WarpPerspective (Rectangle)

Use a perspective transform to warp a rectangle.

Syntax

Definition:

HRESULT WarpPerspective(
    HRESULT              hrPrev,
    ULONG                nTopLeftX,
    ULONG                nTopLeftY,
    ULONG                nBottomRightX,
    ULONG                nBottomRightY,
    ITcVnContainer*&     ipDestPoints,
    TcVnMatrix3x3_LREAL& aTransformationMatrix
)

Parameters

Name

Type

Description

hrPrev

HRESULT

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

nTopLeftX

ULONG

x coordinate of the top left corner

nTopLeftY

ULONG

y coordinate of the top left corner

nBottomRightX

ULONG

x coordinate of the bottom right corner

nBottomRightY

ULONG

y coordinate of the bottom right corner

ipDestPoints

ITcVnContainer*&

Returns the 4 transformed points (ContainerType_Vector_TcVnPoint2_REAL)

aTransformationMatrix

TcVnMatrix3x3_LREAL&

Perspective transformation matrix

WarpPerspective (Rectangle) 1: 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