Classes
struct	NoTimer

struct	PcaTimer

struct	AttrIndices

struct	PcaTransfer< PointDataTreeT >

struct	WeightPosSumsTransfer< PointDataTreeT >

struct	CovarianceTransfer< PointDataTreeT >

Namespaces
	openvdb

	openvdb::v12_1

	openvdb::v12_1::points

	openvdb::v12_1::points::pca_internal

Macros
#define	OPENVDB_PCA_SELF_CONTRIBUTION 1
	when enabled, prints timings for each substep of the PCA algorithm More...

Typedefs
using	TimerT = NoTimer

using	WeightSumT = double

using	WeightedPositionSumT = Vec3d

using	GroupIndexT = points::AttributeSet::Descriptor::GroupIndex

Functions
template<typename T , typename LeafNodeT >
T *	initPcaArrayAttribute (LeafNodeT &leaf, const size_t idx, const bool fill=true)

template<typename Scalar >
Vec3i	descendingOrder (math::Vec3< Scalar > &vector)
	Sort a vector into descending order and output a vector of the resulting order. More...

template<typename Scalar >
bool	decomposeSymmetricMatrix (const math::Mat3< Scalar > &mat, math::Mat3< Scalar > &U, math::Vec3< Scalar > &sigma)
	Decomposes a symmetric matrix into its eigenvalues and a rotation matrix of eigenvectors. Note that if mat is positive-definite, this will be equivalent to a singular value decomposition where V = U. More...

template<typename PointDataGridT >
void	pca (PointDataGridT &points, const PcaSettings &settings, const PcaAttributes &attrs)
	Calculate ellipsoid transformations from the local point distributions as described in Yu and Turk's 'Reconstructing Fluid Surfaces with Anisotropic Kernels'. The results are stored on the attributes pointed to by the PcaAttributes. See the PcaSettings and PcaAttributes structs for more details. More...

Macro Definition Documentation

#define OPENVDB_PCA_SELF_CONTRIBUTION 1

when enabled, prints timings for each substep of the PCA algorithm

Experimental option to skip storing the self weight for the weighted PCA when set to 0

Classes