Using IlvFilteredGraphic to Apply Filter Flows to Graphic Objects

Foundation > Image Processing Filters > IlvBitmapFilter: The Image Processing Class > Using IlvFilteredGraphic to Apply Filter Flows to Graphic Objects

The Rogue Wave® Views foundation package provides a simple way to apply filter flows to graphic objects: the IlvFilteredGraphic class.

This class encapsulates a graphic object and internally computes an IlvBitmapData from the draw method of the object. It then applies a given filter flow to this IlvBitmapData and draws the result on the screen. It is then very easy to add image processing effects to vectorial objects.

Sample code:

IlvZoomableLabel* embosssource = new IlvZoomableLabel(display,

IlvPoint(100, 100),

"Views");

embosssource->setForeground(display->getColor((IlvIntensity)(5 * 255),

(IlvIntensity)(5 * 255),

(IlvIntensity)(56 * 255)));

embosssource->setFont(display->getFont("%Helvetica-75-"));

IlvFilteredGraphic* emboss = new IlvFilteredGraphic(display,

embosssource,

"standard.xml#DropShadow",

IlTrue);

Many predefined filter flows are provided in the Rogue Wave Views distribution in the $ILVHOME/data/filters directory. You can use them interactively with the Rogue Wave Views Studio application.

Version 5.8