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OpenVDB
4.0.2
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Accelerated closest surface point queries for narrow band level sets. More...
#include <VolumeToSpheres.h>
Public Types | |
| using | TreeT = typename GridT::TreeType |
| using | BoolTreeT = typename TreeT::template ValueConverter< bool >::Type |
| using | Index32TreeT = typename TreeT::template ValueConverter< Index32 >::Type |
| using | Int16TreeT = typename TreeT::template ValueConverter< Int16 >::Type |
Public Member Functions | |
| ClosestSurfacePoint () | |
| template<typename InterrupterT = util::NullInterrupter> | |
| bool | initialize (const GridT &grid, float isovalue=0.0, InterrupterT *interrupter=nullptr) |
| Extract surface points and construct a spatial acceleration structure. More... | |
| bool | search (const std::vector< Vec3R > &points, std::vector< float > &distances) |
| Compute the distance from each input point to its closest surface point. More... | |
| bool | searchAndReplace (std::vector< Vec3R > &points, std::vector< float > &distances) |
| Overwrite each input point with its closest surface point. More... | |
| const Index32TreeT & | indexTree () const |
| Tree accessor. More... | |
| const Int16TreeT & | signTree () const |
| Tree accessor. More... | |
Accelerated closest surface point queries for narrow band level sets.
Supports queries that originate at arbitrary world-space locations, is not confined to the narrow band region of the input volume geometry.
| using BoolTreeT = typename TreeT::template ValueConverter<bool>::Type |
| using Index32TreeT = typename TreeT::template ValueConverter<Index32>::Type |
| using Int16TreeT = typename TreeT::template ValueConverter<Int16>::Type |
| using TreeT = typename GridT::TreeType |
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inline |
Tree accessor.
| bool initialize | ( | const GridT & | grid, |
| float | isovalue = 0.0, |
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| InterrupterT * | interrupter = nullptr |
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| ) |
Extract surface points and construct a spatial acceleration structure.
false if the initialization fails for any reason.| grid | a scalar level set or fog volume |
| isovalue | the voxel value that determines the surface of the volume The default value of zero works for signed distance fields, while fog volumes require a larger positive value (0.5 is a good initial guess). |
| interrupter | pointer to an object adhering to the util::NullInterrupter interface. |
| bool search | ( | const std::vector< Vec3R > & | points, |
| std::vector< float > & | distances | ||
| ) |
Compute the distance from each input point to its closest surface point.
| points | input list of points in world space |
| distances | output list of closest surface point distances |
| bool searchAndReplace | ( | std::vector< Vec3R > & | points, |
| std::vector< float > & | distances | ||
| ) |
Overwrite each input point with its closest surface point.
| points | input/output list of points in world space |
| distances | output list of closest surface point distances |
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inline |
Tree accessor.
1.8.13