OpenVDB  5.2.0
Public Types | Public Member Functions | Static Public Attributes | Protected Attributes | Friends | List of all members
BoxStencil< GridT, IsSafe > Class Template Reference

#include <Stencils.h>

Inherits BaseStencil< BoxStencil< GridT, IsSafe >, GridT, IsSafe >.

Public Types

typedef GridT GridType
 
typedef GridT::TreeType TreeType
 
typedef GridT::ValueType ValueType
 
typedef tree::ValueAccessor< const TreeType, IsSafe > AccessorType
 
typedef std::vector< ValueTypeBufferType
 
typedef BufferType::iterator IterType
 

Public Member Functions

 BoxStencil (const GridType &grid)
 
template<int i, int j, int k>
unsigned int pos () const
 Return linear offset for the specified stencil point relative to its center. More...
 
bool intersects (const ValueType &isoValue=zeroVal< ValueType >()) const
 Return true if the center of the stencil intersects the. More...
 
ValueType interpolation (const math::Vec3< ValueType > &xyz) const
 Return the trilinear interpolation at the normalized position. More...
 
math::Vec3< ValueTypegradient (const math::Vec3< ValueType > &xyz) const
 Return the gradient in world space of the trilinear interpolation kernel. More...
 
void moveTo (const Coord &ijk)
 Initialize the stencil buffer with the values of voxel (i, j, k) and its neighbors. More...
 
void moveTo (const Coord &ijk, const ValueType &centerValue)
 Initialize the stencil buffer with the values of voxel (i, j, k) and its neighbors. The method also takes a value of the center element of the stencil, assuming it is already known. More...
 
void moveTo (const IterType &iter)
 Initialize the stencil buffer with the values of voxel (x, y, z) and its neighbors. More...
 
void moveTo (const Vec3< RealType > &xyz)
 Initialize the stencil buffer with the values of voxel (x, y, z) and its neighbors. More...
 
const ValueTypegetValue (unsigned int pos=0) const
 Return the value from the stencil buffer with linear offset pos. More...
 
const ValueTypegetValue () const
 Return the value at the specified location relative to the center of the stencil. More...
 
void setValue (const ValueType &value)
 Set the value at the specified location relative to the center of the stencil. More...
 
int size ()
 Return the size of the stencil buffer. More...
 
ValueType median () const
 Return the median value of the current stencil. More...
 
ValueType mean () const
 Return the mean value of the current stencil. More...
 
ValueType min () const
 Return the smallest value in the stencil buffer. More...
 
ValueType max () const
 Return the largest value in the stencil buffer. More...
 
const CoordgetCenterCoord () const
 Return the coordinates of the center point of the stencil. More...
 
const ValueTypegetCenterValue () const
 Return the value at the center of the stencil. More...
 
const GridTypegrid () const
 Return a const reference to the grid from which this stencil was constructed. More...
 
const AccessorTypeaccessor () const
 Return a const reference to the ValueAccessor associated with this Stencil. More...
 

Static Public Attributes

static const int SIZE = 8
 

Protected Attributes

const GridTypemGrid
 
AccessorType mCache
 
BufferType mStencil
 
Coord mCenter
 

Friends

template<typename , typename , bool >
class BaseStencil
 

Member Typedef Documentation

typedef tree::ValueAccessor<const TreeType, IsSafe> AccessorType
inherited
typedef std::vector<ValueType> BufferType
inherited
typedef GridT GridType
typedef BufferType::iterator IterType
inherited
typedef GridT::TreeType TreeType
typedef GridT::ValueType ValueType

Constructor & Destructor Documentation

BoxStencil ( const GridType grid)
inline

Member Function Documentation

const AccessorType& accessor ( ) const
inlineinherited

Return a const reference to the ValueAccessor associated with this Stencil.

const Coord& getCenterCoord ( ) const
inlineinherited

Return the coordinates of the center point of the stencil.

const ValueType& getCenterValue ( ) const
inlineinherited

Return the value at the center of the stencil.

const ValueType& getValue ( unsigned int  pos = 0) const
inlineinherited

Return the value from the stencil buffer with linear offset pos.

Note
The default (pos = 0) corresponds to the first element which is typically the center point of the stencil.
const ValueType& getValue ( ) const
inlineinherited

Return the value at the specified location relative to the center of the stencil.

math::Vec3<ValueType> gradient ( const math::Vec3< ValueType > &  xyz) const
inline

Return the gradient in world space of the trilinear interpolation kernel.

Parameters
xyzFloating point coordinate position.
Warning
It is assumed that the stencil has already been moved to the relevant voxel position, e.g. using moveTo(xyz).
Note
Computed as partial derivatives of the trilinear interpolation kernel: v000 (1-u)(1-v)(1-w) + v001 (1-u)(1-v)w + v010 (1-u)v(1-w) + v011 (1-u)vw
  • v100 u(1-v)(1-w) + v101 u(1-v)w + v110 uv(1-w) + v111 uvw
const GridType& grid ( ) const
inlineinherited

Return a const reference to the grid from which this stencil was constructed.

ValueType interpolation ( const math::Vec3< ValueType > &  xyz) const
inline

Return the trilinear interpolation at the normalized position.

Parameters
xyzFloating point coordinate position.
Warning
It is assumed that the stencil has already been moved to the relevant voxel position, e.g. using moveTo(xyz).
Note
Trilinear interpolation kernal reads as: v000 (1-u)(1-v)(1-w) + v001 (1-u)(1-v)w + v010 (1-u)v(1-w) + v011 (1-u)vw
  • v100 u(1-v)(1-w) + v101 u(1-v)w + v110 uv(1-w) + v111 uvw
bool intersects ( const ValueType isoValue = zeroVal<ValueType>()) const
inline

Return true if the center of the stencil intersects the.

iso-contour specified by the isoValue

ValueType max ( ) const
inlineinherited

Return the largest value in the stencil buffer.

ValueType mean ( ) const
inlineinherited

Return the mean value of the current stencil.

ValueType median ( ) const
inlineinherited

Return the median value of the current stencil.

ValueType min ( ) const
inlineinherited

Return the smallest value in the stencil buffer.

void moveTo ( const Coord ijk)
inlineinherited

Initialize the stencil buffer with the values of voxel (i, j, k) and its neighbors.

Parameters
ijkIndex coordinates of stencil center
void moveTo ( const Coord ijk,
const ValueType centerValue 
)
inlineinherited

Initialize the stencil buffer with the values of voxel (i, j, k) and its neighbors. The method also takes a value of the center element of the stencil, assuming it is already known.

Parameters
ijkIndex coordinates of stnecil center
centerValueValue of the center element of the stencil
void moveTo ( const IterType iter)
inlineinherited

Initialize the stencil buffer with the values of voxel (x, y, z) and its neighbors.

Note
This version is slightly faster than the one above, since the center voxel's value is read directly from the iterator.
void moveTo ( const Vec3< RealType > &  xyz)
inlineinherited

Initialize the stencil buffer with the values of voxel (x, y, z) and its neighbors.

Parameters
xyzFloating point voxel coordinates of stencil center

This method will check to see if it is necessary to update the stencil based on the cached index coordinates of the center point.

unsigned int pos ( ) const
inline

Return linear offset for the specified stencil point relative to its center.

void setValue ( const ValueType value)
inlineinherited

Set the value at the specified location relative to the center of the stencil.

int size ( )
inlineinherited

Return the size of the stencil buffer.

Friends And Related Function Documentation

friend class BaseStencil
friend

Member Data Documentation

AccessorType mCache
protectedinherited
Coord mCenter
protectedinherited
const GridType* mGrid
protectedinherited
BufferType mStencil
protectedinherited
const int SIZE = 8
static

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