F_VN_FitEllipse

F_VN_FitEllipse 1:

Fit an ellipse in a point set.

Syntax

Definition:

FUNCTION F_VN_FitEllipse : HRESULT
VAR_INPUT
    ipPointSet : ITcVnContainer;
END_VAR
VAR_IN_OUT
    stEllipse  : TcVnRotatedRectangle;
END_VAR
VAR_INPUT
    hrPrev     : HRESULT;
END_VAR

F_VN_FitEllipse 2: Inputs

Name

Type

Description

ipPointSet

ITcVnContainer

Source point set (ContainerType_Vector_TcVnPoint2_DINT or ContainerType_Vector_TcVnPoint2_REAL; At least 5 reasonable points are required! The elements of this container are the individual points.)

hrPrev

HRESULT

HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.)

F_VN_FitEllipse 3: In/Outputs

Name

Type

Description

stEllipse

TcVnRotatedRectangle

Resulting ellipse, described by a rotated rectangle.

F_VN_FitEllipse 4: Return value

HRESULT

Required License

TC3 Vision Base

System Requirements

Development environment

Target platform

PLC libraries to include

TwinCAT V3.1.4024.54 or later

PC or CX (x64) with PL50, e.g. Intel 4-core Atom CPU

Tc3_Vision