Dune::GenericGeometry::DefaultGeometryTraits< ctype, dimG, dimW, alwaysAffine > Struct Template Reference

default settings for BasicGeometry More...

#include <dune/geometry/genericgeometry/geometrytraits.hh>

Classes
struct	Caching
	specifies how constant values are to be cached More...
struct	hasSingleGeometryType
	will there be only one geometry type for a dimension? More...
struct	Mapping
	specifies the reference mapping to be used More...
struct	UserData
	type of additional user data to be stored in each mapping More...

Public Types
typedef DuneCoordTraits< ctype >	CoordTraits
	types needed in matrix-vector operations

Static Public Attributes
static const int	dimWorld = dimW
	dimension of the world

Detailed Description

template<class ctype, int dimG, int dimW, bool alwaysAffine = false>
struct Dune::GenericGeometry::DefaultGeometryTraits< ctype, dimG, dimW, alwaysAffine >

default settings for BasicGeometry

The class BasicGeometry requires a template argument Traits. These traits specify which reference mapping shall be used by the geometry and tweaks some performance settings.

This default implementation serves two purposed. Firstly, it documents the expected parameters. Secondly, the user of BasicGeometry can derive his traits class from DefaultGeometryTraits. Then, only the non-default settings have to be specified. Moreover, deriving from DefaultGeometryTraits makes the user code more robust to changes in the generic geometries.

Note

DefaultGeometryTraits can directly be used for the Traits argument of BasicGeometry.

Template Parameters

ctype	Type used for coordinate coefficients
dimG	Dimension of the grid (note: This template parameter exists for backward-compatibility only. It is not used anywhere.)
dimW	Dimension of the range space of this geometry
alwaysAffine	Set to true if geometry is always affine (enables a few optimizations)

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

• dune/geometry/genericgeometry/geometrytraits.hh