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Merge pull request #3349 from BenJamesBen/stretchtoscale-doc-update

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fix(docs): Update utils.stretchToScale()
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Joost De Cock 2022-12-30 17:00:56 +01:00 • committed by GitHub
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markdown/dev/reference/api/utils/stretchtoscale/en.md
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@ -15,9 +15,13 @@ float utils.stretchToScale(float stretch)
The way people measure stretch intuitively is different from the way we handle stretch in code. The way people measure stretch intuitively is different from the way we handle stretch in code.
When people say _25% stretch_ they mean that 10 cm fabric gets stretched to 12.5 cm fabric. When people say fabric has _25% stretch_ they mean that 10 cm of fabric can
In code and on our patterns, that means we need to scale things by 80%. stretch to 12.5 cm.
In code that means we would need to scale non-stretch lengths by 80%
to get the correct lengths to use in patterns with 25% stretch fabric.
Pattern designers need a way to calculate the scaling factor to use for
their pattern part lengths, given a fabric stretch percentage.
This function does that by returning: This function does that by returning:
```js ```js