1.3 KiB
1.3 KiB
| title |
|---|
| utils.pointOnCurve() |
The utils.pointOnCurve() function returns true if the point check lies on a
curve described by points start, cp1, cp2, and end.
Signature
bool utils.pointOnCurve(
Point start,
Point cp1,
Point cp2,
Point end,
Point check
)
Example
```js ({ Point, points, Path, paths, Snippet, snippets, getId, utils, part }) => {points.start = new Point(10, 10) points.cp1 = new Point(90, 10) points.cp2 = new Point(10, 60) points.end = new Point(90, 60)
const scatter = [] for (let i = 1; i < 19; i++) { for (let j = 1; j < 14; j++) { scatter.push(new Point(i * 10, j * 10)) } } let snippet for (let point of scatter) { if ( utils.pointOnCurve( points.start, points.cp1, points.cp2, points.end, point ) ) { snippet = "notch" } else snippet = "bnotch" snippets[getId()] = new Snippet(snippet, point) } paths.curve = new Path() .move(points.start) .curve(points.cp1, points.cp2, points.end) .addClass("fabric stroke-lg")
return part }
</Example>
## Notes
Keep in mind that calculations with Bezier curves are often aproximations.