F_VN_TransformCoordinatesPlanar_Point

Compute real-world coordinates for a given image point or vice versa.

Syntax

Definition:

FUNCTION F_VN_TransformCoordinatesPlanar_Point : HRESULT
VAR_IN_OUT
    aSrcPoint             : TcVnPoint2_LREAL;
    aDestPoint            : TcVnPoint2_LREAL;
    aTransformationMatrix : TcVnMatrix3x3_LREAL;
END_VAR
VAR_INPUT
    hrPrev                : HRESULT;
END_VAR

Inputs

Name	Type	Description
hrPrev	HRESULT	HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.)

In/Outputs

Name	Type	Description
aSrcPoint	TcVnPoint2_LREAL	Point in the source coordinate system
aDestPoint	TcVnPoint2_LREAL	Returns point in the destination coordinate system
aTransformationMatrix	TcVnMatrix3x3_LREAL	Transformation matrix obtained with VnCalibrateCameraPlanar() or its inverse matrix obtained with VnInvertMatrix3x3()

Return value

HRESULT

Required License

TC3 Vision Base

System Requirements

Development environment	Target platform	PLC libraries to include
TwinCAT V3.1. 4024.44 or later	PC or CX (x64) with PL50, e.g. Intel 4-core Atom CPU	Tc3_Vision