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OSG News (most significant items from ChangeLog) OSG News (most significant items from ChangeLog)
================================================ ================================================
6th August 2003 - OpenSceneGraph-0.9.7 9th August 2004 - OpenSceneGraph-0.9.7
>>> support for and generation of large scale geospatial whole earth databases, support for movies, with examples shadows and volume rendering. >>> support for and generation of large scale geospatial databases,
>>> support for movies and examples of shadows and volume rendering.
The 0.9.7 encompasses many improvements, bug fixes, new examples and significant new functionality, the most notable of which is The 0.9.7 encompasses many improvements, bug fixes, new examples and
a new osgTerrain library for generation of large scale geospatial databases. significant new functionality, the most notable of which is a new
osgTerrain library for generation of large scale geospatial databases.
The new osgTerrain library and associated osgdem utility program allow users to uses moziacs of geospatial imagery and digital elevation maps The new osgTerrain library and associated osgdem utility program
to generate a complete paged database which can be used with standard OSG viewers, and users programs. By utilising GDAL to load the imagery allows users to use moziacs of geospatial imagery and digital elevation
and DEM's a wide range of geospatial formats are supported. maps to generate a complete paged database which can be used with
standard OSG viewers, and users programs. By utilising GDAL to load the
imagery and DEM's a wide range of geospatial formats are supported.
The TerraPage plugin has also been rewritten ontop of the OSG's osg::PagedLOD and osgDB::DatabasePager which provides support for The TerraPage plugin has also been rewritten ontop of the OSG's
tile fallback mechansim to ensure that no holes or cracks appear in the databases being roamed, and to achieve constant frameframe osg::PagedLOD and osgDB::DatabasePager which provides support for the
via load balancing mechansisms with osgDB::DatabasePager. tile fallback mechanism to ensure that no holes or cracks appear in the
databases being roamed, and to achieve constant frame rate via load
balancing mechanisms with osgDB::DatabasePager.
The osgDB::DatabasePager has been further improved to provide more configurable load balancing to allow application developers to The osgDB::DatabasePager has been further improved to provide more
achieve constrant framerates when using paged databases. configurable load balancing which allows application developers to achieve
constant frame rates when using paged databases.
Double Vec & Matrix classes & CoordinateSystemNode/EllipsoidModel class have been introduced to better support browsing of large Double Vec & Matrix classes & CoordinateSystemNode/EllipsoidModel class
scale databases, and to provide a mechansim for tracking the local up orientation when roaming whole earth databases. have been introduced to better support browsing of large scale databases,
and to provide a mechanism for tracking the local up orientation when
roaming whole earth databases.
osgUtil has been enhanced with a improved triangle stipper class (osgUtil::TriStipVisitor), a new simplifier (osgUtil::Simplifer) for osgUtil has been enhanced with:
reducing triangle density of osg::Geometry leaves (utilised by osgTerrain to provide simplication of terrain tiles), improved and - an improved triangle tipper class (osgUtil::TriStipVisitor),
more configurable optimizer (osgUtil::Optimizer), a new utility class for compling and releasing OpenGL objects (osgUtil::GLObjectVisitor) - a new simplifier (osgUtil::Simplifer) for reducing triangle density of
replaces the prevsous and more limited DisplayListVisitor. osg::Geometry leaves (utilised by osgTerrain to provide simplification
of terrain tiles),
- improved and more configurable optimizer (osgUtil::Optimizer),
- a new utility class for compiling and releasing OpenGL objects
(osgUtil::GLObjectVisitor) replaces the previous and more limited
DisplayListVisitor.
All the osgGA::MatrxManipulator's (used for camera manipulator etc) have been revamped with usage of doubles internally, and with All the osgGA::MatrxManipulator's (used for camera manipulator etc) have
tracking of the current CoordinateSystem if one is active, to be better support whole earth databases. All the MatrixManipulator been revamped with usage of doubles internally, and with tracking of the
have been extend to allow the setting of a user defined a home position. Two new manipulators have been introduced current CoordinateSystem if one is active, to be better support whole
osgGA::TerrainManipulator, for roaming whole earth/terrain databases, and osgGA::TrackerManipulator which allows the camera to be earth databases. All the MatrixManipulators have been extend to allow
the setting of a user defined home position. Two new manipulators have
been introduced osgGA::TerrainManipulator, for roaming whole earth/terrain
databases, and osgGA::TrackerManipulator which allows the camera to be
attached to a node in the scene graph. attached to a node in the scene graph.
Movie support under Linux and OSX via libMpeg3 and Quicktime respectively, which extend the new osg::ImageStream base class which Movie support under Linux and OSX via libMpeg3 and Quicktime respectively,
allows application developers access to playing, pausing and rewinding movies. which extend the new osg::ImageStream base class which allows application
developers access to playing, pausing and rewinding movies.
The convertion utility osgconv has been extended to allow compression of textures and mipmap generation during conversion when The conversion utility osgconv has been extended to allow compression of
writing to the native .ive binary format. Texture compression and pre computer mipmaps enable faster loading of databases textures and mipmap generation during conversion when writing to the native
and lower utilization of memory resources. .ive binary format. Texture compression and pre computer mipmaps enable
faster loading of databases and lower utilisation of memory resources.
Examples
osgdem
osgphotoalbum
osgbluemarble
osgtesselate
osgsimulation
osgdepthshadow
osgsimplifier
osgspacewarp
osgdistortion
osgsimple
osgkeyboardmouse
osgsimplepager
osgmovie
osgvolume
Write support added to JPG plugin. Write support added to JPG plugin.
@ -66,11 +65,62 @@ OSG News (most significant items from ChangeLog)
Pseudo loaders .trans, .rot and .scale have been added. Pseudo loaders .trans, .rot and .scale have been added.
Updated LWO, AC3D, BMP, IVE and FLT loaers. Updated LWO, AC3D, BMP, IVE and FLT loaders.
osg::TexGenNode has been added to provide a mechanism for positioning OpenGL's texture coordinate generation planes. osg::TexGenNode has been added to provide a mechanism for positioning
OpenGL's texture coordinate generation planes.
Bug fixes. Fourteen new examples have been added:
osgdem a utility for creating large scale geospatial paged
database
osgphotoalbum an example of how to use PagedLOD to dynamic generate
geometry for paged in imagery
osgbluemarble an example of how to build PagedLOD database for
paging imagery
osgtesselate - an example of how to use osgUtil::Tesselate to
tessellate polygonal boundaries
osgsimulation an example of how to use various features in osgSim.
osgdepthshadow an example of how to implement shadows use depth
shadow textures.
osgsimplifier an example of how to use the new osgUtil::Simplifier.
osgspacewarp an example of how to create a special effect that
depends upon tracking the modelview matrix.
osgdistortion an example of how to use prerendering of a texture to
create a distortion effect.
osgsimple a bare bones example of how to create a simple viewer
using a Windowing toolkit, in this example using
Producer, but is written so the example could easily
be modified to work with other Windowing toolkit.
osgkeyboardmouse adding to keyboard and mouse functionality on the
osgsimple base.
osgsimplepager adding database paging support to the osgsimple
example.
osgmovie an example which creates a quad to render a loaded
movie file with - requires the LibMpeg3 (Linux) or
Quicktime (OSX) plugin to work.
osgvolume an example that reads a stack of 2d images to create
a 3D texture, and creates a scene graph using
standard OSG components (osg::ClipNode,
osg::TexGenNode, osg::Billboard and
osg::TexEnvCombine) to create a per per lit volume.
Wrapping up the complete 0.9.7 release is a wide range of smaller features
enhancement and many bug fixes.
2nd October 2003 - OpenSceneGraph-0.9.6-2 2nd October 2003 - OpenSceneGraph-0.9.6-2