ChartDomain_IDs Struct Reference

Description of a class of coordinate systems, i.e. More...

#include <F5Bchart.h>

List of all members.

Public Attributes

• const char * domain_name

  name for this class of coordinate systems (e.g.
  

• unsigned refs

  reference counter
  

• int perm_vector [FIBER_MAX_RANK]

  Each type of coordinate system is associated with a certain ordering of multidimensional data.
  

• int cell_dimensionality
• F5_ChartPrecisionTypes SinglePrecision
• F5_ChartPrecisionTypes DoublePrecision
• F5Ttensor_t ** TensorTypes

  Array of pointers to tensor type descriptions.
  

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Detailed Description

Description of a class of coordinate systems, i.e.

coordinate system that are allowed to share their positional types.

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Member Data Documentation

const char* ChartDomain_IDs::domain_name

name for this class of coordinate systems (e.g.

cartesian 3D, polar 2D, ...)

int ChartDomain_IDs::perm_vector[FIBER_MAX_RANK]

Each type of coordinate system is associated with a certain ordering of multidimensional data.

This is the place to specify whether FORTRAN or C order is used for multidimensional arrays.

Note:

The predefined F5 coordinate systems use FORTRAN order for compatibility with

• numerical simulation programs, which are mostly written in FORTRAN
• OpenGL, where the lowest dimension (x) runs fastest
• the Amira visualization system
• the canonical indexing of images, where the lowest dimension x runs faster than y This convention is reversed as compared to a native definition of a matrix using C arrays of the form

  		 float	matrix[X][Y];
  		 

  Here, the dimension Y would run faster in memory than X. If data are stored in this layout (C order), they have to be put into another coordinate system within the context of F5. Different indexing layouts can be mapped onto each other like a coordinate transformation rule. Such a mapping might be straightforward, but involves some computation (which is similar to true coordinate transformations).

F5Ttensor_t** ChartDomain_IDs::TensorTypes

Array of pointers to tensor type descriptions.

Terminated by NULL pointer;