Hago Ziegler wrote: > Hi, > > things are getting better. See: > http://www.hagoschaos.de/gi27/line.html image no.5 > > I got it with the GUG-tutorial. The only thing I don't like at this > technique is, that original angels get rounded. > > What I don't really understand, is what the quickmask is doing. > When I follow exactly the steps that David Millet describes, I get no > result. Am I missing still something, for example to activate the layer > again at some point? > > Regards Hago
The quickmask is just a tool allowing to work on selections. A selection in gimp is a gray level image. It can be saved as such as a channel (look in the select menu). The interesting parts of this property are: 1- a selection is not just binary. Pixels can be 10% selected, 50% selected, etc. This is controlled by the feather/sharpen in the Select menu, and by the feathering options in some tools ("Select by color" comes to my mind). 2- it is possible to apply any filter to a selection! This is great, but not very known, mainly because it is not easily accessible in the interface. Unfortunately, there are no esay visual way to work with this property of the selection. The marching ants only show a binary limit of the selection. With gimp 1.2 (well 1.1.x to be correct), the developpers introduced a nice visual way to handle this: the quickmask. The selection is represented as a coloured semitransparent layer that can be painted on top of the image. It is presented here: http://www.xach.com/gimp/tutorials/quickmask/ Thus, one can say that the select->grow and select->shrink functions are actually more or less equivalent to applying a blur+levels or a dilate/erode to the channel/quickmask corresponding to the selection. Sincerely, Olivier. _______________________________________________ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user