TopAbs Class Reference

This package gives resources for Topology oriented applications such as : Topological Data Structure, Topological Algorithms. More...

#include <TopAbs.hxx>

Static Public Member Functions
static TopAbs_Orientation	Compose (const TopAbs_Orientation Or1, const TopAbs_Orientation Or2)
	Compose the Orientation <Or1> and <Or2>. This composition is not symmetric (if you switch <Or1> and <Or2> the result is different). It assumes that <Or1> is the Orientation of a Shape S1 containing a Shape S2 of Orientation Or2. The result is the cumulated orientation of S2 in S1. The composition law is : More...
static TopAbs_Orientation	Reverse (const TopAbs_Orientation Or)
	xchanges the interior/exterior status of the two sides. This is what happens when the sense of direction is reversed. The following rules apply: More...
static TopAbs_Orientation	Complement (const TopAbs_Orientation Or)
	Reverses the interior/exterior status of each side of the object. So, to take the complement of an object means to reverse the interior/exterior status of its boundary, i.e. inside becomes outside. The method returns the complementary orientation, following the rules in the table below: FORWARD REVERSED REVERSED FORWARD INTERNAL EXTERNAL EXTERNAL INTERNAL. More...
static Standard_OStream &	Print (const TopAbs_ShapeEnum SE, Standard_OStream &S)
	Prints the name of Shape <SEq> as a String on the Stream <S> and returns <S>. More...
static Standard_OStream &	Print (const TopAbs_Orientation Or, Standard_OStream &S)
	Prints the name of the Orientation <Or> as a String on the Stream <S> and returns <S>. More...
static Standard_OStream &	Print (const TopAbs_State St, Standard_OStream &S)
	Prints the name of the State <St> as a String on the Stream <S> and returns <S>. More...

Detailed Description

This package gives resources for Topology oriented applications such as : Topological Data Structure, Topological Algorithms.

It contains :

• The ShapeEnum enumeration to describe the differents topological shapes.
• The Orientation enumeration to describe the orientation of a topological shape.
• The State enumeration to describes the position of a point relative to a Shape.
• Methods to manage the enumerations.

Member Function Documentation

static TopAbs_Orientation TopAbs::Complement ( const TopAbs_Orientation  Or )

static

Reverses the interior/exterior status of each side of the object. So, to take the complement of an object means to reverse the interior/exterior status of its boundary, i.e. inside becomes outside. The method returns the complementary orientation, following the rules in the table below: FORWARD REVERSED REVERSED FORWARD INTERNAL EXTERNAL EXTERNAL INTERNAL.

Complement complements the material side. Inside becomes outside.

static TopAbs_Orientation TopAbs::Compose ( const TopAbs_Orientation  Or1, const TopAbs_Orientation  Or2  )

static

Compose the Orientation <Or1> and <Or2>. This composition is not symmetric (if you switch <Or1> and <Or2> the result is different). It assumes that <Or1> is the Orientation of a Shape S1 containing a Shape S2 of Orientation Or2. The result is the cumulated orientation of S2 in S1. The composition law is :

\ Or2 FORWARD REVERSED INTERNAL EXTERNAL Or1 ----------------------------------— FORWARD | FORWARD REVERSED INTERNAL EXTERNAL | REVERSED | REVERSED FORWARD INTERNAL EXTERNAL | INTERNAL | INTERNAL INTERNAL INTERNAL INTERNAL | EXTERNAL | EXTERNAL EXTERNAL EXTERNAL EXTERNAL Note: The top corner in the table is the most important for the purposes of Open CASCADE topology and shape sharing.

static Standard_OStream& TopAbs::Print ( const TopAbs_ShapeEnum  SE, Standard_OStream &  S  )

static

Prints the name of Shape <SEq> as a String on the Stream <S> and returns <S>.

static Standard_OStream& TopAbs::Print ( const TopAbs_Orientation  Or, Standard_OStream &  S  )

static

Prints the name of the Orientation <Or> as a String on the Stream <S> and returns <S>.

static Standard_OStream& TopAbs::Print ( const TopAbs_State  St, Standard_OStream &  S  )

static

Prints the name of the State <St> as a String on the Stream <S> and returns <S>.

static TopAbs_Orientation TopAbs::Reverse ( const TopAbs_Orientation  Or )

static

xchanges the interior/exterior status of the two sides. This is what happens when the sense of direction is reversed. The following rules apply:

FORWARD REVERSED REVERSED FORWARD INTERNAL INTERNAL EXTERNAL EXTERNAL

Reverse exchange the material sides.

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

• TopAbs.hxx