Parameters
| Name | Explanation |
|---|---|
| x | An array of x coordinate values defining points of a polygonal area on the image. (in pixels) * |
| y | An array of y coordinate values defining points of a polygonal area on the image. (in pixels) * |
| Red | Reverses the red component of the RGB value (False(0): does not reverse value, True( nonzero): reverses value) |
| Green | Reverses the green component of the RGB value (False(0): does not reverse value, True( nonzero): reverses value) |
| Blue | Reverses the blue component of the RGB value (False(0): does not reverse value, True( nonzero): reverses value) |
| * In Visual C++, pass the pointer to the first element in the x and y arrays. In Visual Basic, the arguments are returned in the first elements of the arrays x(0) and y(0). |
|
Return Value
Returns True (nonzero) if successful, otherwise returns False (0).
Explanation
The RGBRevVariant method reverses the RGB values of a
raster image. If the Red, Green, or Blue parameters are True, then
that component of the RGB value is reversed. So, for example, the
reverse of a red component = 255 would be a red component = 0. (Red
= 255 - Red). This method is recommended when using scripting or
other languages that require variant types.
To execute the RGBRevVariant method, set the image handle of
the image in the ImageHandle property or the
Layer(LayerNo).ImageHandle
property. The RGBRevVariant method supports 1, 4, 8, 16, 24,
and 32 bit images.
Before executing the RGBRevVariant 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 RGBRevVariant 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.
When the SelectMode property
is set to 2 or 3, the appropriate value must be set in the InOut property. When a 1, 4, or 8 bit image
is processed, the total image will be processed regardless of the
value set in the SelectMode
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.
Also see the RGBRev method.