Re: [Gimp-developer] gimp-python: checking if point is in selection
Am Freitag, 2. Juni 2006 19:44 schrieb [EMAIL PROTECTED]: Quoting Sebastian Breuers [EMAIL PROTECTED]: i wondered if there is a possibility to check, if a point is in a given selection by using an internal gimp function. If it's not, could someone give me a hint, how to achieve this in creating an own function? I don't use Python-fu but the following Script-fu function should be easily ported (or perhaps you can find a better way): (define (point-in-selection image x y) (let* ( (saved (car (gimp-selection-save image))) (return-value) ) (gimp-rect-select image x y 1 1 CHANNEL-OP-INTERSECT 0 0) (set! return-value (car (gimp-selection-is-empty image))) (gimp-selection-load saved) (if (= return-value 0) 1 0 ) ) ) Hi. thanks for the tip. works fine. seb Note that the selection does not include the points at the rightmost and bottommost edges. For example, if the selection is from (0,0) to (10,10) then the point (10,10) is *not* in the selection but (9,9) is. You may need to adjust things to account for this. ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
[Gimp-developer] Gimp-python: Artefacts when creating layer
[EMAIL PROTECTED] The plug-in, I'm writing, creates a number of layers, every layer receives an object, for example a circle (created by ellipse selection, an selection fill), but somewhen, don't know why, the layer contains not only the desired circle but also some artefacts. Stripes, areas of white, the mouse cursor, things they should not be there. Is that a problem that can be solved by a certain programmable handling or do I have to remove these artefacts by hand? seb ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
Re: [Gimp-developer] Gimp-python: Artefacts when creating layer
Am Samstag, 3. Juni 2006 16:58 schrieb Joao S. O. Bueno Calligaris: On Saturday 03 June 2006 09:53 am, Simon Budig wrote: Alan Horkan ([EMAIL PROTECTED]) wrote: On Sat, 3 Jun 2006, Simon Budig wrote: That sounds as if you don't clear the layer before you use it for the first time. Layers created from a Plugin are not initialized from the very beginning. They need to be cleared using e.g. gimp_drawable_fill. Thanks a lot, that helped. Did it with: newLayer.fill(TRANSPARENT_FILL) seb I remember getting caught out by this too. Why is necessary to manually clear a new layer rather than have it done automatically? I have no strong opinions on that. I guess the reasoning behind this behaviour was a speed optimization: If a plugin later renders stuff to a new layer anyway it would be a waste of time to clear it automatically. If it doesn't it would just invoke gimp_drawable_fill. No harm done, except that you have to know about it. It might even matter for big images... For C plug-ins that might be true. However, python plug-ins are not good in dealing directly with pixels - that is, for rendering things. I guess the python api for creating a layer could create an empty one with no problems. Regards, JS -- Bye, Simon ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer -- Sebastian Breuers Huhnsgasse 53 50676 Köln Tel: 0221-2954235 Mobil: 0179-7841404 Mail: [EMAIL PROTECTED] ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
[Gimp-developer] gimp-python: checking if point is in selection
[EMAIL PROTECTED] i wondered if there is a possibility to check, if a point is in a given selection by using an internal gimp function. If it's not, could someone give me a hint, how to achieve this in creating an own function? seb Mail: [EMAIL PROTECTED] ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
Re: [Gimp-developer] gimp-python: checking if point is in selection
Am Freitag, 2. Juni 2006 19:54 schrieben Sie: Hi, On Fri, 2006-06-02 at 13:48 +0200, Sebastian Breuers wrote: i wondered if there is a possibility to check, if a point is in a given selection by using an internal gimp function. If it's not, could someone give me a hint, how to achieve this in creating an own function? Use gimp-image-get-selection to get the selection mask and check the value of the pixel you are interested in. Hi, Sven, i've already found the selection function, but could you tell me how to check the value of the pixel? Sven seb ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
