gl4java-usergroup

Re: [gl4java-usergroup] FAQ link broken

[Robert V. <f1...@gm...>]

On Thursday 20 June 2002 07:17, you wrote:
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>
> On Sunday 16 June 2002 12:09, Robert Voigt wrote:
> > On Saturday 15 June 2002 06:20, you wrote:
> > > -----BEGIN PGP SIGNED MESSAGE-----
> > > Hash: SHA1
> > >
> > > On Friday 14 June 2002 21:55, Robert Voigt wrote:
> > > > The FAQ on the GL4Java website contains a question without an answer:
> > > > My Canvas renders 1 frame, then stops, what's wrong ?
> > > > I'd really like to know that because I ran into that problem.
> > > > I followed the instructions about using the GLEventListener model,
> > > > and now this.
> > >
> > > ;-)
> > >
> > > FOR GLEventListener's: dont make current and/or free by your own,
> > > within the GLEventListener methods, implemented by your own.
> >
> > I don't call gljMakeCurrent() or gljFree(), nowhere. Still I get only one
> > frame, then my object disappears. I don't know what else I could try. I
> > did everything I could see in the gears demo.
>
> ok - then, please send a little demo (< 1MB)


I found the problem. It was me who messed it up :) I let it draw something 
that was smaller than 1 pixel. But there was a reason for being confused. 
When I startet the program I always got 1 frame with my geometry visible. So 
it was drawn with the wrong modelview matrix or whatever matrix, I don't know 
much about these matrices yet. 
I send a fixed version of my program. The object is now 25 pixels big, so it 
is visible. But you can still see that in the first frame it is drawn much 
bigger and somewhere else. I don't think that's a real problem, but it's 
interesting.

Re: [gl4java-usergroup] GL4Java Apps Make X "Go Away"

[Sven G. <sgo...@ja...>]

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puhh - sounds very funny

'cause you say, it (your configuration + opengl) works nice for 
native applications, well, gl4java must be one ingredient ..

well, i use an piii or athlon, linux 2.4.18+xfs (no SMB),
and the latest nvidia + the latest gl4java ..

may be you want to try the latest gl4java (cvs) ?

i guess its time to release the latest gl4java as a binary ..

cheers, sven
- -- 
health & wealth
mailto:sgo...@ja...
www   : http://www.jausoft.com ; pgp: http://www.jausoft.com/gpg/
voice : +49-521-2399440 ; fax : +49-521-2399442
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Re: [gl4java-usergroup] FAQ link broken

[Sven G. <sgo...@ja...>]

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On Sunday 16 June 2002 12:09, Robert Voigt wrote:
> On Saturday 15 June 2002 06:20, you wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> >
> > On Friday 14 June 2002 21:55, Robert Voigt wrote:
> > > The FAQ on the GL4Java website contains a question without an answer:
> > > My Canvas renders 1 frame, then stops, what's wrong ?
> > > I'd really like to know that because I ran into that problem.
> > > I followed the instructions about using the GLEventListener model, and
> > > now this.
> >
> > ;-)
> >
> > FOR GLEventListener's: dont make current and/or free by your own,
> > within the GLEventListener methods, implemented by your own.
>
> I don't call gljMakeCurrent() or gljFree(), nowhere. Still I get only one
> frame, then my object disappears. I don't know what else I could try. I did
> everything I could see in the gears demo.

ok - then, please send a little demo (< 1MB)


cheers, sven
- -- 
health & wealth
mailto:sgo...@ja...
www   : http://www.jausoft.com ; pgp: http://www.jausoft.com/gpg/
voice : +49-521-2399440 ; fax : +49-521-2399442
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Re: [gl4java-usergroup] Are we missing a glColorMask

[Sven G. <sgo...@ja...>]

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On Monday 17 June 2002 16:55, aNt wrote:
> There seems to only be a:
>
> gl.glColorMask(boolean, boolean, boolean, boolean);
>
> Shouldn¹t there also be a:
>
> gl.glColorMask(int, int, int, int);
>
> Or is it just me going mad as always?
>

C SPECIFICATION
       void glColorMask( GLboolean red,
                         GLboolean green,
                         GLboolean blue,
                         GLboolean alpha )


PARAMETERS
       red, green, blue, alpha
                             Specify whether red, green, blue, and alpha can or
                             cannot be written into the frame buffer.  The ini­
                             tial values are all GL_TRUE, indicating  that  the
                             color components can be written.

;-)


> Tip top
>
> aNt
>
>

not mad, but maybe microsoft help addicted ? 8-)

cheers, sven
- -- 
health & wealth
mailto:sgo...@ja...
www   : http://www.jausoft.com ; pgp: http://www.jausoft.com/gpg/
voice : +49-521-2399440 ; fax : +49-521-2399442
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Re: [gl4java-usergroup] installation problem

[Michael N. <ze...@mo...>]

thanks a lot Robert,

now the installation process and some demos work fine, but the e.g. the p=
orted=20
NeHe Tuts have no or really ugly keyboard input.

greetings
 - Michael Nischt


On Wednesday 19 June 2002 08:47, Robert Voigt wrote:
> You are root and the Xserver is owned by the user. For security reasons=
,
> you cant open a window as root.
> On Debian I do
> xauth merge /home/<user>/.Xauthority
> Should be similar on Suse.

Re: [gl4java-usergroup] installation problem

[Robert V. <f1...@gm...>]

You are root and the Xserver is owned by the user. For security reasons, you 
cant open a window as root. 
On Debian I do 
xauth merge /home/<user>/.Xauthority
Should be similar on Suse.


On Wednesday 19 June 2002 00:47, you wrote:
> hi all,
> just wanted to install GL4Java with following error:
>
> Xlib: connection to ":0.0" refused by server
> Xlib: Invalid XDM-AUTHORIZATION-1 key (failed key comparison)
> Exception in thread "main" java.lang.InternalError: Can't connect to X11
> window server using ':0.0' as the value of the DISPLAY variable.
> 	at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
> 	at
> sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:126) at
> java.lang.Class.forName0(Native Method)
> 	at java.lang.Class.forName(Class.java:130)
> 	at
> java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironmen
>t.java:62) at java.awt.Window.init(Window.java:208)
> 	at java.awt.Window.<init>(Window.java:252)
> 	at java.awt.Frame.<init>(Frame.java:398)
> 	at GL4JInst.main(GL4JInst.java:833)
>
>
> can anyone help ?
>
> My System:
> JDK 1.4
> SuSE Linux 8.0
> PIII 1,13 GHz
> 512MB RAM
> GeoForce 2 GO 32 MB
>
> ---------------------------------------------------------------------------
>- Bringing you mounds of caffeinated joy
>
>                    >>>     http://thinkgeek.com/sf    <<<
>
> _______________________________________________
> gl4java-usergroup mailing list
> gl4...@li...
> https://lists.sourceforge.net/lists/listinfo/gl4java-usergroup

[gl4java-usergroup] installation problem

[Michael N. <ze...@mo...>]

hi all,
just wanted to install GL4Java with following error:

Xlib: connection to ":0.0" refused by server
Xlib: Invalid XDM-AUTHORIZATION-1 key (failed key comparison)
Exception in thread "main" java.lang.InternalError: Can't connect to X11=20
window server using ':0.0' as the value of the DISPLAY variable.
=09at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
=09at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java=
:126)
=09at java.lang.Class.forName0(Native Method)
=09at java.lang.Class.forName(Class.java:130)
=09at=20
java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironm=
ent.java:62)
=09at java.awt.Window.init(Window.java:208)
=09at java.awt.Window.<init>(Window.java:252)
=09at java.awt.Frame.<init>(Frame.java:398)
=09at GL4JInst.main(GL4JInst.java:833)


can anyone help ?

My System:
JDK 1.4
SuSE Linux 8.0
PIII 1,13 GHz
512MB RAM
GeoForce 2 GO 32 MB

Re: [gl4java-usergroup] GL4Java Apps Make X "Go Away"

[David W. <da...@nt...>]

Same thing happened to me. Most of the samples freeze my X hard.
Remotely login to kill the X process is the only viable way to wake the
system.

Platform:
Pentium III 800
SuSE 7.3 Pro.=20
XFree86 4.2.0

David.

=D4=DA 2002-06-15 =C1=F9 =B5=C4 13:27=A3=AC Rob Hatcherson =D0=B4=B5=C0=A3=
=BA
>=20
> Hello All,
>=20
> We have encountered a situation where GL4Java apps make X "go away".
>=20
> Symptom:
> When running X/KDE in 16-bit color depth mode, attempts to run a GL4Java =
app will hang X.  The app's window will pop up, but no graphics ever show u=
p.  The GL4Java apps run fine in 24-bit color depth mode.
>=20
> When the system gets in this state the only thing that still moves is the=
 mouse, but all mouse (and keyboard) operations are ignored.  The machine d=
oesn't fully halt; you can still telnet into it while X is hung.  At that p=
oint "top" will show X taking 99% of the CPU.  Even though telnet works, on=
ce the system is in this state you can't reboot, and have to power-cycle th=
e box to get its attention.  I'm really liking the ext3 filesystem right ab=
out now :-).
>=20
> In both 16 and 24-bit mode C-based OpenGL apps still run fine and use har=
dware acceleration.
>=20
> Platform:
> Dual 1-GHz PIII running RedHat 7.3 with 2.4.18-4smp kernel, 512MB RAM, pl=
enty of disk.
> Elsa Gladiac 64MB GeForce3 video card (also observed the symptom on a sim=
ilar machine with a 64-MB VisionTek GeForce3 and 1GB RAM).
>=20
> O/S:
> RedHat 7.3, 2.4.18-4smp kernel.  We've also observed the problem on RedHa=
t 7.2 (can't recall the kernel version).
>=20
> Video Driver:
> Kernel and GLX modules built from nvidia's src RPMs.
>=20
> Java Versions:
> The symptom has been observed with Sun's JDK 1.3.1_02, 1.4.0, and 1.4.0_0=
1.  Apps have been built with the corresponding javac.
>=20
> GL4Java Version:
> 2.8.2.0 from the JauSoft site.
>=20
> Has anybody else observed such a symptom?
>=20
> Thanks for any feedback,
>=20
> Rob Hatcherson
> ZedaSoft, Inc
>=20
> _______________________________________________________________
>=20
> Don't miss the 2002 Sprint PCS Application Developer's Conference
> August 25-28 in Las Vegas - http://devcon.sprintpcs.com/adp/index.cfm?sou=
rce=3Dosdntextlink
>=20
> _______________________________________________
> gl4java-usergroup mailing list
> gl4...@li...
> https://lists.sourceforge.net/lists/listinfo/gl4java-usergroup

Re: [gl4java-usergroup] Are we missing a glColorMask

[Pepijn V. E. <pep...@lu...>]

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The opengl manual only lists
void glColorMask( GLboolean red,
			    GLboolean green,
			    GLboolean blue,
			    GLboolean alpha )
so I don't see why there should be a version that takes ints as parameters.

Pepijn Van Eeckhoudt

aNt wrote:
| There seems to only be a:
|
| gl.glColorMask(boolean, boolean, boolean, boolean);
|
| Shouldn¹t there also be a:
|
| gl.glColorMask(int, int, int, int);
|
| Or is it just me going mad as always?
|
| Tip top
|
| aNt
|
|
| _______________________________________________________________
|
| Sponsored by:
| ThinkGeek at http://www.ThinkGeek.com/
| _______________________________________________
| gl4java-usergroup mailing list
| gl4...@li...
| https://lists.sourceforge.net/lists/listinfo/gl4java-usergroup
|

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[gl4java-usergroup] Are we missing a glColorMask

[aNt <an...@to...>]

There seems to only be a:

gl.glColorMask(boolean, boolean, boolean, boolean);

Shouldn=B9t there also be a:

gl.glColorMask(int, int, int, int);

Or is it just me going mad as always?

Tip top

aNt

[gl4java-usergroup] Re: glReadPixels(...) not working

[<Px...@ao...>]

Sorry about my previous post--whether or not it went through, my attached file was not compressed.  This one is.

I executed "java gl4java.GLContext -infotxt" and the function test says it got 414/983 functions.  I have tried many things and read the FAQ's, but I'm at a loss.  I'm running win2k with j2sdk 1.4.0_01, and gl4java version 2.8.2.0.  The chipset is i810e with graphics driver version 5.13.1.2772.   Attached is the output from "java gl4java.GLContext -infotxt"
    I found out I had errors because glReadPixels wasn't doing any modification to my array...  Refer to my previous e-mails for more descriptions of the glReadPixels problem.
    I am really not trying to be a pest---I'm just posting more information about my problem in hopes of getting some help.  OpenGL in general is pretty new to me so I'm not sure what to do besides ask you all.  I appreciate any and all help.

Dennis

[gl4java-usergroup] GL4Java Jars available for web start developers

[Byron W. <bsl...@mi...>]

Hi All,

I recently posted a message on JavaGaming.org for help on deploying my
gl4java demo application using Java Web Start. The problem is that if I have
more than one application I need to have each application download the
gl4Java files and I would also have to sign these jars.

Someone suggested that it would be great to have the latest version of the
gl4java jars and bins signed and placed on a server so that anyone
developing gl4java applets/applications using Web Start for deployment can
reference these central files from their deployment descriptor (jnlp file).
I thought this was a good idea so I am suggesting it to the gl4java team.

Thanks,
Byron

Re: [gl4java-usergroup] FAQ link broken

[Robert V. <f1...@gm...>]

On Saturday 15 June 2002 06:20, you wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On Friday 14 June 2002 21:55, Robert Voigt wrote:
> > The FAQ on the GL4Java website contains a question without an answer:
> > My Canvas renders 1 frame, then stops, what's wrong ?
> > I'd really like to know that because I ran into that problem.
> > I followed the instructions about using the GLEventListener model, and
> > now this.
>
> ;-)
>
> FOR GLEventListener's: dont make current and/or free by your own,
> within the GLEventListener methods, implemented by your own.

I don't call gljMakeCurrent() or gljFree(), nowhere. Still I get only one 
frame, then my object disappears. I don't know what else I could try. I did 
everything I could see in the gears demo.

[gl4java-usergroup] GL4Java Apps Make X "Go Away"

[Rob H. <rha...@ze...>]

Hello All,

We have encountered a situation where GL4Java apps make X "go away".

Symptom:
When running X/KDE in 16-bit color depth mode, attempts to run a GL4Java app will hang X.  The app's window will pop up, but no graphics ever show up.  The GL4Java apps run fine in 24-bit color depth mode.

When the system gets in this state the only thing that still moves is the mouse, but all mouse (and keyboard) operations are ignored.  The machine doesn't fully halt; you can still telnet into it while X is hung.  At that point "top" will show X taking 99% of the CPU.  Even though telnet works, once the system is in this state you can't reboot, and have to power-cycle the box to get its attention.  I'm really liking the ext3 filesystem right about now :-).

In both 16 and 24-bit mode C-based OpenGL apps still run fine and use hardware acceleration.

Platform:
Dual 1-GHz PIII running RedHat 7.3 with 2.4.18-4smp kernel, 512MB RAM, plenty of disk.
Elsa Gladiac 64MB GeForce3 video card (also observed the symptom on a similar machine with a 64-MB VisionTek GeForce3 and 1GB RAM).

O/S:
RedHat 7.3, 2.4.18-4smp kernel.  We've also observed the problem on RedHat 7.2 (can't recall the kernel version).

Video Driver:
Kernel and GLX modules built from nvidia's src RPMs.

Java Versions:
The symptom has been observed with Sun's JDK 1.3.1_02, 1.4.0, and 1.4.0_01.  Apps have been built with the corresponding javac.

GL4Java Version:
2.8.2.0 from the JauSoft site.

Has anybody else observed such a symptom?

Thanks for any feedback,

Rob Hatcherson
ZedaSoft, Inc

Re: [gl4java-usergroup] what is the recommended way of swapping o ne canvas for another?-working now

[Sven G. <sgo...@ja...>]

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On Thursday 13 June 2002 15:08, Combe, Colin wrote:
> thanks Max,
> i'd have replied sooner but have been away for a few days. Things are
> working now.
> I think there was some sort of problem with adding and removing the
> GLCanvas components from  a Panel or Frame, just treating them like i would
> any other component didn't work anyway. After re-adding them nothing would
> appear in them. In my efforts to make it work I just ended up over
> complicating things - this was how i got into destroying and creating new
> instances and using cvsDispose.
> Anyway, I now add all the canvas's i'm going to use to the panel at the
> start and set them visible or invisible as required. It confuses layout
> managers a bit but i can live with that.
> cheers,
> colin
>

Well, here is an working example (outta gl4java.applet.SimpleGLAnimApplet1 @ CVS)

This one tooks out a GLCanvas Component, owned by a frame,
and adds it to a new frame.

The next time, it goes vica versa !

                GLAnimCanvas glcvs = (GLAnimCanvas)comp;
                System.out.println("\n\nswitch requested: "+glcvs);
                glcvs.cvsDispose();
                System.out.println("\n\ndisposed: "+glcvs);

                Container c = glcvs.getParent();
                c.remove(glcvs);

                System.out.println("\n\nremoved: "+glcvs);
                System.out.println("Global GLAnimCanvas Render-Thread Number: "+ GLAnimCanvas.getGlobalThreadNumber());
                System.out.println("GLContextNumber: "+
                                GLContext.getNativeGLContextNumber());

                if(_origCont !=null && c == _saveFrame)
                {
                        _saveFrame.dispose();
                        _saveFrame=null;

                        _origCont.add(canvas);
                        _origCont.doLayout();
                        _origCont = null;
                } else if( _saveFrame ==null && _origCont == null )
                {
                        _origCont = c;
                        _saveFrame = new Frame("EXTRA");
                        _saveFrame.add(glcvs);
                        _saveFrame.pack();
                        _saveFrame.setVisible(true);
                }
                glcvs.setVisible(true);
                glcvs.repaint();
                glcvs.start();

                System.out.println("\nadded+started: "+glcvs);
                System.out.println("Global GLAnimCanvas Render-Thread Number: "+ GLAnimCanvas.getGlobalThreadNumber());
                System.out.println("GLContextNumber: "+
                                GLContext.getNativeGLContextNumber());

so what ?

but try this with the CVS version only .. i guess ;-)

- -- 
health & wealth
mailto:sgo...@ja...
www   : http://www.jausoft.com ; pgp: http://www.jausoft.com/gpg/
voice : +49-521-2399440 ; fax : +49-521-2399442
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Re: [gl4java-usergroup] FAQ link broken

[Sven G. <sgo...@ja...>]

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On Friday 14 June 2002 21:55, Robert Voigt wrote:
> The FAQ on the GL4Java website contains a question without an answer:
> My Canvas renders 1 frame, then stops, what's wrong ?
> I'd really like to know that because I ran into that problem.
> I followed the instructions about using the GLEventListener model, and now
> this.
>

;-)

FOR GLEventListener's: dont make current and/or free by your own,
within the GLEventListener methods, implemented by your own.

FOR ELSE: you must do both, ..

cheers, sven
- -- 
health & wealth
mailto:sgo...@ja...
www   : http://www.jausoft.com ; pgp: http://www.jausoft.com/gpg/
voice : +49-521-2399440 ; fax : +49-521-2399442
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[gl4java-usergroup] FAQ link broken

[Robert V. <f1...@gm...>]

The FAQ on the GL4Java website contains a question without an answer:
My Canvas renders 1 frame, then stops, what's wrong ?
I'd really like to know that because I ran into that problem.
I followed the instructions about using the GLEventListener model, and now 
this.

Re: [gl4java-usergroup] Re: Integer for Constant

[Sven G. <sgo...@ja...>]

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On Friday 14 June 2002 18:00, Kenneth B. Russell wrote:
> >       public static int getIntForConstant(String constant) {
>
> Simpler and more efficient solution: use Class.getField.
>
> public static int getIntForConstant(String constant) throws
> RuntimeException { try {
>     Class c = GLEnum.class;
>     java.lang.reflect.Field f = c.getField(constant);
>     return f.getInt(c);
>   } catch (NoSuchFieldException e) {
>     throw new RuntimeException("Field " + constant + " not found");
>   }
> }
>
> NoSuchFieldException is a checked exception and its conversion into a
> RuntimeException makes it easier to write code around it without allowing
> silent failures like returning -1 would.
>

i guess thats it - thx for good design tips

so, shall i add it to GLEnmu and GLUEnum as well,
or would you prefere a global GLContext method,
which checks startsWith("GLU") ... ?

cheers, sven

- -- 
health & wealth
mailto:sgo...@ja...
www   : http://www.jausoft.com ; pgp: http://www.jausoft.com/gpg/
voice : +49-521-2399440 ; fax : +49-521-2399442
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Re: [gl4java-usergroup] Re: Integer for Constant

[Kenneth B. R. <kbr...@al...>]

>       public static int getIntForConstant(String constant) {

Simpler and more efficient solution: use Class.getField.

public static int getIntForConstant(String constant) throws RuntimeException {
  try {
    Class c = GLEnum.class;
    java.lang.reflect.Field f = c.getField(constant);
    return f.getInt(c);
  } catch (NoSuchFieldException e) {
    throw new RuntimeException("Field " + constant + " not found");
  }
}

NoSuchFieldException is a checked exception and its conversion into a
RuntimeException makes it easier to write code around it without allowing
silent failures like returning -1 would.

[gl4java-usergroup] Hello all

[Drake W. <dr...@er...>]

I've been playing with GL4Java for a few weeks now and love it!  A great way
for java programmers to learn openGL without <gasp> going back to C.

I have a few questions.

1) Loading Textures.  Is there a way to create a texture from an Image
object?  I have a few methods laying around that will create an image of a
specific file (originally for automatically creating icons) and save them.
But I would love to skip saving the files.  I'm in a project that I know
that I don't have controls of the image files.

2) Is there any public java parsers for any major 3d image formats?  Why
recreate the wheel.  I'm currently have access to the personal Maya, and
think I can convert the files from there to almost anything.

3) If not.  Has anyone heard about any decent 3d XML formats?  I was
considering writing my own quickly if nothing out there is available.


btw, I'm writing a 3d frontend to MAME (arcade emulator) to run on an
original arcade cabinet that I've converted to hold a computer.  Sven, I
think I talked to you a year ago or so about your work with opengl in mame
btw.  I wrote a little 3d engine to handle a bunch of things... then ended
up making the engine bigger and bigger and almost got a skeletal system
running (had troubles with the stretching of textures at the joints when
adding weighted vertexes... I think there was an easier way to do it....)...
then realized I didn't need 80% of it for the project I started.... so I
toned it down.  Now I think I'm going to write a small 3d modeling
application.  But only if I can't find an available parser : )

thanks for GL4Java!  Great work!

Re: [gl4java-usergroup] Re: Integer for Constant

[Antony R. <ri...@to...>]

I vote for -1 as well.

littleAnt.

----- Original Message -----
From: "Sven Goethel" <sgo...@ja...>
To: "Alex Alessandra" <Az...@ne...>; "gl4java-usergroup"
<gl4...@li...>
Sent: Friday, June 14, 2002 3:46 PM
Subject: Re: [gl4java-usergroup] Re: Integer for Constant


> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On Friday 14 June 2002 16:23, Alex Alessandra wrote:
> > Hi again,
> >
> > I'm not deep into C2J, but I can suggest an obvious method to accomplish
> > the task, the following code is generic and works outside gl4java
classes,
> > but, again, please consider the implementation into the gl4java package:
> >
> >       public static int getIntForConstant(String constant) {
> >         try {
> >           java.lang.Class enumClass =
> > java.lang.Class.forName("gl4java.GLEnum"); java.lang.reflect.Field[]
fields
> > = enumClass.getFields();
> >
> >           for(int i=0; i<fields.length; i++) {
> >
> >             if(fields[i].getName().equals(constant)) {
> >               // Found!
> >               return fields[i].getInt(enumClass);
> >             }
> >           }
> >         } catch (IllegalAccessException e) {
> >           // Would it occur ??? Do nothing...
> >         } catch (ClassNotFoundException e) {
> >           // GLEnum not found ??? Do nothing...
> >         }
> >         // Not found!
> >         return 0;
> >       }
> >
> > This method returns the correct GLEnum.[field] as int value if the given
> > constant string exists, otherwise it returns simply 0 (maybe -1 is more
> > appropriate, or throwing an Exception???).
> >
> > Waiting for comments...
> >
>
> ok !
>
> i guess "-1" would be more c stylish ;-)
>
> but if somebody loves exceptions more .. well, let's vote.
>
> my vote: -1
>
> i do wait a bit, then i can cvs ci this function as a static function
> within GLEnum ?
>
> cheers, sven
> - --
> health & wealth
> mailto:sgo...@ja...
> www   : http://www.jausoft.com ; pgp: http://www.jausoft.com/gpg/
> voice : +49-521-2399440 ; fax : +49-521-2399442
> -----BEGIN PGP SIGNATURE-----
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> Comment: For info see http://www.gnupg.org
>
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> 9r3XkHhBRun4zTSXttnbjW8=
> =RR08
> -----END PGP SIGNATURE-----
>
>
> _______________________________________________________________
>
> Don't miss the 2002 Sprint PCS Application Developer's Conference
> August 25-28 in Las Vegas -
http://devcon.sprintpcs.com/adp/index.cfm?source=osdntextlink
>
> _______________________________________________
> gl4java-usergroup mailing list
> gl4...@li...
> https://lists.sourceforge.net/lists/listinfo/gl4java-usergroup

Re: [gl4java-usergroup] Re: Integer for Constant

[Sven G. <sgo...@ja...>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Friday 14 June 2002 16:23, Alex Alessandra wrote:
> Hi again,
>
> I'm not deep into C2J, but I can suggest an obvious method to accomplish
> the task, the following code is generic and works outside gl4java classes,
> but, again, please consider the implementation into the gl4java package:
>
>       public static int getIntForConstant(String constant) {
>         try {
>           java.lang.Class enumClass =
> java.lang.Class.forName("gl4java.GLEnum"); java.lang.reflect.Field[] fields
> = enumClass.getFields();
>
>           for(int i=0; i<fields.length; i++) {
>
>             if(fields[i].getName().equals(constant)) {
>               // Found!
>               return fields[i].getInt(enumClass);
>             }
>           }
>         } catch (IllegalAccessException e) {
>           // Would it occur ??? Do nothing...
>         } catch (ClassNotFoundException e) {
>           // GLEnum not found ??? Do nothing...
>         }
>         // Not found!
>         return 0;
>       }
>
> This method returns the correct GLEnum.[field] as int value if the given
> constant string exists, otherwise it returns simply 0 (maybe -1 is more
> appropriate, or throwing an Exception???).
>
> Waiting for comments...
>

ok !

i guess "-1" would be more c stylish ;-)

but if somebody loves exceptions more .. well, let's vote.

my vote: -1

i do wait a bit, then i can cvs ci this function as a static function
within GLEnum ?

cheers, sven
- -- 
health & wealth
mailto:sgo...@ja...
www   : http://www.jausoft.com ; pgp: http://www.jausoft.com/gpg/
voice : +49-521-2399440 ; fax : +49-521-2399442
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=RR08
-----END PGP SIGNATURE-----

[gl4java-usergroup] Re: Integer for Constant

[Alex A. <Az...@ne...>]

Hi again, 

I'm not deep into C2J, but I can suggest an obvious method to accomplish the 
task, the following code is generic and works outside gl4java classes, but, 
again, please consider the implementation into the gl4java package:

      public static int getIntForConstant(String constant) {
        try {
          java.lang.Class enumClass = java.lang.Class.forName("gl4java.GLEnum");
          java.lang.reflect.Field[] fields = enumClass.getFields();

          for(int i=0; i<fields.length; i++) {

            if(fields[i].getName().equals(constant)) {
              // Found!
              return fields[i].getInt(enumClass);
            }
          }
        } catch (IllegalAccessException e) {
          // Would it occur ??? Do nothing...
        } catch (ClassNotFoundException e) {
          // GLEnum not found ??? Do nothing...
        }
        // Not found!
        return 0;
      }

This method returns the correct GLEnum.[field] as int value if the given 
constant string exists, otherwise it returns simply 0 (maybe -1 is more 
appropriate, or throwing an Exception???).

Waiting for comments...

-=[AziD]=-

Re: [gl4java-usergroup] Problem using glDeleteTextures and glDeleteLists methods

[Sven G. <sgo...@ja...>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Friday 14 June 2002 10:01, Dragana Petrovic wrote:
> Hi,
>

give us a "running" (L)GPL licensed demo, 
which does reproduce this behavior !

please do it with a very small footprint.

thx

cheers, sven

- -- 
health & wealth
mailto:sgo...@ja...
www   : http://www.jausoft.com ; pgp: http://www.jausoft.com/gpg/
voice : +49-521-2399440 ; fax : +49-521-2399442
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Re: [gl4java-usergroup] Integer for Constant

[Sven G. <sgo...@ja...>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Friday 14 June 2002 11:15, Alex Alessandra wrote:
> Hi,
>
> I'm in need to retrieve the int value for a GL String constant when parsing
> quake3 shaders from a file.
>
> Example:
> 		blendFunc GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
>
> I prepared a method like:
> 		int getIntForConstant("GL_SRC_ALPHA")
>
> But is there a way to get around this without having to prepare a lookup
> table (Hashtable or similar), maybe a static method in GLContext ?
>
> Java QuakeIIIArena is on the way...
>
> -=[AziD]=-
>

well, this schould be easy to implement.

just add this feature to the C2J parser,
which should implement such a string -> int mapping functionality !

may we or I help you with it ?

cheers, sven

- -- 
health & wealth
mailto:sgo...@ja...
www   : http://www.jausoft.com ; pgp: http://www.jausoft.com/gpg/
voice : +49-521-2399440 ; fax : +49-521-2399442
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