On 09/14/2011 12:00 PM, photogenius_uk wrote:

Can anyone help with this please? I want to be able to crop to an accurate circle to make an insert for glass paperweights. Any suggestions would be rear with great interest! Thanks! Using Gimp with Windows by the way.

I don't think you can actually "crop" to a circle.

However, getting the result you want is very easy and quick.

1) CHANGE BACKGROUND to white. (In toolbox, you may have to click the black/white mini-icon to set the colors to black/white, and then you may have to click the double-arrow mini-icon to reverse foreground and background colors.)

2) SELECT a circle using the oval-shaped (it's really a circle in it's normal incarnation) selection tool located to the right of the rectangular selection tool.

3) INVERT the selection (in the menu: Select, Invert).

4) DELETE the selection (type the DEL/DELETE key on your keyboard). If the result is black surrounding your image area, then UNDO (ctrl-z) and start over at step 1 to get the background white instead of black.

I suspect that there are more sophisticated ways to do this, but the above works fine for me.

Jay

photogenius_uk wrote:

Can anyone help with this please? I want to be able to crop to an accurate circle to make an insert for glass paperweights. Any suggestions would be rear with great interest! Thanks! Using Gimp with Windows by the way.

Use the Ellipse tool to select the part you want. Invert the selection (Image: Select -> Invert or Ctrl+I). Cut the selection (Image: Edit -> Cut or Ctrl+X).

Select circle, invert selection, delete

HTH

--- (Apologies for brevity, top posting and poor citation - this email was sent from a mobile device) ---

Gidday,
Not really proficient at it myself, but had a quick crack at it just now, seems achievable:
could you do something by adding a layer mask (set to full transparency), draw a circle on that (hold shift to keep it as circle, not oval), fill circle with white (equals full opacity) and then you should see the image underneath fitting neat in the circle? save it as desired image from there...

maybe have to try moving/resizing circle after you can see through, or start with mask as opaque and make transparent circle then invert it?? not sure if this is easy/possible.

not sure if similar can be achieved with alpha channels, ?? something to try I guess. I'm still novice on that.

regards, shane.

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Date: Wed, 14 Sep 2011 18:00:22 +0200 From: photogenius_uk
Subject: [Gimp-user] cropiing to a circle To: gimp-user@lists.XCF.Berkeley.EDU Cc: team@gimpusers.com
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Can anyone help with this please? I want to be able to crop to an accurate circle to make an insert for glass paperweights. Any suggestions would be rear with great interest! Thanks! Using Gimp with Windows by the way.

At 12:00 PM 9/14/2011, photogenius_uk wrote:

Can anyone help with this please? I want to be able to crop to an accurate circle to make an insert for glass paperweights. Any suggestions would be rear with great interest! Thanks! Using Gimp with Windows by the way.

How about selecting a circle, inverting the selection and then clearing that part from the image, then when you print it on paper you can just cut it out and use as you plan?

Matt