| ToGrayscale Function | ||
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Converts the image to grayscale.
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Syntax
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[C#]
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Params
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Notes
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This allows you to convert an image to grayscale. It can be useful for preparing soft masks. This function is a convenience method for this common operation. A practically identical effect can be achieved using the Recolor method followed by Compress.
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Example
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Here we add an image in its natural color space and then, at a position down and to the right, converted to grayscale.
using var doc = new Doc();
doc.Rect.Pin = XRect.Corner.TopLeft;
doc.Rect.Magnify(0.5, 0.5);
string path = Server.MapPath("../mypics/mypic.jpg");
doc.AddImageFile(path, 1);
doc.Rect.Move(doc.Rect.Width, -doc.Rect.Height);
int i = doc.AddImageFile(path, 1);
var im = (ImageLayer)doc.ObjectSoup[i];
im.PixMap.ToGrayscale();
doc.Save(Server.MapPath("pixmaptograyscale.pdf"));
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