# Circle

Creates a fixtured Circle structure.

Inputs

Parameter | Description
Image | This argument must reference a spreadsheet cell that contains a valid Image data structure. By default, the cell referenced is cell A0, containing the Image data structure returned by the AcquireImage function.
Fixture | Specifies the image coordinate system in which the circle is defined.
X | The X-offset of the fixture.
Y | The Y-offset of the fixture.
Theta | Offset from fixture origin.
Circle | Specifies the size and position of the circle, in fixture coordinates.
X | The X-offset of the circle.
Y | The Y-offset of the circle.
Radius | The radius of the circle.
Show | Selects the type of graphics to overlay on the image.
0 = hide all | The circle structure graphic is not displayed unless the cell containing the circle function is highlighted in the spreadsheet.
2 = input graphics only | The circle structure graphic is always displayed.

Note: The Fixture and Circle parameters must be defined within the bounds of the image. Otherwise, the function returns #ERR.
Outputs

Returns | A Circle data structure, or #ERR if any of the input parameters are invalid.
Results | When Circle is initially inserted into a cell, a result table is created in the spreadsheet with the following Structures Vision Data Access functions
Label | Function | Description
X | GetX(Circle) | The X-coordinate.
Y | GetY(Circle) | The Y-coordinate.
Radius | GetRadius(Circle) | The radius of the circle.