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Groups > linux.debian.user > #212883
| From | peter@easthope.ca |
|---|---|
| Newsgroups | linux.debian.user |
| Subject | Re: Arrow annotation in GIMP. |
| Date | 2019-08-16 20:00 +0200 |
| Message-ID | <yvOG5-6CS-1@gated-at.bofh.it> (permalink) |
| References | <yuQJX-1ji-1@gated-at.bofh.it> <yv0zD-7ON-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Dan Ritter Date: Wed, 14 Aug 2019 08:26:18 -0400 > Set the background to transparent. Menus: Layer > Tranparency > Add Alpha Channel. The new viewer remains black. Might be transparent. Might not. (If all else fails, will see what happens when the arrow is dropped on the image layer. If the result has the appearance of the arrow layer, the arrow background is not transparent and my image is obscured.) Really I don't understand the representation used in GIMP. From what I've read, there are three channels, R, G, B. OK. Plus an optional 4th, alpha. What is it? What is the point of alpha? Transparent should be simply no marking. RGB = (0,0,0). What does alpha represent? Thanks, ... P. -- https://en.wikibooks.org/wiki/Oberon Tel: +1 604 670 0140 Bcc: peter at easthope. ca
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Arrow annotation in GIMP. peter@easthope.ca - 2019-08-14 04:00 +0200
Re: Arrow annotation in GIMP. Dan Ritter <dsr@randomstring.org> - 2019-08-14 14:30 +0200
Re: Arrow annotation in GIMP. peter@easthope.ca - 2019-08-16 20:00 +0200
Re: Arrow annotation in GIMP. <tomas@tuxteam.de> - 2019-08-16 20:30 +0200
Re: Arrow annotation in GIMP. Tom Browder <tom.browder@gmail.com> - 2019-08-14 18:50 +0200
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