[osg-users] 3DS writer: starting to code

Hi all, For all of those interested in a 3DS *writer* plugin, I begin coding. However: - I only need a very basic one (faces, texture coords, simple materials), so if I'm alone this going to be an incomplete one - I don't have much time (of course... else it wouldn't be fun...) - I know very few

Re: [osg-users] 3D HUD Elements

Hi Jimmy, If you are doing the frame loop you know when it's the first frame before you just place any viewer setup prior to the frame loop. The _firstFrame code block you see if just a fallback in case the viewer hasn't already been setup. Robert. On Wed, Aug 19, 2009 at 10:49 PM, Jimmy Lin wr

Re: [osg-users] osg 2.2 Adding and removing eventhandlers

Hi Robert, Thanks for the reply, can i use the newer versions of osg with visual studio 2003? I am trying to create a button class and thus i would like to embed the behaviours and event handling into the class itself. Is my approach wrong? Should i be creating a separate class for event handl

Re: [osg-users] osg 2.2 Adding and removing eventhandlers

Hi James, >From your email It isn't at all clear what you are doing, why you are doing it, let alone what you are doing wrong. It's very odd that you are trying to add a node as a event handler to the viewer. The OSG has an event traversal that will ensure your node gets events. Please have a l

[osg-users] Navigation control

Hi, I would like to design a navigation control similar to the one what google earth is using for navigating my terrain DB. I have OSG 2.2 installed. Do I need anything extra to do that? osgWidget is not available in that. How to do that? Thank you! Cheers, Akilan -- Read this

Re: [osg-users] Navigation control

You will need to write your own motion controller / Model / Manipulator See OpenSceneGraph\include\osgGA and OpenSceneGraph\src\osgGA There are several Manipulators there that will show you how you can write your own to do exactly what you want and need Gordon Product Manager 3d __

Re: [osg-users] OSG 2.8.2 rpms for Centos 5 and RedHat 5

Peter Bear wrote: > Hi, > > I got the error "libcurl.so.3()(64bit) is needed by package > OpenSceneGraph-libs-2.8.2-1.x86_64 (/OpenSceneGraph-libs-2.8.2-1.x86_64)" > while installing the libraries, and yes, I have checked and yum says curl is > installed. > > Cheers, > Peter Can you show me t

[osg-users] Compress image

is there any function that compress image in osg? for example i have an 256x256 image and i want to compress it to 128x128 or 64x64... i checked for osg::Image::scaleImage() but it did not change the resolution.. maybe i did something wrong? Here is the code:

Re: [osg-users] Compress image

Hi Ufuk; Compress word doesn't define your expected operation very well. This operation's name is Mipmapping. You should generate automatic mipmapping for your texture in runtime and the you can choose any resolution you have created to use your program. Regards. Ümit Uzun 2009/8/20 Ufuk > i

Re: [osg-users] Compress image

Hi Ümit,yes, i need mipmapping but i want to store these mipmapped textures on disk. i dont want so many calculations on rendering... so i wanted to store these images on disk. do you know a way to do this or i should write a code? On Thu, Aug 20, 2009 at 5:43 PM, Ümit Uzun wrote: > Hi Ufuk; >

Re: [osg-users] Compress image

Hi Ufuk, yes, i need mipmapping but i want to store these mipmapped textures on disk. i dont want so many calculations on rendering... so i wanted to store these images on disk. You could just use a tool that converts your images to .dds with embedded mipmaps, I think in recent versions of O

Re: [osg-users] 3DS loader revisited?

Hi Robert, Good news! I've sync'd the 3DS reader with lib3DS 2.0.0-rc1 (well, I need to modify the CMakeList now). I'm not 100% sure that the one I used ( http://www.lib3ds.org/ ) is the same as the one used in OSG... Am I wrong ? If not, is it a problem ? Should the lib3DS files be in osgPlug

Re: [osg-users] Compress image

Hi Ufuk; If you want to create mippaped images on your disk instead of programmaticaly. I suggest you to use GIMP to mipmap(rescale each different resolution image separately) and when you need you can call related resolution image :) Is this your expected or you want to create one image which ha

Re: [osg-users] Compress image

actually i just want to have a scale code of image.. half and quarter resolution would be enough for me.. i wanted to scale them when i create terrain. i have a terrain editor and viewer which are 2 separate programs. on editor, in saving process, i want to store lower resolution textures too and

Re: [osg-users] 3DS loader revisited?

Hi Sukender, On Thu, Aug 20, 2009 at 3:57 PM, Sukender wrote: > Good news! I've sync'd the 3DS reader with lib3DS 2.0.0-rc1 (well, I need to > modify the CMakeList now). I'm not 100% sure that the one I used ( > http://www.lib3ds.org/ ) is the same as the one used in OSG... Am I wrong ? > If no

Re: [osg-users] Frame rates vary dramatically across runs

Hi Wojtek, I've done my best to enjoy my vacation(s!) and now will take joy in pestering you about the changes we discussed, did you get around to making them :-) Cheers, Robert. On Mon, Jul 27, 2009 at 4:27 PM, Wojciech Lewandowski wrote: > Robert, > > I'll try to do it. > Enjoy your vacations,

Re: [osg-users] Compress image

Hi Ufuk, To do OpenGL calls like the gluScale that osg::Image::scaleImage invokes you must call it from a thread that has valid graphics context current, otherwise you'll at best get a non, but most likely corruption/crashes. This may or may not be the problem in your case. Robert. On Thu, Aug

Re: [osg-users] Frame rates vary dramatically across runs

Hi Wojtek, Arg... I'm working through my osg-submission backlog but didn't spot the thread your submitted the changes on as being connected. I should have read through all the submissions before posting... I've tracked down the appropriate thread now - I've even commented on the thread last week

[osg-users] Loading an osg::Image using setImage

Hi there, I am trying to load an osg::Image using the setImage method - inparticular I am copying a Managed bitmap (System.Drawing.Bitmap) to the osg::Image to use it as a texture map. As you can see I'm having a few problems. Here's the osg::Image texture mapped onto a quad when I load it i

[osg-users] Orienting a model (matrixtrans) toward a target location?

Hello all! I've searched through the forums and all over google and can't seem to find anything on this subject. I'm sure this probably isn't TOO complicated but I'm still new to this and my graphics / linear knowledge probably isn't what it should be. Here's my problem.. or what I'm attempt

Re: [osg-users] Loading an osg::Image using setImage

Hi Andrew, It looks like the original bitmap is in BGR format, so you will probably need to use the GL_BGR pixel format when calling setImage(). To unflip the image it seems like you can iterate backwards over the source image inside your copy loop: ptrSourceRow = ptrSrcImage + ( (iHeight - 1 - i

[osg-users] Shdows Problem o vista

Hi, I'm using Visual Studio 2008 with osg 2.8.1. I have vary strange problem with with shadows on my scene. On vista all shadows are moved chaoticaly (see attached pictures ). However on XP everything is OK and I can see my shadows casted by camera lights. I'm using the following code: const

Re: [osg-users] Loading an osg::Image using setImage

Hmm, well that was easy! The flipping of rows worked fine, to set the image I used GL_BGR for pixel format only, keeping GL_RGB as internal pixel format (else I got a gray square). Thank you for an extremely helpful response :) Andrew On Thu, Aug 20, 2009 at 6:15 PM, Farshid Lashkari wrote: >

Re: [osg-users] Convert paged to non-paged terrain database

Justin wrote: > Thanks to Robert and Paul, I created the attached application to do the > terrain database conversion. Perhaps it will be of some use to someone else. > > Using this application, my paged database of 655936 kB was converted to a > non-paged database of 415288 kB. > > Of course

[osg-users] textures in shaders

Hello, I have been having some trouble rendering textured models with shaders. I am a little confused about how to set the sampler uniform to the textures. Also, from my understanding, if a vertex shader is not specified that functionality is pushed to the fixed pipeline? Here is what I have.

Re: [osg-users] Convert paged to non-paged terrain database

On Thursday 20 August 2009 10:53:13 Appolloni, Thomas wrote: > > Of course, I decided to take it a step further and perform texture > > conversions > > > as well. I wanted to convert the .dds texture files to .jpg. This > > code is > > > stubbed in; however, it does not work. I thought I could s

Re: [osg-users] textures in shaders

Michele Olsen wrote: Hello, I have been having some trouble rendering textured models with shaders. I am a little confused about how to set the sampler uniform to the textures. Also, from my understanding, if a vertex shader is not specified that functionality is pushed to the fixed pipeline

Re: [osg-users] textures in shaders

> 'd double-check that the model is > actually using texture unit 1. I've seen some COLLADA models > (particularly those exported from 3ds MAX) that try to use texture unit > 1 instead. That did it!! Thank you!! Michele -- Read this topic online here: http://forum.openscenegra

Re: [osg-users] softshadowmap and glsl shader

Hi, This looks to be the answer to my problem [url] http://forum.openscenegraph.org/viewtopic.php?p=16504#16504[/url] if the link doesn't work try searching for texture in shader -Michele -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=16506#1650

[osg-users] apply() method??

Hi, I dont understand why apply() method is used in osg??? That means a function needs to be applied for all particular node types?? Thank you! Cheers, Tim -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=16508#16508 _

Re: [osg-users] apply() method??

Tim Allen wrote: Hi, I dont understand why apply() method is used in osg??? That means a function needs to be applied for all particular node types?? http://en.wikipedia.org/wiki/Visitor_pattern ( replace visit() with apply() ) --"J" ___

Re: [osg-users] apply() method??

Hi Jason Thank you very much for the quick reply. Cheers, Tim -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=16510#16510 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.ope

Re: [osg-users] apply() method??

Tim Allen wrote: Hi Jason Thank you very much for the quick reply. No problem. OSG makes use of several of those design patterns. If you're interested in how things are working under the hood, you might want to pick up the book by Gamma et al... http://tinyurl.com/yxlas4 --"J" __

Re: [osg-users] Orienting a model (matrixtrans) toward a target location?

Hi Kris, Is the target moving too? Cheers, Tony -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=16513#16513 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.

[osg-users] osg Manipulator example problem

Hi, i have included the code of the osg Manipulator Example from openscenegraph.org. But if i try to compile my code i get some errors, that - addTransformUpdating - setHandleEvents - setActivationModKeyMask - setActivationKeyEvent are no Elements of osgManipulator::Dragger!? Does I need an in

Re: [osg-users] Orienting a model (matrixtrans) toward a target location?

Tony Horrobin wrote: > Hi Kris, > Is the target moving too? > Cheers, You know, my first contact with our own Paul Martz was way back in the late 90s when he gave me some code for a glLookAt type implementation. I'll see if I still have it around -- it still is deeply buried in some old 3d cod

Re: [osg-users] Orienting a model (matrixtrans) toward atarget location?

Chris 'Xenon' Hanson wrote on Thursday, August 20, 2009 5:13 PM: > Tony Horrobin wrote: >> Hi Kris, >> Is the target moving too? >> Cheers, > > You know, my first contact with our own Paul Martz was way back in the late > 90s when he gave me some code for a glLookAt type implementation. I'll se

Re: [osg-users] Orienting a model (matrixtrans) toward atarget location?

Thrall, Bryan wrote: > There's osg::Matrix::makeLookAt() Wow. if only that were named something intuitive that I would have thought to look for. Or Look At, as the case may be. ;) Does that answer your question, Kris? -- Chris 'Xenon' Hanson, omo sanza lettere Xenon AlphaP

Re: [osg-users] apply() method??

Thank you.I also have one more question,In some source example I find derived class is derived from osg::Drawable::UpdateCallback instead of a NodeCallback or DrawableCallback.Why is it used?? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=16519#1

Re: [osg-users] apply() method??

Hi Please note that you should ask a new question by starting a new email thread. This makes it easier for people to follow threads and maybe answer and even find answers them selves When you would use a draw call back, or an update call back is totality dependent on what you're doing, are you up

Re: [osg-users] Compress image

Hi Ufuk, Ufuk wrote: actually i just want to have a scale code of image.. half and quarter resolution would be enough for me.. i wanted to scale them when i create terrain. if you are working with terrain I would suggest you also look at the GDAL functions/lib. E.g. have a look at the gdala

Re: [osg-users] Need help regarding rendering to a texture

Hi Brett, problem seems to be that lighting was on in your RTT camera. See attached. I added geode->getOrCreateStateSet()->setMode( GL_LIGHTING, osg::StateAttribute::OFF); Also be aware of the way OSG blends your RTT texture with your final geometry. OSG defaults to GL_MODULATE. Search h