transparent metafun colors turn nearly black
Just for (meta)fun, I tried a few experiments with transparent colors. The example below gives a black circle instead of a red one. Is it that transparent colors aren't part of metafun -- which I can easily live with since color printing is too expensive still, alas -- or have I omitted an essential command? ==================== cut here ==================== \runMPgraphicstrue \setupcolors[state=start] \starttext \startreusableMPgraphic{a} % _inline_specials_ := true; % had hopes for this line, but no luck % next line taken as an example from mp-spec.mp fill fullcircle scaled 10cm withcolor transparent(8,.3,red); \stopreusableMPgraphic \placefigure[force,none]{}{\reuseMPgraphic{a}} \stoptext ==================== cut here ==================== The metapost output (testfile-mpgraph.1) always contains the following color setting, no matter what arguments I pass to transparent() : 0.123 0.003 0.001 setrgbcolor Which is close to black. (This is all with ConTeXt 2006.08.08. The live ConTeXt gives a square saying "undefined".) -Sanjoy `A society of sheep must in time beget a government of wolves.' -- Bertrand de Jouvenal
Hi Sanjoy, Sanjoy Mahajan wrote:
Just for (meta)fun, I tried a few experiments with transparent colors. The example below gives a black circle instead of a red one. Is it that transparent colors aren't part of metafun -- which I can easily live with since color printing is too expensive still, alas -- or have I omitted an essential command?
No, as your example works here (beta 17.09.). I also tried your example at contextgarden (same beta) and it worked too (using Firefox). Maybe you also need \runMPTEXgraphicstrue (enabled in my cont-sys.tex)? Greetings, Peter
==================== cut here ==================== \runMPgraphicstrue \setupcolors[state=start] \starttext \startreusableMPgraphic{a} % _inline_specials_ := true; % had hopes for this line, but no luck % next line taken as an example from mp-spec.mp fill fullcircle scaled 10cm withcolor transparent(8,.3,red); \stopreusableMPgraphic
\placefigure[force,none]{}{\reuseMPgraphic{a}} \stoptext ==================== cut here ====================
The metapost output (testfile-mpgraph.1) always contains the following color setting, no matter what arguments I pass to transparent() :
0.123 0.003 0.001 setrgbcolor
Which is close to black.
(This is all with ConTeXt 2006.08.08. The live ConTeXt gives a square saying "undefined".)
-Sanjoy
`A society of sheep must in time beget a government of wolves.' -- Bertrand de Jouvenal _______________________________________________ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
Maybe you also need \runMPTEXgraphicstrue (enabled in my cont-sys.tex)?
I just enabled that in cont-sys.rme, and I put it in the test file for good measure.
your example works here (beta 17.09.). I also tried your example at contextgarden (same beta) and it worked too (using Firefox).
Thanks for checking it both ways. Now I'm really puzzled because I also use Firefox (on Linux). I just ran the file below at contextgarden (same one as before but with the MPTEX addition), and it gives 'undefined' in a square where the figure should be. And on my Ubuntu laptop with context 2006.08.08 it gives a large black circle. I also tried the old perl texexec in case that helped but no luck. The texexec log on contextgarden looks okay. It generates texexec-mpgraph.1 and embeds one figure, so I'm guessing the figure is generated and inserted. So I don't understand why the generated PDF file is not right. To make sure it wasn't a caching problem, I added a bit of text to the end, to see whether the new PDF file had it (it did). \runMPgraphicstrue \runMPTEXgraphicstrue \setupcolors[state=start] \starttext \startreusableMPgraphic{a} fill fullcircle scaled 10cm withcolor transparent(1,0.5,green) ; \stopreusableMPgraphic \placefigure[force,none]{}{\reuseMPgraphic{a}} \stoptext -Sanjoy
Sanjoy Mahajan wrote:
Maybe you also need \runMPTEXgraphicstrue (enabled in my cont-sys.tex)?
I just enabled that in cont-sys.rme, and I put it in the test file for good measure.
your example works here (beta 17.09.). I also tried your example at contextgarden (same beta) and it worked too (using Firefox).
Thanks for checking it both ways. Now I'm really puzzled because I also use Firefox (on Linux). I just ran the file below at contextgarden (same one as before but with the MPTEX addition), and it gives 'undefined' in a square where the figure should be. And on my Ubuntu laptop with context 2006.08.08 it gives a large black circle. I also tried the old perl texexec in case that helped but no luck.
Mhh, I think Patrick is playing games with us ;) Your examples (old and new one) doesn't work anymore at contextgarden (black square with "unknown" text). The good news: it's still working here. Maybe I should stop testing your examples, as long as my system works ;) Just tried your old example *without* \runMPgraphicstrue and it worked again. This is really strange. Peter
The texexec log on contextgarden looks okay. It generates texexec-mpgraph.1 and embeds one figure, so I'm guessing the figure is generated and inserted. So I don't understand why the generated PDF file is not right. To make sure it wasn't a caching problem, I added a bit of text to the end, to see whether the new PDF file had it (it did).
\runMPgraphicstrue \runMPTEXgraphicstrue \setupcolors[state=start] \starttext \startreusableMPgraphic{a} fill fullcircle scaled 10cm withcolor transparent(1,0.5,green) ; \stopreusableMPgraphic
\placefigure[force,none]{}{\reuseMPgraphic{a}} \stoptext
-Sanjoy _______________________________________________ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
Hi, This all sounds like the 'missing specials' problem that is caused by conflicting -progname= arguments when using the web2c version of metapost. Make sure you do not have conflicting memory settings for both main_memory.mpost as well as main_memory.metafun The best is to remove all trace of '.mpost' and '.metafun' memory settings from your texmf.cnf, but at least make sure all the '.mpost' and 'metafun' values are the same . Then regenerate metafun using texexec --make, and all should be well again. Cheers, Taco
These were the memory setting in the /etc/texmf/texmf.d/95NonPath.cnf configlet that is part of Debian and Ubuntu: main_memory = 1000000 % words of inimemory available; also applies to inimf&mp main_memory.context = 1500000 main_memory.mpost = 1500000 I commented out the .mpost line (there was no separate metafun line, which I guess was getting the main_memory value of 1000000), regenerated the texmf.cnf with "update-texmf", then regenerated metafun with "texexec --make metafun" and transparency worked. So thanks for the magic! Have wikified the above in case anyone else runs into it http://wiki.contextgarden.net/Mpgraphic. (I wonder if the live context has been having the same problem?) -Sanjoy `Never underestimate the evil of which men of power are capable.' --Bertrand Russell, _War Crimes in Vietnam_, chapter 1.
On 9/24/06, Sanjoy Mahajan wrote:
These were the memory setting in the /etc/texmf/texmf.d/95NonPath.cnf configlet that is part of Debian and Ubuntu:
main_memory = 1000000 % words of inimemory available; also applies to inimf&mp main_memory.context = 1500000 main_memory.mpost = 1500000
I commented out the .mpost line (there was no separate metafun line, which I guess was getting the main_memory value of 1000000), regenerated the texmf.cnf with "update-texmf", then regenerated metafun with "texexec --make metafun" and transparency worked. So thanks for the magic!
Have wikified the above in case anyone else runs into it http://wiki.contextgarden.net/Mpgraphic.
(I wonder if the live context has been having the same problem?)
Yes. I tried to fix it after Taco reported the exact problem. Plese test if it's working now. If it isn't (i.e.: if I have broken something else) now at least you know who is to blame. Mojca
(I wonder if the live context has been having the same problem?)
I tried to fix it after Taco reported the exact problem. Plese test if it's working now.
Thanks, the live context works! I tested this file: \setupcolors[state=start] \starttext \startreusableMPgraphic{a} fill fullcircle scaled 10cm withcolor transparent(1,0.5,green) ; \stopreusableMPgraphic \placefigure[force,none]{}{\reuseMPgraphic{a}} \stoptext and a nice transparent green circle shows up. I also tested (overlapping transparent squares): \setupcolors[state=start] \starttext \startreusableMPgraphic{a} fill unitsquare scaled 1cm withcolor yellow; fill unitsquare shifted (0.5,0.5) scaled 1cm withcolor transparent(1,0.5,red); \stopreusableMPgraphic \placefigure[force,none]{}{\reuseMPgraphic{a}} \stoptext and it now works. -Sanjoy `Never underestimate the evil of which men of power are capable.' --Bertrand Russell, _War Crimes in Vietnam_, chapter 1.
Hello Sanjoy, [...]
(I wonder if the live context has been having the same problem?)
I tried to fix it after Taco reported the exact problem. Plese test if it's working now.
Thanks, the live context works! I tested this file:
Thank you and Mojca for testing and fixing things. Patrick (if things get important, please cc: me) -- ConTeXt wiki and more: http://contextgarden.net
participants (5)
-
Mojca Miklavec -
Patrick Gundlach -
Peter Rolf -
Sanjoy Mahajan -
Taco Hoekwater