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From: V. <gae...@en...> - 2005-05-08 20:14:59
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Hello again, I have just come back to my computer after being away one week and I have the pleasure to see that a openGl terminal in progress. I had been talk about with my brother who studies graphical engeneering and we had come to the conclusion that a openGL terminal would be a great interactive terminal to do 3D with gnuplot. As for my projects to rewrite the 2D code, I haven't made any progress at all. However I have decided to write a 2D povray terminal to get a proper understanding of gnuplot's code before I tackle the more difficult problem of reshaping it. This has done quite a lot of progress and it has given me a good idea of the work needed to adapt the existing gnuplot code to 3D. I'll post the first draft of this terminal in a few days (I have just broken color support by adding RGB color). -- Ga=EBl |
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From: V. <gae...@no...> - 2005-08-16 11:46:00
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I have made good progress on the povray terminal. I have updated it on the web :=20 http://www.eleves.ens.fr/home/varoquau/gnuplot/povray.trm You can also find an automatically generated list of demo files and output at : http://www.eleves.ens.fr/home/varoquau/gnuplot/index.html This was automatically generated using a modified version of the webify script. My perl skills are really horrible, so some files did not compile properly. This does not always mean that the povray terminal fails on them (I checked manually in certain case). As you can see the povray terminal is almost a fully featured gnuplot terminal. I have yet add the support for 'set palette maxcolors', nor even have I looked into that :->, but I do not think it is a major difficulty. I would appreciate if other people could have a look at the code, and report any bugs they find, I would like to move on to the 3D code. I will be gone on holidays and September means, unfortunately, the start of the teaching period, so I will be quite short on time, but I think that I will want to start hacking gnuplot's code to add 3D. Any suggestions on the way to proceed with this are welcomed. I would also like some advise on how to work collectively on gnuplot's code, as I want to be able to work closely with others (Robert ?) on that. This seems to me as a huge project but I think we really must go ahead and do it. -- Ga=EBl |
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From: Daniel J S. <dan...@ie...> - 2005-08-16 16:11:38
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Ga=EBl Varoquaux wrote: > I have made good progress on the povray terminal. I have updated it > on the web :=20 > http://www.eleves.ens.fr/home/varoquau/gnuplot/povray.trm >=20 > You can also find an automatically generated list of demo files and > output at : > http://www.eleves.ens.fr/home/varoquau/gnuplot/index.html >=20 > This was automatically generated using a modified version of the > webify script. My perl skills are really horrible, so some files did no= t > compile properly. This does not always mean that the povray terminal > fails on them (I checked manually in certain case). Very good start Ga=EBl. The "set pm3d at bstbst (funny combination, only= for screen or postscript)" example is a bit off. Also, in "image.dem" y= our gray scale looks to be off a bit. (Color scale looks about right.) = Take a look at "As with 3d color surfaces, a color box may be added to th= e plot". Your scale going from 0 to 256 appears to not have much white o= r not very light near the top end. Furthermore, if you look at Tux, he's= very light colored compared to the color box scale. Something is off I = think. Looks good overall, though. Dan |
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From: Hans-Bernhard B. <br...@ph...> - 2005-08-16 16:25:53
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Daniel J Sebald wrote: > Very good start Ga=EBl. The "set pm3d at bstbst (funny combination, on= ly=20 > for screen or postscript)" example is a bit off. Also, in "image.dem" = > your gray scale looks to be off a bit. (Color scale looks about=20 > right.) Take a look at "As with 3d color surfaces, a color box may be = > added to the plot". Your scale going from 0 to 256 appears to not have= =20 > much white or not very light near the top end. Furthermore, if you loo= k=20 > at Tux, he's very light colored compared to the color box scale. =20 > Something is off I think. That would almost certainly be a problem of gamma correction being=20 applied/reverted the wrong number of times (off by one, typically, but=20 worse things have happened...) in total. POVray almost certainly=20 assumes linear RGB, whereas gnuplot would be used to native screen RGBs. |
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From: Robert H. <en...@no...> - 2005-05-09 13:07:51
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On Sun, 2005-05-08 at 22:14 +0200, Ga=EBl Varoquaux wrote: > I have just come back to my computer after being away one week and I > have the pleasure to see that a openGl terminal in progress.=20 btw. I have posted the opengl terminal to the patch tracker on sourceforge. It's been updated a bit since I last posted it here. It would be good to get feedback from anybody who's managed to compile it and use it. I look forward to hearing your suggestions concerning extending gnuplot to do real 3D. I've had a few ideas myself, but I'm wary of taking on anything that big alone. I think there may well be cases where we would need to redesign some existing "features" in order to get them to sit well with an alternative terminal interface. The first one that springs to mind is multiplot. I have to say I had never used this feature before I started writing my terminal driver, and I found it quite difficult to get to work even with the way I had implemented opengl as a 2D driver. Rob --=20 Robert Hart <en...@no...> University of Nottingham This message has been checked for viruses but the contents of an attachment may still contain software viruses, which could damage your computer system: you are advised to perform your own checks. Email communications with the University of Nottingham may be monitored as permitted by UK legislation. |
