Public Member Functions | Protected Member Functions | Protected Attributes
distance_field::VoxelGrid< T > Class Template Reference

VoxelGrid holds a dense 3D, axis-aligned set of data at a given resolution, where the data is supplied as a template parameter. More...

#include <voxel_grid.h>

List of all members.

Public Member Functions

TgetCell (int x, int y, int z)
 Gives the value of the given location (x,y,z) in the discretized voxel grid space.
TgetCell (const Eigen::Vector3i &pos)
const TgetCell (int x, int y, int z) const
const TgetCell (const Eigen::Vector3i &pos) const
int getNumCells (Dimension dim) const
 Gets the number of cells in the indicated dimension.
double getOrigin (Dimension dim) const
 Gets the origin (miniumum point) of the indicated dimension.
double getResolution () const
 Gets the resolution in arbitrary consistent units.
double getResolution (Dimension dim) const
 deprecated. Use the version with no arguments.
double getSize (Dimension dim) const
 Gets the size in arbitrary units of the indicated dimension.
void gridToWorld (int x, int y, int z, double &world_x, double &world_y, double &world_z) const
 Converts grid coordinates to world coordinates.
void gridToWorld (const Eigen::Vector3i &grid, Eigen::Vector3i &world) const
bool isCellValid (int x, int y, int z) const
 Checks if the given cell in integer coordinates is within the voxel grid.
bool isCellValid (const Eigen::Vector3i &pos) const
bool isCellValid (Dimension dim, int cell) const
 Checks if the indicated index is valid along a particular dimension.
 MOVEIT_DECLARE_PTR_MEMBER (VoxelGrid)
const Toperator() (double x, double y, double z) const
 Operator that gets the value of the given location (x, y, z) given the discretization of the volume. The location represents a location in the original coordinate frame used to construct the voxel grid.
const Toperator() (const Eigen::Vector3d &pos) const
void reset (const T &initial)
 Sets every cell in the voxel grid to the supplied data.
void resize (double size_x, double size_y, double size_z, double resolution, double origin_x, double origin_y, double origin_z, T default_object)
 Resize the VoxelGrid.
void setCell (int x, int y, int z, const T &obj)
 Sets the value of the given location (x,y,z) in the discretized voxel grid space to supplied value.
void setCell (const Eigen::Vector3i &pos, const T &obj)
 VoxelGrid (double size_x, double size_y, double size_z, double resolution, double origin_x, double origin_y, double origin_z, T default_object)
 Constructor for the VoxelGrid.
 VoxelGrid ()
 Default constructor for the VoxelGrid.
bool worldToGrid (double world_x, double world_y, double world_z, int &x, int &y, int &z) const
 Converts from a world location to a set of integer indices. Does check whether or not the cell being returned is valid. The returned indices will be computed even if they are invalid.
bool worldToGrid (const Eigen::Vector3i &world, Eigen::Vector3i &grid) const
virtual ~VoxelGrid ()

Protected Member Functions

int getCellFromLocation (Dimension dim, double loc) const
 Gets the cell number from the location.
double getLocationFromCell (Dimension dim, int cell) const
 Gets the center of the cell in world coordinates along the given dimension. No validity check.
int ref (int x, int y, int z) const
 Gets the 1D index into the array, with no validity check.

Protected Attributes

Tdata_
 Storage for the full set of data elements.
T *** data_ptrs_
 3D array of pointers to the data elements
T default_object_
 The default object to return in case of out-of-bounds query.
int num_cells_ [3]
 The number of cells in each dimension (in Dimension order)
int num_cells_total_
 The total number of voxels in the grid.
double oo_resolution_
 1.0/resolution_
double origin_ [3]
 The origin (minumum point) of each dimension in meters (in Dimension order)
double origin_minus_ [3]
 origin - 0.5/resolution
double resolution_
 The resolution of each dimension in meters (in Dimension order)
double size_ [3]
 The size of each dimension in meters (in Dimension order)
int stride1_
 The step to take when stepping between consecutive X members in the 1D array.
int stride2_
 The step to take when stepping between consecutive Y members given an X in the 1D array.

Detailed Description

template<typename T>
class distance_field::VoxelGrid< T >

VoxelGrid holds a dense 3D, axis-aligned set of data at a given resolution, where the data is supplied as a template parameter.

Definition at line 62 of file voxel_grid.h.


Constructor & Destructor Documentation

template<typename T>
distance_field::VoxelGrid< T >::VoxelGrid ( double  size_x,
double  size_y,
double  size_z,
double  resolution,
double  origin_x,
double  origin_y,
double  origin_z,
T  default_object 
)

Constructor for the VoxelGrid.

Constructs a dense representation of a 3D, axis-aligned volume at a given resolution. The volume can be represented in any consistent set of units, but for the sake of documentation we assume that the units are meters. The size of the the volume is given along each of the X, Y, and Z axes. The volume begins at the minimum point in each dimension, as specified by the origin parameters. The data structure will remain unintialized until the VoxelGrid::reset function is called.

Parameters:
[in]size_xSize of the X axis in meters
[in]size_ySize of the Y axis in meters
[in]size_zSize of the Z axis in meters
[in]resolutionResolution of a single cell in meters
[in]origin_xMinimum point along the X axis of the volume
[in]origin_yMinimum point along the Y axis of the volume
[in]origin_zMinimum point along the Z axis of the volume
[in]default_objectAn object that will be returned for any future queries that are not valid

Definition at line 343 of file voxel_grid.h.

template<typename T >
distance_field::VoxelGrid< T >::~VoxelGrid ( ) [virtual]

Definition at line 403 of file voxel_grid.h.

template<typename T>
distance_field::VoxelGrid< T >::VoxelGrid ( )

Default constructor for the VoxelGrid.

This is only useful if resize() is called after construction to set the size and resolution of the VoxelGrid.

Definition at line 351 of file voxel_grid.h.


Member Function Documentation

template<typename T >
T & distance_field::VoxelGrid< T >::getCell ( int  x,
int  y,
int  z 
) [inline]

Gives the value of the given location (x,y,z) in the discretized voxel grid space.

The address here is in the discretized space of the voxel grid, where the cell indicated by the constructor arguments (origin_x, origin_y, origin_z) is cell (0,0,0), and the cell indicated by (origin_x+x_size, origin_y+y_size, origin_z+z_size) will be (size_x/resolution, size_y/resolution, size_z/resolution).

Parameters:
[in]xThe X index of the desired cell
[in]yThe Y index of the desired cell
[in]zThe Z index of the desired cell
Returns:
The data in the indicated cell. If x,y,z is invalid then corruption and/or SEGFAULTS will occur.

Definition at line 480 of file voxel_grid.h.

template<typename T >
T & distance_field::VoxelGrid< T >::getCell ( const Eigen::Vector3i &  pos) [inline]

Definition at line 492 of file voxel_grid.h.

template<typename T >
const T & distance_field::VoxelGrid< T >::getCell ( int  x,
int  y,
int  z 
) const [inline]

Definition at line 486 of file voxel_grid.h.

template<typename T >
const T & distance_field::VoxelGrid< T >::getCell ( const Eigen::Vector3i &  pos) const [inline]

Definition at line 498 of file voxel_grid.h.

template<typename T >
int distance_field::VoxelGrid< T >::getCellFromLocation ( Dimension  dim,
double  loc 
) const [inline, protected]

Gets the cell number from the location.

Gets the cell number in a given dimension given a world value. No validity check.

Parameters:
[in]dimThe dimension of the query
[in]locThe world location along that dimension
Returns:
The computed cell index along the given dimension

Definition at line 516 of file voxel_grid.h.

template<typename T >
double distance_field::VoxelGrid< T >::getLocationFromCell ( Dimension  dim,
int  cell 
) const [inline, protected]

Gets the center of the cell in world coordinates along the given dimension. No validity check.

Parameters:
[in]dimThe dimension of the query
[in]cellThe cell along the given dimension
Returns:
The world coordinate of the center of the cell

Definition at line 536 of file voxel_grid.h.

template<typename T >
int distance_field::VoxelGrid< T >::getNumCells ( Dimension  dim) const [inline]

Gets the number of cells in the indicated dimension.

Parameters:
[in]dimThe dimension for the query
Returns:
The number of cells for the indicated dimension

Definition at line 457 of file voxel_grid.h.

template<typename T >
double distance_field::VoxelGrid< T >::getOrigin ( Dimension  dim) const [inline]

Gets the origin (miniumum point) of the indicated dimension.

Parameters:
[in]dimThe dimension for the query
Returns:
The indicated axis origin

Definition at line 451 of file voxel_grid.h.

template<typename T >
double distance_field::VoxelGrid< T >::getResolution ( ) const [inline]

Gets the resolution in arbitrary consistent units.

Returns:
The resolution in meters

Definition at line 439 of file voxel_grid.h.

template<typename T >
double distance_field::VoxelGrid< T >::getResolution ( Dimension  dim) const [inline]

deprecated. Use the version with no arguments.

Definition at line 445 of file voxel_grid.h.

template<typename T >
double distance_field::VoxelGrid< T >::getSize ( Dimension  dim) const [inline]

Gets the size in arbitrary units of the indicated dimension.

Parameters:
[in]dimThe dimension for the query
Returns:
The size in meters

Definition at line 433 of file voxel_grid.h.

template<typename T >
void distance_field::VoxelGrid< T >::gridToWorld ( int  x,
int  y,
int  z,
double &  world_x,
double &  world_y,
double &  world_z 
) const [inline]

Converts grid coordinates to world coordinates.

Converts from an set of integer indices to a world location given the origin and resolution parameters. There is no check whether or not the cell or world locations lie within the represented region.

Parameters:
[in]xThe integer X location
[in]yThe integer Y location
[in]zThe integer Z location
[out]world_xThe computed world X location
[out]world_yThe computed world X location
[out]world_zThe computed world X location
Returns:
True, as there is no check that the integer locations are valid

Definition at line 548 of file voxel_grid.h.

template<typename T >
void distance_field::VoxelGrid< T >::gridToWorld ( const Eigen::Vector3i &  grid,
Eigen::Vector3i &  world 
) const [inline]

Definition at line 556 of file voxel_grid.h.

template<typename T >
bool distance_field::VoxelGrid< T >::isCellValid ( int  x,
int  y,
int  z 
) const [inline]

Checks if the given cell in integer coordinates is within the voxel grid.

Parameters:
[in]xThe integer X location
[in]yThe integer Y location
[in]zThe integer Z location
Returns:
True if the cell lies within the voxel grid; otherwise False.

Definition at line 409 of file voxel_grid.h.

template<typename T >
bool distance_field::VoxelGrid< T >::isCellValid ( const Eigen::Vector3i &  pos) const [inline]

Definition at line 415 of file voxel_grid.h.

template<typename T >
bool distance_field::VoxelGrid< T >::isCellValid ( Dimension  dim,
int  cell 
) const [inline]

Checks if the indicated index is valid along a particular dimension.

Parameters:
[in]dimThe dimension for the query
[in]cellThe index along that dimension
Returns:
True if the cell is valid along that dimension; otherwise False.

Definition at line 421 of file voxel_grid.h.

template<typename T >
const T & distance_field::VoxelGrid< T >::operator() ( double  x,
double  y,
double  z 
) const [inline]

Operator that gets the value of the given location (x, y, z) given the discretization of the volume. The location represents a location in the original coordinate frame used to construct the voxel grid.

Parameters:
[in]xX component of the desired location
[in]yY component of the desired location
[in]zZ component of the desired location
Returns:
The data stored at that location, or a default value supplied in the constructor if the location is not valid.

Definition at line 463 of file voxel_grid.h.

template<typename T >
const T & distance_field::VoxelGrid< T >::operator() ( const Eigen::Vector3d &  pos) const [inline]

Definition at line 474 of file voxel_grid.h.

template<typename T >
int distance_field::VoxelGrid< T >::ref ( int  x,
int  y,
int  z 
) const [inline, protected]

Gets the 1D index into the array, with no validity check.

Parameters:
[in]xThe integer X location
[in]yThe integer Y location
[in]zThe integer Z location
Returns:
The computed 1D index

Definition at line 427 of file voxel_grid.h.

template<typename T>
void distance_field::VoxelGrid< T >::reset ( const T initial) [inline]

Sets every cell in the voxel grid to the supplied data.

Parameters:
[in]initialThe template variable to which to set the data

Definition at line 542 of file voxel_grid.h.

template<typename T>
void distance_field::VoxelGrid< T >::resize ( double  size_x,
double  size_y,
double  size_z,
double  resolution,
double  origin_x,
double  origin_y,
double  origin_z,
T  default_object 
)

Resize the VoxelGrid.

This discards all the data in the voxel grid and reinitializes it with a new size and resolution. This is mainly useful if the size or resolution is not known until after the voxelgrid is constructed.

Parameters:
[in]size_xSize of the X axis in meters
[in]size_ySize of the Y axis in meters
[in]size_zSize of the Z axis in meters
[in]resolutionResolution of a single cell in meters
[in]origin_xMinimum point along the X axis of the volume
[in]origin_yMinimum point along the Y axis of the volume
[in]origin_zMinimum point along the Z axis of the volume

Definition at line 368 of file voxel_grid.h.

template<typename T>
void distance_field::VoxelGrid< T >::setCell ( int  x,
int  y,
int  z,
const T obj 
) [inline]

Sets the value of the given location (x,y,z) in the discretized voxel grid space to supplied value.

The address here is in the discretized space of the voxel grid, where the cell indicated by the constructor arguments (origin_x, origin_y, origin_z) is cell (0,0,0), and the cell indicated by (origin_x+x_size, origin_y+y_size, origin_z+z_size) will be (size_x/resolution, size_y/resolution, size_z/resolution).

If the arguments do not indicate a valid cell, corruption and/or SEGFAULTS will occur.

Parameters:
[in]xThe X index of the desired cell
[in]yThe Y index of the desired cell
[in]zThe Z index of the desired cell
[out]objThe data to place into the given cell

Definition at line 504 of file voxel_grid.h.

template<typename T>
void distance_field::VoxelGrid< T >::setCell ( const Eigen::Vector3i &  pos,
const T obj 
) [inline]

Definition at line 510 of file voxel_grid.h.

template<typename T >
bool distance_field::VoxelGrid< T >::worldToGrid ( double  world_x,
double  world_y,
double  world_z,
int &  x,
int &  y,
int &  z 
) const [inline]

Converts from a world location to a set of integer indices. Does check whether or not the cell being returned is valid. The returned indices will be computed even if they are invalid.

Parameters:
[in]world_xThe world X location
[in]world_yThe world Y location
[in]world_zThe world Z location
[out]xThe computed integer X location
[out]yThe computed integer X location
[out]zThe computed integer X location
Returns:
True if all the world values result in integer indices that pass a validity check; otherwise False.

Definition at line 564 of file voxel_grid.h.

template<typename T >
bool distance_field::VoxelGrid< T >::worldToGrid ( const Eigen::Vector3i &  world,
Eigen::Vector3i &  grid 
) const [inline]

Definition at line 573 of file voxel_grid.h.


Member Data Documentation

template<typename T>
T* distance_field::VoxelGrid< T >::data_ [protected]

Storage for the full set of data elements.

Definition at line 290 of file voxel_grid.h.

template<typename T>
T*** distance_field::VoxelGrid< T >::data_ptrs_ [protected]

3D array of pointers to the data elements

Definition at line 292 of file voxel_grid.h.

template<typename T>
T distance_field::VoxelGrid< T >::default_object_ [protected]

The default object to return in case of out-of-bounds query.

Definition at line 291 of file voxel_grid.h.

template<typename T>
int distance_field::VoxelGrid< T >::num_cells_[3] [protected]

The number of cells in each dimension (in Dimension order)

Definition at line 298 of file voxel_grid.h.

template<typename T>
int distance_field::VoxelGrid< T >::num_cells_total_ [protected]

The total number of voxels in the grid.

Definition at line 299 of file voxel_grid.h.

template<typename T>
double distance_field::VoxelGrid< T >::oo_resolution_ [protected]

1.0/resolution_

Definition at line 295 of file voxel_grid.h.

template<typename T>
double distance_field::VoxelGrid< T >::origin_[3] [protected]

The origin (minumum point) of each dimension in meters (in Dimension order)

Definition at line 296 of file voxel_grid.h.

template<typename T>
double distance_field::VoxelGrid< T >::origin_minus_[3] [protected]

origin - 0.5/resolution

Definition at line 297 of file voxel_grid.h.

template<typename T>
double distance_field::VoxelGrid< T >::resolution_ [protected]

The resolution of each dimension in meters (in Dimension order)

Definition at line 294 of file voxel_grid.h.

template<typename T>
double distance_field::VoxelGrid< T >::size_[3] [protected]

The size of each dimension in meters (in Dimension order)

Definition at line 293 of file voxel_grid.h.

template<typename T>
int distance_field::VoxelGrid< T >::stride1_ [protected]

The step to take when stepping between consecutive X members in the 1D array.

Definition at line 300 of file voxel_grid.h.

template<typename T>
int distance_field::VoxelGrid< T >::stride2_ [protected]

The step to take when stepping between consecutive Y members given an X in the 1D array.

Definition at line 301 of file voxel_grid.h.


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


moveit_core
Author(s): Ioan Sucan , Sachin Chitta , Acorn Pooley
autogenerated on Tue Feb 20 2018 03:44:49