8.643077],[111.915976,8.644255],[111.916888,8.646387],[111.917381,8.646917],[111.918293,8.647299],[111.920278,8.648031],[111.923239,8.649176],[111.923207,8.649314],[111.923625,8.649473],[111.923625,8.649367],[111.924344,8.649664],[111.924977,8.649123],[111.924924,8.64854],[111.923175,8.646641],[111.921587,8.644456],[111.921126,8.643841],[111.92149,8.643533],[111.921619,8.643714],[111.921812,8.643576],[111.921523,8.643194],[111.921362,8.643332],[111.921426,8.643438],[111.921104,8.643745],[111.921072,8.643597],[111.920772,8.643332],[111.920418,8.643067],[111.920246,8.642961],[111.920139,8.642812],[111.919473,8.642207],[111.919398,8.642091],[111.919087,8.641995],[111.918969,8.642048],[111.918776,8.641868],[111.918036,8.641041],[111.918122,8.640956],[111.917757,8.640532],[111.917639,8.640606],[111.917435,8.640532],[111.917145,8.640447],[111.916963,8.640447],[111.916426,8.640882],[111.916373,8.641041],[111.916426,8.641476],[111.916952,8.642059]]

old_adj = []
i = 0
for coord in old:
	x, y = coord
	old_adj.append(coord)
	old_adj.append([x + 0.00001, y + 0.00001])
	if i % 6 == 0:
		old_adj.append([x + 0.00001, y - 0.00001])
	i += 1

print old_adj

print(len(old_adj))