Commit Graph

8 Commits

Author SHA1 Message Date
Robert Osfield
849d2fdc8f From Gino van den Bergen, "I've added a few fixes to the VRML 2.0 plugin:
1) Full DOS paths are now correctly opened by OpenVRML. A URL containing
a DOS path should be "file:///C:data/blah" rather than "file://C:data/blah".

2)  The last primitive defined in "coordIndex" is now added if the
"coordIndex" is not terminated by -1.

3) Smoothed normals are computed if no normal field is provided.
Currently, there is no support for "creaseAngle", so all edges (even the
ones sharper than the creaseAngle) are smoothed. I might add this in the
future if demand rises.

4) If an IndexedFaceSet contains only triangles or quads then the
primitive type is set to TRIANGLES or QUADS, and the primset becomes
DrawArrays rather than DrawArrayLengths.

Question: I noticed that for DrawArrays you can still provide an index
array. Would the rendering be faster if I'd create DrawElements primsets
rather than DrawArrays? Phrased differently, what is the benefit of
using DrawElements over DrawArrays, as there is clearly not a one-to-one
mapping of these concepts to their OpenGL counterparts?

5) Objects are added to the transparent bin and blend mode is enabled
only if the transparency is nonzero. Rendered transparent objects no
longer write the depth buffer."
2008-03-13 16:40:45 +00:00
Robert Osfield
e2ad20a887 From Gino van den Bergen, "I've added the following features to the OSG VRML plugin:
* Support for Box, Sphere, Cone, and Cylinder. These nodes are converted
to osg::Geometry conform the VRML97 spec.
* Backface culling is enabled/disabled according to the "solid" flag for
geometries that are converted from IndexFaceSets.
* PROTO instances can now be used for "appearance" and "geometry" fields
in a Shape node.

The file ReaderWriterVRML2.cpp is adapted for the latest stable public
release:

http://www.openscenegraph.org/svn/osg/OpenSceneGraph/tags/OpenSceneGraph-2.2.0

The changes where needed for being able to read VRML file which are
output by VMD (http://www.ks.uiuc.edu/Research/vmd/). A sample VRML file
is enclosed in this submission.

The plugin has been tested against a number of VRML samples that include
texturing. The texturing is found to be VRML97 compliant for all added
geometry nodes.
"
2007-12-09 16:29:18 +00:00
Robert Osfield
bdb2a6b9d7 From Jean-Sebastien Guay, "After a bit more testing, it was still not 100% robust, so this fix
will bring the change in line with what is done on other OSes (Linux)
and works in all tested cases.

For reference, this was tested with:

osgviewer <file>.wrl                (file in current directory)
osgviewer <dir>\<file>.wrl          (file in child directory, relative)
osgviewer .\<dir>\<file>.wrl        (file in child directory, specify current)
osgviewer <drive>:\<dir>\<file>.wrl (absolute path)
"
2007-08-22 19:31:58 +00:00
Robert Osfield
65ecea4e4a From Jan Ciger, "I am attaching a little hack from Jean-Sebastien Guay which allows
absolute paths to work on Windows."
2007-08-15 15:11:48 +00:00
Robert Osfield
21f65054a0 From Jan Ciger, "I am attaching an improved version of the OpenVRML plugin. It still uses
OpenVRML 0.14.3 and is without the Boost dependency.

The changes:
- - Fixed loading of textures and normals when no corresponding indices
are specified. It uses vertex indices now, compliant with the VRML spec.
- - Added colour per vertex support.
- - Added group node support.
- - Changed the code to use osg::ref_ptr instead of naked pointers to
avoid memory leaks.
- - Fixed breakage for loading files specified by relative path."
2007-08-13 10:27:35 +00:00
Robert Osfield
7099068914 From Jean-Sebastien Guay and Jan Ciger, added search path can improved handling of backslashes/forward slashes 2007-07-07 16:05:05 +00:00
Robert Osfield
9e2fe92ef1 From Rudolf Wiedemann, "I need to link OpenSceneGraph statically to my application, so I
completed the new registration of the plugin-readerwriters
("REGISTER_OSGPLUGIN") according to your osgstaticviewer-example (see
attachment, based on today's svn)."
2007-07-06 13:54:26 +00:00
Robert Osfield
7626169283 From Jan Ciger, Tolga Abaci, Bruno Herbelin : OpenVRML 0.14.3 based .wrl/VRML plugin 2007-01-09 14:35:59 +00:00