Changeset 10924 for OpenSceneGraph/trunk/include/osg/ImageSequence

Timestamp:

01/07/10 13:14:47 (3 years ago)

Author:

robert

Message:

Refactored the way that osg::Image/ImageSequence manages the update callback that needs to be attached to Textures to make it possible to use the Image::update() mechansim in other subclasses from osg::Image.
To enable the automatic attachment of the required update callback to call osg::Image::update(..) subclasses from osg::Image will
need to implement the osg::Image::requestUpdateCall() and return true, and implement the osg::Image::update(NodeVisitor?*) method to recieve the update call during the update traversal.

Files:

• OpenSceneGraph/trunk/include/osg/ImageSequence (modified) (2 diffs)

OpenSceneGraph/trunk/include/osg/ImageSequence

@@ -17 +17 @@
 #include <OpenThreads/Mutex>
 #include <osg/ImageStream>
-#include <osg/StateAttribute>
 
 #include <list>
@@ -102 +101 @@
         Images& getImages() { return _images; }
         const Images& getImages() const { return _images; }
-        
 
+        /** ImageSequence requires a call to update(NodeVisitor*) during the update traversal so return true.*/
+        virtual bool requiresUpdateCall() const { return true; }
+
+        /** update method for osg::Image subclasses that update themselves during the update traversal.*/
         virtual void update(NodeVisitor* nv);
-
-        struct OSG_EXPORT UpdateCallback : public osg::StateAttributeCallback
-        {
-            virtual void operator () (osg::StateAttribute* attr, osg::NodeVisitor* nv);
-        };
 
     protected: