wangrui wrote:
> Hi Dave,
>
>
> One of the purpose of the osgRecipes project is to provide all source code
> used in the book OpenSceneGraph 3.0 Cookbook, published by Packt Publishing.
> And what you found is just corresponding to the second example in Chapter 5.
> And it should be a mistake... The correct code snippet, as shown in the book,
> is as below:
> image = osgDB::readImageFile( "0.ffmpeg", new osgDB::Options("format=vfwcap
> frame_rate=25") );
>
>
> It in fact uses the FFmpeg plugin to load video stream from the webcam using
> the VFW option. You may change the filename to some other disk files like
> "c:/path/file.avi.ffmpeg" and then ignore the option string. But there is no
> "animate PNG" support in OSG... so sorry for the misdirection. :-)
>
>
> Also thank you for supporting the osgRecipes project.
>
>
> Wang Rui
>
>
> ------------------ Original ------------------
> From: "Dave Sargrad";<>;
> Date: Wed, Apr 15, 2015 05:42 AM
> To: "osg-users"<>;
>
> Subject: OSG RECIPES Data
>
>
>
> Hi,
>
> I've found the osgRecipes (https://github.com/xarray/osgRecipes) to be quite
> useful. However most of the data is missing from these, and there is no
> proper reference to the location of the data. I stumbled on this
> (https://github.com/openscenegraph/osg-data) data. It seems to be a close fit
> to the recipes. However some data files are missing. For example right now
> I'm in cookbook_05_02. This cookbook is looking for one of two datafiles (in
> my case pic.png). I think this is just a placeholder, and I'm expected to
> drop my own "animated PNG" into place. I've tried several such png's found on
> the web, but none seem to do what one might expect.
>
>
> Code:
> osg::ref_ptr<osg::Image> image;
> if ( arguments.argc()>1 )
> image = osgDB::readImageFile( arguments[1] );
> else
> {
> #ifdef WIN32
> image = osgDB::readImageFile( "Images/bouncing_beach_ball.png" );
> #else
> image = osgDB::readImageFile( "/dev/video0.ffmpeg" );
> #endif
> }
>
> osg::ImageStream* imageStream = dynamic_cast<osg::ImageStream*>( image.get()
> );
> if ( imageStream ) imageStream->play();
>
>
>
> I've never used animated png's before so I'm not sure how best to find a
> compatible image.
>
> In this code snippet, I replaced pic.png with a bouncing_beach_ball.png found
> here
> (http://upload.wikimedia.org/wikipedia/commons/1/14/Animated_PNG_example_bouncing_beach_ball.png).
>
> Thank you for any insights.
>
> Cheers,
> Dave
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=63394#63394
>
>
>
>
>
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>
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
> ------------------
> Post generated by Mail2Forum
Thanks very much. This is quite helpful. Certainly no need for apologies. I
find that most of the cookbook examples are extremely informative. I look
forward to acquiring the book for the surrounding explanations.
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=63414#63414
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