su2_lut Namespace Reference

Classes
struct	TrapezoidalMap

Typedefs
using	IntT = int32_t
using	RealT = su2double
template<size_t N>
using	MatrixNi = C2DContainer< unsigned long, IntT, StorageType::RowMajor, 64, DynamicSize, N >
using	Matrix2i = MatrixNi< 2 >
using	Matrix3i = MatrixNi< 3 >
using	VectorInt = std::vector< IntT >
using	VectorReal = std::vector< RealT >

Functions
void	ReorderPoints (Matrix3i &triangles, VectorReal &x, VectorReal &y)
	Orders points by ascending x coordinates and updates triangle indices.
void	ExtractEdges (const Matrix3i &triangles, Matrix2i &edge_pts, Matrix2i &edge_faces)
	Extracts unique edges from triangles. Edges are defined by two point IDs and up to two adjacent triangles (boundary edges have the second triangle ID < 0).
auto	DetectBands (const VectorReal &x, IntT max_bands=0)
	Detects the x bands of the map. One band per unique x coordinate is used unless that would exceed max_bands, in which case equal-width bands are used to limit memory.
void	BuildTrapezoidalMap (const Matrix2i &edge_pts, const VectorReal &x, const VectorReal &y, TrapezoidalMap &map)
	Builds the trapezoidal map for a set of edges (points must be ordered by x).
auto	QueryTrapezoidalMap (const TrapezoidalMap &map, const Matrix2i &edge_pts, const VectorReal &x_coords, const VectorReal &y_coords, const RealT &x, const RealT &y)
	Returns the IDs of the edges directly below and above a query point (either ID can be -1 if the point is at a boundary).
auto	AdjacentTriangles (const IntT edge_0, const IntT edge_1, const Matrix2i &edge_faces)
	Returns the IDs of the triangles adjacent to two query edges (up to 3 triangles).
auto	TriangleCoords (const IntT i_tri, const Matrix3i &triangles, const VectorReal &x, const VectorReal &y, const RealT x_q, const RealT y_q)
	Computes the barycentric coordinates of point (x_q, y_q) in a triangle.
bool	InTriangle (const std::array< RealT, 3 > &coords, const RealT tol=0.0)
	Checks if a point is inside a triangle based on its barycentric coordinates.
IntT	FindTriangle (const TrapezoidalMap &map, const Matrix3i &triangles, const Matrix2i &edge_pts, const Matrix2i &edge_faces, const VectorReal &x, const VectorReal &y, const RealT x_q, const RealT y_q, std::array< RealT, 3 > &bary_out)
	Finds the triangle containing a point using the trapezoidal map.

Typedef Documentation

IntT

using su2_lut::IntT = typedef int32_t

Matrix2i

using su2_lut::Matrix2i = typedef MatrixNi<2>

Matrix3i

using su2_lut::Matrix3i = typedef MatrixNi<3>

MatrixNi

template<size_t N>

using su2_lut::MatrixNi = typedef C2DContainer<unsigned long, IntT, StorageType::RowMajor, 64, DynamicSize, N>

RealT

using su2_lut::RealT = typedef su2double

VectorInt

using su2_lut::VectorInt = typedef std::vector<IntT>

VectorReal

using su2_lut::VectorReal = typedef std::vector<RealT>

Function Documentation

AdjacentTriangles()

auto su2_lut::AdjacentTriangles ( const IntT  edge_0, const IntT  edge_1, const Matrix2i &  edge_faces  )

inline

Returns the IDs of the triangles adjacent to two query edges (up to 3 triangles).

BuildTrapezoidalMap()

void su2_lut::BuildTrapezoidalMap ( const Matrix2i &  edge_pts, const VectorReal &  x, const VectorReal &  y, TrapezoidalMap &  map  )

inline

Builds the trapezoidal map for a set of edges (points must be ordered by x).

DetectBands()

auto su2_lut::DetectBands ( const VectorReal &  x, IntT  max_bands = 0  )

inline

Detects the x bands of the map. One band per unique x coordinate is used unless that would exceed max_bands, in which case equal-width bands are used to limit memory.

Returns

Tuple of (n_bands, x_bands).

ExtractEdges()

void su2_lut::ExtractEdges ( const Matrix3i &  triangles, Matrix2i &  edge_pts, Matrix2i &  edge_faces  )

inline

Extracts unique edges from triangles. Edges are defined by two point IDs and up to two adjacent triangles (boundary edges have the second triangle ID < 0).

FindTriangle()

IntT su2_lut::FindTriangle ( const TrapezoidalMap &  map, const Matrix3i &  triangles, const Matrix2i &  edge_pts, const Matrix2i &  edge_faces, const VectorReal &  x, const VectorReal &  y, const RealT  x_q, const RealT  y_q, std::array< RealT, 3 > &  bary_out  )

inline

Finds the triangle containing a point using the trapezoidal map.

InTriangle()

bool su2_lut::InTriangle ( const std::array< RealT, 3 > &  coords, const RealT  tol = 0.0  )

inline

Checks if a point is inside a triangle based on its barycentric coordinates.

QueryTrapezoidalMap()

auto su2_lut::QueryTrapezoidalMap ( const TrapezoidalMap &  map, const Matrix2i &  edge_pts, const VectorReal &  x_coords, const VectorReal &  y_coords, const RealT &  x, const RealT &  y  )

inline

Returns the IDs of the edges directly below and above a query point (either ID can be -1 if the point is at a boundary).

ReorderPoints()

void su2_lut::ReorderPoints ( Matrix3i &  triangles, VectorReal &  x, VectorReal &  y  )

inline

Orders points by ascending x coordinates and updates triangle indices.

TriangleCoords()

auto su2_lut::TriangleCoords ( const IntT  i_tri, const Matrix3i &  triangles, const VectorReal &  x, const VectorReal &  y, const RealT  x_q, const RealT  y_q  )

inline

Computes the barycentric coordinates of point (x_q, y_q) in a triangle.