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nav2_costmap_2d::CostmapLayer Class Reference

A costmap layer base class for costmap plugin layers. Rather than just a layer, this object also contains an internal costmap object to populate and maintain state. More...

#include <nav2_costmap_2d/include/nav2_costmap_2d/costmap_layer.hpp>

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Public Member Functions

 CostmapLayer ()
 CostmapLayer constructor.
 
bool isDiscretized ()
 If layer is discrete.
 
virtual void matchSize ()
 Match the size of the master costmap.
 
virtual void clearArea (int start_x, int start_y, int end_x, int end_y, bool invert)
 Clear an are in the costmap with the given dimension if invert, then clear everything except these dimensions.
 
void addExtraBounds (double mx0, double my0, double mx1, double my1)
 
- Public Member Functions inherited from nav2_costmap_2d::Layer
 Layer ()
 A constructor.
 
virtual ~Layer ()
 A destructor.
 
void initialize (LayeredCostmap *parent, std::string name, tf2_ros::Buffer *tf, const nav2_util::LifecycleNode::WeakPtr &node, rclcpp::CallbackGroup::SharedPtr callback_group)
 Initialization process of layer on startup.
 
virtual void deactivate ()
 Stop publishers.
 
virtual void activate ()
 Restart publishers if they've been stopped.
 
virtual void reset ()=0
 Reset this costmap.
 
virtual bool isClearable ()=0
 If clearing operations should be processed on this layer or not.
 
virtual void updateBounds (double robot_x, double robot_y, double robot_yaw, double *min_x, double *min_y, double *max_x, double *max_y)=0
 This is called by the LayeredCostmap to poll this plugin as to how much of the costmap it needs to update. Each layer can increase the size of this bounds. More...
 
virtual void updateCosts (Costmap2D &master_grid, int min_i, int min_j, int max_i, int max_j)=0
 Actually update the underlying costmap, only within the bounds calculated during UpdateBounds().
 
virtual void onFootprintChanged ()
 LayeredCostmap calls this whenever the footprint there changes (via LayeredCostmap::setFootprint()). Override to be notified of changes to the robot's footprint.
 
std::string getName () const
 Get the name of the costmap layer.
 
bool isCurrent () const
 Check to make sure all the data in the layer is up to date. If the layer is not up to date, then it may be unsafe to plan using the data from this layer, and the planner may need to know. More...
 
bool isEnabled () const
 Gets whether the layer is enabled.
 
const std::vector< geometry_msgs::msg::Point > & getFootprint () const
 Convenience function for layered_costmap_->getFootprint().
 
void declareParameter (const std::string &param_name, const rclcpp::ParameterValue &value)
 Convenience functions for declaring ROS parameters.
 
void declareParameter (const std::string &param_name, const rclcpp::ParameterType &param_type)
 Convenience functions for declaring ROS parameters.
 
bool hasParameter (const std::string &param_name)
 Convenience functions for declaring ROS parameters.
 
std::string getFullName (const std::string &param_name)
 Convenience functions for declaring ROS parameters.
 
- Public Member Functions inherited from nav2_costmap_2d::Costmap2D
 Costmap2D (unsigned int cells_size_x, unsigned int cells_size_y, double resolution, double origin_x, double origin_y, unsigned char default_value=0)
 Constructor for a costmap. More...
 
 Costmap2D (const Costmap2D &map)
 Copy constructor for a costmap, creates a copy efficiently. More...
 
 Costmap2D (const nav_msgs::msg::OccupancyGrid &map)
 Constructor for a costmap from an OccupancyGrid map. More...
 
Costmap2Doperator= (const Costmap2D &map)
 Overloaded assignment operator. More...
 
bool copyCostmapWindow (const Costmap2D &map, double win_origin_x, double win_origin_y, double win_size_x, double win_size_y)
 Turn this costmap into a copy of a window of a costmap passed in. More...
 
bool copyWindow (const Costmap2D &source, unsigned int sx0, unsigned int sy0, unsigned int sxn, unsigned int syn, unsigned int dx0, unsigned int dy0)
 Copies the (x0,y0)..(xn,yn) window from source costmap into a current costmap. More...
 
 Costmap2D ()
 Default constructor.
 
virtual ~Costmap2D ()
 Destructor.
 
unsigned char getCost (unsigned int mx, unsigned int my) const
 Get the cost of a cell in the costmap. More...
 
unsigned char getCost (unsigned int index) const
 Get the cost of a cell in the costmap. More...
 
void setCost (unsigned int mx, unsigned int my, unsigned char cost)
 Set the cost of a cell in the costmap. More...
 
void mapToWorld (unsigned int mx, unsigned int my, double &wx, double &wy) const
 Convert from map coordinates to world coordinates. More...
 
bool worldToMap (double wx, double wy, unsigned int &mx, unsigned int &my) const
 Convert from world coordinates to map coordinates. More...
 
bool worldToMapContinuous (double wx, double wy, float &mx, float &my) const
 Convert from world coordinates to map coordinates. More...
 
void worldToMapNoBounds (double wx, double wy, int &mx, int &my) const
 Convert from world coordinates to map coordinates without checking for legal bounds. More...
 
void worldToMapEnforceBounds (double wx, double wy, int &mx, int &my) const
 Convert from world coordinates to map coordinates, constraining results to legal bounds. More...
 
unsigned int getIndex (unsigned int mx, unsigned int my) const
 Given two map coordinates... compute the associated index. More...
 
void indexToCells (unsigned int index, unsigned int &mx, unsigned int &my) const
 Given an index... compute the associated map coordinates. More...
 
unsigned char * getCharMap () const
 Will return a pointer to the underlying unsigned char array used as the costmap. More...
 
unsigned int getSizeInCellsX () const
 Accessor for the x size of the costmap in cells. More...
 
unsigned int getSizeInCellsY () const
 Accessor for the y size of the costmap in cells. More...
 
double getSizeInMetersX () const
 Accessor for the x size of the costmap in meters. More...
 
double getSizeInMetersY () const
 Accessor for the y size of the costmap in meters. More...
 
double getOriginX () const
 Accessor for the x origin of the costmap. More...
 
double getOriginY () const
 Accessor for the y origin of the costmap. More...
 
double getResolution () const
 Accessor for the resolution of the costmap. More...
 
void setDefaultValue (unsigned char c)
 Set the default background value of the costmap. More...
 
unsigned char getDefaultValue ()
 Get the default background value of the costmap. More...
 
bool setConvexPolygonCost (const std::vector< geometry_msgs::msg::Point > &polygon, unsigned char cost_value)
 Sets the cost of a convex polygon to a desired value. More...
 
void polygonOutlineCells (const std::vector< MapLocation > &polygon, std::vector< MapLocation > &polygon_cells)
 Get the map cells that make up the outline of a polygon. More...
 
void convexFillCells (const std::vector< MapLocation > &polygon, std::vector< MapLocation > &polygon_cells)
 Get the map cells that fill a convex polygon. More...
 
virtual void updateOrigin (double new_origin_x, double new_origin_y)
 Move the origin of the costmap to a new location.... keeping data when it can. More...
 
bool saveMap (std::string file_name)
 Save the costmap out to a pgm file. More...
 
void resizeMap (unsigned int size_x, unsigned int size_y, double resolution, double origin_x, double origin_y)
 Resize the costmap.
 
void resetMap (unsigned int x0, unsigned int y0, unsigned int xn, unsigned int yn)
 Reset the costmap in bounds.
 
void resetMapToValue (unsigned int x0, unsigned int y0, unsigned int xn, unsigned int yn, unsigned char value)
 Reset the costmap in bounds to a value.
 
unsigned int cellDistance (double world_dist)
 Given distance in the world... convert it to cells. More...
 
mutex_t * getMutex ()
 

Protected Member Functions

void updateWithTrueOverwrite (nav2_costmap_2d::Costmap2D &master_grid, int min_i, int min_j, int max_i, int max_j)
 
void updateWithOverwrite (nav2_costmap_2d::Costmap2D &master_grid, int min_i, int min_j, int max_i, int max_j)
 
void updateWithMax (nav2_costmap_2d::Costmap2D &master_grid, int min_i, int min_j, int max_i, int max_j)
 
void updateWithMaxWithoutUnknownOverwrite (nav2_costmap_2d::Costmap2D &master_grid, int min_i, int min_j, int max_i, int max_j)
 
void updateWithAddition (nav2_costmap_2d::Costmap2D &master_grid, int min_i, int min_j, int max_i, int max_j)
 
void touch (double x, double y, double *min_x, double *min_y, double *max_x, double *max_y)
 
void useExtraBounds (double *min_x, double *min_y, double *max_x, double *max_y)
 
CombinationMethod combination_method_from_int (const int value)
 Converts an integer to a CombinationMethod enum and logs on failure. More...
 
- Protected Member Functions inherited from nav2_costmap_2d::Layer
virtual void onInitialize ()
 This is called at the end of initialize(). Override to implement subclass-specific initialization. More...
 
- Protected Member Functions inherited from nav2_costmap_2d::Costmap2D
template<typename data_type >
void copyMapRegion (data_type *source_map, unsigned int sm_lower_left_x, unsigned int sm_lower_left_y, unsigned int sm_size_x, data_type *dest_map, unsigned int dm_lower_left_x, unsigned int dm_lower_left_y, unsigned int dm_size_x, unsigned int region_size_x, unsigned int region_size_y)
 Copy a region of a source map into a destination map. More...
 
virtual void deleteMaps ()
 Deletes the costmap, static_map, and markers data structures.
 
virtual void resetMaps ()
 Resets the costmap and static_map to be unknown space.
 
virtual void initMaps (unsigned int size_x, unsigned int size_y)
 Initializes the costmap, static_map, and markers data structures. More...
 
template<class ActionType >
void raytraceLine (ActionType at, unsigned int x0, unsigned int y0, unsigned int x1, unsigned int y1, unsigned int max_length=UINT_MAX, unsigned int min_length=0)
 Raytrace a line and apply some action at each step. More...
 

Protected Attributes

bool has_extra_bounds_
 
- Protected Attributes inherited from nav2_costmap_2d::Layer
LayeredCostmaplayered_costmap_
 
std::string name_
 
tf2_ros::Buffer * tf_
 
rclcpp::CallbackGroup::SharedPtr callback_group_
 
rclcpp_lifecycle::LifecycleNode::WeakPtr node_
 
rclcpp::Clock::SharedPtr clock_
 
rclcpp::Logger logger_ {rclcpp::get_logger("nav2_costmap_2d")}
 
bool current_
 
bool enabled_
 
std::unordered_set< std::string > local_params_
 
- Protected Attributes inherited from nav2_costmap_2d::Costmap2D
unsigned int size_x_
 
unsigned int size_y_
 
double resolution_
 
double origin_x_
 
double origin_y_
 
unsigned char * costmap_
 
unsigned char default_value_
 

Additional Inherited Members

- Public Types inherited from nav2_costmap_2d::Costmap2D
typedef std::recursive_mutex mutex_t
 

Detailed Description

A costmap layer base class for costmap plugin layers. Rather than just a layer, this object also contains an internal costmap object to populate and maintain state.

Definition at line 54 of file costmap_layer.hpp.

Member Function Documentation

◆ addExtraBounds()

void nav2_costmap_2d::CostmapLayer::addExtraBounds ( double  mx0,
double  my0,
double  mx1,
double  my1 
)

If an external source changes values in the costmap, it should call this method with the area that it changed to ensure that the costmap includes this region as well.

Parameters
mx0Minimum x value of the bounding box
my0Minimum y value of the bounding box
mx1Maximum x value of the bounding box
my1Maximum y value of the bounding box

Definition at line 84 of file costmap_layer.cpp.

◆ combination_method_from_int()

CombinationMethod nav2_costmap_2d::CostmapLayer::combination_method_from_int ( const int  value)
protected

Converts an integer to a CombinationMethod enum and logs on failure.

Parameters
valueThe integer to convert
function_nameThe name of the function calling this conversion (for logging)

Definition at line 249 of file costmap_layer.cpp.

References nav2_costmap_2d::Max, nav2_costmap_2d::MaxWithoutUnknownOverwrite, and nav2_costmap_2d::Overwrite.

Referenced by nav2_costmap_2d::ObstacleLayer::dynamicParametersCallback(), nav2_costmap_2d::PluginContainerLayer::dynamicParametersCallback(), nav2_costmap_2d::VoxelLayer::dynamicParametersCallback(), nav2_costmap_2d::ObstacleLayer::onInitialize(), nav2_costmap_2d::PluginContainerLayer::onInitialize(), and nav2_costmap_2d::VoxelLayer::onInitialize().

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◆ touch()

void nav2_costmap_2d::CostmapLayer::touch ( double  x,
double  y,
double *  min_x,
double *  min_y,
double *  max_x,
double *  max_y 
)
protected

Updates the bounding box specified in the parameters to include the location (x,y)

Parameters
xx-coordinate to include
yy-coordinate to include
min_xbounding box
min_ybounding box
max_xbounding box
max_ybounding box

Definition at line 46 of file costmap_layer.cpp.

Referenced by nav2_costmap_2d::ObstacleLayer::raytraceFreespace(), nav2_costmap_2d::ObstacleLayer::updateBounds(), nav2_costmap_2d::VoxelLayer::updateBounds(), nav2_costmap_2d::ObstacleLayer::updateFootprint(), nav2_costmap_2d::StaticLayer::updateFootprint(), and nav2_costmap_2d::ObstacleLayer::updateRaytraceBounds().

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