GridTransformOp< Sampler > Class Template Reference

GridTransformOp is a functor class for use with GridBase::apply() that samples an input grid into an output grid of the same type through a given affine transform. More...

#include <openvdb_houdini/UT_VDBTools.h>

Public Member Functions
	GridTransformOp (GridPtr &outGrid, const openvdb::tools::GridTransformer &t)
template<typename GridType >
void	operator() (const GridType &inGrid)

Detailed Description

template<typename Sampler>
class openvdb_houdini::GridTransformOp< Sampler >

GridTransformOp is a functor class for use with GridBase::apply() that samples an input grid into an output grid of the same type through a given affine transform.

The output grid's transform is unchanged by this operation.

See also

GridResampleOp, GridResampleToMatchOp

Example:

const Grid& inGrid = ...; // generic reference to a grid of any type

// Create a new, empty output grid of the same (so far, unknown) type
// as the input grid and with the same transform and metadata.
GridPtr outGrid = inGrid.copyGridWithNewTree();

// Initialize a GridTransformer with the parameters of an affine transform.
openvdb::tools::GridTransformer xform(pivot, scale, rotate, ...);

// Resolve the input grid's type and resample it into the output grid,
// using a second-order sampling kernel.
GridTransformOp<openvdb::tools::QuadraticSampler> op(outGrid, xform);
inGrid.apply<openvdb_houdini::ScalarGridTypes>(op);

Constructor & Destructor Documentation

GridTransformOp ( GridPtr &  outGrid, const openvdb::tools::GridTransformer &  t  )

inline

Parameters

outGrid	a generic pointer to an output grid of the same type as the grid to be resampled
t	a GridTransformer that defines an affine transform

Note

GridTransformOp makes an internal copy of the GridTransformer and supplies the copy with a default Interrupter that replaces any existing interrupter.

Member Function Documentation

void operator() ( const GridType &  inGrid )

inline