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freesewing/markdown/dev/howtos/code/shared-dimensions/en.md
nikhil 0becd057b2 fix: Broken/misleading links to designs' source code
Some of these links were actually broken, since they expect to find designs under the `packages/` directory in the current `develop` branch. Other links were technically okay, since they link to old commits, but updating those links may still help to reduce confusion.

Also fix a reference to `packages/unice` in a `netlify.toml` file. (Untested, but I don't think this is an actual Netlify configuration.)
2022-08-21 12:31:23 -04:00

1.3 KiB

title for about
Share dimensions between pattern parts developers Shows how to share dimensions between similar pattern parts
See this example in our source code

When you have different pattern parts that look similar -- like the front and back of a garment -- you may find that there's a lot of dimensions shared between them.

The example below is from Aaron where dimensions are shared between the back and front part.

Aaron has a file called shared.js that looks like this:

export function dimensions(macro, points, sa) {
  macro('hd', {
    from: points.cfHem,
    to: points.hem,
    y: points.hem.y + sa * 2.5 + 15
  })
  // more dimensions here
}

In both front.js and back.js we use this code to add these shared dimensions:

import { dimensions } from './shared'

// ...

  if (paperless) {
    dimensions(macro, points, sa)
    // ... specific dimensions 
  }

Since our shared dimension method is a so-called named export we need to import it with the syntax you see above.