57 lines
1.3 KiB
Markdown
57 lines
1.3 KiB
Markdown
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---
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title: Share dimensions between pattern parts
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for: developers
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about: Shows how to share dimensions between similar pattern parts
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---
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<Note>
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##### See this example in our source code
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- [packages/aaron/src/shared.js](https://github.com/freesewing/freesewing/blob/develop/packages/aaron/src/shared.js)
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- [packages/aaron/src/front.js](https://github.com/freesewing/freesewing/blob/72f34101792bda4d8e553c3479daa63cb461f3c5/packages/aaron/src/front.js#L160)
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</Note>
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When you have different pattern parts that look similar -- like the front
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and back of a garment -- you may find that there's a lot of dimensions
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shared between them.
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The example below is from Aaron where dimensions are shared between
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the back and front part.
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Aaron has a file called `shared.js` that looks like this:
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```js
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export function dimensions(macro, points, sa) {
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macro('hd', {
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from: points.cfHem,
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to: points.hem,
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y: points.hem.y + sa * 2.5 + 15
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})
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// more dimensions here
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}
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```
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In both `front.js` and `back.js` we use this code to add these shared dimensions:
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```js
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import { dimensions } from './shared'
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// ...
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if (paperless) {
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dimensions(macro, points, sa)
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// ... specific dimensions
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}
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```
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<Note>
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Since our shared dimension method is a so-called _named export_ we need to
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import it with the syntax you see above.
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</Note>
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