F_VN_DrawArrowExp
Draws an arrowed line. (expert function)
Syntax
Definition:
FUNCTION F_VN_DrawArrowExp : 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;
eLineType : ETcVnLineType;
nShift : UDINT;
fTipLenght : LREAL;
hrPrev : HRESULT;
END_VAR
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 |
Destination image | |
|
nThickness |
DINT |
Line thickness |
|
bDoubleHead |
BOOL |
To draw an arrow on each side of the line. |
|
eLineType |
Line type | |
|
nShift |
UDINT |
Fractional bits of the coordinates (bit shift) |
|
fTipLenght |
LREAL |
Lenght of the arrow's tip as a fraction of the line's lenght |
|
hrPrev |
HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.) |
Return valueRequired 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 |