date:20080904

Re: [osg-users] osgmultiplerendertargets

2008-09-04 Thread J.P. Delport

Hi,

no, you don't need cmline args. With just the command you should see a
yellow square.

I have not compiled 2.6. I have 2.5.3 here and it works (Debian Sid,
NVidia 7400 Go).

You could also try:
osgmultiplerendertargets --image
and
osgmultiplerendertargets --hdr

but they prob won't work if the simple one does not.

I know there have been some changes wrt multisample FBO's, not sure if
that could cause trouble.

I'm also not sure if there are proper checking for MRT capabilities in
the example. The example assumes it can use 4 render targets.

[EMAIL PROTECTED] wrote:

I'm getting a segmentation fault when running the osgmultiplerendertargets
example using OSG 2.6 under Linux.The call stack says its in
RenderStage::runCameraSetUp. My OSG isn't currently compiled debug. Am I doing
something wrong? Do I need command line arguments?

Paul P

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Re: [osg-users] Linking error : OpenThread

2008-09-04 Thread Mathias Fröhlich


Hi,

On Thursday 04 September 2008 23:23, Rahul Jain wrote:
> While compiling my application with OSG2.6 I am getting following
> linking error  "*undefined reference to
> `OpenThreads::Atomic::operator--()*". The same application is linked
> properly with OSG2.4.  Since i am not using Atomic operation in my
> application, i  am not able to find the reason for failure.Any guesses ?

May be you need to link your application to libOpenThreads also?
You use the Atomic stuff when you have any ref_ptr inline in your code ...

Greetings

Mathias

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[osg-users] VPB using shoreline / borders vector data to determine alpha

2008-09-04 Thread Ralf Stokholm

Hi Robert /List

Would an option to use a shapefile containing ie. water bodies or borders to
set the transparency of a terrain layer be feaseble?

For my application it would be nice to use border vector data to eleminate
data from one dataset and blend into another.

It should also be relatively easy to extend a terrain with some nice looking
ocean effects if the terrain would simply alphablen into the warter surface
as determined by a shoreline shapefile?

What are your thourghts on this?

Brgs.

Ralf Stokholm
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[osg-users] how to create char fireworks

2008-09-04 Thread xuyuanzhen1

Hello all:
  I want to create some char fireworks such as osgCool.osg.Who could tell 
me how to do or have any examples?
  Any help shall be appreciated.
  Best wishes.

2008-09-05 



xuyuanzhen1 
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Re: [osg-users] playing AVI on Windows

2008-09-04 Thread Ulrich Hertlein

Hi Janusz,

Janusz wrote:
> To play AVI from within OSG, I wrote a simple app. that plays (or should
> play) AVI files in OSG. The app. proceeds frame by frame displaying the
> AVI contents on a quad inside OSG.
> My problem is that only the first frame is generated and shown on the
> quad. As soon as the app. steps to another one, it breaks.
>...
> /* Code where it breaks: Image.cpp
> void Image::deallocateData()
> {
> if (_data) {
> if (_allocationMode==USE_NEW_DELETE) delete [] _data;
> else if (_allocationMode==USE_MALLOC_FREE) ::free(_data);
> _data = 0;
> }
> }
>... 
> hBitmap = CreateDIBSection (hdc, (BITMAPINFO*)(&bmih),
> DIB_RGB_COLORS, (void**)(&data), NULL, NULL);
>...
> image->setImage(imWidth,imHeight,1,
> GL_TEXTURE_2D,GL_RGB,
> GL_UNSIGNED_BYTE, data,
> osg::Image::USE_NEW_DELETE);
>...
> image->allocateImage(256, 256, 1,
> GL_RGB, GL_UNSIGNED_BYTE);

Your 'data' object is allocated by 'CreateDIBSection'.  You then pass it to 
osg::Image and
tell it to USE_NEW_DELETE to free the pointer if necessary.

When you call osg::Image::allocateImage the first thing it does is to try to 
get rid of
the previous image, in your case it does a 'delete[] data'.  This is probably 
the wrong
thing for two reasons: first 'data' mosty likely wasn't allocated using 'new[]' 
and second
you don't actually want to delete that data.

You don't actually need to tell the image anything other than that the contents 
of 'data'
has changed (I assume this is the case in 'GrabAVIFrame').

Try to use osg::Image::NO_DELETE instead of osg::Image::USE_NEW_DELETE and 
simply call
osg::Image::dirty() after your call to 'GrabAVIFrame' (no 
allocateImage/setImage).  The
dirty() call marks the Image data as modified and causes the Texture to 
re-upload it.

Hope this helps.
Cheers,
/ulrich
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[osg-users] Movie texture on poly

2008-09-04 Thread Patrick A. Webb


Hello, I'm trying to use osgviewer to display some models created in
Blender, and use animated textures (MPEG4 movies or even animated GIFs) on
those models.

I've read through the archives and found mention of replacing the texture
file name in the .osg file with the name of the movie that's going to be 
the animated texture, but I've had no luck getting the texture to actually

animate.

Does anyone have an example .osg file and an associated movie that 
worktogether to play an animated texture on a polygon?


Thanks in advance for any help.

-Patrick Webb
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Re: [osg-users] 2.6 Mac OS X issues and some solutions

2008-09-04 Thread Dongpyo Hong

Hi,

I also had strange experience on Mac OS X (10.5) MacBook Pro
when I ran an OSG application (specificially osgShadow), my MBP
rebooted. I just suspect Video card of my MBP (ATI Radeon).
Anyone who has similar experience with me or can explain why?

Cheers,
Dongpyo

On 9/4/08, James Turner <[EMAIL PROTECTED]> wrote:
>
>
> On 4 Sep 2008, at 14:34, Eric Sokolowsky wrote:
>
> Yes, for now, the cmake project does not create OSG frameworks. We're
>> working on this. Creating dylibs works fine. These dylibs can be installed
>> on a developer's system or embedded into an application. Since most of the
>> example programs require command-line arguments to run properly, it's not
>> too much of a burden to set environment variables. Once we get frameworks
>> built with cmake the environment variables should not be necessary.
>>
>
> I'd be happy to test any work-in-progress on building frameworks for CMake
> - and since OSG is currently 'unstable' it'd seem like a good time to get in
> into SVN so people can try it and work through and problems that arise.
>
> James
>
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[osg-users] playing AVI on Windows

2008-09-04 Thread Janusz


Dear all:

To play AVI from within OSG, I wrote a simple app. that plays (or should 
play) AVI files in OSG. The app. proceeds frame by frame displaying the 
AVI contents on a quad inside OSG.
My problem is that only the first frame is generated and shown on the 
quad. As soon as the app. steps to another one, it breaks.


Shortly speaking, my sequence is as follows:

- open avi file, stream
- get the first frame
- create the quad, and apply the texture // so far, so good!
- init viewer
loop:
   increase frame count
   grab the bext frame
   apply the texture // frame no. 2 - crash
   
end

It is inside the viewer's loop that the code breaks when I apply the AVI 
data (at frame no. 2) to the new image through:

   while (!viewer.done())
   {   
   viewer.frame();   


   frame = ((frame+1)>lastframe) ? 0 : (frame+1);

   GrabAVIFrame(frame);
  
   image->allocateImage(256, 256, 1,

   GL_RGB, GL_UNSIGNED_BYTE);
   // BREAKS HERE
   image->setImage(256,256,1,
   GL_TEXTURE_2D,GL_RGB,
   GL_UNSIGNED_BYTE, data,
   osg::Image::USE_NEW_DELETE);
   texture->setImage(0,image.get());   
  
   }


I have tracked the error down to deallocateData() in Image.cpp. I would 
appreciate any advice on how to solve this. The source code that 
recreates the error in a simple way is below.


The AVI part comes from the NeHe site.
Again, appreciate any reply on the cause of the problem here.
Rgds, Janusz

-
/* Code where it breaks: Image.cpp

void Image::deallocateData()
{
   if (_data) {
   if (_allocationMode==USE_NEW_DELETE) delete [] _data;
   else if (_allocationMode==USE_MALLOC_FREE) ::free(_data);
   _data = 0;
   }
}

*/

#include 

#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 

#include 
#include 
#include 
#include 

#include 
#include 
#include 
#include 

#include 

#pragma comment( lib, "vfw32.lib" )   


intframe=0;
AVISTREAMINFO psi;
PAVISTREAMpavi;
PGETFRAMEpgf;

BITMAPINFOHEADER bmih;
long lastframe;
int width;
int height;

char *pdata;

HDRAWDIB hdd;   
HBITMAP hBitmap;   
HDC hdc = CreateCompatibleDC(0);   
unsigned char* data = 0;

int mpf;

osg::ref_ptr texture;
osg::ref_ptr image;

// Flips The Red And Blue Bytes (256x256)
void flipIt(void* buffer)   
{
   void* b = buffer;   
   __asm   
   {
   mov ecx, 256*256   
   mov ebx, b   
label:   
   mov al,[ebx+0]   
   mov ah,[ebx+2]   
   mov [ebx+2],al   
   mov [ebx+0],ah   

   add ebx,3   
   dec ecx   
   jnz label   
   }

}

void OpenAVI(LPCSTR szFile)   
{
   AVIFileInit();   
   hdd = DrawDibOpen();
  
   // Opens The AVI Stream
   if (AVIStreamOpenFromFile(&pavi, szFile, streamtypeVIDEO, 0, 
OF_READ, NULL) !=0)

   {
   MessageBox (HWND_DESKTOP, "Failed To Open The AVI Stream", 
"Error", MB_OK | MB_ICONEXCLAMATION);

   }

   AVIStreamInfo(pavi, &psi, sizeof(psi));   
   width=psi.rcFrame.right-psi.rcFrame.left;   
   height=psi.rcFrame.bottom-psi.rcFrame.top;   
   lastframe=AVIStreamLength(pavi);   

   mpf=AVIStreamSampleToTime(pavi,lastframe)/lastframe;   

   bmih.biSize = sizeof (BITMAPINFOHEADER);   
   bmih.biPlanes = 1;   
   bmih.biBitCount = 24;   
   bmih.biWidth = 256;   
   bmih.biHeight = 256;
  

   hBitmap = CreateDIBSection (hdc, (BITMAPINFO*)(&bmih), 
DIB_RGB_COLORS, (void**)(&data), NULL, NULL);
   SelectObject (hdc, hBitmap);   

   pgf=AVIStreamGetFrameOpen(pavi, NULL);   
   if (pgf==NULL)

   {
   MessageBox (HWND_DESKTOP, "Failed To Open The AVI Frame", 
"Error", MB_OK | MB_ICONEXCLAMATION);
   }   
}


void GrabAVIFrame(int frame)   
{
   LPBITMAPINFOHEADER lpbi;   
   lpbi = (LPBITMAPINFOHEADER)AVIStreamGetFrame(pgf, frame);   
   pdata=(char *)lpbi+lpbi->biSize+lpbi->biClrUsed * sizeof(RGBQUAD);
  
   DrawDibDraw (hdd, hdc, 0, 0, 256, 256, lpbi, pdata, 0, 0, width, 
height, 0);
  
   flipIt(dat

[osg-users] osgFX::BumpMapping

2008-09-04 Thread Pecoraro, Alexander N

Is it possible to write osgFX::BumpMapping nodes to an ive file? I
noticed in OSG 2.4 and 2.5 there seems to be some code for writing it to
.osg, but not .ive. I also noticed that in the OSG trunk on SVN there
appears to be some code for writing it to ive, but I was hoping to be
able to use a released version. I figured since it appears the
osgFX::BumpMapping just uses built in OSG nodes that it would be able to
write out the OSG nodes that are created by osgFX::BumpMapping. Is that
the case?

 

Thanks.

 

Alex

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[osg-users] Linking error : OpenThread

2008-09-04 Thread Rahul Jain


Hi all,
While compiling my application with OSG2.6 I am getting following 
linking error  "*undefined reference to 
`OpenThreads::Atomic::operator--()*". The same application is linked 
properly with OSG2.4.  Since i am not using Atomic operation in my 
application, i  am not able to find the reason for failure.Any guesses ?

best regards
RJ
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Re: [osg-users] adaptation of chunkLOD to OSG

2008-09-04 Thread [EMAIL PROTECTED]


Robert Osfield wrote:

Hi Hannes,

On Fri, Aug 29, 2008 at 8:27 PM, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:

someone from the project came up with this question:


"the project" being??  Your own project?


http://sourceforge.net/projects/csp
http://csp.sourceforge.net/
The Combat Simulator Project


I think this demo never became part of OSG, which is also what Robert
states in his response to your question. Anyway, I don't get what
exactly he's talking about in terms of the relationship between
ChunkedLOD and osgDB::DatabasePager. The chunking aspect in
ChunkedLOD refers to the fact the rendering algorithm divides the
terrain mesh into individual chunks that can be sent to the gfx
adapter separately, eliminating the need to re-build the whole mesh
every time the camera perspective changes. In my understanding,
osgDB::DatabasePager is used to load terrain tiles in a background
thread, but is not directly to the actual rendering operations.


DatabasePager only does loading of subgraps in a background thread,
incremental compiling of OpenGL objects, merge of new subgraphs and
deleting of expired subgraphs.   This is not equivalent to ChunkedLOD,
rather just one component of such as system, although I'd guess
DatabasePager is far more capable than most paging systems that you'll
find on ChunkedLOD implementations.

The division of the database up is pre-processing step that is done by
VirtualPlanetBuilder, which builds a hierarchical tiled database.  VTP
is extremely scalable and can terrabyte geospatial whole earth
databases.  All the databases generated by VTB are viewable in OSG
applications, with the DatabasePager managing the paging automatically
for you, and either standard osg::Geometry/osg::StateSet/osg::Node
subgraphs or osgTerrain based subgraphs handling the scene
representation and rendering.   VTB is the only source tool of its
kind as far as I'm aware.

Put osgDB::DatabasePager and VTP generated databases together and you
have something that is far more scalable and capable than a ChunkedLOD
implementation.

Robert.


originally someone did a test with photo realistic terrain.
video (40s):
High resolution (26 Mo) http://documents.cigognes.net/csp/csp-terrain-photo.avi
Low resolution (YouTube) http://fr.youtube.com/watch?v=1NlZoylXrlo

we are a little bit confused.
http://csp.sourceforge.net/forum/viewtopic.php?p=4616#4616

is http://www.openscenegraph.org/projects/osg/wiki/Support/UserGuides/osgdem 
what you mean or are we on the wrong way?

with VirtualPlanetBuilder you mean 
http://www.openscenegraph.org/projects/VirtualPlanetBuilder
with VTP you mean http://www.vterrain.org/
i did not find anything about VTB, is it a mistyped VTP?


thanks for your help in our confusion.

best regards
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Re: [osg-users] AnimationPathCallback timeMultiplier

2008-09-04 Thread Dickinson, Alan J.

Hi Ulrich and Robert,

I agree with you Ulrich. I have been looking at the getAnimationTime
method which uses an absolute time calculation instead of a relative
delta time approach. I am working on adding a _prevTime instance
variable to the operator() method to save the _latestTime from the
previous timestamp. Then calculate the animationTime as you suggested. 

Not sure how the timeOffset is suppose to work. In the original absolute
formula it is subtracted from the ((Tlast-Tfirst) - timeOffset) *
timeMultiplier but that seems to be a negative offset. Is this the
correct interpretation or am I missing the intent of the timeOffset.

Also I am in the process of adding the ability to single step the
animation while it is paused. I think I need to change the pauseTime by
my stepSize to make this happen but I need to fix the getAnimationTime
method first. 

How do I force the animation to redraw while it is paused with the new
pauseTime value?

FYI: I have been working with both 2.4 and 2.6 released versions
currently...

Thanks again for your help,

Alan

>Hi Alan and Robert,

>Robert Osfield wrote:
>> The sounds very much like a bug where the pause code is being broken
>> by changes in the multiplier.  Have a look at the
>> AnimationPathCallback implementation to see if you can spot what
might
> amiss.

>I believe this behaviour is due to the way the animation time is
calculated.

>It's not incremental (t += dt * timeMultiplier) which would be
continuous when the
>multipler changes, but absolute (t = (Tlast - Tfirst) * timeMultiplier)
which will jump
>when you change the multiplier.

Alan Dickinson

SAIC Intelligent Systems Applications Division

Sr. Software Engineer

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[osg-users] osgmultiplerendertargets

2008-09-04 Thread paul1492

I'm getting a segmentation fault when running the osgmultiplerendertargets 
example using OSG 2.6 under Linux.The call stack says its in 
RenderStage::runCameraSetUp. My OSG isn't currently compiled debug. Am I doing 
something wrong? Do I need command line arguments?

Paul P


  
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Re: [osg-users] Using Kd-tree for spatial data

2008-09-04 Thread maruti borker

Thanks for pointing out , i looked into the discussion and i think the
current setupd with kd-trees wont help me with my idea. Can anyone point me
to some tool/project which creates just the kd-tree ( near to optimal )
given a 3d scene . Any help would be appreciated.

Thanks

Maruti Borker
IIIT Hyderabad
Website:- http://students.iiit.ac.in/~maruti
Blog:- http://marutiborker.wordpress.com


On Thu, Sep 4, 2008 at 3:00 PM, Robert Osfield <[EMAIL PROTECTED]>wrote:

> HI Maruti,
>
> Lots was discussed on osg-users about the KdTree implementation in the
> OSG when I intergrated the functionality, so have a look through the
> osg-users archives in June and July.   The quick answer is that
> KdTree's hang off Drawables, and when do intersection testing first
> coarsed grained culling is done by the scene graphs hierachy of
> bounding spheres/boxes, then finally fine grained testing is done
> against the KdTree hanging of the drawables.
>
> Robert.
>
> On Thu, Sep 4, 2008 at 7:27 AM, maruti borker <[EMAIL PROTECTED]>
> wrote:
> >
> > Hello,
> >I was amazed to see the development  OSG has made, the
> > last version i used it was 2.3.4. Coming to the topic,  i wanted to know
> how
> > a scenegraph was being linked to a kd-tree for finding out intersections.
> I
> > am thinking of an application which needs querying of spatial data, for
> > which i thought of using kd-trees , but i also thought of having a
> > scenegraph for rendering purposes. I looked at a work "Razor:
> > Multi-resolution ray tracing for dynamic environments" by William mark
>  and
> > Warren hunt. They also lazily linked a scene-graoh and a kd-tree. I
> wanted
> > to know how the kd-tree is being linked to a scenegraph in OSG and also
> > whether i could actually access the kd-tree for performing algorithms on
> top
> > of it. And also an advice whether using this linkage in OSG is useful for
> > storing spatial data. Do mail back incase of any doubts or clarifications
> .
> >
> >
> > Maruti Borker
> > IIIT Hyderabad
> > Website:- 
> > http://students.iiit.ac.in/~maruti
> > Blog:- http://marutiborker.wordpress.com
> >
> > ___
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> >
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >
> >
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Re: [osg-users] poker_client_player_chips

2008-09-04 Thread Cedric Pinson


oops sorry bad mailing list

Cedric Pinson wrote:

Hi,

Here a patch to add a packet in client side (pokerexplain.py). This 
packet translate the player bet and player amount into chips stack 
unit. Like bet2pot, or player2bet packet. So now each 
poker_player_chips sent to the client is accompagned with a 
poker_client_player_chips.
The patch add the functionality and an update of test related to 
update of chips of player.



Something not related with my patch:
I noticed that in test the chips stack unit works fine but when 
connected to the table like jspoker.pokersource.info:20380 gameid:121 
the chips value seems to not be known because every packet generated 
on the client side after a normalize + a pokerchips the result is 
something like [1,5000]

Would it be possible the chips value are not sent to the clients ?

Cedric



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[osg-users] poker_client_player_chips

2008-09-04 Thread Cedric Pinson


Hi,

Here a patch to add a packet in client side (pokerexplain.py). This 
packet translate the player bet and player amount into chips stack unit. 
Like bet2pot, or player2bet packet. So now each poker_player_chips sent 
to the client is accompagned with a poker_client_player_chips.
The patch add the functionality and an update of test related to update 
of chips of player.



Something not related with my patch:
I noticed that in test the chips stack unit works fine but when 
connected to the table like jspoker.pokersource.info:20380 gameid:121 
the chips value seems to not be known because every packet generated on 
the client side after a normalize + a pokerchips the result is something 
like [1,5000]

Would it be possible the chips value are not sent to the clients ?

Cedric

--
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http://www.plopbyte.net


Index: pokernetwork/pokerexplain.py
===
--- pokernetwork/pokerexplain.py(revision 4409)
+++ pokernetwork/pokerexplain.py(working copy)
@@ -148,6 +148,7 @@
 chips = self.normalizeChips(game, 
chips))
 packets.append(packet)
 packets.append(self.updatePlayerChips(game, player))
+packets.append(self.explainPlayerChips(game, player))
 return packets
 
 def chipsBet2Pot(self, game, player, bet, pot_index):
@@ -165,8 +166,10 @@
  pot = pot_index)
 packets.append(packet)
 packets.append(self.updatePlayerChips(game, player))
+packets.append(self.explainPlayerChips(game, player))
 return packets
 
+
 def chipsPot2Player(self, game, player, bet, pot_index, reason):
 packet = PacketPokerChipsPot2Player(game_id = game.id,
 serial = player.serial,
@@ -314,6 +317,7 @@
 forward_packets.append(PacketPokerBoardCards(game_id = 
game.id, serial = self.getSerial()))
 for serial in game.player_list:
 
forward_packets.append(self.updatePlayerChips(game, game.serial2player[serial]))
+
forward_packets.append(self.explainPlayerChips(game, 
game.serial2player[serial]))
 forward_packets.extend(self.updatePotsChips(game, []))
 
 elif packet.type == PACKET_POKER_CANCELED:
@@ -482,11 +486,8 @@
 #
 player = game.getPlayer(packet.serial)
 player.buy_in_payed = True
-chips = PacketPokerPlayerChips(game_id = game.id,
-   serial = packet.serial,
-   money = player.money,
-   bet = player.bet)
-forward_packets.append(chips)
+forward_packets.append(self.updatePlayerChips(game, 
player))
+forward_packets.append(self.explainPlayerChips(game, 
player))
 
 elif packet.type == PACKET_POKER_PLAYER_CHIPS:
 player = game.getPlayer(packet.serial)
@@ -507,7 +508,9 @@
 player.money = packet.money
 if player.money > 0:
 player.buy_in_payed = True
+forward_packets.append(self.explainPlayerChips(game, player))
 
+
 elif packet.type == PACKET_POKER_FOLD:
 game.fold(packet.serial)
 if game.isSitOut(packet.serial):
@@ -652,7 +655,7 @@
 
 packets.extend(self.updatePotsChips(game, game.getPots()))
 return packets
-
+
 #
 # Should be move all bets back to players (for uncalled bets)
 # This is a border case we don't want to handle right now
@@ -696,6 +699,15 @@
 games.remove(exclude)
 return PacketPokerCurrentGames(game_ids = games,
count = len(games))
+
+def explainPlayerChips(self, game, player):
+packet = PacketPokerClientPlayerChips(game_id = game.id,
+  serial = player.serial,
+  bet = self.normalizeChips(game, 
player.bet),
+  money = 
self.normalizeChips(game, player.money) )
+return packet
+
+
 
 def packetsPot2Player(self, game):
 packets = []
@@ -747,6 +759,7 @@
 
 for player in game.serial2player.itervalues():
 packets.append(self.updatePlayerChips(game, player))
+packets.append(self.explainPlayerChips(game, player))
 packets.extend(self.updatePotsChips(game, []))
 return packets
 
Index: tests/test-pokeravatar.py.in

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