ab3204f9f1
The replaces the NextJS site powering FreeSewing.dev with a Docusaurus setup. It's part of my efforts to simplify FreeSewing's setup so we can focus on our core value proposition.
62 lines
1.3 KiB
Text
62 lines
1.3 KiB
Text
---
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title: utils.lineIntersectsCurve()
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---
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The `utils.lineIntersectsCurve()` function finds the intersection between a line
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segment from point `from` to point `to` and a curve described by points
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`start`, `cp1`, `cp2, and `end\`.
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:::warning
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This function can sometimes fail to find intersections in some curves
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due to a limitation in an underlying Bézier library.
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Please see [Bug #3367](https://github.com/freesewing/freesewing/issues/3367)
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for more information.
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:::
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## Signature
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```js
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array | false utils.lineIntersectsCurve(
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Point from,
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Point to,
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Point start,
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Point cp1,
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Point cp2,
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Point end
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)
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```
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## Example
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<Example caption="A Utils.lineIntersectsCurve() example">
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```js
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({ Point, points, Path, paths, Snippet, snippets, getId, utils, part }) => {
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points.A = new Point(10, 10)
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points.Acp = new Point(310, 40)
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points.B = new Point(110, 70)
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points.Bcp = new Point(-210, 40)
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points.E = new Point(20, -5)
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points.D = new Point(100, 85)
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paths.curve = new Path()
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.move(points.A)
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.curve(points.Acp, points.Bcp, points.B)
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paths.line = new Path().move(points.E).line(points.D)
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for (let p of utils.lineIntersectsCurve(
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points.D,
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points.E,
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points.A,
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points.Acp,
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points.Bcp,
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points.B
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)) {
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snippets[getId()] = new Snippet("notch", p)
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}
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return part
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}
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```
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</Example>
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