F_VN_ClipLineToBoundary
Clips a line to a rectangular boundary.
Syntax
Definition:
FUNCTION F_VN_ClipLineToBoundary : HRESULT
VAR_IN_OUT
aLine : TcVnVector4_LREAL;
END_VAR
VAR_INPUT
nX1 : DINT;
nY1 : DINT;
nX2 : DINT;
nY2 : DINT;
END_VAR
VAR_IN_OUT
aStartPoint : TcVnPoint2_REAL;
aEndPoint : TcVnPoint2_REAL;
END_VAR
VAR_INPUT
hrPrev : HRESULT;
END_VAR
Inputs
|
Name |
Type |
Description |
|---|---|---|
|
nX1 |
DINT |
x of top left rectangle point |
|
nY1 |
DINT |
y of top left rectangle point |
|
nX2 |
DINT |
x of bottom right rectangle point |
|
nY2 |
DINT |
Y of bottom right rectangle point |
|
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. | |
|
aStartPoint |
Returns the clipped starting point of the line. | |
|
aEndPoint |
Returns the clipped end point of the line. |
Return valueWeiterführende Informationen
Diese Funktion passt eine Linie an einen vorgegebenen Bereich an.
Für verschiedene Definitionsformen dieses Bereichs existieren verschiedene Funktionen:
Definition des rechteckigen Bereichs | Zu verwendende Funktion |
|---|---|
Durch einzelne X/Y-Koordinaten vorgegeben | |
Durch die Größe eines Bildes | |
Durch eine Rechteck-Struktur |
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 |