0becd057b2
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.)
46 lines
1 KiB
Markdown
46 lines
1 KiB
Markdown
---
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title: Slash and spread
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for: developers
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about: Slash and spread is easy enough on paper, here's how to do it in code
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---
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<Note>
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##### See this example in our source code
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- [designs/jaeger/src/front.js](https://github.com/freesewing/freesewing/blob/3ca5d0edfe54c7ac20aaf3af2f3544aee72f9b99/designs/jaeger/src/front.js#L64)
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</Note>
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When we _slash and spread_ a pattern, we cut out a triangle, and then rotate it
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around the tip of the triangle.
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And that's exactly what we do in code. We just need to know:
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- What point we want to rotate around
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- Which points we want to rotate
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- By how much we want to rotate
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```js
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let rotate = [
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'splitEdge',
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'neckEdge',
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'cfNeck',
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'cfNeckCp1',
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'neckCp2Front',
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'neck',
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'shoulder',
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'shoulderCp1',
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'armholePitchCp2',
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'armholePitch',
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'armholePitchCp1',
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'armholeHollowCp2',
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'armholeHollow',
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'armholeHollowCp1',
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'splitCp2',
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'frontNeckCpEdge'
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]
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for (let p of rotate) {
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points[p] = points[p].rotate(options.chestShapingMax * options.chestShaping * -1, points.split)
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}
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```
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