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Re: [Opengrads-devel] Proof of concept: grads 2.0.a3 100% under JVM
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From: Arlindo da S. <da...@al...> - 2008-12-17 15:19:13
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On Mon, Dec 15, 2008 at 4:10 PM, Love, Mr. Gary, Contractor, Code 7542 < gar...@nr...> wrote: > Brian, Arlindo, > > I believe Pedro's code is at ftp://www.iges.org/grads/gaserv/ > This is very helpful, I shall be able to reuse some of this code, although I have a much simpler problem. Does anybody know Pedro whereabouts? Arlindo > > Gary > > > -----Original Message----- > From: Brian Doty [mailto:do...@co...] > Sent: Saturday, December 13, 2008 3:29 AM > To: Arlindo da Silva > Cc: ope...@li... > Subject: Re: [Opengrads-devel] Proof of concept: grads 2.0.a3 100% under > JVM > > Hi Arlindo, this seems to have potential implications for the GDS. > Regarding java graphics, there are no doubt some nice libraries out > there these days but I have not been keeping up with that area. > Pedro Tsai, about 10 years ago, wrote a grads client/server setup in > java which included some graphics output of the grads graphics > primitives (this was a precursor to the GDS). I have that code around > somewhere and I can find it if you think it might be useful for this. > You don't need to support a whole lot to get most of the graphics output > working. > > Take a look in gxmeta.c, at function gxhdrw. It redraws the internal > buffer and draws all the primitives. Look at the code starting with the > comment "Get message type". If you support color, polygon, rectangle > (separate from polygon for performance), and line drawing, you get > almost all of the graphics. Line thickness is also nice (can easily be > soft generated too). > > Even though GrADS has been all X11 for a while now, it didn't start that > way and I have wanted to avoid being locked into that, thus this fairly > simple interface has survived. I don't expect to redesign this in any > substantial way but I do want to add text strings and font selection as > new primitives (with appropriate fall-back to the Hershey fonts when > needed). Anyone out there still using gv32? It's not going to work > much longer.... Brian > > On Dec 12, 2008, at 11:17 PM, Arlindo da Silva wrote: > > > All, > > > > I just refreshed > > > > http://opengrads.org/devel/grads2/grads.jar > > > > It is getting quite functional now: grib-1, grib-2, netcdf, hdf, > > printim. Still no readline, x11 or opendap; see output of "q config" > > below. This is all 100% java (no JNI), it should run anywhere. > > > > Brian: I know you are thinking about redesigning the graphical engine > > > in grads. Do you have any thoughts on how one could handle the > > graphics in Java? Currently, I have gxX.c stubbed out. I was thinking > > about implementing "gxX.c" in java around JPanel. > > > > Arlindo > > > > > > ga> q config > > Config: v2.0.a3.oga.2dev big-endian printim grib2 netcdf hdf4-sds Grid > > > Analysis and Display System (GrADS) Version 2.0.a3.oga.2dev Copyright > > (c) 1988-2008 by Brian Doty and the Institute for Global Environment > > and Society (IGES) This program is distributed WITHOUT ANY WARRANTY > > See file COPYRIGHT for more information. > > > > Built Sat Dec 13 00:32:59 BRST 2008 for mips-unknown-elf > > > > This version of GrADS has been configured with the following options: > > o Built on a BIG ENDIAN machine > > o Command line editing DISABLED > > o printim command for image output ENABLED > > http://www.zlib.net > > http://www.libpng.org/pub/png/libpng.html > > http://www.libgd.org/Main_Page > > o GRIB2 interface ENABLED > > http://www.ijg.org > > http://www.ece.uvic.ca/~mdadams/jasper<http://www.ece.uvic.ca/%7Emdadams/jasper> > > http://www.nco.ncep.noaa.gov/pmb/codes/GRIB2 > > g2clib-1.0.5 > > o NetCDF interface ENABLED > > http://www.unidata.ucar.edu/software/netcdf > > netcdf "3.6.2" of Dec 11 2008 22:17:25 $ > > o NCSA HDF interface ENABLED > > http://hdf.ncsa.uiuc.edu > > HDF4.2r3 > > o Athena Widget GUI DISABLED > > o OPeNDAP gridded data interface DISABLED > > o OPeNDAP station data interface DISABLED > > > > > > > > > > > > On Thu, Dec 11, 2008 at 12:38 AM, Arlindo da Silva > > <da...@al...> wrote: > > Hi, > > > > I was able to created a prototype build of grads v2 that runs > > entirely under the JVM: > > > > http://opengrads.org/devel/grads2/grads.jar > > > > To try it out: > > > > java -cp grads.jar grads > > > > Most external libraries have been disabled at this point, even X. > > However, you can do things like > > > > ga> open model.ctl > > ga> d ts > > ga> print ts.eps > > > > It feels quite usable on my MacPro laptop, speed-wise I mean. What do > > you think? Here is the best part of it: > > > > numer of grads source code lines modified: 0, except for the > > replacing gxX.c with the attached stubs. > > number of build script lines modified: 0 > > > > Jennifer: you may want to carry the gxX.c stubs along with the sources > > > code and have a --disbale-X11 during configure. This is very useful to > > > create binaries for machines that do not provide X11 (say many > > computer centers disable X11 at the compute nodes). > > > > Here is the tool that I used: > > > > http://nestedvm.ibex.org/ > > > > Building this gcc toolchain on Mac OS X 10.5 is kind of tricky, talk > > to me before attempting to do it yourself. I'll post notes about it at > > > some point. It may be simpler on Linux, but I have not tried it > > myself. > > > > Beware: this is rough, just a proof of concept for now; however I'd be > > > interested in hearing about problems. Soon we may be able to run grads > > > on cell phones. > > > > Arlindo > > > > > > -- > > Arlindo da Silva > > da...@al... > > > > > > > > -- > > Arlindo da Silva > > da...@al... > > > ------------------------------------------------------------------------ > ------ > SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, > Nevada. > The future of the web can't happen without you. Join us at MIX09 to > help > pave the way to the Next Web now. Learn more and register at > http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix. > com/<http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/> > _______________________________________________ > Opengrads-devel mailing list > Ope...@li... > https://lists.sourceforge.net/lists/listinfo/opengrads-devel > -- Arlindo da Silva da...@al... |
