[osg-users] Problems porting from osg-3.4.0 to osg-3.6.0
Herman Varma
hermanvarma at eastlink.ca
Sun Sep 23 07:51:00 PDT 2018
Hi Robert,
Just a quick note.
In OpenSceneGraph-3.6.2 in the mipmap.cpp module.
I got a warning
c:\apis\openscenegraph-3.6.2\src\osg\glu\libutil\mipmap.cpp(6490): warning
C4701: potentially uninitialized local variable 'outindex' used
I initialized the declaration on line 6116
To int outindex=0;
Everything works
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Today's Topics:
1. Re: Problems porting from osg-3.4.0 to osg-3.6.0 (Herman Varma)
2. Re: Advice requested: Is OSG what I need for my project?
(Jan Ciger)
3. Re: Problems porting from osg-3.4.0 to osg-3.6.0 (Robert Osfield)
4. Re: Advice requested: Is OSG what I need for my project?
(Chris Hanson)
5. Re: problems with osg-3.4.0 port to osg-3.6.0 (Chris Hanson)
----------------------------------------------------------------------
Message: 1
Date: Thu, 13 Sep 2018 14:47:55 +0200
From: "Herman Varma" <hermanvarma at eastlink.ca>
To: osg-users at lists.openscenegraph.org
Subject: Re: [osg-users] Problems porting from osg-3.4.0 to osg-3.6.0
Message-ID: <1536842875.m2f.74741 at forum.openscenegraph.org>
Content-Type: text/plain; charset=UTF-8
Hi Robert,
I am new in OSG so please be patient. I am still reading the book.
Just to clarify I should replace in the class CSimpleInterimShadowTechnique
CSimpleInterimShadowTechnique();
CSimpleInterimShadowTechnique(const CSimpleInterimShadowTechnique&
es, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
META_Object(osgShadow, CSimpleInterimShadowTechnique);
with
CSimpleInterimShadowTechnique();
CSimpleInterimShadowTechnique(const CSimpleInterimShadowTechnique& es, const
osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY);
virtual bool isSameKindAs(const osg::Object* obj) const { return
dynamic_cast<const CSimpleInterimShadowTechnique*>(obj) != NULL; } \
virtual const char* libraryName() const { return "osgShadow"; }\
virtual const char* className() const { return
"CSimpleInterimShadowTechnique"; }
removing META_object
and also add
/** Resize any per context GLObject buffers to specified size. */
virtual void resizeGLObjectBuffers(unsigned int maxSize) = 0;
/** If State is non-zero, this function releases any associated
OpenGL objects for
* the specified graphics context. Otherwise, releases OpenGL
objects
* for all graphics contexts. */
virtual void releaseGLObjects(osg::State* = 0) const = 0;
to the class.
Do I have this right?
Thank you!
Cheers,
Herman
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=74741#74741
------------------------------
Message: 2
Date: Thu, 13 Sep 2018 14:53:57 +0200
From: Jan Ciger <jan.ciger at gmail.com>
To: OpenSceneGraph Users <osg-users at lists.openscenegraph.org>
Subject: Re: [osg-users] Advice requested: Is OSG what I need for my
project?
Message-ID:
<CALFd4CcHBQWNO99exD-uHA979NDf0v1ba0CL6VU+uA61Dfwc2A at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
On Thu, 13 Sep 2018 at 14:45, Scott Schultz <prvteye at yahoo.com> wrote:
> ;tldr version:
>
> Given a start point and end point, can OSG give me a list of collisions
> with geometry along the specified line segment?
>
>
Sure it can do that. There is even an example in the repository for it:
https://github.com/openscenegraph/OpenSceneGraph/blob/master/examples/osgint
ersection/osgintersection.cpp
J,
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Message: 3
Date: Thu, 13 Sep 2018 14:31:13 +0100
From: Robert Osfield <robert.osfield at gmail.com>
To: OpenSceneGraph Users <osg-users at lists.openscenegraph.org>
Subject: Re: [osg-users] Problems porting from osg-3.4.0 to osg-3.6.0
Message-ID:
<CAFN7Y+VjnAzmb6zJMV+Qq83TwWnb+bd-79SEn7=Q-=3Ncb9nbQ at mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Hi Harman
On Thu, 13 Sep 2018 at 13:55, Herman Varma <hermanvarma at eastlink.ca> wrote:
> Just to clarify I should replace in the class
CSimpleInterimShadowTechnique
>
>
> CSimpleInterimShadowTechnique();
> CSimpleInterimShadowTechnique(const CSimpleInterimShadowTechnique&
es, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
> META_Object(osgShadow, CSimpleInterimShadowTechnique);
>
>
> with
>
> CSimpleInterimShadowTechnique();
> CSimpleInterimShadowTechnique(const CSimpleInterimShadowTechnique& es,
const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY);
>
> virtual bool isSameKindAs(const osg::Object* obj) const { return
dynamic_cast<const CSimpleInterimShadowTechnique*>(obj) != NULL; } \
> virtual const char* libraryName() const { return "osgShadow"; }\
> virtual const char* className() const { return
"CSimpleInterimShadowTechnique"; }
There should be no need to replace the use of META_Object, the
original code should be fine. The only reason why META_Object macro
wasn't working is because the CSimpleInterimShadowTechnique doesn't
implement the pure virtual methods that have been added in 3.6.x - the
ones I mentioned above.
> and also add
>
> /** Resize any per context GLObject buffers to specified size. */
> virtual void resizeGLObjectBuffers(unsigned int maxSize) = 0;
>
> /** If State is non-zero, this function releases any associated
OpenGL objects for
> * the specified graphics context. Otherwise, releases OpenGL
objects
> * for all graphics contexts. */
> virtual void releaseGLObjects(osg::State* = 0) const = 0;
>
> to the class.
>
> Do I have this right?
Yes, but you'll have to actually implement as well :-)
Have a look at the include/osgShadow/ShadowMap example as it
subclasses from ShadowTechnique is uses META_Objects and override the
required methods. Have a look at the src/osgShadow/ShadowMap.cpp to
see how the
resizeGLObjectBuffers and releaseGLObjects are implemented.
Robert
------------------------------
Message: 4
Date: Thu, 13 Sep 2018 18:55:17 +0100
From: Chris Hanson <xenon at alphapixel.com>
To: OpenSceneGraph Users <osg-users at lists.openscenegraph.org>
Subject: Re: [osg-users] Advice requested: Is OSG what I need for my
project?
Message-ID:
<CAGoufmYjmum=E=dJbzN2rtGvr+OnSoKLnrSATpB9CjQEb+uNyQ at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Seconded, yes.
You can also potentially make hierarchical structures of the graph to
improve the performance of the intersection process.
You would not need ODE.
You could even construct an OSG loader to deserialize the sphereville graph
natively so that you could use OSG's databasepager and LOD tools to roam
around the graph loading and unloading the bounds dynamically.
On Thu, Sep 13, 2018 at 1:54 PM Jan Ciger <jan.ciger at gmail.com> wrote:
>
> On Thu, 13 Sep 2018 at 14:45, Scott Schultz <prvteye at yahoo.com> wrote:
>
>> ;tldr version:
>>
>> Given a start point and end point, can OSG give me a list of collisions
>> with geometry along the specified line segment?
>>
>>
> Sure it can do that. There is even an example in the repository for it:
>
>
https://github.com/openscenegraph/OpenSceneGraph/blob/master/examples/osgint
ersection/osgintersection.cpp
>
> J,
> _______________________________________________
> 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 ?
GLSL ? OpenGL ES 1 ? OpenGL ES 2 ? OpenCL
Legal/IP ? Forensics ? Imaging ? UAVs ? GIS ? GPS ?
osgEarth ? Terrain ? Telemetry ? Cryptography ? LIDAR ? Embedded ? Mobile ?
iPhone/iPad/iOS ? Android
@alphapixel <https://twitter.com/alphapixel> facebook.com/alphapixel (775)
623-PIXL [7495]
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Message: 5
Date: Thu, 13 Sep 2018 18:57:00 +0100
From: Chris Hanson <xenon at alphapixel.com>
To: OpenSceneGraph Users <osg-users at lists.openscenegraph.org>
Subject: Re: [osg-users] problems with osg-3.4.0 port to osg-3.6.0
Message-ID:
<CAGoufmbP22J-HO74xLp_XJkjoZmJ_bTpEmTHg=EzqUoXqbneog at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Did you ask Ben himself?
He's moving to Hawaii just now, but might be able to comment. I can ping
him if you don't get an answer here.
On Thu, Sep 13, 2018 at 7:48 AM Herman Varma <hermanvarma at eastlink.ca>
wrote:
> Hello I am having trouble porting Ben Discoe?s VTP software from
> openSceneGraph-3.4.0 to osg-3.6.2
>
> The problem lies in replacing the META_object with a macro in
> shadowTechnique.h as depicted below.
>
> Can someone point out where the problem is.
>
> /** CSimpleInterimShadowTechnique provides an implementation of a depth
> map shadow tuned to the needs of VTP.*/
>
> class CSimpleInterimShadowTechnique : public osgShadow::ShadowTechnique
> {
> public:
>
> // working ********************** in opemSceneGraph-3.4.0
> // CSimpleInterimShadowTechnique();
> // CSimpleInterimShadowTechnique(const
> // CSimpleInterimShadowTechnique& es, const osg::CopyOp&
> // copyop=osg::CopyOp::SHALLOW_COPY);
> // META_Object(osgShadow, CSimpleInterimShadowTechnique);
> //***********************************************************
>
> // not working *********************in opemSceneGraph-3.6.2
> CSimpleInterimShadowTechnique();
> CSimpleInterimShadowTechnique(const CSimpleInterimShadowTechnique&
> es, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY);
>
> virtual bool isSameKindAs(const osg::Object* obj) const { return
> dynamic_cast<const CSimpleInterimShadowTechnique*>(obj) != NULL; } \
> virtual const char* libraryName() const { return "osgShadow"; }\
> virtual const char* className() const { return
> "CSimpleInterimShadowTechnique"; }
>
>
> //**************************************************************
>
>
> In the new implementation I am getting a C2259 error
>
> 2>c:\vtp_vsc\terrainsdk\vtlib\vtosg\nodeosg.cpp(1026): error C2259:
> 'CSimpleInterimShadowTechnique': cannot instantiate abstract class
>
> 2>c:\vtp_vsc\terrainsdk\vtlib\vtosg\nodeosg.cpp(1026): note: due to
> following members:
>
> 2>c:\vtp_vsc\terrainsdk\vtlib\vtosg\nodeosg.cpp(1026): note: 'osg::Object
> *osg::Object::cloneType(void) const': is abstract
>
> 2>c:\apis\openscenegraph-3.6.2\build\include\osg\object(80): note: see
> declaration of 'osg::Object::cloneType'
>
> 2>c:\vtp_vsc\terrainsdk\vtlib\vtosg\nodeosg.cpp(1026): note: 'osg::Object
> *osg::Object::clone(const osg::CopyOp &) const': is abstract
>
> 2>c:\apis\openscenegraph-3.6.2\build\include\osg\object(84): note: see
> declaration of 'osg::Object::clone'
>
> 2>c:\vtp_vsc\terrainsdk\vtlib\vtosg\nodeosg.cpp(1026): note: 'void
> osgShadow::ShadowTechnique::resizeGLObjectBuffers(unsigned int)': is
> abstract
>
>
2>c:\apis\openscenegraph-3.6.2\build\include\osgshadow\shadowtechnique(66):
> note: see declaration of
'osgShadow::ShadowTechnique::resizeGLObjectBuffers'
> 2>c:\vtp_vsc\terrainsdk\vtlib\vtosg\nodeosg.cpp(1026): note: 'void
> osgShadow::ShadowTechnique::releaseGLObjects(osg::State *) const': is
> abstract
>
2>c:\apis\openscenegraph-3.6.2\build\include\osgshadow\shadowtechnique(71):
> note: see declaration of 'osgShadow::ShadowTechnique::releaseGLObjects'
>
> The error manifests is in the vtShadow section of nodeOSG.cpp
>
> //////////////////////////////////////////////////////////////////////
> // vtShadow
> //
>
> vtShadow::vtShadow(const int ShadowTextureUnit, int LightNumber) :
> m_ShadowTextureUnit(ShadowTextureUnit), m_LightNumber(LightNumber)
> {
> setReceivesShadowTraversalMask(ReceivesShadowTraversalMask);
> setCastsShadowTraversalMask(CastsShadowTraversalMask);
>
> #if VTLISPSM
> osg::ref_ptr<CLightSpacePerspectiveShadowTechnique>
> pShadowTechnique = new CLightSpacePerspectiveShadowTechnique;
> // No need to set the BaseTextureUnit as the default of zero is OK
> for us
> // But the ShadowTextureUnit might be different (default 1)
> pShadowTechnique->setShadowTextureUnit(m_ShadowTextureUnit);
> pShadowTechnique->setLightNumber(m_LightNumber);
> #else
>
> //errorC2259 cannot instantiate abstract class in openSceneGraph-3.6.2
> //working in osg-3.4.0
>
> osg::ref_ptr<CSimpleInterimShadowTechnique> pShadowTechnique = new
>
> #endif
>
> #if !VTLISPSM
> #if VTDEBUGSHADOWS
> // add some instrumentation
> pShadowTechnique->m_pParent = this;
> #endif
>
> pShadowTechnique->SetLightNumber(LightNumber);
> pShadowTechnique->SetShadowTextureUnit(m_ShadowTextureUnit);
> pShadowTechnique->SetShadowSphereRadius(50.0);
> #endif
> setShadowTechnique(pShadowTechnique.get());
>
> SetOsgNode(this);
> }
>
> Help would be appreciated
>
>
> Thank you!
>
> Cheers,
>
> Herman Varma
> Head of Cartographic Research
> Bedford Institute of Oceanography
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=74733#74733
>
>
>
>
>
> _______________________________________________
> 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 ?
GLSL ? OpenGL ES 1 ? OpenGL ES 2 ? OpenCL
Legal/IP ? Forensics ? Imaging ? UAVs ? GIS ? GPS ?
osgEarth ? Terrain ? Telemetry ? Cryptography ? LIDAR ? Embedded ? Mobile ?
iPhone/iPad/iOS ? Android
@alphapixel <https://twitter.com/alphapixel> facebook.com/alphapixel (775)
623-PIXL [7495]
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