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geant4/source/graphics_reps/include/G4AttUtils.hh
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2018-12-07 15:15:39 +01:00

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//
// ********************************************************************
// * License and Disclaimer *
// * *
// * The Geant4 software is copyright of the Copyright Holders of *
// * the Geant4 Collaboration. It is provided under the terms and *
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// * technical work of the GEANT4 collaboration. *
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//
//
// Jane Tinslay September 2006
//
// Visualisation attribute utility functions.
//
#ifndef G4ATTUTILS_HH
#define G4ATTUTILS_HH
#include "globals.hh"
#include "G4AttDef.hh"
#include "G4AttValue.hh"
#include "G4String.hh"
#include "G4TypeKey.hh"
#include <map>
#include <vector>
namespace G4AttUtils {
namespace {
// Utility class
template <typename T>
class HasName {
public:
HasName(const G4String& name): fName(name) {};
bool operator()(const T& value) const
{return value.GetName() == fName;}
private:
G4String fName;
};
}
// Extract attribute definition with given name
template <typename T>
G4bool ExtractAttDef(const T& object, const G4String& name, G4AttDef& def)
{
const std::map<G4String, G4AttDef>* attDefs = object.GetAttDefs();
std::map<G4String, G4AttDef>::const_iterator iter = attDefs->find(name);
if (iter == attDefs->end()) return false;
def = iter->second;
return true;
}
// Extract attribute value with given name
template <typename T>
G4bool ExtractAttValue(const T& object, const G4String& name, G4AttValue& attVal)
{
std::vector<G4AttValue>* attValues = object.CreateAttValues();
std::vector<G4AttValue>::iterator iter = std::find_if(attValues->begin(), attValues->end(),
HasName<G4AttValue>(name));
if (iter == attValues->end()) return false;
attVal = *iter;
// Clean up
delete attValues;
return true;
}
// Get G4TypeKey information for old style G4AttDef's
G4TypeKey GetKey(const G4AttDef& def);
}
#endif