plib-users

Re: [Plib-users] RE: problem of plib with MFC

[Wolfram K. <w_...@rz...>]

Hi,

I am quite sure that zhou is correct and that if you either use
Multithreaded for everything or singlethreaded for everything and do
not mix, the problem will be solved. Look at=20
"project/settings/C++/code generation". Only link to things that match
your model.

Bye bye,
Wolfram.

[Plib-users] Crash while deleting puDialogBox... access violation

[SkyFlash <sky...@ch...>]

I have a strange crash I dont really understand...
If there is anyone that has experienced something similar and knows a
solution please speak up. :)

Basicly, I create a dialogbox, and close it when the callback for the
button inside it is called.
Once it closes I get a crash, access violation.

Traceback:

puOneShot::doHit(int 0, int 1, int 243, int 34) line 33 + 12 bytes
puObject::checkHit(int 0, int 1, int 243, int 34) line 508 + 29 bytes
puGroup::checkHit(int 0, int 1, int 243, int 34) line 212 + 29 bytes
puMouse(int 0, int 1, int 394, int 316) line 378 + 42 bytes
mouse(int 0, int 1, int 394, int 316) line 1004 + 21 bytes
FREEGLUT! 0089661d()

I made sure that the dialog box destructor was called before that, so
somehow PUI seems to maintain
the pointer somewhere internally and call it even after it was
destroyed. (I think?)
It may have something to do with the LiveInterface code(??), but I didnt
manage to trace it down.
Its prolly something stupid and I just dont see it.. sigh.

Do I need to tell PUI I am deleting that dialogbox AND the buttons
inside it??
Clean something up? Pop some interface from the stack??

Thx for any answer you might have...

Ralf Pietersz


Here is the code:

---------- snip ------------

void ClientApp::CreateNoticeBox (string text)
{
	if (m_dialogbox != 0)
		return;

	if (m_dialogboxtext)
		delete m_dialogboxtext;
	m_dialogboxtext = new char [255];
	strcpy (m_dialogboxtext, text.substr (0,254).c_str ());

	m_dialogbox = new puDialogBox (puGetWindowWidth()/2-250,
puGetWindowHeight()/2-50);

	{
		new puFrame (0, 0, 500, 100);

		puText* text = new puText (10, 55);
		text->setLabel (m_dialogboxtext);

		puOneShot* ok = new puOneShot (220, 15, 280, 45);
		ok->setLegend ("OK");
		ok->setCallback (closedialogbox);
	}

	m_dialogbox->close ();
	m_dialogbox->reveal ();
}

void ClientApp::DestroyNoticeBox ()
{
	if (m_dialogbox)
		delete m_dialogbox;

	if (m_dialogboxtext)
		delete m_dialogboxtext;

	m_dialogbox = 0;
	m_dialogboxtext = 0;
}

static void closedialogbox (puObject *ob)
{
	app->DestroyNoticeBox ();
}

static void mouse ( int button, int updown, int x, int y )
{
	puMouse ( button, updown, x, y );

	glutPostRedisplay () ;

	app->HandleMouseClicks (button,updown,x,y);
}

Re: [Plib-users] RE: problem of plib with MFC

[Chito M. <chi...@ya...>]

hi zhou! my problem is like this... i created a
program that uses ssg just like the tux_example of
PLIB. I successfully created it and it runs smoothly
independently. so i stick it with the mfc (i got a
tutorial that teaches how to integrate opengl in a
dialog box) and errors such as conflict in mscvrt.lib
and libcd.lib occur. then i removed the two libraries
and errors again such as access violation on the
addkid function of the ssg occur. my question is why
is it that i do not have that kind of error when i run
the program independently and if i integrate it with
MFC so many errors occur... it's very confusing and
frustrating!! anyway, thanks 4 your help i do hope u
can help me with this... tnx in advance...

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Re: [Plib-users] ssg Context and multiple views

[Wolfram K. <w_...@rz...>]

Hi,

You can use PrettyPoly as an example for that:
prettypoly.sf.net

Bye bye,
Wolfram.

[Plib-users] RE: problem of plib with MFC

[<zh...@ya...>]

Chito Miranda:

        In my program, plib work with MFC perfectly. I have not never meet your problem. please describe you problem, especial the error message more detail. Usually, when you use plib in MFC, there will be a warning message showing libc.lib (or debug version libcd.lib ) conflicting, which was mentioned by Erik Unemyr at 19 Mar 2003. This is not a bug, acctually, I have not find the side effect of such warning message. This problem is caused by MFC's habit of use multithread library, however the make file of plib use single thread library. Recompile plib with option /ML can remove the warning message. 

  good luck

 zhou            




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Re: [Plib-users] MDL/BGL datafiles

[Per L. <li...@ho...>]

MDL is quite similar to BGL, but is used for describing aircraft models
rather than scenery. They use the same internal format, but the file
structure differs and BGL can define more things than just graphics (stuff
like navaids, magnetic variation, etc.)

Regards,
Per

----- Original Message -----
From: "Paolo Leoncini" <p.l...@ci...>
To: "Plib-Users" <pli...@li...>
Sent: Tuesday, March 25, 2003 4:28 PM
Subject: [Plib-users] MDL/BGL datafiles


> Dear Plib friends,
>
> I'd like to understand how to load FS2002 bgl data files. In SSG I just
saw
> support for file extension mdl, yet no .mdl file is in the FS scene
> database. I tried renaming a .bgl in .mdl with no success.
>
> Thanks && greetings -
>
> Paolo
>
>
> -------------------------------------------------------------------------
> Paolo Leoncini phone:  +39 (0823) 623134
> Visualization & Virtual Reality fax:    +39 (0823) 623126
> CIRA - Italian Center for Aerospace Researches mailto:p.l...@ci...
> Via Maiorise - 81043 Capua (CE) Italy http://www.cira.it
>
>
>
> -------------------------------------------------------
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>

[Plib-users] ssg Context and multiple views

[<ste...@gm...>]

Hi all,

i try to open multiple openGL (sub)windows which all show the same ssg(root)
under different perspectives. i use the ssgContext class and give every
class another FOV, NearFar and so on. But what i see is the following: 

the first view is ok, but all other views looks blurred (as if the update is
not completed) and the perspective is the same in all views.

a little code example about the use of ssgContext would be appreciated.

thanks, stephan

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[Plib-users] MDL/BGL datafiles

[Paolo L. <p.l...@ci...>]

Dear Plib friends,

I'd like to understand how to load FS2002 bgl data files. In SSG I just saw
support for file extension mdl, yet no .mdl file is in the FS scene
database. I tried renaming a .bgl in .mdl with no success.

Thanks && greetings -

Paolo


-------------------------------------------------------------------------
Paolo Leoncini						phone:  +39 (0823) 623134
Visualization & Virtual Reality			fax:    +39 (0823) 623126
CIRA - Italian Center for Aerospace Researches	mailto:p.l...@ci...
Via Maiorise - 81043 Capua (CE) Italy		http://www.cira.it

[Plib-users] Re: Compiling on a machine with NVidia's drivers

[Jeff L. <lo...@sl...>]

> 
> Can't get plib-1.6.0 to ./configure on my laptop, which uses a GeForce 2 
> Go card with recent NVidia drivers (from their site).  I assume this is 
> due to the fact that NVidia messes with the previously installed OpenGL 
> stuff:
> 
> [root@lapdance: /usr/local/src/plib-1.6.0]$ ./configure
> 
> <snip>
> 
> checking for glNewList in -lGL... yes
> checking for gluLookAt in -lGLU... no
> checking for gluLookAt in -lMesaGLU... no
> configure: error: could not find working GLU library

There's a good chance your libGLU is located elsewhere (like 
/usr/X11R6/lib).  I've had to run './configure  --with-GL=/usr/X11R6' in 
the past when that has happened.

Jeff Long

[Plib-users] Compiling on a machine with NVidia's drivers

[Bob S. <rc...@ma...>]

Can't get plib-1.6.0 to ./configure on my laptop, which uses a GeForce 2 
Go card with recent NVidia drivers (from their site).  I assume this is 
due to the fact that NVidia messes with the previously installed OpenGL 
stuff:

[root@lapdance: /usr/local/src/plib-1.6.0]$ ./configure

<snip>

checking for glNewList in -lGL... yes
checking for gluLookAt in -lGLU... no
checking for gluLookAt in -lMesaGLU... no
configure: error: could not find working GLU library

[root@lapdance: /usr/local/src/plib-1.6.0]$ ls -lFa /usr/lib/libGL*
lrwxrwxrwx    1 root     root           21 Sep 14  2002 
/usr/lib/libGLcore.so.1 -> libGLcore.so.1.0.2960*
-r-xr-xr-x    1 root     root      3572572 May 14  2002 
/usr/lib/libGLcore.so.1.0.2960*
lrwxrwxrwx    1 root     root           10 Sep 14  2002 
/usr/lib/libGL.so -> libGL.so.1*
lrwxrwxrwx    1 root     root           17 Sep 14  2002 
/usr/lib/libGL.so.1 -> libGL.so.1.0.2960*
-r-xr-xr-x    1 root     root       281244 May 14  2002 
/usr/lib/libGL.so.1.0.2960*


Anyone figured out how to get this to compile?

TIA - Bob

 -- 
________________________________________
Bob Sully - Simi Valley, California, USA
http://www.malibyte.net

"The waiting is the hardest part." - T. Petty

Re: [Plib-users] problem: Plib with MFC(dialog box)

[Chito M. <chi...@ya...>]

Hi Erik... tnx 4 your help it is quite useful... but
the problem is that it still can't work with MSVC++'s
mfc (esp the dialog box). Opengl works fine when you
integrate it with mfc but PLIB, does not... i really
don't know why ... pls help... tnx nyways :)


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Re: [Plib-users] PUI: getLegend bug?

[Eero P. <epa...@ko...>]

SkyFlash wrote:

> 
> Well, what I did was something like this:
> 
> string charactername;
> 
> if (characterexists)
> 	m_characterselect->setLegend (charactername.c_str())
> else
> 	m_characterselect->setLegend ("None")
> 

I get a creepy feeling when I see the c_str()...
The value returned from it certainly doesn't stay valid
if you in anyway change the charactername string, including
allowing it to go out of scope.

On the other hand even if I understand how this would cause
corrupted output, it is not so obvious what would cause the
actual crash. That might depend on the malloc implementation
though.



		Eero

RE: [Plib-users] PUI: getLegend bug?

[SkyFlash <sky...@ch...>]

> This is odd, I don't think C-language string constants
> (literals) should be destroyed or become invalid when they 
> are "out of scope"-

Neither did I. :)

> Certainly the most typical legend usage I have is:
> 
> button->setLegend("My Button");
> 
> and it works fine. C++ standard library "strings" are an
> other thing, and they might cause problems.

Well, what I did was something like this:

string charactername;

if (characterexists)
	m_characterselect->setLegend (charactername.c_str())
else
	m_characterselect->setLegend ("None")

Now, wheneever there was no character and the static "None" was set it
crashed.
This here works fine:

if (characterexists)
	m_characterselect->setLegend (charactername.c_str())
//else
//	m_characterselect->setLegend ("None")

And it displays the character names on the buttons. Of course it
probably trashes memory at some point. :P

Ralf Pietersz

Re: [Plib-users] PUI: getLegend bug?

[Eero P. <epa...@ko...>]

SkyFlash wrote:
> I just discovered that setLegend will copy my char* instead of copying
> the content, so if I pass in
> a constant like "Value" it crashes after the memory is out of scope.

This is odd, I don't think C-language string constants (literals)
should be destroyed or become invalid when they are "out of scope"-

Certainly the most typical legend usage I have is:

button->setLegend("My Button");

and it works fine. C++ standard library "strings" are an other thing,
and they might cause problems.

> Also if I pass in a temporary variable and delete
> it afterwards it crashes....
> 

Yes, this is to be expected.

> How am I supposed to change the value of the legend of a widget after
> its created?
> 

If I have needed to "inplace edit" widget legends I have either used
static char arrays or dynamically allocated memory buffers, which
I have then passed to setLegend. Of course for dynamic allocation the
buffer cannot be freed before the widget has been destroyed.



		Eero

Re: [Plib-users] problem: Plib with MFC(dialog box)

[Erik U. <un...@et...>]

Hi,

I do not know if this i completely related to your problem,
but in my project file I had to put libcd.lib as an ignored 
library in project settings. This might help (maybe not).

I suppose you have added the plib lib files correctly.


Best regards,

Erik

On Wed, 2003-03-19 at 07:05, Chito Miranda wrote:
> Hello peeps! I'm new to this list and i really need
> someone's help. We created a simulation project that
> simulates a life of a creature. It should be in a
> dialog box(mfc) msvc++. The problem is that errors
> like linker errors that states that there is a
> conflict with the default lib: mscvrt.lib. I tried to
> remove that lib but still there is an error. What
> should we do?? Pls help... 
> 
> __________________________________________________
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-- 
-------------------------------------------
Erik Unemyr
E-mail: un...@et...

Student @ Chalmers University of Technology
-------------------------------------------

[Plib-users] problem: Plib with MFC(dialog box)

[Chito M. <chi...@ya...>]

Hello peeps! I'm new to this list and i really need
someone's help. We created a simulation project that
simulates a life of a creature. It should be in a
dialog box(mfc) msvc++. The problem is that errors
like linker errors that states that there is a
conflict with the default lib: mscvrt.lib. I tried to
remove that lib but still there is an error. What
should we do?? Pls help... 

__________________________________________________
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[Plib-users] PUI: getLegend bug?

[SkyFlash <sky...@ch...>]

I just discovered that setLegend will copy my char* instead of copying
the content, so if I pass in
a constant like "Value" it crashes after the memory is out of scope.
Also if I pass in a temporary variable and delete
it afterwards it crashes....

How am I supposed to change the value of the legend of a widget after
its created?

Ralf Pietersz

[Plib-users] problem of removekid

[<zh...@ya...>]

The plib is a very good library, thank for Steve.  There seems some promble in the member function removekid. After  creating a scene, I can't  edit it with removekid. I  modify the source code of ssgBranch::removeKid ( ssgEntity *entity ) like this

void ssgBranch::removeKid ( ssgEntity *entity )
{
  entity -> ref(); // This line is added by me
  entity -> removeParent ( this ) ;
  kids.removeEntity ( entity ) ;
  dirtyBSphere () ;
  entity -> deRef(); // This line is added by me
}

Now, it seems work normally.  

The developing tools used by me are VC++ 6.0 and Plib 1.6.0.  I don't know if other guys meet this problem. I hope Steve can fix this problem in the future plib. 

 

 

 



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Re: [Plib-users] PLib on MacOS X?

[Steve B. <sjb...@ai...>]

John Reppy wrote:
> Has anyone ported plib to MacOS X?  The config.guess file distributed
> in both plib-1.6.0 and 1.7.0 dates back to 1999 and does not recognize
> MacOS X.  I expect that it should be fairly easy to do the port, but
> I don't want invest the time if someone else has already done so.

The version in CVS certainly works on MacOS X - I thought the earlier
versions did too...but perhaps not with the configure mechanism.

---------------------------- Steve Baker -------------------------
HomeEmail: <sjb...@ai...>    WorkEmail: <sj...@li...>
HomePage : http://www.sjbaker.org
Projects : http://plib.sf.net    http://tuxaqfh.sf.net
            http://tuxkart.sf.net http://prettypoly.sf.net
-----BEGIN GEEK CODE BLOCK-----
GCS d-- s:+ a+ C++++$ UL+++$ P--- L++++$ E--- W+++ N o+ K? w--- !O M- V-- PS++ PE- Y-- PGP-- t+ 5 X R+++ tv b++ DI++ D G+ e++ h--(-) r+++ y++++
-----END GEEK CODE BLOCK-----

[Plib-users] PLib on MacOS X?

[John R. <jh...@cs...>]

Has anyone ported plib to MacOS X?  The config.guess file distributed
in both plib-1.6.0 and 1.7.0 dates back to 1999 and does not recognize
MacOS X.  I expect that it should be fairly easy to do the port, but
I don't want invest the time if someone else has already done so.

	- John

Re: [Plib-users] Texture scaling

[Steve B. <sjb...@ai...>]

Erik Unemyr wrote:
> Hello,
> 
> I would like to change the scaling of a texture on an object.
> What would be the easiest way to do that?
You could push/pop the texture transform matrix in the SSG draw
callback.

It's usually just easier to multiply the texture coordinates yourself,
unless there are truly VAST numbers of vertices that have to be
continually re-scaled, it's generally not worth the overhead to
do it with the texture matrix.

---------------------------- Steve Baker -------------------------
HomeEmail: <sjb...@ai...>    WorkEmail: <sj...@li...>
HomePage : http://www.sjbaker.org
Projects : http://plib.sf.net    http://tuxaqfh.sf.net
            http://tuxkart.sf.net http://prettypoly.sf.net
-----BEGIN GEEK CODE BLOCK-----
GCS d-- s:+ a+ C++++$ UL+++$ P--- L++++$ E--- W+++ N o+ K? w--- !O M- V-- PS++ PE- Y-- PGP-- t+ 5 X R+++ tv b++ DI++ D G+ e++ h--(-) r+++ y++++
-----END GEEK CODE BLOCK-----

[Plib-users] Problem with puInput

[SkyFlash <sky...@ch...>]

Additionally to my last problem, I am having difficulties with puInput..

Basicly, I want the input to be active and accepting input at all times,
even when mouseclicks elsewhere happen.

I tried doing it with puSetActiveWidget, but that doesnt work. Its not
doing anything, I call it in every callback after
the pu events are done, but still I get no I cursor in the input box and
its not accepting input. Btw, I also do call
acceptinput on the widget after every call that could take it away.

Then, I want to capture the enter key event and then clear the string in
the input and handle it, while still accepting the next input
in the textbox. That doesnt work as well, cause there is no callback
that gets called when the enter key is pressed.

It does of course call the normal callback, but that one is also called
when you click the input widget, so its useless cause I dont wanna
send the string when someone clicks the widget, but only when enter is
pressed. I also cant check for enter in the callback cause its not
added to the string apparently, thus I cannot check whether the callback
was called for the enter key or for clicking the mouse on it.

I hope there are solutions for that... thx

Ralf Pietersz

Re: [Plib-users] Texture scaling

[<le...@ci...>]

Quoting Erik Unemyr <un...@et...>:

> Hello,
> 
> I would like to change the scaling of a texture on an object.
> What would be the easiest way to do that?

Official SSG approach: put your object under (kid of) a ssgTextureTransform 
node, where you can issue the transformation you need to apply to the texture.

My preferred: set an object's pre-draw callback which apply the texture matrix:

glmatrixmode GL_TEXTURE;
glloadmatrix <your matrix> or glscale ...;
return 1;

and a post-draw callback to reset the texture matrix:

glmatrixmode GL_TEXTURE;
glloadidentitymatrix;
return 1;

I like the latter since you don't need to rearrange your scene graph, just need 
object's node pointer. So I use it for leaf objects (meshes).

Sorry for the pseudoGLcode, I can never remember exactly the call syntax when 
I'm far from my sources.

> Best regards,
> 
> Erik

Greetings -

Paolo 

-------------------------------------------
Paolo Leoncini
E-mail: p.l...@ci...
-------------------------------------------

> 
> 
> 
> 
> 
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> 

[Plib-users] Using PUI with bitmap buttons?

[SkyFlash <sky...@ch...>]

I basicly want to have a custom GUI that not only changes in color, but
uses transparent graphics as background for the widgets.
How do I go about implementing that?

From what I read in the docs I guess the widgets cant load any graphics
directly, so I will have to write a user render callback.
But how do I then render the widget in the PLIB window in 2D? Does PLIB
have API to load and display bitmaps in 2D on the current screen, mixing
it with 3D from ssg? How can I load the graphics into PLIB?

If there are no PLIB calls, how do I use freeglut to draw bitmaps to the
screen? Are there any example apps that have custom gui to guide me?

Thx for any help...

Ralf Pietersz

[Plib-users] Texture scaling

[Erik U. <un...@et...>]

Hello,

I would like to change the scaling of a texture on an object.
What would be the easiest way to do that?


Best regards,

Erik

-------------------------------------------
Erik Unemyr
E-mail: un...@et...

Student @ Chalmers University of Technology
-------------------------------------------