---
title: Chain to points
---

To get points consistently spaced along a chains, call
<a href="/docs/api/modules/makerjs.chain.html#topoints">makerjs.model.toPoints(chain, distance)</a>
passing your chain, and the distance between points:

{% highlight javascript %}
//convert a round rectangle to points

var makerjs = require('makerjs');

var rect = new makerjs.models.RoundRectangle(100, 50, 10);

var chain = makerjs.model.findSingleChain(rect);
var spacing = 10;
var keyPoints = makerjs.chain.toPoints(chain, spacing);

var model = {
  models: {
    rect: rect,
    dots: new makerjs.models.Holes(1, keyPoints)
  }
};

var svg = makerjs.exporter.toSVG(model);

document.write(svg);
{% endhighlight %}

<script>
    LiveDoc.evalLastCode();
</script>

Hint: you can use the <b>pathLength</b> property of the chain to make sure your distance divides equally on the entire chain:

{% highlight javascript %}
//convert a round rectangle to points

var makerjs = require('makerjs');

var rect = new makerjs.models.RoundRectangle(100, 50, 10);

var chain = makerjs.model.findSingleChain(rect);
var minimumSpacing = 10;
var divisions = Math.floor(chain.pathLength / minimumSpacing);
var spacing = chain.pathLength / divisions;

console.log(spacing);

var keyPoints = makerjs.chain.toPoints(chain, spacing);

var model = {
  models: {
    rect: rect,
    dots: new makerjs.models.Holes(1, keyPoints)
  }
};

var svg = makerjs.exporter.toSVG(model);

document.write(svg);
{% endhighlight %}

<script>
    LiveDoc.evalLastCode();
</script>