FGFS-4.1/OpenSceneGraph
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Added SampleDensityWhenMovingProperty to control LOD property of osgVolume.

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This commit is contained in:
Robert Osfield
2011-03-17 15:37:39 +00:00
parent 79cb22eb06
commit 89eadcfe82
5 changed files with 49 additions and 6 deletions
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23
include/osgVolume/Property
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@@ -35,6 +35,7 @@ class MaximumIntensityProjectionProperty;
class LightingProperty;
class AlphaFuncProperty;
class SampleDensityProperty;
class SampleDensityWhenMovingProperty;
class TransparencyProperty;
class OSGVOLUME_EXPORT PropertyVisitor
@@ -55,6 +56,7 @@ class OSGVOLUME_EXPORT PropertyVisitor
virtual void apply(MaximumIntensityProjectionProperty&) {}
virtual void apply(LightingProperty&) {}
virtual void apply(SampleDensityProperty&) {}
virtual void apply(SampleDensityWhenMovingProperty&) {}
virtual void apply(TransparencyProperty&) {}
bool _traverseOnlyActiveChildren;
@@ -289,6 +291,7 @@ class OSGVOLUME_EXPORT LightingProperty : public Property
};
/** Sample density to use when the volume is static relative to the eye point or when moving if no SampleDensityWhenMovingProperty is assigned.*/
class OSGVOLUME_EXPORT SampleDensityProperty : public ScalarProperty
{
public:
@@ -306,6 +309,24 @@ class OSGVOLUME_EXPORT SampleDensityProperty : public ScalarProperty
virtual ~SampleDensityProperty() {}
};
/** Sample density to use when the volume is moving relative to the eye point.*/
class OSGVOLUME_EXPORT SampleDensityWhenMovingProperty : public ScalarProperty
{
public:
SampleDensityWhenMovingProperty(float value=1.0);
SampleDensityWhenMovingProperty(const SampleDensityWhenMovingProperty& isp,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
META_Object(osgVolume, SampleDensityWhenMovingProperty);
virtual void accept(PropertyVisitor& pv) { pv.apply(*this); }
protected:
virtual ~SampleDensityWhenMovingProperty() {}
};
class OSGVOLUME_EXPORT TransparencyProperty : public ScalarProperty
{
public:
@@ -338,6 +359,7 @@ class OSGVOLUME_EXPORT CollectPropertiesVisitor : public osgVolume::PropertyVisi
virtual void apply(MaximumIntensityProjectionProperty& mip);
virtual void apply(LightingProperty& lp);
virtual void apply(SampleDensityProperty& sdp);
virtual void apply(SampleDensityWhenMovingProperty& sdp);
virtual void apply(TransparencyProperty& tp);
osg::ref_ptr<TransferFunctionProperty> _tfProperty;
@@ -346,6 +368,7 @@ class OSGVOLUME_EXPORT CollectPropertiesVisitor : public osgVolume::PropertyVisi
osg::ref_ptr<MaximumIntensityProjectionProperty> _mipProperty;
osg::ref_ptr<LightingProperty> _lightingProperty;
osg::ref_ptr<SampleDensityProperty> _sampleDensityProperty;
osg::ref_ptr<SampleDensityWhenMovingProperty> _sampleDensityWhenMovingProperty;
osg::ref_ptr<TransparencyProperty> _transparencyProperty;
};

2
include/osgVolume/RayTracedTechnique
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@@ -52,7 +52,7 @@ class OSGVOLUME_EXPORT RayTracedTechnique : public VolumeTechnique
OpenThreads::Mutex _mutex;
ModelViewMatrixMap _modelViewMatrixMap;
osg::ref_ptr<osg::StateSet> _lodStateSet;
osg::ref_ptr<osg::StateSet> _whenMovingStateSet;
};
}