FitEllipse2 Method

Syntax

CWIMAQVision.FitEllipse2 RadialPoints, Options, FitEllipseReport

Return Type

Long

On success, this method returns 0. On failure, this method returns a negative number.

Purpose

Finds the ellipse that best represents a set of points.

Remarks

You must supply at least six non-colinear points to fit to the edge of the ellipse.

Parameters

RadialPoints As CWIMAQPoints

The coordinates of the points to use for the fit. This collection must have at least six items.

Options As CWIMAQFitEllipseOptions

The options that the algorithm will use.

FitEllipseReport As CWIMAQFitEllipseReport

On return, a report containing information about the ellipse that best represents the set of points.

Example

Dim report As New CWIMAQFitEllipseReport
Dim options As New CWIMAQFitEllipseOptions
Dim points As New CWIMAQPoints

' Find the ellipse that passes through
' (1,1), (-1,1), (1,-1), (-1,-1), (1.414,0), (0, 1.414)
points.Initialize Array(1, -1, 1, -1, 1.414, 0), _
                  Array(1, 1, -1, -1, 0, 1.414)
CWIMAQVision1.FitEllipse2 points, options, report