F_VN_DrawArrow

F_VN_DrawArrow 1:

Draw an arrowed line.

Syntax

Definition:

FUNCTION F_VN_DrawArrow : HRESULT
VAR_INPUT
    nX1         : UDINT;
    nY1         : UDINT;
    nX2         : UDINT;
    nY2         : UDINT;
    ipDestImage : ITcVnImage;
END_VAR
VAR_IN_OUT
    aColor      : TcVnVector4_LREAL;
END_VAR
VAR_INPUT
    nThickness  : DINT;
    bDoubleHead : BOOL;
    hrPrev      : HRESULT;
END_VAR

F_VN_DrawArrow 2: Inputs

Name

Type

Description

nX1

UDINT

x coordinate of the start point

nY1

UDINT

y coordinate of the start point

nX2

UDINT

x coordinate of the end point

nY2

UDINT

y coordinate of the end point

ipDestImage

ITcVnImage

Destination image

nThickness

DINT

Line thickness

bDoubleHead

BOOL

To draw an arrow on each side of the line.

hrPrev

HRESULT

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

F_VN_DrawArrow 3: In/Outputs

Name

Type

Description

aColor

TcVnVector4_LREAL

Color

F_VN_DrawArrow 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