F_VN_DrawComponentsExp
Draw the results of connected component function. (expert function)
Can use available TwinCAT Job Tasks for executing parallel code regions.
Syntax
Definition:
FUNCTION F_VN_DrawComponentsExp : HRESULT
VAR_INPUT
ipLabelImage : ITcVnImage;
nLabelID : DINT;
ipDestImage : Reference To ITcVnImage;
bShowLabelID : BOOL;
END_VAR
VAR_IN_OUT
aColor : TcVnVector4_LREAL;
END_VAR
VAR_INPUT
nThickness : DINT;
fFontScale : LREAL;
hrPrev : HRESULT;
END_VAR
Inputs
|
Name |
Type |
Description |
|---|---|---|
|
ipLabelImage |
Image contains labels for each pixel (1 channel DINT or UINT). | |
|
nLabelID |
DINT |
Value of a specific label to be drawn (if negative, all components within the image are drawn) |
|
ipDestImage |
Reference To ITcVnImage |
Destination image (An appropriate image will be created if required. The output image is 1 or 3 channels USINT). |
|
bShowLabelID |
BOOL |
Show lable ID in the center of the component on the destination image |
|
nThickness |
DINT |
Text line thickness |
|
fFontScale |
LREAL |
Scaling factor for the text |
|
hrPrev |
HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.) |
In/Outputs
|
Name |
Type |
Description |
|---|---|---|
|
aColor |
Color to draw the components (for {-1, -1, -1, -1}, a random color is chosen for each component) |
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 |