Field3D
Sparse::CheckAllEqual< Data_T > Struct Template Reference

Checks if all the values in the SparseBlock are equal. Used by SparseField::releaseBlocks(). More...

#include <SparseField.h>

Public Member Functions

bool check (const SparseBlock< Data_T > &block, Data_T &retEmptyValue, const V3i &validSize, const V3i &blockSize)
 Checks whether a given block can be released. It's safe to assume that the block is allocated if this functor is called. More...
 

Detailed Description

template<typename Data_T>
struct Sparse::CheckAllEqual< Data_T >

Checks if all the values in the SparseBlock are equal. Used by SparseField::releaseBlocks().

Definition at line 710 of file SparseField.h.

Member Function Documentation

◆ check()

template<typename Data_T >
bool Sparse::CheckAllEqual< Data_T >::check ( const SparseBlock< Data_T > &  block,
Data_T &  retEmptyValue,
const V3i validSize,
const V3i blockSize 
)
inline

Checks whether a given block can be released. It's safe to assume that the block is allocated if this functor is called.

Parameters
blockReference to the block to check
retEmptyValueIf the block is to be removed, store the "empty value" that replaces it in this variable
validSizeNumber of voxels per dim within field data window
blockSizeNumber of voxels actually allocated per dim
Returns
Whether or not the supplied block can be released.

Definition at line 720 of file SparseField.h.

722  {
723  // Store first value
724  Data_T first = block.data[0];
725  // Iterate over rest
726  bool match = true;
727  size_t len = blockSize.x * blockSize.y * blockSize.z;
728  if (validSize == blockSize) {
729  // interior block so look at all voxels
730  for (size_t i = 0; i < len; i++) {
731  if (block.data[i] != first) {
732  match = false;
733  break;
734  }
735  }
736  } else {
737  // only look at valid voxels
738  int x=0, y=0, z=0;
739  for (size_t i = 0; i < len; i++, x++) {
740  if (x >= blockSize.x) {
741  x = 0;
742  ++y;
743  if (y >= blockSize.y) {
744  y = 0;
745  ++z;
746  }
747  }
748  if (x >= validSize.x || y >= validSize.y || z >= validSize.z) {
749  continue;
750  }
751  if (block.data[i] != first) {
752  match = false;
753  break;
754  }
755  }
756  } // end of interior block test
757 
758  if (match) {
759  retEmptyValue = first;
760  return true;
761  } else {
762  return false;
763  }
764  }

References Sparse::SparseBlock< Data_T >::data, and match().


The documentation for this struct was generated from the following file:
match
bool match(const std::string &name, const std::string &attribute, const std::vector< std::string > &patterns, const MatchFlags flags=MatchEmptyPattern)
Matches a <name>:<attribute> string against a set of patterns.
Definition: PatternMatch.cpp:102