Added Property::getModifiedCount() + dirty() to help with tracking changes. Added VolumeSettings serializers for Property objects

git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14421 16af8721-9629-0410-8352-f15c8da7e697

include/osgVolume/Property

@@ -82,12 +82,19 @@ class OSGVOLUME_EXPORT Property : public osg::Object
 
         META_Object(osgVolume, Property);
 
+        void dirty() { ++_modifiedCount; }
+
+        void setModifiedCount(unsigned int c) { _modifiedCount = c; }
+        unsigned int getModifiedCount() const { return _modifiedCount; }
+
         virtual void accept(PropertyVisitor& pv) { pv.apply(*this); }
         virtual void traverse(PropertyVisitor& pv) {}
 
     protected:
 
         virtual ~Property();
+
+        unsigned int _modifiedCount;
 };
 
 class OSGVOLUME_EXPORT CompositeProperty : public Property
@@ -123,7 +130,7 @@ class OSGVOLUME_EXPORT CompositeProperty : public Property
 
         const Property* getProperty(unsigned int i) const { return i<_properties.size() ? _properties[i].get() : 0; }
 
-        void addProperty(Property* property) { _properties.push_back(property); }
+        void addProperty(Property* property) { _properties.push_back(property); dirty(); }
 
         void removeProperty(unsigned int i) { _properties.erase(_properties.begin()+i); }
 
@@ -169,7 +176,7 @@ class OSGVOLUME_EXPORT SwitchProperty : public CompositeProperty
 
         /** Set which child property is active.
           * -1 disables all children.*/
-        void setActiveProperty(int i) { _activeProperty = i; }
+        void setActiveProperty(int i) { _activeProperty = i; dirty(); }
 
         /** Get the active property.*/
         int getActiveProperty() const { return _activeProperty; }
@@ -225,7 +232,7 @@ class OSGVOLUME_EXPORT ScalarProperty : public Property
         virtual void accept(PropertyVisitor& pv) { pv.apply(*this); }
 
         /** Set the value.*/
-        virtual void setValue(float v) { _uniform->set(v); }
+        virtual void setValue(float v) { _uniform->set(v); dirty(); }
 
         /** Get the value.*/
         float getValue() const { float v; _uniform->get(v); return v; }

include/osgVolume/VolumeSettings

@@ -33,7 +33,7 @@ class OSGVOLUME_EXPORT VolumeSettings : public Property
         virtual void accept(PropertyVisitor& pv);
         virtual void traverse(PropertyVisitor& pv);
 
-        void setFilename(const std::string& str) { _filename = str; }
+        void setFilename(const std::string& str) { _filename = str; dirty(); }
         const std::string& getFilename() const { return _filename; }
 
         enum Technique
@@ -43,7 +43,7 @@ class OSGVOLUME_EXPORT VolumeSettings : public Property
             MultiPass
         };
 
-        void setTechnique(Technique technique) { _technique = technique; }
+        void setTechnique(Technique technique) { _technique = technique; dirty(); }
         Technique getTechnique() const { return _technique; }
 
         enum ShadingModel
@@ -54,24 +54,28 @@ class OSGVOLUME_EXPORT VolumeSettings : public Property
             MaximumIntensityProjection
         };
 
-        void setShadingModel(ShadingModel sm) { _shadingModel = sm; }
+        void setShadingModel(ShadingModel sm) { _shadingModel = sm; dirty(); }
         ShadingModel getShadingModel() const { return _shadingModel; }
 
-        void setSampleRatio(float sr) { _sampleRatioProperty->setValue(sr); }
+        void setSampleRatio(float sr) { _sampleRatioProperty->setValue(sr); dirty(); }
         float getSampleRatio() const { return _sampleRatioProperty->getValue(); }
-        SampleRatioProperty* getSampleRatioProperty() const { return _sampleRatioProperty.get(); }
+        SampleRatioProperty* getSampleRatioProperty() { return _sampleRatioProperty.get(); }
+        const SampleRatioProperty* getSampleRatioProperty() const { return _sampleRatioProperty.get(); }
 
-        void setSampleRatioWhenMoving(float sr) { _sampleRatioWhenMovingProperty->setValue(sr); }
+        void setSampleRatioWhenMoving(float sr) { _sampleRatioWhenMovingProperty->setValue(sr); dirty(); }
         float getSampleRatioWhenMoving() const { return _sampleRatioWhenMovingProperty->getValue(); }
-        SampleRatioWhenMovingProperty* getSampleRatioWhenMovingProperty() const { return _sampleRatioWhenMovingProperty.get(); }
+        SampleRatioWhenMovingProperty* getSampleRatioWhenMovingProperty() { return _sampleRatioWhenMovingProperty.get(); }
+        const SampleRatioWhenMovingProperty* getSampleRatioWhenMovingProperty() const { return _sampleRatioWhenMovingProperty.get(); }
 
-        void setCutoff(float co) { _cutoffProperty->setValue(co); }
+        void setCutoff(float co) { _cutoffProperty->setValue(co); dirty(); }
         float getCutoff() const { return _cutoffProperty->getValue(); }
-        AlphaFuncProperty* getCutoffProperty() const { return _cutoffProperty.get(); }
+        AlphaFuncProperty* getCutoffProperty() { return _cutoffProperty.get(); }
+        const AlphaFuncProperty* getCutoffProperty() const { return _cutoffProperty.get(); }
 
-        void setTransparency(float t) { _transparencyProperty->setValue(t); }
+        void setTransparency(float t) { _transparencyProperty->setValue(t); dirty(); }
         float getTransparency() const { return _transparencyProperty->getValue(); }
-        TransparencyProperty* getTransparencyProperty() const { return _transparencyProperty.get(); }
+        TransparencyProperty* getTransparencyProperty() { return _transparencyProperty.get(); }
+        const TransparencyProperty* getTransparencyProperty() const { return _transparencyProperty.get(); }
 
     protected: