| Introduction to Effects | ||
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Effects are an operation which can be applied to images. They include common and useful functions like blur and sharpen filters.
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Basics
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Effects are applied using the EffectOperation class. To apply an effect you can use code as simple as this.
void function() {
using (Doc doc = new Doc()) {
AddImagePage(doc, img5);
using (ImageLayer layer = AddImagePage(doc, img5)) {
using (EffectOperation effect = new EffectOperation("Sharpen")) {
effect.Apply(layer.PixMap);
}
}
doc.Rendering.Save("EffectSharpen1b.jpg");
}
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Examples
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The examples make use of a function named AddImagePage. This function simply creates an appropriate Doc object, adds the image and returns the ImageLayer which was added.
private ImageLayer AddImagePage(Doc doc, string path) {
using (XImage img = XImage.FromFile(path, null)) {
doc.MediaBox.SetSides(0, 0, img.Width, img.Height);
doc.Page = doc.AddPage();
doc.Rect.String = doc.MediaBox.String;
int id = doc.AddImageObject(img);
return (ImageLayer)doc.ObjectSoup[id];
}
}
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