Parasol Planning Library (PPL)
Data Structures
BasicPRM Class Reference

#include <BasicPRM.h>

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Data Structures

struct  SamplerSetting
 Settings for a specific sampler. More...
 

Public Types

Motion Planning Types
typedef MPBaseObject::RoadmapType RoadmapType
 
typedef RoadmapType::VID VID
 
- Public Types inherited from MPStrategyMethod
typedef size_t VID
 
- Public Types inherited from MPBaseObject
typedef DefaultWeight< CfgWeightType
 
typedef GenericStateGraph< Cfg, WeightTypeRoadmapType
 
typedef GroupCfg< RoadmapTypeGroupCfgType
 
typedef GroupLocalPlan< RoadmapTypeGroupWeightType
 
typedef GroupRoadmap< GroupCfgType, GroupWeightTypeGroupRoadmapType
 

Public Member Functions

Construction
 BasicPRM ()
 
 BasicPRM (XMLNode &_node)
 
virtual ~BasicPRM ()=default
 
MPBaseObject Overrides
virtual void Print (std::ostream &_os) const override
 
- Public Member Functions inherited from MPStrategyMethod
 MPStrategyMethod ()=default
 
 MPStrategyMethod (XMLNode &_node)
 
virtual ~MPStrategyMethod ()
 
void operator() ()
 Execute the strategy by calling Initialize, Run, and Finalize. More...
 
void EnableOutputFiles (const bool _enable=true)
 
virtual void Initialize ()
 
- Public Member Functions inherited from MPBaseObject
 MPBaseObject (const std::string &_label="", const std::string &_name="", bool _debug=false)
 
 MPBaseObject (XMLNode &_node)
 
virtual ~MPBaseObject ()
 
const std::string & GetName () const
 Get the class name for this object. More...
 
const std::string & GetLabel () const
 Get the unique label for this object. More...
 
std::string GetNameAndLabel () const
 Get the unique string identifier for this object "m_name::m_label". More...
 
void SetLabel (const std::string &)
 Set the unique label for this object. More...
 
void SetMPLibrary (MPLibrary *) noexcept
 Set the owning MPLibrary. More...
 
MPLibraryGetMPLibrary () const noexcept
 Get the owning MPLibrary. More...
 
bool IsRunning () const noexcept
 Check the library's running flag. More...
 
MPProblemGetMPProblem () const noexcept
 Get the library's current MPProblem. More...
 
EnvironmentGetEnvironment () const noexcept
 Get the current environment. More...
 
MPTaskGetTask () const noexcept
 Get the current task. More...
 
GroupTaskGetGroupTask () const noexcept
 Get the current group task. More...
 
MPSolutionTypeGetMPSolution () const noexcept
 
RoadmapTypeGetRoadmap (Robot *const _r=nullptr) const noexcept
 Get the current free-space roadmap. More...
 
GroupRoadmapTypeGetGroupRoadmap (RobotGroup *const _g=nullptr) const noexcept
 Get the current free-space group roadmap. More...
 
RoadmapTypeGetBlockRoadmap (Robot *const _r=nullptr) const noexcept
 Get the current obstacle-space roadmap. More...
 
PathGetPath (Robot *const _r=nullptr) const noexcept
 
GroupPathGetGroupPath (RobotGroup *const _g=nullptr) const noexcept
 Get the current best group path. More...
 
StatClassGetStatClass () const noexcept
 Get the current StatClass. More...
 
LocalObstacleMapGetLocalObstacleMap () const noexcept
 Get the local obstacle map. More...
 

Protected Member Functions

MPStrategyMethod Overrides
virtual void Initialize () override
 
virtual void Iterate () override
 Execute one iteration of the strategy. More...
 
Helpers
std::vector< VIDSample ()
 
void Connect (const std::vector< VID > &_vids)
 
- Protected Member Functions inherited from MPStrategyMethod
virtual void Run ()
 Call Iterate until EvaluateMap is true. More...
 
virtual bool EvaluateMap ()
 Check if we satisfied all map evaluators. More...
 
virtual void Finalize ()
 Clean-up and output results. More...
 
virtual void ClearRoadmap ()
 Pre-clear the roadmap(s) if requested. More...
 
virtual size_t GenerateStart (const std::string &_samplerLabel="")
 
virtual std::vector< size_t > GenerateGoals (const std::string &_samplerLabel="")
 
- Protected Member Functions inherited from MPBaseObject
void SetName (const std::string &_s)
 
const std::string & GetBaseFilename () const
 

Protected Attributes

Internal State
std::vector< SamplerSettingm_samplers
 Sampler labels with number and attempts of sampler. More...
 
std::vector< std::string > m_connectorLabels
 Connector labels for node-to-node. More...
 
std::string m_inputMapFilename
 Input roadmap to initialize map. More...
 
Fix-base hacks

To be removed when we properly implement path constraints or perhaps a sampler-method option.

bool m_fixBase {false}
 
std::unique_ptr< Boundarym_samplingBoundary
 An optional sampling boundary for fixing the base. More...
 
- Protected Attributes inherited from MPStrategyMethod
std::string m_querySampler
 Sampler for generating start/goal. More...
 
std::vector< std::string > m_meLabels
 The list of map evaluators to use. More...
 
size_t m_iterations {0}
 The number of executed iterations. More...
 
bool m_writeOutput {true}
 Write output at the end? More...
 
bool m_clearMap {false}
 Clear the roadmap(s) before run? More...
 
- Protected Attributes inherited from MPBaseObject
bool m_debug
 Print debug info? More...
 

Detailed Description

Basic PRM algorithm.

Reference: Lydia E. Kavraki and Petr Svestka and Jean-Claude Latombe and Mark H. Overmars. "Probabilistic Roadmaps for Path Planning in High-Dimensional Configuration Spaces". TRO 1996.

Member Typedef Documentation

◆ RoadmapType

◆ VID

Constructor & Destructor Documentation

◆ BasicPRM() [1/2]

BasicPRM::BasicPRM ( )

◆ BasicPRM() [2/2]

BasicPRM::BasicPRM ( XMLNode _node)

◆ ~BasicPRM()

virtual BasicPRM::~BasicPRM ( )
virtualdefault

Member Function Documentation

◆ Connect()

void BasicPRM::Connect ( const std::vector< VID > &  _vids)
protected

Connect nodes in the roadmap.

Parameters
_vidsA set of node VIDs to connect to the rest of the roadmap.

◆ Initialize()

void BasicPRM::Initialize ( )
overrideprotectedvirtual

Initialize this object for the current MPProblem. This should reset any internal state of the algorithms so that they are ready for execution. It is also the place to initialize any state that depends on the current problem.

Warning
This member will be called for every compiled algorithm in the planning library - even those that will not be used. If an algorithm needs to do expenisve setup, then this method should only set a flag that tells it to do so on first use. The only exceptions are the MPStrategies, which will only have their initialize called on first use.
Todo:
Move input map parsing to the MPSolution somehow?

Reimplemented from MPBaseObject.

Reimplemented in TogglePRMStrategy.

◆ Iterate()

void BasicPRM::Iterate ( )
overrideprotectedvirtual

Execute one iteration of the strategy.

Reimplemented from MPStrategyMethod.

Reimplemented in TogglePRMStrategy.

◆ Print()

void BasicPRM::Print ( std::ostream &  _os) const
overridevirtual

Print internal state of this object.

Parameters
_osThe std::ostream to print to.

Reimplemented from MPStrategyMethod.

Reimplemented in TogglePRMStrategy.

◆ Sample()

std::vector< size_t > BasicPRM::Sample ( )
protected

Sample and add configurations to the roadmap.

Returns
The generated VIDs for the successful samples.

Field Documentation

◆ m_connectorLabels

std::vector<std::string> BasicPRM::m_connectorLabels
protected

Connector labels for node-to-node.

◆ m_fixBase

bool BasicPRM::m_fixBase {false}
protected

Keep the base fixed to the start cfg?

◆ m_inputMapFilename

std::string BasicPRM::m_inputMapFilename
protected

Input roadmap to initialize map.

◆ m_samplers

std::vector<SamplerSetting> BasicPRM::m_samplers
protected

Sampler labels with number and attempts of sampler.

◆ m_samplingBoundary

std::unique_ptr<Boundary> BasicPRM::m_samplingBoundary
protected

An optional sampling boundary for fixing the base.


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