Changeset 10877 for OpenSceneGraph/trunk/src/osgAnimation/RigGeometry.cpp

Timestamp:

12/09/09 19:45:46 (3 years ago)

Author:

cedricpinson

Message:

From Cedric Pinson,
Add check in RigTransformSoftware? if bones are null
Indent TimelineAnimationManager?
Add check for NaN in UpdateCallback?.cpp
Fix TimelineAnimationManager? clear target (a refactore of Timeline is require for futur)
Fix Computation of bounding box for RigGeometry?

Files:

• OpenSceneGraph/trunk/src/osgAnimation/RigGeometry.cpp (modified) (3 diffs)

OpenSceneGraph/trunk/src/osgAnimation/RigGeometry.cpp

@@ -20 +20 @@
 using namespace osgAnimation;
 
+// The idea is to compute a bounding box with a factor x of the first step we compute the bounding box
+class RigComputeBoundingBoxCallback : public osg::Drawable::ComputeBoundingBoxCallback
+{
+public:
+    RigComputeBoundingBoxCallback(double factor = 2.0) : _computed(false), _factor(factor) {}
+    void reset() { _computed = false; }
+    virtual osg::BoundingBox computeBound(const osg::Drawable& drawable) const
+    {
+        const osgAnimation::RigGeometry& rig = dynamic_cast<const osgAnimation::RigGeometry&>(drawable);
+
+        // if a valid inital bounding box is set we use it without asking more
+        if (rig.getInitialBound().valid())
+            return rig.getInitialBound();
+
+        if (_computed)
+            return _boundingBox;
+
+        // if the computing of bb is invalid (like no geometry inside)
+        // then dont tag the bounding box as computed
+        osg::BoundingBox bb = rig.computeBound();
+        if (!bb.valid())
+            return bb;
+
+
+        _boundingBox.expandBy(bb);
+        osg::Vec3 center = _boundingBox.center();
+        osg::Vec3 vec = (_boundingBox._max-center)*_factor;
+        _boundingBox.expandBy(center + vec);
+        _boundingBox.expandBy(center - vec);
+        _computed = true;
+//        osg::notify(osg::NOTICE) << "build the bounding box for RigGeometry " << rig.getName() << " " << _boundingBox._min << " " << _boundingBox._max << std::endl;
+        return _boundingBox;
+    }
+protected:
+    mutable bool _computed;
+    double _factor;
+    mutable osg::BoundingBox _boundingBox;
+};
+
 RigGeometry::RigGeometry()
 {
@@ -30 +69 @@
 
     // disable the computation of boundingbox for the rig mesh
-    setComputeBoundingBoxCallback(new ComputeBoundingBoxCallback);
+    setComputeBoundingBoxCallback(new RigComputeBoundingBoxCallback);
 }
 
@@ -43 +82 @@
 
     // disable the computation of boundingbox for the rig mesh
-    setComputeBoundingBoxCallback(new ComputeBoundingBoxCallback);
+    setComputeBoundingBoxCallback(new RigComputeBoundingBoxCallback);
 }