VelocitySampler< GridT, Staggered, Order > Class Template Reference

#include <openvdb/tools/VelocityFields.h>

Public Types
typedef GridT::ConstAccessor	AccessorType
typedef GridT::ValueType	ValueType

Public Member Functions
	VelocitySampler (const GridT &grid)
	Constructor from a grid. More...
	VelocitySampler (const VelocitySampler &other)
	Copy-constructor. More...
template<typename LocationType >
bool	sample (const LocationType &world, ValueType &result) const
	Samples the velocity at world position onto result. Supports both staggered (i.e. MAC) and collocated velocity grids. More...
template<typename LocationType >
ValueType	sample (const LocationType &world) const
	Samples the velocity at world position onto result. Supports both staggered (i.e. MAC) and co-located velocity grids. More...

Detailed Description

template<typename GridT = Vec3fGrid, bool Staggered = false, size_t Order = 1>
class openvdb::v9_0::tools::VelocitySampler< GridT, Staggered, Order >

Class to hold a Vec3 field interpreted as a velocity field. Primarily exists to provide a method(s) that integrate a passive point forward in the velocity field for a single time-step (dt)

Member Typedef Documentation

typedef GridT::ConstAccessor AccessorType

typedef GridT::ValueType ValueType

Constructor & Destructor Documentation

VelocitySampler ( const GridT &  grid )

inline

Constructor from a grid.

VelocitySampler ( const VelocitySampler< GridT, Staggered, Order > &  other )

inline

Copy-constructor.

Member Function Documentation

bool sample ( const LocationType &  world, ValueType &  result  ) const

inline

Samples the velocity at world position onto result. Supports both staggered (i.e. MAC) and collocated velocity grids.

Returns

true if any one of the sampled values is active.

Warning

Not threadsafe since it uses a ValueAccessor! So use one instance per thread (which is fine since its lightweight).

ValueType sample ( const LocationType &  world ) const

inline

Samples the velocity at world position onto result. Supports both staggered (i.e. MAC) and co-located velocity grids.

Warning

Not threadsafe since it uses a ValueAccessor! So use one instance per thread (which is fine since its lightweight).