F_VN_ContourPerimeter

F_VN_ContourPerimeter 1:

Computes the perimeter of a contour (curve length if the contour is not closed).

Syntax

Definition:

FUNCTION F_VN_ContourPerimeter : HRESULT
VAR_INPUT
    ipContour  : ITcVnContainer;
END_VAR
VAR_IN_OUT
    fPerimeter : LREAL;
END_VAR
VAR_INPUT
    bClosed    : BOOL;
    hrPrev     : HRESULT;
END_VAR

F_VN_ContourPerimeter 2: Inputs

Name

Type

Description

ipContour

ITcVnContainer

Single contour (ContainerType_Vector_TcVnPoint2_DINT or ContainerType_Vector_TcVnPoint2_REAL; The elements of this container are the points of the contour.)

bClosed

BOOL

Specifys, if the contour is closed (first and last points connected) or not

hrPrev

HRESULT

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

F_VN_ContourPerimeter 3: In/Outputs

Name

Type

Description

fPerimeter

LREAL

Returns the perimeter of the contour

F_VN_ContourPerimeter 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