F_VN_DrawLine
Draws a line.
Syntax
Definition:
FUNCTION F_VN_DrawLine : 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;
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 |
|
hrPrev |
HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.) |
Return valueHRESULT
|
| Part of the line lies outside of the image area. Use the function F_VN_ClipLineToBoundary_ITcVnImage to ensure that the specified line fits in the image area. |
Required License
TC3 Vision Base