F_VN_GetAffineTransformation

F_VN_GetAffineTransformation 1:

Calculate the affine transformation between three corresponding point pairs. The points mark the corners of the corresponding triangles.

Syntax

Definition:

FUNCTION F_VN_GetAffineTransformation : HRESULT
VAR_IN_OUT
    aSrcPoints            : TcVnArray3_Point2_REAL;
    aDestPoints           : TcVnArray3_Point2_REAL;
    aTransformationMatrix : TcVnMatrix2x3_LREAL;
END_VAR
VAR_INPUT
    hrPrev                : HRESULT;
END_VAR

F_VN_GetAffineTransformation 2: Inputs

Name

Type

Description

hrPrev

HRESULT

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

F_VN_GetAffineTransformation 3: In/Outputs

Name

Type

Description

aSrcPoints

TcVnArray3_Point2_REAL

Source points

aDestPoints

TcVnArray3_Point2_REAL

Destination points

aTransformationMatrix

TcVnMatrix2x3_LREAL

Resulting transformation matrix

F_VN_GetAffineTransformation 4: Return value

HRESULT

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