AntiAlias (ImageKit Control/ Effect Method)

This method smoothes edges in raster images

[C++Builder] [ bool = ]imagekitcontrolname->Effect->AntiAlias(const TPoint * Points, const int Point_Size)

[C++Builder] [ bool = ]imagekitcontrolname->Effect->AntiAlias()

[Delphi] [ Boolean = ]imagekitcontrolname.Effect.AntiAlias(const Points: array of TPoints)

[Delphi] [ Boolean = ]imagekitcontrolname.Effect.AntiAlias()

Parameters

Name	Explanation
Points	An array of x, y coordinates defining the points of a polygon area on the image. (Coordinates are given in pixels). In C++Builder, the size of the Points array is given by Points_Size - 1

Return Value

Returns True if successful, otherwise returns False.

Explanation

The AntiAlias method smoothes edges in raster images. To execute the AntiAlias method, set the image handle of the image in the ImageHandle property or the Layer(LayerNo).ImageHandle property. The AntiAlias method supports 8-bit grayscale, 16, 24, and 32 bit images.

Before executing the AntiAlias method, you must set the area on the image that will be affected. There are 4 ways to do this.

To use a mask image, set the SelectMode property to vikEffectMask. Set the mask image handle in the MaskImageHandle property
To process the total image, set the SelectMode property to vikEffectAll.
To process the polygonal area on the image, set the SelectMode property to vikEffectPolygon. Select the polygon by setting the appropriate coordinate values for the points of the polygon in the points parameter. The number of points defining the polygon must be 3 or more
To process an elliptical area on the image, set the SelectMode property to vikEffectEllipse. Select the ellipse by setting the appropriate values for the bounding rectangle in the RectLeft, RectTop, RectRight, and RectBottom properties

When the SelectMode property is set to vikEffectPolygon or vikEffectEllipse, the InOut property should be set. When the SelectMode property is set to values other than vikEffectPolygon, please set the Points parameter to a dummy array or to NULL.

If successful the resulting raster image data is set in the LayerNo property (the ImageHandle property or the Layer(LayerNo).ImageHandle property. If unsuccessful, 0 is returned.

When the Caption, Message, and ButtonName properties are blank, the progress dialog box will not be displayed. When the progress dialog box is displayed, the percentage that the processing has completed will be shown in the dialog box.

Differences from the ImageKit 7/8/9/10 ActiveX

The parameters x, y have been changed to type TPoint
In Delphi, it is not necessary to pass the size of the array of x, y points.