[osg-users] osg-users Digest, Vol 138, Issue 27

Mon Dec 31 17:15:31 PST 2018

So If I use C++ .lib files, that are included on a class path,
I can just #include classnames to g++ via the -l instructions,
and I can access and code with classes directly that way, again?
________________________________
From: osg-users <osg-users-bounces at lists.openscenegraph.org> on behalf of osg-users-request at lists.openscenegraph.org <osg-users-request at lists.openscenegraph.org>
Sent: Tuesday, 1 January 2019 8:04 AM
To: osg-users at lists.openscenegraph.org
Subject: osg-users Digest, Vol 138, Issue 27

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Today's Topics:

   1. Question about .dll only usage. (A Z)
   2. Re: Question about .dll only usage. (Chris Hanson)
   3. Re: Question about .dll only usage. (Robert Osfield)
   4. [propal] compare VertexArrayState with current int
      state::setCurrentVAS (Julien Valentin)

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Message: 1
Date: Mon, 31 Dec 2018 09:04:31 +0000
From: A Z <poweruserm at live.com.au>
To: "osg-users at lists.openscenegraph.org"
        <osg-users at lists.openscenegraph.org>
Subject: [osg-users] Question about .dll only usage.
Message-ID:
        <SL2P216MB058855C72142CB91C3F2C2529AB20 at SL2P216MB0588.KORP216.PROD.OUTLOOK.COM>

Content-Type: text/plain; charset="iso-8859-1"

To whom it may concern,

is there a way to obtain OSG classes for source code usage
from the OSG .dll files without having to use windows.h
to request methods, fields, constructors one at a time?

If the class that I desire is located inside an OSG .dll file,
how can I access that class in exactly the same way
that #include allows me to do?  Without having to request
a method and then use it, etc...

Is there something that OSG do in this particular area with
regard to classes inside .dll files?
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Message: 2
Date: Mon, 31 Dec 2018 10:16:23 +0100
From: Chris Hanson <xenon at alphapixel.com>
To: OpenSceneGraph Users <osg-users at lists.openscenegraph.org>
Subject: Re: [osg-users] Question about .dll only usage.
Message-ID:
        <CAGoufmY8_aYT_FYMy7gZvwNon7bcnDJgvDyxgSiaavXhQjikZA at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

This is a really complicated and exotic request.

Can you maybe explain what you're trying to accomplish overall, rather than
asking so specifically about the way you are trying to accomplish it
presently?

On Mon, Dec 31, 2018 at 10:04 AM A Z <poweruserm at live.com.au> wrote:

> To whom it may concern,
>
> is there a way to obtain OSG classes for source code usage
> from the OSG .dll files without having to use windows.h
> to request methods, fields, constructors one at a time?
>
> If the class that I desire is located inside an OSG .dll file,
> how can I access that class in exactly the same way
> that #include allows me to do?  Without having to request
> a method and then use it, etc...
>
> Is there something that OSG do in this particular area with
> regard to classes inside .dll files?
> _______________________________________________
> osg-users mailing list
> osg-users at lists.openscenegraph.org
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>

--
Chris 'Xenon' Hanson, omo sanza lettere. Xenon at AlphaPixel.com
http://www.alphapixel.com/
Training ? Consulting ? Contracting
3D ? Scene Graphs (Open Scene Graph/OSG) ? OpenGL 2 ? OpenGL 3 ? OpenGL 4 ?
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@alphapixel <https://twitter.com/alphapixel> facebook.com/alphapixel (775)
623-PIXL [7495]
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Message: 3
Date: Mon, 31 Dec 2018 09:34:33 +0000
From: Robert Osfield <robert.osfield at gmail.com>
To: OpenSceneGraph Users <osg-users at lists.openscenegraph.org>
Subject: Re: [osg-users] Question about .dll only usage.
Message-ID:
        <CAFN7Y+V2NatWJHgOEA=nR5VZyY0MezRRcgpRHxpLBg+L9L2b2Q at mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"

Hi ???

The OSG has no dll specific mechanism, and while I have no WIndows
expertise my understanding is part of the point of the dll is that it
doesn't have a public interface, this is in the .lib.

However, the OSG has support of class introspection via the
serializers that are provided for the native binary/ascii/xml  reading
and writing.  The osgDB::ClassInterface class in 3.4 onwards provide a
means of querying what methods+properties are available, calling
methods and setting/getting properties and creating instances.

The most extensive example of ClassInterface in action is found in the
OpenSceneGraph/src/osgPlygins/lua plugin that uses ClassInterface to
automatically create bindings between the C++ OSG and Lua.

Cheers,
Robert.

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Message: 4
Date: Mon, 31 Dec 2018 16:32:44 +0100
From: "Julien Valentin" <julienvalentin51 at gmail.com>
To: osg-users at lists.openscenegraph.org
Subject: [osg-users] [propal] compare VertexArrayState with current
        int state::setCurrentVAS
Message-ID: <1546270364.m2f.75369 at forum.openscenegraph.org>
Content-Type: text/plain; charset=UTF-8

Hi,

What do you think of this kind of change:
-adding a VertexArrayState comparator ( compare vbos and ebo and their dispatch index)
-in State::SetCurrentVertexArrayState(vas):
if(current->compare(vas))return;
current=vas;

It would add a little overcost but would be quite usefull in case Drawable can share their vas...
With the current design (createvascallback) it's possible but kind of tricky..:/

Thank you!

Cheers,
Julien

------------------------
Twirling twirling twirling toward freedom

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