F_VN_ContourArea
Estimate the contour area using Green's formula.
Syntax
Definition:
FUNCTION F_VN_ContourArea : HRESULT
VAR_INPUT
ipContour : ITcVnContainer;
END_VAR
VAR_IN_OUT
fArea : LREAL;
END_VAR
VAR_INPUT
hrPrev : HRESULT;
END_VAR
Inputs
|
Name |
Type |
Description |
|---|---|---|
|
ipContour |
Single contour (ContainerType_Vector_TcVnPoint2_DINT or ContainerType_Vector_TcVnPoint2_REAL; The elements of this container are the points of the contour.) | |
|
hrPrev |
HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.) |
In/Outputs
|
Name |
Type |
Description |
|---|---|---|
|
fArea |
LREAL |
Returns the estimated contour area (The actual contour area may differ depending on the shape of the contour.) |
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 |