Rotate2 Method

Syntax

CWIMAQVision.Rotate2 SourceImage, DestImage, Angle [, FillValue = 0.0] [, InterpolationMethod = cwimaqInterpolateZeroOrder] [, MaintainSize = True]

Return Type

Long

On success, this method returns 0. On failure, this method returns a negative number.

Purpose

Rotates an image counterclockwise.

Remarks

Use this method with U8, I16, SGL, and RGB32 images.

Parameters

SourceImage As CWIMAQImage

The image to rotate.

DestImage As CWIMAQImage

The resulting image.

Angle As Single

The angle, in degrees, to rotate the image.

FillValue As Variant

[Optional] The value with which the method fills the image pixels not covered by the rotated image.

This parameter has a default value of 0.0.

InterpolationMethod As Variant

[Optional] The method of interpolation. Valid interpolation methods for rotation are cwimaqInterpolateZeroOrder and cwimaqInterpolateBiLinear.

This parameter has a default value of cwimaqInterpolateZeroOrder.

MaintainSize As Variant

[Optional] Whether the rotated image should have the same size as the source image.

This parameter has a default value of True.

Example

Private Sub Run_Click()
    Dim i As New CWIMAQImage
    
    ' Rotate the image in Viewer1 by 45 degrees.
    ' Store the result in i.
    CWIMAQVision1.Rotate2 CWIMAQViewer1.Image, i, 45, 128, _
                          cwimaqInterpolateBiLinear
    
    CWIMAQViewer2.Attach i
End Sub

See Also

CWIMAQInterpolateMethods