Sharp (ImageKit Control/ Effect Method)

This method modifies sharpness in a raster image.

[Visual Basic] [ Boolean = ]imagekitcontrolname.Effect.Sharp(x As Long, y As Long, Points As Long, Level As Integer)

[Visual C++] [ BOOL = ]imagekitcontrolname.GetEffect().Sharp(long *x, long *y, long Points, short Level)

[VB.NET] [ Boolean = ]imagekitcontrolname.Effect.Sharp(ByRef x As Integer, ByRef y As Integer, Points As Integer, Level As Short)

[C#.NET] [ bool = ]imagekitcontrolname.Effect.Sharp(ref int x, ref int y, int Points, short Level)

Parameters

Name	Explanation
x	An array of x coordinate values defining points of a polygonal area on the image. (in pixels) *(see Note below)
y	An array of y coordinate values defining points of a polygonal area on the image. (in pixels) *(see Note below)
Points	The number of points defining the polygonal area on the image.
Level	Sets the degree of sharpness (from 0 to 100, sharpness increases as the level increases)
* NOTE for retrieving array values: In Visual Basic, if the array is defined as Dim x(0 To 2) As Long, then the arguments are returned in x(0). In Visual C++, pass the pointer to the first element in the array. In VB.NET, the arguments are returned in x(0). In C#.NET, the arguments are returned in x[0].

Return Value

Returns True (nonzero) if successful, otherwise returns False (0).

Explanation

The Sharp method modifies the sharpness of a raster image. As the Level parameter value increase the sharpness increases and the image becomes clearer.

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

Before executing the Sharp 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 0. Set the mask image handle in the MaskImageHandle property
To process the total image, set the SelectMode property to 1
To process the polygonal area on the image, set the SelectMode property to 2. Select the polygon by setting the appropriate coordinate values for the points of the polygon in two arrays, one array for the x coordinate values and one array for the y coordinate values. The pass these arrays to the x and y arguments of the Sharp method. 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 3. 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 values other than 2 (ikEffectPolygon), please set dummy arrays in the x and y parameters and set the Points parameter to 0.
When the SelectMode property is set to 2 or 3, the appropriate value must be set in the InOut property. 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.

For scripting languages and other programs that require variant types, or when using VB.NET or C#.NET in 64 bit builds, please refer to the SharpVariant method.