Geodesic Class Reference

Geodesic Shape (generic class). More...

#include <Geodesic.h>

Inheritance diagram for Geodesic:

List of all members.

Public Member Functions
	Geodesic (int frequency, bool class_2)
	Geodesic constructor.
	~Geodesic ()
	Geodesic destructor.
void	dumpData ()
	This function dumps in a log file, all topological data concerning the geodesic shape.
void	createDXFwireframe (String filename)
	This function saves the chord data for symmetry triangle to a DXF file.
void	createDXF (String filename)
	This function saves the Face data for symmetry triangle to DXF file.
Protected Member Functions
void	createTopology ()
	This function calculates the number of vertices & triangles in a face.
void	calculateSphericalCoord ()
	This function calculates the spherical coordinates for a geodesic sphere.
long	getFaceNumber ()
	This function returns the number of basic faces per sphere.
double	getChordLength (double sphi, double stheta, double ephi, double etheta)
	This function returns the distance between two points given their spherical coordinates.
void	chord_factor ()
	This function calculates the chord factors.
void	face_factor ()
	This function calculates the face factors.
double	cleanFloat (double fp_number)
	This function clean floating point numbers (close to but not quite zero).
double	rotate_phi (double, double, double, double)
	phi rotation function
double	rotate_theta (double, double, double, double)
	theta rotation function
double	axial_angle_A (long index)
	Determine Axial Angle A.
double	axial_angle_B (long index, double angleA)
	Determine Axial Angle B.
double	face_angle_A (long index)
	Determine Face Angle A.
double	face_angle_B (long, double)
	Determine Face Angle B.
double	face_angle_C (double, double)
	This function calculates the face angle C from face angles A & B.
Vector3	SphericalToCartesian (CPoints *PolarPoint)
	This function converts Spherical Coordinates to Cartesian Coordinates.
Protected Attributes
CPoints *	mPoints
	All the points of a face.
CPoints *	mSphericPoints
	All the points of a face.
CLabels *	mPointLabels
	Dynamic array for point's labels.
CChords *	mEdges
	Dynamic array for all the edges of a face.
CFaces *	mTriangles
	Dynamic array for all triangles of a face.

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Detailed Description

Geodesic Shape (generic class).

Geodesic shapes can be theorically based on an assembly of triangles, of pentagons (5 sides) or of hexagons (6 sides). Here, we will use only geodesic shapes based on triangles, as it is for 'trimesh' creation. The elementary shape (frequency=1) is the Icosahedron, an assembly of 20 triangles (with 12 points). Note that the function getFacePoints()has to be implemented in derived classes.

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Constructor & Destructor Documentation

Geodesic::Geodesic (  int  frequency, bool  class_2 )

Geodesic constructor. The constructor handles all calculation when an instance is called. Parameters: frequency  The frequency of subdivision (best values: 1 to 10) class_2  The class (1 or 2) of the geodesic shape

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Member Function Documentation

void Geodesic::chord_factor (   )  [protected]

This function calculates the chord factors. The function cycles through each vertex, and determines the chord connections.

void Geodesic::face_factor (   )  [protected]

This function calculates the face factors. This function cycles through each vertex and determines the face definitions essentially going CCW about the face.

double Geodesic::getChordLength (  double  sphi, double  stheta, double  ephi, double  etheta )  [protected]

This function returns the distance between two points given their spherical coordinates. Radius is fixed at 1. Parameters: sphi  Phi-coordinate of the first point (S). stheta  Theta-coordinate of the first point (S). ephi  Phi-coordinate of the second point (E). etheta  Theta-coordinate of the second point (E). Returns: The distance between S and E.

Vector3 Geodesic::SphericalToCartesian (  CPoints *  PolarPoint  )  [protected]

This function converts Spherical Coordinates to Cartesian Coordinates. Parameters: PolarPoint  A point in polar coordinates Returns: The cartesian coordinates of the same point

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The documentation for this class was generated from the following files:

• E:/sphinx/archives/Geometrik/Geodesic.h
• E:/sphinx/archives/Geometrik/Geodesic.cpp

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