ICogAcqROI.SetROIXYWidthHeight Method

ICogAcqROI SetROIXYWidthHeight Method

Cognex VisionPro 9.7

Sets the ROI.

Namespace: Cognex.VisionPro
Assembly: Cognex.VisionPro.Core (in Cognex.VisionPro.Core.dll) Version: 73.0.0.0

Syntax

void SetROIXYWidthHeight(
	int x,
	int y,
	int width,
	int height
)

void SetROIXYWidthHeight(
	int x,
	int y,
	int width,
	int height
)

Sub SetROIXYWidthHeight ( 
	x As Integer,
	y As Integer,
	width As Integer,
	height As Integer
)

Sub SetROIXYWidthHeight ( 
	x As Integer,
	y As Integer,
	width As Integer,
	height As Integer
)

void SetROIXYWidthHeight(
	int x, 
	int y, 
	int width, 
	int height
)

void SetROIXYWidthHeight(
	int x, 
	int y, 
	int width, 
	int height
)

Parameters

x: Type: System Int32
The x-coordinate of the start of the ROI.

y: Type: System Int32
The y-coordinate of the start of the ROI.

width: Type: System Int32
The width of the ROI

height: Type: System Int32
The height of the ROI.

Events

Event Type	Reason
ICogChangedEvent Changed	Fires when the ROI is changed. The following state flag may be affected: SfGetROIXYWidthHeight

Event Type

Reason

ICogChangedEvent Changed

Fires when the ROI is changed.

The following state flag may be affected:

SfGetROIXYWidthHeight

Exceptions

Exception	Condition
ArgumentException	Any parameter is < 0.

Remarks

Sets the acquisition region of interest (ROI).

Note: If the ROI specified extends in the positive direction beyond the bounds specified by the video format, it will be silently clipped.

Examples

C++

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using Cognex.VisionPro;

private CogFrameGrabbers myFrameGrabbers;
private ICogFrameGrabber myFrameGrabber;
private ICogAcqFifo myAcqFifo;

private void InitializeFifo()
{
    const string VIDEO_FORMAT = "Sony XC75 640x480";
    ICogAcqROI ROIParams;

    myFrameGrabbers = new CogFrameGrabbers();
    myFrameGrabber = myFrameGrabbers[0];
    myAcqFifo = myFrameGrabber.CreateAcqFifo(VIDEO_FORMAT, 
        Cognex.VisionPro.CogAcqFifoPixelFormatConstants.Format8Grey, 0, false);

    ROIParams = myAcqFifo.OwnedROIParams;
    if (ROIParams != null)
        ROIParams.SetROIXYWidthHeight(10, 20, 300, 200);
}

using Cognex.VisionPro;

private CogFrameGrabbers myFrameGrabbers;
private ICogFrameGrabber myFrameGrabber;
private ICogAcqFifo myAcqFifo;

private void InitializeFifo()
{
    const string VIDEO_FORMAT = "Sony XC75 640x480";
    ICogAcqROI ROIParams;

    myFrameGrabbers = new CogFrameGrabbers();
    myFrameGrabber = myFrameGrabbers[0];
    myAcqFifo = myFrameGrabber.CreateAcqFifo(VIDEO_FORMAT, 
        Cognex.VisionPro.CogAcqFifoPixelFormatConstants.Format8Grey, 0, false);

    ROIParams = myAcqFifo.OwnedROIParams;
    if (ROIParams != null)
        ROIParams.SetROIXYWidthHeight(10, 20, 300, 200);
}

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Imports Cognex.VisionPro

Private myFrameGrabbers As CogFrameGrabbers
Private myFrameGrabber As Cognex.VisionPro.ICogFrameGrabber
Private myAcqFifo As Cognex.VisionPro.ICogAcqFifo

Private Sub InitializeFifo()
    Const VIDEO_FORMAT = "Sony XC75 640x480"
    Dim ROIParams As Cognex.VisionPro.ICogAcqROI

    myFrameGrabbers = New CogFrameGrabbers
    myFrameGrabber = myFrameGrabbers.Item(0)
    myAcqFifo = myFrameGrabber.CreateAcqFifo(VIDEO_FORMAT, CogAcqFifoPixelFormatConstants.Format8Grey, 0, False)

    ROIParams = myAcqFifo.OwnedROIParams

    If Not ROIParams Is Nothing Then
        ROIParams.SetROIXYWidthHeight(10, 20, 300, 200)
    End If
End Sub

Imports Cognex.VisionPro

Private myFrameGrabbers As CogFrameGrabbers
Private myFrameGrabber As Cognex.VisionPro.ICogFrameGrabber
Private myAcqFifo As Cognex.VisionPro.ICogAcqFifo

Private Sub InitializeFifo()
    Const VIDEO_FORMAT = "Sony XC75 640x480"
    Dim ROIParams As Cognex.VisionPro.ICogAcqROI

    myFrameGrabbers = New CogFrameGrabbers
    myFrameGrabber = myFrameGrabbers.Item(0)
    myAcqFifo = myFrameGrabber.CreateAcqFifo(VIDEO_FORMAT, CogAcqFifoPixelFormatConstants.Format8Grey, 0, False)

    ROIParams = myAcqFifo.OwnedROIParams

    If Not ROIParams Is Nothing Then
        ROIParams.SetROIXYWidthHeight(10, 20, 300, 200)
    End If
End Sub