Re: Repairing a pixellated drop-shadow gradient

"brynn" <[email protected]> Sun, 14 Apr 2019 14:53:39 -0600
Newsgroups gmane.comp.graphics.inkscape.user
Message-ID <1A009BB9B7D9466F8AEE690242DDC2FF@brynnPC>
Hi Peter,
        We'd need to see the PDF or SVG file, to be able to give specific 
instructions.  Generally, you would use the status bar to find out which objects 
are raster and which are vector.   When you select something with the Selection 
tool, the status bar tells you what kind of object it is.  If the status bar 
says "Image...." it's a raster object.  If it says "Path....", it's vector.  If 
it says "Group...." you need to look inside the group.

        Then replace the rasterized objects.  I wouldn't delete the rasterized 
drop shadow right away, because you can use it to get the right color for the 
new shadow.

        There are a couple of ways to realize a drop shadow.  The easiest way is 
Filters menu > Shadows and Glows > Drop Shadow.  Although you might have to 
tweak the filter to get the color right.  (I say "might" because I don't 
remember exactly how it works.) (If it's not obvious, and you want to use it, 
just ask us.)

        Less easy would be to duplicate the object, move it below the original, 
move it slightly down and/or over (i.e. drop it), then retrieve the color from 
the old shadow and fill the duplicate object.  Then add a simple blur to it.

        If you'd like specific instructions, please share the SVG or PDF file.

All best,
brynn

-----Original Message----- 
From: Peter Flynn
Sent: Sunday, April 14, 2019 6:29 AM
To: [email protected]
Subject: [Inkscape-user] Repairing a pixellated drop-shadow gradient

I have inherited a vector PDF and an SVG file of a logo made from
outlined letters with a gradated drop-shadow (see
http://xml.silmaril.ie/downloads/letterlogo.png for enlarged PNG fragment).

When the logo is enlarged (eg for use on a poster), the drop-shadow
shows up pixellated. Both files exhibit the identical problem. When
edited, the drop-shadow is indeed made up of pixels. I assume in my
ignorance that it was passed through some software at some stage in its
past which concretized the drop-shadow as graded pixels.

How would I go about removing the drop-shadow entirely, and replacing it
with one of identical color and extent, but done in such a way as to
withstand enlargement without deterioration?

Peter


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