TriangulationHelpers

Collection of functions and structures needed for PointCloud triangulation . More...

Classes
struct	MR::TriangulationHelpers::TriangulatedFanData
	Data with caches for optimizing fan triangulation. More...

Functions
MRMESH_API float	MR::TriangulationHelpers::updateNeighborsRadius (const VertCoords &points, VertId v, VertId boundaryV, const std::vector< VertId > &fan, float baseRadius)
	Finds max radius of neighbors search, for possible better local triangulation.
MRMESH_API void	MR::TriangulationHelpers::findNeighborsInBall (const PointCloud &pointCloud, VertId v, float radius, std::vector< VertId > &neighbors)
	Finds all neighbors of v in given radius (v excluded)
MRMESH_API float	MR::TriangulationHelpers::findNumNeighbors (const PointCloud &pointCloud, VertId v, int numNeis, std::vector< VertId > &neighbors, FewSmallest< PointsProjectionResult > &tmp, float upDistLimitSq=FLT_MAX)
	Finds at most given number of neighbors of v (v excluded)
MRMESH_API void	MR::TriangulationHelpers::filterNeighbors (const VertNormals &orientedNormals, const VertBitSet *untrustedNormals, VertId v, std::vector< VertId > &neighbors)
	Filter neighbors with crossing normals.
MRMESH_API bool	MR::TriangulationHelpers::isBoundaryPoint (const PointCloud &cloud, VertId v, const Settings &settings, TriangulatedFanData &fanData)
	Checks if given vertex is on boundary of the point cloud, by constructing local triangulation around it.

Detailed Description

Collection of functions and structures needed for PointCloud triangulation .

Function Documentation

filterNeighbors()

MRMESH_API void MR::TriangulationHelpers::filterNeighbors	(	const VertNormals &	orientedNormals,
		const VertBitSet *	untrustedNormals,
		VertId	v,
		std::vector< VertId > &	neighbors )

#include <MRPointCloudTriangulationHelpers.h>

Filter neighbors with crossing normals.

findNeighborsInBall()

MRMESH_API void MR::TriangulationHelpers::findNeighborsInBall	(	const PointCloud &	pointCloud,
		VertId	v,
		float	radius,
		std::vector< VertId > &	neighbors )

#include <MRPointCloudTriangulationHelpers.h>

Finds all neighbors of v in given radius (v excluded)

findNumNeighbors()

MRMESH_API float MR::TriangulationHelpers::findNumNeighbors	(	const PointCloud &	pointCloud,
		VertId	v,
		int	numNeis,
		std::vector< VertId > &	neighbors,
		FewSmallest< PointsProjectionResult > &	tmp,
		float	upDistLimitSq = FLT_MAX )

#include <MRPointCloudTriangulationHelpers.h>

Finds at most given number of neighbors of v (v excluded)

Parameters

tmp	temporary storage to avoid its allocation
upDistLimitSq	upper limit on the distance in question, points with larger distance than it will not be returned

Returns

maxDistSq to the furthest returned neighbor (or 0 if no neighbours are returned)

isBoundaryPoint()

MRMESH_API bool MR::TriangulationHelpers::isBoundaryPoint ( const PointCloud & cloud, VertId v, const Settings & settings, TriangulatedFanData & fanData )

nodiscard

#include <MRPointCloudTriangulationHelpers.h>

Checks if given vertex is on boundary of the point cloud, by constructing local triangulation around it.

Parameters

cloud	input point cloud
v	vertex id to check
settings	all parameters of the computation
fanData	cache structure for neighbors, not to allocate for multiple calls

Returns

true if vertex is boundary, false otherwise

updateNeighborsRadius()

MRMESH_API float MR::TriangulationHelpers::updateNeighborsRadius	(	const VertCoords &	points,
		VertId	v,
		VertId	boundaryV,
		const std::vector< VertId > &	fan,
		float	baseRadius )

#include <MRPointCloudTriangulationHelpers.h>

Finds max radius of neighbors search, for possible better local triangulation.

Parameters

borderV	first boundary vertex in
fan	(next VertId in fan is also boundary but first is enough)