Updates NEWS file for 0.9.0 release.

Added default computeBound() implementation to osg::Drawable which uses
a PrimtiveFunctor to compute the bounding box in a generic way, that
will work for all Drawable subclasses that implement the accept(PrimitiveFunctor&).

NEWS

@@ -4,37 +4,70 @@ OSG News (most significant items from ChangeLog)
 
 July 2002 - OpenSceneGraph-0.9.0.tar.gz
 
-    osgcluster - ported to windows.
+    >>> OpenSceneGraph goes beta - Multitexturing, Occlusion Culling, Particles and much more added!
 
-    Multitexturing support added to osg::StateSet, osg::Geometry, osg::State
+    This release marks the beginning of the beta phase of the OpenSceneGraph
+    development, which means that all the major core features are now
+    in the scene graph, and 1.0 is not far away.  Its performance, features 
+    and portability already compares very favorably to other scene graphs, 
+    both comerical and open source.  
+
+    Multi-texturing support added to osg::StateSet, osg::Geometry, osg::State
     and txp loader.
     
-    Geometry classes which superseeds the old Performer sytle osg::GeoSet.
+    New osg::Geometry classes which supersedes the old Performer style osg::GeoSet,
+    support multi-texturing, and uses sharable osg::Arrays which use
+    std::vector<> for data storage and manipulation.
 
-    Occlusion culling adding to the core OSG.
+    Shadow volume occlusion culling adding to the core OSG, developed as a
+    collobaration between Mike Connell and Robert Osfield. Our implementation
+    uses convex planer occluders, with support for holes to allow larger
+    and more effective occluders to be used. The approach is software 
+    based so it 100% portable, and by culling during the cull traversal 
+    both CPU and GPU loads are significantly reduced, making it an extremely 
+    powerful feature for large scale urban and indoor visulisation. 
 
     osgParticle developed by Marco Jez adds support for a range of particle
     effects.
-
-    osgSim a seperate add-on library adds support for navigational light points.
     
-    osgGA (Gui Abstraction) library introduced to provide classes for adatping
+    osgGA (Gui Abstraction) library written by Neil Salter adds classes for 
-    different GUI toolkits to work with a standard set of manipulators for
+    adapting different GUI toolkits to work with a standard set of manipulators for
     modifying the scene, such as camera and state manipulators.
     
-    Support for NodeKits.
+    Support has been added to the plugin architecture to facilitate the
+    development of NodeKits - add on libraries which can used directly
+    in your code, or loaded indirectly when loading from file.  The 
+    later allows you to load a .osg file with text or particle effects
+    in them,the plugin architecture automatically loads the required 
+    library which supports these features.
 
-    New demos:
+    A range of new demos have been as code examples, and to demonstrate
+    the range of features that OpenSceneGraph delivers:
+
+        osgoccluder  - demonstrates ocllusion culling, and has a mode
+                       which allows the users to interactively create
+                       their own convex planer occluders.
+        osghud       - how to mix head up display with 3d views.
+        osgparticle  - shows the new osgParticle node kit in action.                
+        osgprerender - pre renders and scene then textures the result onto
+                       an animated flag.
+        osgcallback  - examples of the full range of callbacks that you
+                       can use to add dynamic behaviors to your scene graph.
+        osglight     - a simple example of how to set up spot and position
+                       lights in the scene.
+        osgclip      - illustrates how to add clip planes to you scene.
+        osggeometry  - examples of the different ways to set up primitives
+                       and vertex/color/normal and texture attributes in
+                       the new osg::Geometry class.
+        osgmultitexture - a simple example which adds a spherical reflection
+                        map to a whole scene using the second texture unit
+                        if one exists.
+        
+    osg::Drawable::PrimtiveFunctor has also been added to allow querrying 
+    of primitive data with Drawables subclasses without requiring knowledge 
+    of the types of Drawable subclasses that exists.  This decoupling makes
+    it a very powerful and flexible utility.
 
-        osgoccluder
-        osghud
-        osgparticle
-        osgprerender
-        osgcallback
-        osglight
-        osgclip
-        osggeometry
-        osgmultitexture
 
 26th April 2002 - OpenSceneGraph-0.8.45.tar.gz
 

include/osg/BoundingBox

@@ -124,7 +124,31 @@ class SG_EXPORT BoundingBox
 
         /** If the vertex is out-with the box expand to encompass vertex.
             If this box is empty then move set this box's min max to vertex. */
-        void expandBy(const Vec3& v);
+        inline void expandBy(const Vec3& v)
+        {
+            if(v.x()<_min.x()) _min.x() = v.x();
+            if(v.x()>_max.x()) _max.x() = v.x();
+
+            if(v.y()<_min.y()) _min.y() = v.y();
+            if(v.y()>_max.y()) _max.y() = v.y();
+
+            if(v.z()<_min.z()) _min.z() = v.z();
+            if(v.z()>_max.z()) _max.z() = v.z();
+        }
+
+        /** If the vertex is out-with the box expand to encompass vertex.
+            If this box is empty then move set this box's min max to vertex. */
+        inline void expandBy(float x,float y,float z)
+        {
+            if(x<_min.x()) _min.x() = x;
+            if(x>_max.x()) _max.x() = x;
+
+            if(y<_min.y()) _min.y() = y;
+            if(y>_max.y()) _max.y() = y;
+
+            if(x<_min.z()) _min.z() = x;
+            if(x>_max.z()) _max.z() = x;
+        }
 
         /** If incoming box is out-with the box expand to encompass incoming box.
             If this box is empty then move set this box to incoming box. */

include/osg/Drawable

@@ -292,7 +292,7 @@ class SG_EXPORT Drawable : public Object
 
         /** compute the bounding box of the drawable. Method must be 
             implemented by subclasses.*/
-        virtual const bool computeBound() const = 0;
+        virtual const bool computeBound() const;
         
         void addParent(osg::Node* node);
         void removeParent(osg::Node* node);

include/osg/Geometry

@@ -103,7 +103,7 @@ class SG_EXPORT Geometry : public Drawable
 
         virtual ~Geometry();
 
-        virtual const bool computeBound() const;
+        //virtual const bool computeBound() const;
         
         
         

src/osg/BoundingBox.cpp

@@ -3,19 +3,6 @@
 
 using namespace osg;
 
-void BoundingBox::expandBy(const Vec3& v)
-{
-    if(v.x()<_min.x()) _min.x() = v.x();
-    if(v.x()>_max.x()) _max.x() = v.x();
-
-    if(v.y()<_min.y()) _min.y() = v.y();
-    if(v.y()>_max.y()) _max.y() = v.y();
-
-    if(v.z()<_min.z()) _min.z() = v.z();
-    if(v.z()>_max.z()) _max.z() = v.z();
-}
-
-
 void BoundingBox::expandBy(const BoundingBox& bb)
 {
     if (!bb.valid()) return;

src/osg/Drawable.cpp

@@ -227,3 +227,77 @@ void Drawable::setAppCallback(AppCallback* ac)
         }
     }
 }
+
+struct ComputeBound : public Drawable::PrimitiveFunctor
+{
+        ComputeBound():_vertices(0) {}
+        
+        virtual void setVertexArray(unsigned int,Vec3* vertices) { _vertices = vertices; }
+
+        virtual void drawArrays(GLenum,GLint first,GLsizei count)
+        {
+            if (_vertices)
+            {
+                osg::Vec3* vert = _vertices+first;
+                for(;count>0;--count,++vert)
+                {
+                    _bb.expandBy(*vert);
+                }
+            }
+        }
+
+        virtual void drawElements(GLenum,GLsizei count,GLubyte* indices)
+        {
+            if (_vertices)
+            {
+                for(;count>0;--count,++indices)
+                {
+                    _bb.expandBy(_vertices[*indices]);
+                }
+            }
+        }
+
+        virtual void drawElements(GLenum,GLsizei count,GLushort* indices)
+        {
+            if (_vertices)
+            {
+                for(;count>0;--count,++indices)
+                {
+                    _bb.expandBy(_vertices[*indices]);
+                }
+            }
+        }
+
+        virtual void drawElements(GLenum,GLsizei count,GLuint* indices)
+        {
+            if (_vertices)
+            {
+                for(;count>0;--count,++indices)
+                {
+                    _bb.expandBy(_vertices[*indices]);
+                }
+            }
+        }
+
+        virtual void begin(GLenum) {}
+        virtual void vertex(const Vec3& vert) { _bb.expandBy(vert); }
+        virtual void vertex(float x,float y,float z) { _bb.expandBy(x,y,z); }
+        virtual void end() {}
+        
+        Vec3*           _vertices;
+        BoundingBox     _bb;
+};
+
+const bool Drawable::computeBound() const
+{
+    ComputeBound cb;
+
+    Drawable* non_const_this = const_cast<Drawable*>(this);
+    non_const_this->accept(cb);
+    
+    _bbox = cb._bb;
+    _bbox_computed = true;
+
+    return true;
+}
+

src/osg/GeoSet.cpp

@@ -416,6 +416,7 @@ void GeoSet::computeNumVerts() const
 }
 
 
+// just use the base Drawable's PrimitiveFunctor based implementation.
 const bool GeoSet::computeBound() const
 {
     _bbox.init();

src/osg/Geometry.cpp

@@ -222,25 +222,25 @@ void Geometry::accept(PrimitiveFunctor& functor)
     
 }
 
-
+// just use the base Drawable's PrimitiveFunctor based implementation.
-const bool Geometry::computeBound() const
+// const bool Geometry::computeBound() const
-{
+// {
-    _bbox.init();
+//     _bbox.init();
-    
+//     
-    const Vec3Array* coords = dynamic_cast<const Vec3Array*>(_vertexArray.get());
+//     const Vec3Array* coords = dynamic_cast<const Vec3Array*>(_vertexArray.get());
-    if (coords)
+//     if (coords)
-    {
+//     {
-        for(Vec3Array::const_iterator itr=coords->begin();
+//         for(Vec3Array::const_iterator itr=coords->begin();
-            itr!=coords->end();
+//             itr!=coords->end();
-            ++itr)
+//             ++itr)
-        {
+//         {
-            _bbox.expandBy(*itr);
+//             _bbox.expandBy(*itr);
-        }
+//         }
-    }
+//     }
-    _bbox_computed = true;
+//     _bbox_computed = true;
-    
+//     
-    return _bbox.valid();
+//     return _bbox.valid();
-}
+// }
 
 bool Geometry::verifyBindings() const
 {

src/osgPlugins/flt/GeoSetBuilder.cpp

@@ -14,7 +14,6 @@
 #include <osg/LOD>
 #include <osg/Transparency>
 #include <osg/Geode>
-#include <osg/GeoSet>
 #include <osg/StateSet>
 #include <osg/Material>
 #include <osg/Texture>