demeter-main

[Demeter-main] installation confusion

[William T. <wht...@gm...>]

Hello,

You all are much more experienced than I am.
I can not seem to find instructions on how to install the program or the
dependencies.

Could some one please point me in the right direction on how to make this
work with winxp and visual studio?

Thank you,
Bil

[Demeter-main] Demeter 3.21 - compiling against OSG 2.8 and Fedora11 64Bits

[Guido M. <gmi...@gm...>]

to compile a project that use demeter and OSG I downloaded
demeter-3.21.tar.gz from SourceForge.net download page.

I need Demeter and DemeterOSG libraries for the project to work.

Decompressed the file and as the README says:

./configure (this is the output)

-- checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking for style of include used by make... GNU
checking for gcc... gcc
checking for C compiler default output... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ANSI C... none needed
checking dependency style of gcc... gcc3
checking how to run the C preprocessor... gcc -E
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking dependency style of g++... gcc3
checking for a BSD-compatible install... /usr/bin/install -c
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking for ld used by GCC... /usr/bin/ld
checking if the linker (/usr/bin/ld) is GNU ld... yes
checking for /usr/bin/ld option to reload object files... -r
checking for BSD-compatible nm... /usr/bin/nm -B
checking for a sed that does not truncate output... /bin/sed
checking whether ln -s works... yes
checking how to recognise dependent libraries... pass_all
checking command to parse /usr/bin/nm -B output... ok
checking for egrep... grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking dlfcn.h usability... yes
checking dlfcn.h presence... yes
checking for dlfcn.h... yes
checking for ranlib... ranlib
checking for strip... strip
checking for objdir... .libs
checking for gcc option to produce PIC... -fPIC
checking if gcc PIC flag -fPIC works... yes
checking if gcc static flag -static works... no
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.lo... yes
checking if gcc supports -fno-rtti -fno-exceptions... yes
checking whether the linker (/usr/bin/ld) supports shared libraries... yes
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking dynamic linker characteristics... GNU/Linux ld.so
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking whether -lc should be explicitly linked in... no
creating libtool
checking for ranlib... (cached) ranlib
checking for glBegin in -lGL... yes
checking for gluProject in -lGLU... yes
checking for xml2-config... yes
checking for sdl-config... yes
checking for atexit... yes
checking for memset... yes
checking for pow... no
checking for sqrt... no
checking for strstr... yes
checking for Open Scene Graph... OSG Detected - building OSG support
checking for Geospatial Data Abstraction Library... GDAL Detected - building
GDAL support
checking how to run the C++ preprocessor... g++ -E
checking for ANSI C header files... (cached) yes
checking malloc.h usability... yes
checking malloc.h presence... yes
checking for malloc.h... yes
checking for an ANSI C-conforming const... yes
checking for inline... inline
checking whether struct tm is in sys/time.h or time.h... time.h
checking for stdbool.h that conforms to C99... yes
checking for _Bool... no
configure: creating ./config.status
config.status: creating Makefile
config.status: creating src/Makefile
config.status: creating src/osg/Makefile
config.status: creating src/elevationloaders/Makefile
config.status: creating src/elevationloaders/demeter/Makefile
config.status: creating src/elevationloaders/gdal/Makefile
config.status: creating src/textureloaders/Makefile
config.status: creating src/textureloaders/demeter/Makefile
config.status: creating src/textureloaders/sdl/Makefile
config.status: creating samples/Makefile
config.status: creating samples/SampleRawApplication/Makefile
config.status: creating samples/SampleGDALApplication/Makefile
config.status: creating samples/SampleSkyBoxApplication/Makefile
config.status: creating samples/SamplePaintApplication/Makefile
config.status: creating samples/SampleOSGApplication/Makefile
config.status: creating samples/SampleEditApplication/Makefile
config.status: creating samples/SampleTerrainLatticeApplication/Makefile
config.status: creating samples/SampleDemeterApplication/Makefile
config.status: creating samples/SampleProceduralTextureApplication/Makefile
config.status: creating include/Demeter/config.h
config.status: include/Demeter/config.h is unchanged
config.status: executing default-1 commands

then I did "make" then the following error appears:

Making all in src
make[1]: Entering directory `/home/gmilitel/Projects/demeter-3.21/src'
Making all in osg
make[2]: Entering directory `/home/gmilitel/Projects/demeter-3.21/src/osg'
source='DemeterDrawable.cpp' object='DemeterDrawable.lo' libtool=yes \
    depfile='.deps/DemeterDrawable.Plo'
tmpdepfile='.deps/DemeterDrawable.TPlo' \
    depmode=gcc3 /bin/sh ../../config/depcomp \
    /bin/sh ../../libtool --mode=compile g++ -DHAVE_CONFIG_H -I. -I.
-I../../include/Demeter -I../../include    -g -O2 -c -o DemeterDrawable.lo
`test -f DemeterDrawable.cpp || echo './'`DemeterDrawable.cpp
rm -f .libs/DemeterDrawable.lo
g++ -DHAVE_CONFIG_H -I. -I. -I../../include/Demeter -I../../include -g -O2
-c DemeterDrawable.cpp -MT DemeterDrawable.lo -MD -MP -MF
.deps/DemeterDrawable.TPlo  -fPIC -DPIC -o .libs/DemeterDrawable.lo
In file included from DemeterDrawable.cpp:21:
*../../include/Demeter/DemeterDrawable.h:80: error: conflicting return type
specified for 'virtual bool Demeter::DemeterDrawable::computeBound() const'*
/usr/include/osg/Drawable:212: error:   overriding 'virtual osg::BoundingBox
osg::Drawable::computeBound() const'
DemeterDrawable.cpp: In member function 'virtual osg::Object*
Demeter::DemeterDrawable::cloneType() const':
DemeterDrawable.cpp:57: error: cannot allocate an object of abstract type
'Demeter::DemeterDrawable'
../../include/Demeter/DemeterDrawable.h:50: note:   because the following
virtual functions are pure within 'Demeter::DemeterDrawable':
/usr/include/osg/Drawable:428: note:     virtual void
osg::Drawable::drawImplementation(osg::RenderInfo&) const
DemeterDrawable.cpp: In member function 'virtual osg::Object*
Demeter::DemeterDrawable::clone(const osg::CopyOp&) const':
DemeterDrawable.cpp:63: error: cannot allocate an object of abstract type
'Demeter::DemeterDrawable'
../../include/Demeter/DemeterDrawable.h:50: note:   since type
'Demeter::DemeterDrawable' has pure virtual functions
DemeterDrawable.cpp: In member function 'virtual bool
Demeter::DemeterDrawable::computeBound() const':
DemeterDrawable.cpp:120: error: '_bbox' was not declared in this scope
DemeterDrawable.cpp:124: error: '_bbox_computed' was not declared in this
scope
DemeterDrawable.cpp:128: error: '_bbox' was not declared in this scope
make[2]: *** [DemeterDrawable.lo] Error 1
make[2]: Leaving directory `/home/gmilitel/Projects/demeter-3.21/src/osg'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/gmilitel/Projects/demeter-3.21/src'
make: *** [all-recursive] Error 1

Is there any help available?

Thanks and regards.

Guido Militello

"There's a reason why you separate military and the police.
One fights the enemy of the state. The other serves and protects the people.
When the military becomes both...then the enemies of the state tend to
become the people."

[Demeter-main] building demeter-4.0 in visual studio 2005

[Christian S. <chr...@un...>]

Hi everybody at the mailing list,
i need your help in compiling demeter-4.0 for windows with visual studio 
2005, beside that i also want to ask a few questions concering demeter.

Okay lets start: Before i tried compiling demeter i succesfully 
installed "openscenegraph 2.0" with its "3rdParty_Win32binaries" on my 
windows xp system with visual studio 2005. Via a link on the 
openscenegraph website i came to the demeter site, which has exact the 
functionalities i would need for a future project of mine (OpenGL 3D 
visualization of geodata with the help of GDAL)

My first attempt in compiling demeter-4.0 was to download 
"Demeter.4.0.tar.bz2", extract it and start the 
"demeter.4.0\VisualStudio\Demeter.sln" VS solution file. VS converted it 
to a VS 2005 solution, then i hit "Build Solution". The result were 24 
errors with this two types of errors:
///
Error 1 fatal error C1083: Cannot open include file: 'GL/glew.h': No 
such file or directory c:\demeter.4.0\include\demeter\globals.h 84
...
Error 21 fatal error C1083: Cannot open include file: 'GL/glew.h': No 
such file or directory c:\demeter.4.0\include\demeter\demeterdrawable.h 26
...
///

I am a coding noob, but as far as i could understand was a header named 
"glew.h" not on its place. I googled around, found the GLEW OpenGL 
library, downloaded it and added the following files to my 
"c:\demeter.4.0" directory.
///
demeter.4.0\include\GL\glew.h
demeter.4.0\include\GL\wglew.h

demeter.4.0\lib\glew32.lib (I had to create a lib directory, because non 
was existing, i hope this was no mistake?)
demeter.4.0\lib\glew32s.lib
///

After "Clean solution" i ran "Build Solution" agein. > Folling error 
output ;-(
///
Error 12 fatal error C1083: Cannot open include file: 'SDL/SDL.h': No 
such file or directory 
c:\demeter.4.0\samples\samplerawapplication\samplerawmain.cpp 34
Error 40 fatal error C1083: Cannot open include file: 'SDL_image.h': No 
such file or directory c:\demeter.4.0\src\sdltextureloader.cpp 14
Error 44 fatal error C1083: Cannot open include file: 'gdal_priv.h': No 
such file or directory c:\demeter.4.0\src\gdalelevationloader.cpp 11
Error 45 fatal error C1083: Cannot open include file: 'osg/BoundingBox': 
No such file or directory 
c:\demeter.4.0\include\demeter\demeterdrawable.h 27
Error 46 fatal error C1033: cannot open program database 
'c:\demeter.4.0\visualstudio\debug\vc80.pdb' c:\demeter.4.0\src\brush.cpp 1
Error 47 fatal error C1083: Cannot open include file: 'osg/Geometry': No 
such file or directory 
c:\demeter.4.0\samples\sampleosgapplication\sampleosgmain.cpp 35
Error 48 fatal error C1083: Cannot open include file: 'osg/Geode': No 
such file or directory 
c:\demeter.4.0\samples\sampleosgapplication\hovercamera.h 6
///

Okay, now was the first OSG related files missing beside some SDL and 
GDAL ones. This led me to the assumption that Demeter does not use the 
OpenSceneGraph library-like but includes OSS's source code into it's own 
soure code. (Is this right?) So i added the content of my OpenSceneGraph 
2.0's include and src directory to the demeter's include and src directory.
///
demeter.4.0\include\OpenThreads
demeter.4.0\include\osg
...
demeter.4.0\src\OpenThreads
demeter.4.0\src\osg

Downloaded "SDL_image-devel-1.2.5-VC6.zip", "SDL-devel-1.2.11-VC6.zip" 
and added the following:
demeter.4.0\include\SDL\SDL.h
demeter.4.0\include\SDL\SDL_active.h
demeter.4.0\include\SDL\...

the same files also in
demeter.4.0\include\SDL.h
demeter.4.0\include\SDL_active.h
demeter.4.0\include\...
again (because without that i would get a missing SDL.h again - maybe 
because auf SDL_image?)

demeter.4.0\include\SDL_image.h

demeter.4.0\lib\SDL.lib
demeter.4.0\lib\SDL_image.lib
demeter.4.0\lib\SDLmain.lib

and finally the GDAL stuff from "3rdParty_Win32binaries" to demeter:
demeter.4.0\include\gdal.h
demeter.4.0\include\gdal_alg.h
demeter.4.0\include\...
demeter.4.0\include\cpl_config.h (without that the complier would 
complain for gdal?)
demeter.4.0\include\cpl_conv.h

demeter.4.0\lib\gdal_i.lib
demeter.4.0\lib\gdal_iD.lib
///

clean && build > Following output:
///
Error 12 fatal error C1083: Cannot open include file: 'strings.h': No 
such file or directory c:\demeter.4.0\include\sdl\sdl_stdinc.h 61
Error 40 fatal error C1083: Cannot open include file: 'strings.h': No 
such file or directory c:\demeter.4.0\include\sdl_stdinc.h 61
Error 45 error C2259: 'Demeter::DemeterDrawable' : cannot instantiate 
abstract class c:\demeter.4.0\src\demeterdrawable.cpp 78
Error 46 error C2259: 'Demeter::DemeterDrawable' : cannot instantiate 
abstract class c:\demeter.4.0\src\demeterdrawable.cpp 84
Error 47 fatal error C1083: Cannot open include file: 'strings.h': No 
such file or directory c:\demeter.4.0\include\sdl\sdl_stdinc.h 61
///

THAT IS MY PROBLEM! I hope some of you can help me!


Thanks a lot in advance
Christian Sam

[Demeter-main] Free encrypted shape file viewer

[Ashraf T. <af...@ya...>]

Hello

i have an encrypted shape file viewer. for more
information, contact me on msn messenger.
af...@ho...

regards,
ashraf


 
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Re: [Demeter-main] demeter 4 excessive texture creation on mac os x

[Padraic M. <pad...@ho...>]

My second problem related to the change in the Terrain() constructor.  The 
removal of the maxNumTriangles parameter meant I was specifying the optional 
offsetX when I did not intent to and my terrain was rendered 60000 points 
from where I expected it.  This would be a helpful item to add to any 
release notes.

The texture creation problem only occurs when none of the terrain is visible 
on screen.  It calls CreateTexture each cycle, but also unloads the texture 
each cycle.

I changed line 1801 of Terrain.cpp to make texturing only happen if 
rendering will actually be done (see below).  I still get a hiccup when the 
terrain comes back into view but not the stalled app I got before.  I ended 
up just turning off dynamic textures.

cheers, pj



if (pCell->m_NumTriangleVertices > 0 || pCell->m_NumFanVertices > 0)
{
	if (pCell->m_pTexture)
	{
		glActiveTextureARB(GL_TEXTURE1_ARB);
		glMatrixMode(GL_TEXTURE);
		glLoadIdentity();
		glScalef(Settings::GetInstance()->GetDetailTextureRepeats(),Settings::GetInstance()->GetDetailTextureRepeats(),0.0f);
		glMatrixMode(GL_MODELVIEW);
		if (m_pCommonTexture)
		{
			glEnable(GL_TEXTURE_2D);
			glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
			if (Settings::GetInstance()->IsBaseTextureEnabled())
			{
				GLuint cTexId = m_pCommonTexture->UploadTexture();
				glBindTexture(GL_TEXTURE_2D, cTexId);
			}
		}
		else
		{
			glDisable(GL_TEXTURE_2D);
		}
		if (m_pShadowMapTexture)
		{
			glActiveTextureARB(GL_TEXTURE2_ARB);
			glEnable(GL_TEXTURE_2D);
			glBindTexture(GL_TEXTURE_2D, m_pShadowMapTexture->UploadTexture());
			glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
			glMatrixMode(GL_TEXTURE);
			glLoadIdentity();
			glTranslatef(ShadowTexOffsetU,ShadowTexOffsetV,0.0f);
			glMatrixMode(GL_MODELVIEW);
		}
		glActiveTextureARB(GL_TEXTURE0_ARB);
		glEnable(GL_TEXTURE_2D);
		if (m_UseNormals || m_pShadowMapTexture)
			glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
		else
			glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
		if (Settings::GetInstance()->IsBaseTextureEnabled())
		{
			GLuint texId;
			texId = pCell->BindTexture();
			glBindTexture(GL_TEXTURE_2D, texId);
		}
	}

	anyRendered = true;
	pCell->Render();

	if (0 < pCell->GetNumberOfDetails())
	{
		// Second and subsequent passes - multitexture of masks and details
		if (m_ControlsZBuffer)
		{
			glDepthMask(GL_FALSE);
			glDepthFunc(GL_EQUAL);
		}
		glEnable(GL_BLEND);
		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
		glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
		for (int k = 0; k < pCell->GetNumberOfDetails(); k++)
		{
			if (pCell->GetDetail(k)->HasNonZeroValues())
			{
				//glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
				glActiveTextureARB(GL_TEXTURE0_ARB);
				glBindTexture(GL_TEXTURE_2D, pCell->BindMask(k));
				glActiveTextureARB(GL_TEXTURE1_ARB);
				glEnable(GL_TEXTURE_2D);
				glBindTexture(GL_TEXTURE_2D, pCell->BindDetail(k));
				pCell->Render();
			}
		}
		if (m_ControlsZBuffer)
		{
			glDepthMask(GL_TRUE);
			glDepthFunc(GL_LESS);
		}
		glDisable(GL_BLEND);
	}

}





>Date: Thu, 20 Jul 2006 10:57:35 +0200
>From: "Padraic McGee" <pad...@ho...>
>Subject: [Demeter-main] demeter 4 excessive texture creation on mac os
>	x
>To: dem...@li...
>Message-ID: <BAY...@ph...>
>Content-Type: text/plain; format=flowed
>
>I upgraded to Demeter 4.0 and have noticed a few problems.  My app now
>spends 95% of the time in the CreateTexture() method.  It looks like it's
>creating opengl texures every rendering which I wouldn't expect to be a 
>good
>thing.
>
>Shark trace:
>	95.3%	95.3%	libDemeter.dylib	CreateTexture(unsigned char const*, int, int,
>int, int, long, bool, int, bool)
>	0.0%	95.3%	libDemeter.dylib	Demeter::Texture::UploadTexture(bool)	0.0%	95.3%	libDemeter.dylib	Demeter::TextureCell::BindTexture()
>	0.0%	95.3%	libDemeter.dylib	Demeter::Terrain::Render()
>There seem to be other problems as well, since the terrain is no longer
>drawn in the same location but I haven't been able to investigate these
>much.  I had to hack the scon files a bit to get a working dylib so I may
>have introduced some problems there.
>
>Mac OS X 10.4.7
>Dual G5

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[Demeter-main] demeter 4 excessive texture creation on mac os x

[Padraic M. <pad...@ho...>]

I upgraded to Demeter 4.0 and have noticed a few problems.  My app now 
spends 95% of the time in the CreateTexture() method.  It looks like it's 
creating opengl texures every rendering which I wouldn't expect to be a good 
thing.

Shark trace:
	95.3%	95.3%	libDemeter.dylib	CreateTexture(unsigned char const*, int, int, 
int, int, long, bool, int, bool)
	0.0%	95.3%	libDemeter.dylib	Demeter::Texture::UploadTexture(bool)	0.0%	95.3%	libDemeter.dylib	Demeter::TextureCell::BindTexture()
	0.0%	95.3%	libDemeter.dylib	Demeter::Terrain::Render()
There seem to be other problems as well, since the terrain is no longer 
drawn in the same location but I haven't been able to investigate these 
much.  I had to hack the scon files a bit to get a working dylib so I may 
have introduced some problems there.

Mac OS X 10.4.7
Dual G5

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Re: [Demeter-main] Building Demeter

[Tim B. <tbo...@fl...>]

Thanks Clay.

I cant seem to find the configure script in the package I downloaded, is 
there an alternate download for *nix somewhere that i'm missing?

Thanks again,

-t

Clay Fowler wrote:

> Hi, Tim. Try:
>
> http://tbgsoftware.com
>
> instead. Sorry for the confusion.
>
> On Apr 15, 2006, at 12:20 PM, Tim Bothwell wrote:
>
>> Hi,
>>
>> I just downloaded the sample data and the source files for Demeter.  
>> I'm having trouble finding anything on http://www.terrainengine.com  
>> and was wondering if somebody pass along another url or some  
>> documentation.
>>
>> Thanks,
>>
>> -T
>>
>>
>>
>> -------------------------------------------------------
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>> _______________________________________________
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>> Dem...@li...
>> https://lists.sourceforge.net/lists/listinfo/demeter-main
>
>
>

[Demeter-main] Building Demeter

[Tim B. <tbo...@fl...>]

Hi,

I just downloaded the sample data and the source files for Demeter. I'm 
having trouble finding anything on http://www.terrainengine.com and was 
wondering if somebody pass along another url or some documentation.

Thanks,

-T

Re: [Demeter-main] updating terrains / textures in real-time

[Clay F. <cf...@tb...>]

It will be posted on Sourceforge very soon.

On Mar 7, 2006, at 4:04 AM, Stanislav Blinov wrote:

>> Demeter's good at changing things on the fly. You can modify terrain
>> vertices at any time (as long as you make corresponding calls to
>> Terrain::RecalcGeometry after changing them. You can modify the
>> texture by splatting detail textures wherever/whenever they're
>> needed. Alternatively, you could use a shader to render the terrain's
>> surface instead of fixed textures (which is much easier now with the
>> 4.0 release).
>
>
> Can you please tell me where I can obtain 4.0 release?
>
> Regards.
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by xPML, a groundbreaking scripting =20
> language
> that extends applications into web and mobile media. Attend the =20
> live webcast
> and join the prime developer group breaking into this new coding =20
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> Dem...@li...
> https://lists.sourceforge.net/lists/listinfo/demeter-main

Re: [Demeter-main] updating terrains / textures in real-time

[Stanislav B. <bli...@gm...>]

> Demeter's good at changing things on the fly. You can modify terrain
> vertices at any time (as long as you make corresponding calls to
> Terrain::RecalcGeometry after changing them. You can modify the
> texture by splatting detail textures wherever/whenever they're
> needed. Alternatively, you could use a shader to render the terrain's
> surface instead of fixed textures (which is much easier now with the
> 4.0 release).


Can you please tell me where I can obtain 4.0 release?

Regards.

Re: [Demeter-main] change elevation

[Clay F. <cf...@tb...>]

Hi, Luiz. You probably need to call RecalcGeometry() after making  
your changes.

On Jan 20, 2006, at 11:31 AM, Luiz Gonzaga da Silveira Jr wrote:

> Hi,
>
> I want to change elevations of a region in a terrain.
> The terrain has been loaded with texture. After,
> I define a subregion (quads) of the terrain where all
> elevations must have same value.
>
> First a tried using SetAllElevations. No success!
>
> I made some tests to chage elevation of point
> using  SetVertexElevation. No changes appeared!
>
> I have used texture for terrain...
>
> thanks for any help.
>
> -- 
> Luiz Gonzaga da Silveira Jr
> Researcher
> CROMOS - Unisinos

Re: [Demeter-main] updating terrains / textures in real-time

[Clay F. <cf...@tb...>]

Demeter's good at changing things on the fly. You can modify terrain  
vertices at any time (as long as you make corresponding calls to  
Terrain::RecalcGeometry after changing them. You can modify the  
texture by splatting detail textures wherever/whenever they're  
needed. Alternatively, you could use a shader to render the terrain's  
surface instead of fixed textures (which is much easier now with the  
4.0 release).

I don't think it has anything to with loaders, per se, though.

On Jan 27, 2006, at 11:08 PM, Brian Russo wrote:

> Hi,
>
> How feasible (code-wise) is it to write a terrain/texture loader  
> that can handle growth/modification of terrains and textures in  
> real-time?
>
> I've been looking around at the various open source terrain engines  
> and can't find this feature. Appreciate any input or suggestions  
> from anyone here.
>
> thanks,
> - bri
>
> -- 
> Brian Russo <br...@en...>
> (808) 271 4166
>
>
>
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[Demeter-main] updating terrains / textures in real-time

[Brian R. <br...@en...>]

Hi,

How feasible (code-wise) is it to write a terrain/texture loader that 
can handle growth/modification of terrains and textures in real-time?

I've been looking around at the various open source terrain engines and 
can't find this feature. Appreciate any input or suggestions from anyone 
here.

thanks,
 - bri

-- 
Brian Russo <br...@en...>
(808) 271 4166

[Demeter-main] change elevation

[Luiz G. da S. Jr <lgo...@gm...>]

 Hi,

I want to change elevations of a region in a terrain.
The terrain has been loaded with texture. After,
I define a subregion (quads) of the terrain where all
elevations must have same value.

First a tried using SetAllElevations. No success!

I made some tests to chage elevation of point
using  SetVertexElevation. No changes appeared!

I have used texture for terrain...

thanks for any help.

--
Luiz Gonzaga da Silveira Jr
Researcher
CROMOS - Unisinos

[Demeter-main] demeter editor new terrain

[vm.games <co...@vm...>]

Hi,

i just joined the mailing list and i try the demetor editor beta,

but i can't load a new terrain 

i get the error 

"invalid parameters specified for new terrain"

here are my settings :

Elevation filename : LlanoElev.png
Vertex spacing 20.0
 Elevation scale  3.0
 Texture filename :      LlanoTex.jpg


i just try to load the gdal exemple files but i cant get it to work ...

what s wrong with this?

thanks

nico
vm-games.com



= = = = = = = = = = = = = = = = = = = = 
  
vm.games
co...@vm...
20/12/2005 

[Demeter-main] demeter editor new terrain

[vm.games <co...@vm...>]

Hi,

i just joined the mailing list and i try the demetor editor beta,

but i can't load a new terrain 

i get the error 

"invalid parameters specified for new terrain"

here are my settings :

Elevation filename : LlanoElev.png
Vertex spacing 20.0
 Elevation scale  3.0
 Texture filename :      LlanoTex.jpg


i just try to load the gdal exemple files but i cant get it to work ...

what s wrong with this?

thanks

nico
vm-games.com

Re: [Demeter-main] opengl usage in demeter

[<sma...@re...>]

Hello,

  I haven't tried myself (I use OSG!), but I don't see why you wouldn't be
able to draw OpenGL shapes directly. Since you need an OpenGL context to
use Demeter, any OpenGL command will be sent to the same context.

  Just draw your cube using basic OpenGL commands, or the GLU.

  Good luck,

    Fred


> Hi all,
>
> I just wanted to know that whether I can draw primitive shapes by just
> using
> opengl's function calls.
>
> I prefer this way rather using osg, so if there is a way, can you briefly
> explain?
>
> For example I want to write a class named "Cube" that has position
> information, and I want to see that cube over the terrain at the position
> that I gave.
>
> Thanks in advance
>

[Demeter-main] opengl usage in demeter

[Rifat A. <rif...@gm...>]

Hi all,

I just wanted to know that whether I can draw primitive shapes by just usin=
g
opengl's function calls.

I prefer this way rather using osg, so if there is a way, can you briefly
explain?

For example I want to write a class named "Cube" that has position
information, and I want to see that cube over the terrain at the position
that I gave.

Thanks in advance

[Demeter-main] [FEEDBACK]

[Admin K. <ki...@ha...>]

Is this project alive anymore?

Re: [Demeter-main] OSG 0.9.9 with Demeter 3.21

[small_duck <sma...@re...>]

Actually, I answer to myself :)

    I could finally build the library and the sample, by modifying the 
DemeterDrawable::computeBound() so that it returns a bouding box instead 
of modifying the non-existing data member. I also had to comment the 
"pView->setBackgroundColor(bkgColor);" in SampleOSGMain, I don't know 
how I should replace it.

    The sample runs fine, although I see white cubes in place of trees, 
but I suppose it may come from some resources I did not set properly.

    Fred



small_duck wrote:

> Hello!
>
>    I have problems compiling the OSG sample for Demeter (VC++ 2003). 
> I'm using OSG 0.9.9 and Demeter 3.21.
>
>    I get a bunch of error messages that looks like the versions would 
> not be compatible.
>
> e:\Others\demeter-3.21\include\Demeter\DemeterDrawable.h(82) : error 
> C2555: 'Demeter::DemeterDrawable::computeBound': overriding virtual 
> function return type differs and is not covariant from 
> 'osg::Drawable::computeBound'
>        e:\include\osg\Drawable(184) : see declaration of 
> 'osg::Drawable::computeBound'
> e:\Others\demeter-3.21\src\osg\DemeterDrawable.cpp(120) : error C2065: 
> '_bbox' : undeclared identifier
> e:\Others\demeter-3.21\src\osg\DemeterDrawable.cpp(120) : error C2228: 
> left of '._min' must have class/struct/union type
>        type is ''unknown-type''
> e:\Others\demeter-3.21\src\osg\DemeterDrawable.cpp(120) : error C2228: 
> left of '.x' must have class/struct/union type
> e:\Others\demeter-3.21\src\osg\DemeterDrawable.cpp(120) : error C2228: 
> left of '._min' must have class/struct/union type
>        type is ''unknown-type''
> ...
>
>    Is there a fix for this? Or should I use another version of Demeter 
> or OSG?
>
>    Thanks,
>
>       Fred
>
>
>
> -------------------------------------------------------
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>
>

[Demeter-main] OSG 0.9.9 with Demeter 3.21

[small_duck <sma...@re...>]

Hello!

    I have problems compiling the OSG sample for Demeter (VC++ 2003). 
I'm using OSG 0.9.9 and Demeter 3.21.

    I get a bunch of error messages that looks like the versions would 
not be compatible.

e:\Others\demeter-3.21\include\Demeter\DemeterDrawable.h(82) : error 
C2555: 'Demeter::DemeterDrawable::computeBound': overriding virtual 
function return type differs and is not covariant from 
'osg::Drawable::computeBound'
        e:\include\osg\Drawable(184) : see declaration of 
'osg::Drawable::computeBound'
e:\Others\demeter-3.21\src\osg\DemeterDrawable.cpp(120) : error C2065: 
'_bbox' : undeclared identifier
e:\Others\demeter-3.21\src\osg\DemeterDrawable.cpp(120) : error C2228: 
left of '._min' must have class/struct/union type
        type is ''unknown-type''
e:\Others\demeter-3.21\src\osg\DemeterDrawable.cpp(120) : error C2228: 
left of '.x' must have class/struct/union type
e:\Others\demeter-3.21\src\osg\DemeterDrawable.cpp(120) : error C2228: 
left of '._min' must have class/struct/union type
        type is ''unknown-type''
...

    Is there a fix for this? Or should I use another version of Demeter 
or OSG?

    Thanks,

       Fred

[Demeter-main] Stereo visualization and the Demeter

[Wei d. <den...@ya...>]

Hi 
 
I need to write a VR program using Demeter. Does anyone know how to combine the Demeter with VRjuggler or Cavelib? Any comment are appreciated. 
 
Thanks
 
Wei

		
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Re: [Demeter-main] Terrain.cpp:112: error: `glLockArraysEXT' undeclared

[Stephan H. <st...@ei...>]

Flávio César wrote:

>After installing all dependecies apps, I can't compile demeter... 
> 
>I know that Alan Gifford <agifford@ho...> have had the same problem..... but 
>no answer can be found on the list... 
> 
>OpenGL an OSG examples work just fine... 
> 
>Can anyone help me? 
> 
>This is th error... 
> 
>g++ -DHAVE_CONFIG_H -I. -I. -I../include/Demeter -I../include -g -O2 -c 
>Terrain.cpp -MT Terrain.lo -MD -MP -MF .deps/Terrain.TPlo  -fPIC -DPIC 
>-o .libs/Terrain.lo 
>Terrain.cpp: In function `void LoadGLExtensions()': 
>Terrain.cpp:112: error: `glLockArraysEXT' undeclared (first use this 
>function) 
>Terrain.cpp:112: error: (Each undeclared identifier is reported only once for 
>each function it appears in.) 
>Terrain.cpp:113: error: `glUnlockArraysEXT' undeclared (first use this 
>function) 
>make[2]: ** [Terrain.lo] Erro 1 
> 
>  
>
Hi,

change that to
glLockArrays, glUnlockArrays  (remove the EXT)

this extension is no extension anymore, it was promoted to the core ages 
ago. So your driver might not support the extension-ed version anymore.

regards,
stephan

[Demeter-main] Terrain.cpp:112: error: `glLockArraysEXT' undeclared

[<fc...@li...>]

After installing all dependecies apps, I can't compile demeter... 
 
I know that Alan Gifford <agifford@ho...> have had the same problem..... but 
no answer can be found on the list... 
 
OpenGL an OSG examples work just fine... 
 
Can anyone help me? 
 
This is th error... 
 
g++ -DHAVE_CONFIG_H -I. -I. -I../include/Demeter -I../include -g -O2 -c 
Terrain.cpp -MT Terrain.lo -MD -MP -MF .deps/Terrain.TPlo  -fPIC -DPIC 
-o .libs/Terrain.lo 
Terrain.cpp: In function `void LoadGLExtensions()': 
Terrain.cpp:112: error: `glLockArraysEXT' undeclared (first use this 
function) 
Terrain.cpp:112: error: (Each undeclared identifier is reported only once for 
each function it appears in.) 
Terrain.cpp:113: error: `glUnlockArraysEXT' undeclared (first use this 
function) 
make[2]: ** [Terrain.lo] Erro 1 
 
-- 
Webmail LinkExpress (http://www.icanal.com.br) 
 

Re: [Demeter-main] Tutorials for OSG?

[Stanislav B. <ke...@pe...>]

I think DemeterOSG sample is simple enough.


>Are there any tutorials for getting OSG and Demeter to work together, or=
 =3D
>should we base it off the OSG apps that come with Demeter?