OpenTTD Source  20241121-master-g67a0fccfad
MCF2ndPass Class Reference

Second pass of the MCF calculation. More...

#include <mcf.h>

Inheritance diagram for MCF2ndPass:
MultiCommodityFlow

Public Member Functions

 MCF2ndPass (LinkGraphJob &job)
 Run the second pass of the MCF calculation which assigns all remaining demands to existing paths. More...
 

Additional Inherited Members

- Protected Member Functions inherited from MultiCommodityFlow
 MultiCommodityFlow (LinkGraphJob &job)
 Constructor. More...
 
template<class Tannotation , class Tedge_iterator >
void Dijkstra (NodeID from, PathVector &paths)
 A slightly modified Dijkstra algorithm. More...
 
uint PushFlow (Node &node, NodeID to, Path *path, uint accuracy, uint max_saturation)
 Push flow along a path and update the unsatisfied_demand of the associated edge. More...
 
void CleanupPaths (NodeID source, PathVector &paths)
 Clean up paths that lead nowhere and the root path. More...
 
- Protected Attributes inherited from MultiCommodityFlow
LinkGraphJobjob
 Job we're working with.
 
uint max_saturation
 Maximum saturation for edges.
 

Detailed Description

Second pass of the MCF calculation.

Saturates paths with most capacity left first and doesn't create any paths along edges that haven't been visited in the first pass. This is why it doesn't have to do any cycle detection and elimination. As cycle detection is the most intense problem in the first pass this pass is cheaper. The accuracy is used here, too.

Definition at line 66 of file mcf.h.

Constructor & Destructor Documentation

◆ MCF2ndPass()

MCF2ndPass::MCF2ndPass ( LinkGraphJob job)

Run the second pass of the MCF calculation which assigns all remaining demands to existing paths.

Parameters
jobLink graph job to calculate.

Definition at line 547 of file mcf.cpp.

References MultiCommodityFlow::max_saturation.


The documentation for this class was generated from the following files: