freesewing/markdown/dev/reference/api/utils/circlesintersect/en.md

title
utils.circlesIntersect()

The utils.circlesIntersect() function finds the intersections between two circles described by their center point and radius.

Signature

array | false utils.circlesIntersect(
  Point centerA, 
  float radiusA, 
  Point centerB, 
  float radiusB, 
  string sort = 'x'
)

The 5th and last parameter controls the sorting of the found intersections. When this returns 2 intersections, you can choose how they are ordered in the returned array:

Set sort to:

• x : The point with the lowest X-coordinate will go first (left to right)
• y : The point with the lowest Y-coordinate will go first (top to bottom)

Example

```js ({ Point, points, Snippet, snippets, utils, part }) => {

points.A = new Point(10, 10) .addCircle(15, "fabric") points.B = new Point(30, 30) .addCircle(35, "fabric") points.C = new Point(90, 10) .addCircle(15, "various") points.D = new Point(110, 30) .addCircle(35, "various")

const intersections1 = utils.circlesIntersect( points.A, points.A.attributes.get("data-circle"), points.B, points.B.attributes.get("data-circle") ) const intersections2 = utils.circlesIntersect( points.C, points.C.attributes.get("data-circle"), points.D, points.D.attributes.get("data-circle"), "y" )

snippets.first1 = new Snippet("bnotch", intersections1[0]) snippets.second1 = new Snippet("notch", intersections1[1]) snippets.first2 = new Snippet("bnotch", intersections2[0]) snippets.second2 = new Snippet("notch", intersections2[1])

return part }

</Example>