IndexFilter.h File Reference

Index filters primarily designed to be used with a FilterIndexIter. More...

#include <openvdb/version.h>
#include <openvdb/Types.h>
#include <openvdb/math/Transform.h>
#include <openvdb/tools/Interpolation.h>
#include <openvdb/util/Assert.h>
#include "IndexIterator.h"
#include "AttributeArray.h"
#include "AttributeGroup.h"
#include "AttributeSet.h"
#include <random>
#include <numeric>
#include <unordered_map>

Go to the source code of this file.

Classes
class	ValueMaskFilter< On >
	Index filtering on active / inactive state of host voxel. More...
class	MultiGroupFilter
class	RandomLeafFilter< PointDataTreeT, RandGenT >
class	AttributeHashFilter< RandGenT, IntType >
class	LevelSetFilter< LevelSetGridT >
class	BBoxFilter
class	BinaryFilter< T1, T2, And >
struct	FilterTraits< T >
struct	FilterTraits< BBoxFilter >
struct	FilterTraits< LevelSetFilter< T > >
struct	FilterTraits< BinaryFilter< T0, T1, And > >

Namespaces
	openvdb
	openvdb::v12_0
	openvdb::v12_0::points

Typedefs
using	ActiveFilter = ValueMaskFilter< true >
using	InactiveFilter = ValueMaskFilter< false >

Detailed Description

Index filters primarily designed to be used with a FilterIndexIter.

Author

Dan Bailey

Filters must adhere to the interface described in the example below:

struct MyFilter
{
    // Return true when the filter has been initialized for first use
    bool initialized() { return true; }

    // Return index::ALL if all points are valid, index::NONE if no points are valid
    // and index::PARTIAL if some points are valid
    index::State state() { return index::PARTIAL; }

    // Return index::ALL if all points in this leaf are valid, index::NONE if no points
    // in this leaf are valid and index::PARTIAL if some points in this leaf are valid
    template <typename LeafT>
    index::State state(const LeafT&) { return index::PARTIAL; }

    // Resets the filter to refer to the specified leaf, all subsequent valid() calls
    // will be relative to this leaf until reset() is called with a different leaf.
    // Although a required method, many filters will provide an empty implementation if
    // there is no leaf-specific logic needed.
    template <typename LeafT> void reset(const LeafT&) { }

    // Returns true if the filter is valid for the supplied iterator
    template <typename IterT> bool valid(const IterT&) { return true; }
};