Hi Olly - Thanks for the hints! I was able to get several sketches combined in GIMP. Looking at the result, it is very obvious that much more work is required in the cave. There is a huge hole in the middle which has no detail at all. There are missing walls in several places.
My plan now is to print the combined sketches on a piece of paper. The next survey trip I will draw more on it. That will then become the background in Therion. The room is not so big as to be a problem in Therion. It would probably fit in a bounding box 25 meters on a side. That is a large scrap, but I think it should be no problem to draw. The two entrances to the room are well-defined, so adding it to the map will be fairly easy. ======== Bill Gee On Monday, June 21, 2021 6:24:28 PM CDT Olly Betts wrote: > On Mon, Jun 21, 2021 at 04:31:45PM -0500, Bill Gee wrote: > > Now I need to figure out how to set transparency on each layer. > > Bring up the Gimp "Layers" dialog (shortcut key is Ctrl+L) and you can > click on each layer and drag the "Opacity" slider to make them partly > transparent. Or you can change the mode on each layer to "Darken only" > and the result will be the darkest part of any layer, which is probably > what you're after (assuming your sketches are dark lines on a white > background). > > > I wonder if Bruce's faint memory about setting transparency with an > > external editor worked because of using PNG format? My own faint > > memory is that xTherion uses different libraries to handle png and jpg > > files. Handling of transparency is probably a feature of the image > > library rather than xTherion. > > I don't think the standard JPEG format supports transparency. > > Cheers, > Olly > _______________________________________________ Therion mailing list [email protected] https://mailman.speleo.sk/listinfo/therion
