F_VN_DrawLine_TcVnVector4_LREAL
Draws a line.
Syntax
Definition:
FUNCTION F_VN_DrawLine_TcVnVector4_LREAL : HRESULT
VAR_IN_OUT
aLine : TcVnVector4_LREAL;
END_VAR
VAR_INPUT
ipDestImage : ITcVnImage;
END_VAR
VAR_IN_OUT
aColor : TcVnVector4_LREAL;
END_VAR
VAR_INPUT
nThickness : DINT;
hrPrev : HRESULT;
END_VAR
Inputs
|
Name |
Type |
Description |
|---|---|---|
|
ipDestImage |
Destination image | |
|
nThickness |
DINT |
Line thickness |
|
hrPrev |
HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.) |
In/Outputs
|
Name |
Type |
Description |
|---|---|---|
|
aLine |
The first and second element describe the x and y component of the direction vector. The third and fourth element describe the x and y component of the position vector. | |
|
aColor |
Color |
Return valueNotice | |
Floating point exceptions This function can unnecessarily cause errors if the option Floating point exceptions of the executing PLC task is active. Therefore, deactivate this option. |
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 |