FGFS-4.1/OpenSceneGraph
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Added event key variables

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This commit is contained in:
Robert Osfield
2009-01-20 15:06:44 +00:00
parent d46e0fcc79
commit fe667cdd2b
1 changed files with 34 additions and 13 deletions
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47
examples/osgvolume/osgvolume.cpp
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@@ -742,20 +742,36 @@ osg::TransferFunction1D* readTransferFunctionFile(const std::string& filename)
}
class FollowMouseCallback : public osgGA::GUIEventHandler, public osg::StateSet::Callback
namespace osgVolume
{
class PropertyAdjustmentCallback : public osgGA::GUIEventHandler, public osg::StateSet::Callback
{
public:
FollowMouseCallback()
PropertyAdjustmentCallback()
{
_transparencyKey = 't';
_alphaFuncKey = 'a';
_sampleDensityKey = 'd';
_updateTransparency = false;
_updateAlphaCutOff = false;
_updateSampleDensity = false;
}
FollowMouseCallback(const FollowMouseCallback&,const osg::CopyOp&) {}
PropertyAdjustmentCallback(const PropertyAdjustmentCallback&,const osg::CopyOp&) {}
META_Object(osg,FollowMouseCallback);
META_Object(osgVolume,PropertyAdjustmentCallback);
void setKeyEventActivatesTransparenyAdjustment(int key) { _transparencyKey = key; }
int getKeyEventActivatesTransparenyAdjustment() const { return _transparencyKey; }
void setKeyEventActivatesSampleDensityAdjustment(int key) { _sampleDensityKey = key; }
int getKeyEventActivatesSampleAdjustment() const { return _sampleDensityKey; }
void setKeyEventActivatesAlphaFuncAdjustment(int key) { _alphaFuncKey = key; }
int getKeyEventActivatesAlphaFuncAdjustment() const { return _alphaFuncKey; }
virtual bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter&, osg::Object* object, osg::NodeVisitor*)
{
@@ -774,6 +790,7 @@ class FollowMouseCallback : public osgGA::GUIEventHandler, public osg::StateSet:
{
float v = (ea.getY()-ea.getYmin())/(ea.getYmax()-ea.getYmin());
float v2 = v*v;
float v4 = v2*v2;
if (_updateAlphaCutOff && cpv._isoProperty.valid())
{
@@ -783,8 +800,8 @@ class FollowMouseCallback : public osgGA::GUIEventHandler, public osg::StateSet:
if (_updateAlphaCutOff && cpv._afProperty.valid())
{
osg::notify(osg::NOTICE)<<"Setting afProperty to "<<v<<std::endl;
cpv._afProperty->setValue(v);
osg::notify(osg::NOTICE)<<"Setting afProperty to "<<v2<<std::endl;
cpv._afProperty->setValue(v2);
}
if (_updateTransparency && cpv._transparencyProperty.valid())
@@ -795,8 +812,8 @@ class FollowMouseCallback : public osgGA::GUIEventHandler, public osg::StateSet:
if (_updateSampleDensity && cpv._sampleDensityProperty.valid())
{
osg::notify(osg::NOTICE)<<"Setting sample density to "<<v2<<std::endl;
cpv._sampleDensityProperty->setValue(v2);
osg::notify(osg::NOTICE)<<"Setting sample density to "<<v4<<std::endl;
cpv._sampleDensityProperty->setValue(v4);
}
}
case(osgGA::GUIEventAdapter::KEYDOWN):
@@ -819,12 +836,16 @@ class FollowMouseCallback : public osgGA::GUIEventHandler, public osg::StateSet:
return false;
}
bool _updateTransparency;
bool _updateAlphaCutOff;
bool _updateSampleDensity;
int _transparencyKey;
int _alphaFuncKey;
int _sampleDensityKey;
bool _updateTransparency;
bool _updateAlphaCutOff;
bool _updateSampleDensity;
};
}
class TestSupportOperation: public osg::GraphicsOperation
{
public:
@@ -1352,7 +1373,7 @@ int main( int argc, char **argv )
tile->setLayer(layer.get());
tile->setEventCallback(new FollowMouseCallback());
tile->setEventCallback(new osgVolume::PropertyAdjustmentCallback());
if (useShader)
{