F_VN_WarpPerspective_Rectangle
Use a perspective transform to warp a rectangle.
Syntax
Definition:
FUNCTION F_VN_WarpPerspective_Rectangle : HRESULT
VAR_INPUT
nTopLeftX : UDINT;
nTopLeftY : UDINT;
nBottomRightX : UDINT;
nBottomRightY : UDINT;
ipDestPoints : Reference To ITcVnContainer;
END_VAR
VAR_IN_OUT
aTransformationMatrix : TcVnMatrix3x3_LREAL;
END_VAR
VAR_INPUT
hrPrev : HRESULT;
END_VAR
Inputs
|
Name |
Type |
Description |
|---|---|---|
|
nTopLeftX |
UDINT |
x coordinate of the top left corner |
|
nTopLeftY |
UDINT |
y coordinate of the top left corner |
|
nBottomRightX |
UDINT |
x coordinate of the bottom right corner |
|
nBottomRightY |
UDINT |
y coordinate of the bottom right corner |
|
ipDestPoints |
Reference To ITcVnContainer |
Returns the 4 transformed points (ContainerType_Vector_TcVnPoint2_REAL) |
|
hrPrev |
HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.) |
In/Outputs
|
Name |
Type |
Description |
|---|---|---|
|
aTransformationMatrix |
Perspective transformation matrix |
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 |