GEOM_FADE2D::FadeExport Struct Reference

FadeExport is a simple struct to export triangulation data. More...

#include <FadeExport.h>

Public Member Functions
	FadeExport ()
	Default constructor.
	FadeExport (const FadeExport &other)
	Copy constructor.
	~FadeExport ()
	Destructor.
void	copy (const FadeExport &other)
	A copy function. More...
void	extractTriangleNeighborships (std::vector< std::pair< int, int > > &vNeigs) const
	Extracts triangle adjacencies. More...
void	getCoordinates (int vtxIdx, double &x, double &y) const
	Get the coorinates for a certain vertex index. More...
void	getCornerIndices (int triIdx, int &vtxIdx0, int &vtxIdx1, int &vtxIdx2) const
	Get the corner indices of a certain triangle. More...
int	getCustomIndex (int vtxIdx) const
	Get the custom vertex index. More...
void	lexiSort ()
	Lexicographically sorts the points. More...
FadeExport &	operator= (const FadeExport &other)
	Assignment operator.
bool	operator== (const FadeExport &other) const
void	print () const
	Prints the data for demonstration purposes. More...
void	reset ()
	Resets the object. More...
bool	writeObj (const char *filename) const
	Writes the triangulation data to a .obj file. More...

Public Attributes
double *	aCoords
	Cartesian coordinates (dim*numPoints)
int *	aCustomIndices
	Custom indices of the points (only when exported)
int *	aTriangles
	3 counterclockwise oriented vertex-indices per triangle (3*numTriangles)
int	dim
	Dimension.
int	numCustomIndices
	number of custom indices (same as numPoints when exported, otherwise 0)
int	numPoints
	number of points
int	numTriangles
	number of triangles

Detailed Description

This data structure is designed to get data out of Fade easily and memory efficiently using only basic data types.

Note

The important source code for this struct is implemented in the FadeExport.h file, allowing users to adapt the code for their own needs.

See also

https://www.geom.at/triangulation-export/ This article describes exporting triangulations.

Member Function Documentation

copy()

void GEOM_FADE2D::FadeExport::copy ( const FadeExport &  other )

inline

Copies the other FadeExport struct to the current one.

Parameters

other

Another FadeExport struct to copy from

extractTriangleNeighborships()

void GEOM_FADE2D::FadeExport::extractTriangleNeighborships ( std::vector< std::pair< int, int > > &  vNeigs ) const

inline

This method extracts the adjacency relationships between triangles by identifying which triangles share an edge. It populates the provided vector with pairs of adjacent triangle indices.

Parameters

vNeigs

A vector that will be populated with pairs of adjacent triangle indices.

getCoordinates()

void GEOM_FADE2D::FadeExport::getCoordinates ( int  vtxIdx, double &  x, double &  y  ) const

inline

Parameters

vtxIdx	[in] vertex index
x,y	[out] coordinates

getCornerIndices()

void GEOM_FADE2D::FadeExport::getCornerIndices ( int  triIdx, int &  vtxIdx0, int &  vtxIdx1, int &  vtxIdx2  ) const

inline

Parameters

triIdx	[in] triangle index
vtxIdx0,vtxIdx1,vtxIdx2	[out] corner indices

getCustomIndex()

int GEOM_FADE2D::FadeExport::getCustomIndex ( int  vtxIdx ) const

inline

Returns

the (optional) custom index of the vertex with the index vtxIdx or -1 if the vertex indices have not been exported.

lexiSort()

void GEOM_FADE2D::FadeExport::lexiSort

(

)

This method sorts the points in lexicographical order for better reproducibility. It is mainly used for consistent output in tests or exports.

print()

void GEOM_FADE2D::FadeExport::print ( ) const

inline

Prints the points, triangles, and their adjacency relationships for inspection.

reset()

void GEOM_FADE2D::FadeExport::reset ( )

inline

Deletes all dynamically allocated data and resets the number of points, triangles, and custom indices to 0.

writeObj()

bool GEOM_FADE2D::FadeExport::writeObj ( const char *  filename ) const

inline

This method exports the triangulation to the popular .obj file format, which is supported by most 3D viewers.

Parameters

filename

The name of the file to write to.

Returns

true if the file was successfully written, false otherwise.

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The documentation for this struct was generated from the following file:

• FadeExport.h