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51 lines
1.4 KiB
Plaintext
51 lines
1.4 KiB
Plaintext
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%ModuleHeaderCode
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#include <qgsnetworkspeedstrategy.h>
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#include <qgsnetworkdistancestrategy.h>
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%End
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/**
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* \ingroup analysis
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* \class QgsNetworkStrategy
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* \brief QgsNetworkStrategy defines strategy used for calculation of the edge cost. For example it can
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* take into account travel distance, amount of time or money. Currently there are two strategies
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* implemented in the analysis library: QgsNetworkDistanceStrategy and QgsNetworkSpeedStrategy.
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* QgsNetworkStrategy implemented using "strategy" design pattern.
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*/
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class QgsNetworkStrategy
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{
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%TypeHeaderCode
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#include <qgsnetworkstrategy.h>
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%End
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%ConvertToSubClassCode
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if ( dynamic_cast< QgsNetworkDistanceStrategy* > ( sipCpp ) != NULL )
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sipType = sipType_QgsNetworkDistanceStrategy;
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else if ( dynamic_cast< QgsNetworkSpeedStrategy* > ( sipCpp ) != NULL )
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sipType = sipType_QgsNetworkSpeedStrategy;
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else
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sipType = NULL;
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%End
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public:
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/**
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* Default constructor
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*/
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QgsNetworkStrategy();
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virtual ~QgsNetworkStrategy();
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/**
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* Returns list of the source layer attributes needed for cost calculation.
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* This method called by QgsGraphDirector.
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* \return list of required attributes
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*/
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virtual QgsAttributeList requiredAttributes() const;
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/**
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* Returns edge cost
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*/
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virtual QVariant cost( double distance, const QgsFeature &f ) const = 0;
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};
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