Paul: Thanks, I’m trying it out. Of course, I won’t be able to tell if it solves the problem until the next student has a problem, but it’s a good idea anyway. Unfortunately, due to the way I’ve set up the data plotting, it’s going to be a fairly big job. I rely heavily on screen capture, but it’s most likely worth the modifications. Regards, Bill
> On Aug 3, 2015, at 7:42 PM, Paul Hibbert <p...@livecode.org> wrote: > > Bill, > > I’ve done a few tests and it appears to me that "from rect” still relies on > the screen output from the computer, whereas “from object” allows LC to > render an image of an object independent of the screen hardware. > > Try this: > > Move your stack so the map image is half off the screen, then make the > snapshot, the image doesn’t render completely, this suggests to me that the > app is accessing a screen representation of the image rather than using LC’s > internal rendering, so 'I think' changing the snap routine to make a snap > from say a group of the map and it’s associated data may cure the problem. > > eg. export snapshot from group “mapAndData” to image “mapSnap” — then try the > test above again. > > Paul > > >> On Aug 3, 2015, at 16:22, William Prothero <proth...@earthednet.org> wrote: >> >> Paul: >> Thanks for the hint. I do use the newer “from” syntax. >> export snapshot from rect snapRect to image "mapSnap" >> >> Thanks, >> Bill >> >>> On Jul 31, 2015, at 3:35 PM, Paul Hibbert <p...@livecode.org> wrote: >>> >>> Bill, >>> >>> I’ve just read the following explanation from RG relating to another >>> snapshot problem and wondered if it also relates to your student’s problems… >>> >>>> >>>> The "from" option renders the object into a new buffer set up just for the >>>> snapshot, while the older "of" syntax grabs the object's rect from the >>>> composite screen buffer. >>>> >>>> LiveCode renders only the content region of a window but the window itself >>>> is rendered by the OS, so it has no choice but to obtain that image from >>>> the screen buffer. >>>> >>>> -- >>>> Richard Gaskin >>>> Fourth World Systems >>>> Software Design and Development for the Desktop, Mobile, and the Web >>>> ____________________________________________________________________ >>>> ambassa...@fourthworld.com http://www.FourthWorld.com >>> >>> When I first read your post I wondered if the problem could be due to low >>> grade or incompatible video cards in the affected machines, if that’s the >>> case then the above explanation would make sense, to me at least. >>> >>> So, the question is, does your "export snapshot" script use the “from” or >>> “of” option? >>> >>> If it’s the “of” option then switching to the “from” option may fix the >>> problem your students are seeing. >>> >>> Just a thought. >>> >>> Paul >>> >>> >>>> On Jul 16, 2015, at 14:07, William Prothero <proth...@earthednet.org> >>>> wrote: >>>> >>>> Folks: >>>> I have an application that is being used by a class of Earth Science >>>> students and get failure reports from two who use Windows 8. One lives in >>>> Australia and one lives in Japan. The app works fine on Macintosh. I’ve >>>> also tested it on my own installation of both Windows 8.1 and 7, 32 bit >>>> and 64 bit versions. I can’t get the reported pixellation of the map and >>>> screen. >>>> >>>> I’m wondering if it is something related to foreign installations. The >>>> symptom is extreme pixellation of images captured with the "export >>>> snapshot” command. I live in the US. >>>> >>>> So, I wonder if somebody with Windows 8 would be willing to download the >>>> app and try it, and perhaps give me an idea of what might be going on. If >>>> it’s a bug in “snapshot”, it would be important to be reported and fixed. >>>> Otherwise, I’m pretty stuck on figuring out what is going on. >>>> >>>> Here are links: >>>> Windows zip file of the app: >>>> <https://www.dropbox.com/s/lsn087vrhstxvg4/PT_Explorer-Windows.zip?dl=0> >>>> Pixellated Image sent by a student >>>> <https://www.dropbox.com/s/m2frv9i0dg7mxtp/Explorer%20in%20Windows%208.1.pdf?dl=0> >>>> >>>> Thanks for any help or feedback you can give me. >>>> >>>> Regards, >>>> Bill >>>> >>>> >>>> William A. Prothero >>>> http://es.earthednet.org/ >>>> >>>> _______________________________________________ >>>> use-livecode mailing list >>>> use-livecode@lists.runrev.com >>>> Please visit this url to subscribe, unsubscribe and manage your >>>> subscription preferences: >>>> http://lists.runrev.com/mailman/listinfo/use-livecode >>> >>> Regards, >>> >>> Paul Hibbert >>> p...@livecode.org >>> >>> >>> >>> >>> _______________________________________________ >>> use-livecode mailing list >>> use-livecode@lists.runrev.com >>> Please visit this url to subscribe, unsubscribe and manage your >>> subscription preferences: >>> http://lists.runrev.com/mailman/listinfo/use-livecode >> >> _______________________________________________ >> use-livecode mailing list >> use-livecode@lists.runrev.com >> Please visit this url to subscribe, unsubscribe and manage your subscription >> preferences: >> http://lists.runrev.com/mailman/listinfo/use-livecode > > > > Regards, > > Paul Hibbert > p...@livecode.org > > > > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
