User Guide

170 Fireworks JavaScript API
Example
The following command creates a graphic symbol from the selected item and names it “star”:
fw.getDocumentDOM().convertToSymbol("graphic", "star");
See also
dom.convertToAnimSymbol(), dom.convertAnimSymbolToGraphicSymbol()
dom.convolveSelection()
Availability
Fireworks MX 2004.
Usage
dom.convolveSelection( kernelWidth, kernelHeight, kernelValues,
affectsAlpha)
Arguments
kernelWidth An integer that defines the width of the filter coefficients.
kernelHeight An integer that defines the height of the filter coefficients.
kernelValues An array of integers that defines the values for specific filter patterns.
affectsAlpha A Boolean value: true means the convolution filter affects the transparency
of the bitmap;
false means that the bitmap transparency isn’t affected by the filter.
Returns
Nothing
Description
Applies convolution, or irregular, filters to the selected bitmap based on the pattern defined by
the argument values.
Example
The following example applies an edge-detection filter to the bitmap:
// width of convolution kernel
var w = 3;
// height of convolution kernel
var h = 3;
// Edge detection kernel
var k = new Array(0, 1, 0, 1, -4, 1, 0, 1, 0);
fw.getDocumentDOM().convolveSelection(w, h, k, false);