modeling-app/docs/kcl/patternCircular2d.md

---
title: "patternCircular2d"
excerpt: "A circular pattern on a 2D sketch."
layout: manual
---

A circular pattern on a 2D sketch.



```js
patternCircular2d(data: CircularPattern2dData, sketch_group_set: SketchGroupSet) -> [SketchGroup]
```

### Examples

```js
const exampleSketch = startSketchOn('XZ')
  |> startProfileAt([.5, 25], %)
  |> line([0, 5], %)
  |> line([-1, 0], %)
  |> line([0, -5], %)
  |> close(%)
  |> patternCircular2d({
       center: [0, 0],
       repetitions: 12,
       arcDegrees: 360,
       rotateDuplicates: true
     }, %)

const example = extrude(1, exampleSketch)
```

![Rendered example of patternCircular2d 0](data:image/png;base64,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

### Arguments

* `data`: `CircularPattern2dData` - Data for a circular pattern on a 2D sketch. (REQUIRED)
```js
{
	// The arc angle (in degrees) to place the repetitions. Must be greater than 0.
	arcDegrees: number,
	// The center about which to make the pattern. This is a 2D vector.
	center: [number, number],
	// The number of repetitions. Must be greater than 0. This excludes the original entity. For example, if `repetitions` is 1, the original entity will be copied once.
	repetitions: number,
	// Whether or not to rotate the duplicates as they are copied.
	rotateDuplicates: string,
}
```
* `sketch_group_set`: `SketchGroupSet` - A sketch group or a group of sketch groups. (REQUIRED)
```js
{
	// The id of the sketch group.
	id: uuid,
	// What the sketch is on (can be a plane or a face).
	on: {
	// The id of the plane.
	id: uuid,
	// Origin of the plane.
	origin: {
	x: number,
	y: number,
	z: number,
},
	type: "plane",
	// Type for a plane.
	value: "XY" | "XZ" | "YZ" | "Custom",
	// What should the plane’s X axis be?
	xAxis: {
	x: number,
	y: number,
	z: number,
},
	// What should the plane’s Y axis be?
	yAxis: {
	x: number,
	y: number,
	z: number,
},
	// The z-axis (normal).
	zAxis: {
	x: number,
	y: number,
	z: number,
},
} |
{
	// The extrude group the face is on.
	extrudeGroup: {
	// The id of the extrusion end cap
	endCapId: uuid,
	// Chamfers or fillets on this extrude group.
	filletOrChamfers: [{
	// The engine id of the edge to fillet.
	edge_id: uuid,
	// The id of the engine command that called this fillet.
	id: uuid,
	radius: number,
	type: "fillet",
} |
{
	// The engine id of the edge to chamfer.
	edge_id: uuid,
	// The id of the engine command that called this chamfer.
	id: uuid,
	length: number,
	tag: string,
	type: "chamfer",
}],
	// The height of the extrude group.
	height: number,
	// The id of the extrude group.
	id: uuid,
	// The sketch group.
	sketchGroup: {
	// The id of the sketch group.
	id: uuid,
	// What the sketch is on (can be a plane or a face).
	on: SketchSurface,
	// The starting path.
	start: {
	// The from point.
	from: [number, number],
	// The name of the path.
	name: string,
	// The to point.
	to: [number, number],
},
	// The paths in the sketch group.
	value: [{
	// The from point.
	from: [number, number],
	// The name of the path.
	name: string,
	// The to point.
	to: [number, number],
	type: "ToPoint",
} |
{
	// arc's direction
	ccw: string,
	// the arc's center
	center: [number, number],
	// The from point.
	from: [number, number],
	// The name of the path.
	name: string,
	// The to point.
	to: [number, number],
	type: "TangentialArcTo",
} |
{
	// The from point.
	from: [number, number],
	// The name of the path.
	name: string,
	// The to point.
	to: [number, number],
	type: "TangentialArc",
} |
{
	// The from point.
	from: [number, number],
	// The name of the path.
	name: string,
	// The to point.
	to: [number, number],
	type: "Horizontal",
	// The x coordinate.
	x: number,
} |
{
	// The from point.
	from: [number, number],
	// The name of the path.
	name: string,
	// The to point.
	to: [number, number],
	type: "AngledLineTo",
	// The x coordinate.
	x: number,
	// The y coordinate.
	y: number,
} |
{
	// The from point.
	from: [number, number],
	// The name of the path.
	name: string,
	// The to point.
	to: [number, number],
	type: "Base",
}],
},
	// The id of the extrusion start cap
	startCapId: uuid,
	// The extrude surfaces.
	value: [{
	// The face id for the extrude plane.
	faceId: uuid,
	// The id of the geometry.
	id: uuid,
	// The name.
	name: string,
	// The source range.
	sourceRange: [number, number],
	type: "extrudePlane",
} |
{
	// The face id for the extrude plane.
	faceId: uuid,
	// The id of the geometry.
	id: uuid,
	// The name.
	name: string,
	// The source range.
	sourceRange: [number, number],
	type: "extrudeArc",
}],
},
	// The id of the face.
	id: uuid,
	type: "face",
	// The tag of the face.
	value: string,
	// What should the face’s X axis be?
	xAxis: {
	x: number,
	y: number,
	z: number,
},
	// What should the face’s Y axis be?
	yAxis: {
	x: number,
	y: number,
	z: number,
},
	// The z-axis (normal).
	zAxis: {
	x: number,
	y: number,
	z: number,
},
},
	// The starting path.
	start: {
	// The from point.
	from: [number, number],
	// The name of the path.
	name: string,
	// The to point.
	to: [number, number],
},
	type: "sketchGroup",
	// The paths in the sketch group.
	value: [{
	// The from point.
	from: [number, number],
	// The name of the path.
	name: string,
	// The to point.
	to: [number, number],
	type: "ToPoint",
} |
{
	// arc's direction
	ccw: string,
	// the arc's center
	center: [number, number],
	// The from point.
	from: [number, number],
	// The name of the path.
	name: string,
	// The to point.
	to: [number, number],
	type: "TangentialArcTo",
} |
{
	// The from point.
	from: [number, number],
	// The name of the path.
	name: string,
	// The to point.
	to: [number, number],
	type: "TangentialArc",
} |
{
	// The from point.
	from: [number, number],
	// The name of the path.
	name: string,
	// The to point.
	to: [number, number],
	type: "Horizontal",
	// The x coordinate.
	x: number,
} |
{
	// The from point.
	from: [number, number],
	// The name of the path.
	name: string,
	// The to point.
	to: [number, number],
	type: "AngledLineTo",
	// The x coordinate.
	x: number,
	// The y coordinate.
	y: number,
} |
{
	// The from point.
	from: [number, number],
	// The name of the path.
	name: string,
	// The to point.
	to: [number, number],
	type: "Base",
}],
} |
{
	type: "sketchGroups",
}
```

### Returns

`[SketchGroup]`