ChartDomain_IDs Struct Reference

#include <F5Bchart.h>

Data Fields
const char *	domain_name
unsigned	refs
int	perm_vector [FIBER_MAX_RANK]
int	cell_dimensionality
F5_ChartPrecisionTypes	OneBytePrecision
F5_ChartPrecisionTypes	HalfPrecision
F5_ChartPrecisionTypes	SinglePrecision
F5_ChartPrecisionTypes	DoublePrecision
F5_ChartPrecisionTypes	ExtendedPrecision
F5Ttensor_t **	TensorTypes

Detailed Description

Description of a class of coordinate systems, i.e. coordinate system that are allowed to share their positional types.

Field Documentation

domain_name

const char* ChartDomain_IDs::domain_name

name for this class of coordinate systems (e.g. cartesian 3D, polar 2D, ...)

Referenced by F5Binitialize_path().

DoublePrecision

F5_ChartPrecisionTypes ChartDomain_IDs::DoublePrecision

8 Byte, 64 bit

ExtendedPrecision

F5_ChartPrecisionTypes ChartDomain_IDs::ExtendedPrecision

16 Byte, 128 bit

HalfPrecision

F5_ChartPrecisionTypes ChartDomain_IDs::HalfPrecision

2 Byte, 16 bit

OneBytePrecision

F5_ChartPrecisionTypes ChartDomain_IDs::OneBytePrecision

1 Byte, 8 bit

perm_vector

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).

Referenced by F5Fcreate().

refs

unsigned ChartDomain_IDs::refs

reference counter

SinglePrecision

F5_ChartPrecisionTypes ChartDomain_IDs::SinglePrecision

4 Byte, 32 bit

Referenced by F5Cwrite_regular_surface(), F5Cwrite_triangular_surface(), F5Flink_triangular_surface(), and F5Rcreate_rectilinear().

TensorTypes

F5Ttensor_t** ChartDomain_IDs::TensorTypes

Array of pointers to tensor type descriptions. Terminated by NULL pointer;

---

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

• F5Bchart.h