Skip to main content

GeometryInfo

Namespace: DISP3DLIB  ·  Library: 3D Display Library

#include <disp3D/geometryinfo.h>

class DISP3DLIB::GeometryInfo

This class allows sensor-to-mesh mapping and calculation of surface constrained distances.

This class holds static methods for sensor-to-mesh mapping and surface constrained distance calculation on a mesh

Public Methods​

GeometryInfo()​

Static Methods​

scdc(matVertices, vecNeighborVertices, vecVertSubset, dCancelDist)​

scdc Calculates surface constrained distances on a mesh.

scdcInterpolationMat(matVertices, vecNeighborVertices, vecVertSubset, interpolationFunction, dCancelDist, progressCallback, cancelledFlag)​

scdcInterpolationMat Computes geodesic distances (SCDC) and builds the sparse interpolation matrix in a single pass, without allocating a dense nVertices x nSources distance table.

Produces identical results to scdc() + Interpolation::createInterpolationMat() but uses dramatically less memory (sparse representation only stores entries within cancelDist).

Parameters:

  • matVertices : const Eigen::MatrixX3f & Vertex positions (nVertices x 3).

  • vecNeighborVertices : const std::vector< Eigen::VectorXi > & Adjacency list for each vertex.

  • vecVertSubset : const Eigen::VectorXi & Source vertex indices.

  • interpolationFunction : double()(double)* Weight function (e.g. Interpolation::cubic).

  • dCancelDist : double Maximum geodesic distance for interpolation.

  • progressCallback : std::function< void(int, int)> Optional callback reporting Dijkstra progress (current, total).

  • cancelledFlag : *const std::atomic< bool > ** Optional pointer to an atomic bool; when set to true the computation aborts early.

Returns:

  • QSharedPointer< Eigen::SparseMatrix< float > > — Sparse interpolation matrix (nVertices x nSources), or empty matrix if cancelled.

projectSensors(matVertices, matSensorPositions)​

projectSensors Calculates the nearest neighbor vertex to each sensor.

filterBadChannels(matDistanceTable, fiffInfo, iSensorType)​

filterBadChannels Filters bad channels from distance table.

Authors of this file​