Menu
▾
▴
Re: [Opengrads-devel] Proof of concept: grads 2.0.a3 100% under JVM
|
From: Arlindo da S. <da...@al...> - 2008-12-22 04:08:58
|
All,
Weekend update: I did some work on the Java graphics and added a
readline replacement. The graphics look quite descent, even nicer
than X on my Mac. I am using the same trick I used for gxyat: lines
are drawn with anti-aliasing, while polygon fills are not (or else you
get those funny horizontal lines).
I'd appreciate any feedback regarding performance compared to the C
version with *your* data on *your* platform. Of course, this is Java,
it is supposed to be slower. The queston is: is it usable?
Thanks,
Arlindo
On Fri, Dec 19, 2008 at 4:59 AM, Arlindo da Silva <da...@al...> wrote:
> On Thu, Dec 18, 2008 at 1:03 AM, pedro tsai <ped...@ya...> wrote:
>>
>> Dear Arlindo, Gary, Brian
>>
>> I apologized that I have been silent for many years. I went to do
>> commercial software in Silicon Valley since 2000 (except for 2003, when I
>> was laid-off during the last collapse of bubble, I was fortunate that I was
>> able to went back to Monterey to work on weather model for a year). Now
>> days, I work for IC chip design company (for cell phone chips, digital TV
>> chip, etc). That, pretty much sum up the last 8-9 years.
>>
>> Anyway, I think I still remember the GrADS code I work on with Brian.
>> Let me known if I can be of some help.
>
> Nice to hear from you! I have studied your code in the last couple of days
> (great job, BTW) and I have been able to extract the low level gxJ class
> that I needed
> for adding graphics to grads v2 under the JVM. The latest is here:
> http://opengrads.org/devel/grads2/grads.jar
>
> To run the main application:
> java -jar grads.jar
> For running the utilities,
> java -cp grads.jar gxeps myfile.gm
> It now has basic graphics with animation and double buffer; no widgets,
> though. I am pretty sure there are lots of fine tuning still to be done,
> since there are still many of the gxX() routines that are stubs. On my
> immediate list:
> - window resizing
> - grads-superpack.jar including fonts, map data, etc -- all that is needed
> to run grads
> - command line parsing, including initial window size
> - Jline (readline replacement)
> - Try to build opendap (or else wait for NetCDF-4)
> Anybody willing to help with the following?
> - Swing based console, IDE (?)
> - JNLP/web start
> - Eclipse plug in?
> Brian: I may need your help to implement the widget stuff.
> Let me known of bugs...
> Arlindo
>
>>
>> Pedro
>>
>>
>>
>>
>> --- On Wed, 12/17/08, Love, Mr. Gary, Contractor, Code 7542
>> <gar...@nr...> wrote:
>>
>> From: Love, Mr. Gary, Contractor, Code 7542
>> <gar...@nr...>
>> Subject: RE: [Opengrads-devel] Proof of concept: grads 2.0.a3 100% under
>> JVM
>> To: "Arlindo da Silva" <da...@al...>
>> Cc: "Brian Doty" <do...@co...>, ped...@ya...
>> Date: Wednesday, December 17, 2008, 2:47 PM
>>
>> Arlindo,
>>
>> Here's Pedro's email: ped...@ya.... It's been almost 10 years
>> since he wrote the Java-Grads code, I hope he remembers what he did.
>>
>> Good Luck,
>> Gary
>> ________________________________
>> From: arl...@gm... [mailto:arl...@gm...] On
>> Behalf Of Arlindo da Silva
>> Sent: Wednesday, December 17, 2008 7:19 AM
>> To: Love, Mr. Gary, Contractor, Code 7542
>> Cc: ope...@li...; Brian Doty
>> Subject: Re: [Opengrads-devel] Proof of concept: grads 2.0.a3 100% under
>> JVM
>>
>> 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.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/
>>> _______________________________________________
>>> Opengrads-devel mailing list
>>> Ope...@li...
>>> https://lists.sourceforge.net/lists/listinfo/opengrads-devel
>>
>>
>>
>> --
>> Arlindo da Silva
>> da...@al...
>>
>
>
>
> --
> Arlindo da Silva
> da...@al...
>
--
Arlindo da Silva
da...@al...
|
