TopLoc_Datum3D Class Reference

Describes a coordinate transformation, i.e. a change to an elementary 3D coordinate system, or position in 3D space. A Datum3D is always described relative to the default datum. The default datum is described relative to itself: its origin is (0,0,0), and its axes are (1,0,0) (0,1,0) (0,0,1). More...

#include <TopLoc_Datum3D.hxx>

Inheritance diagram for TopLoc_Datum3D:

Public Member Functions
	TopLoc_Datum3D ()
	Constructs a default Datum3D.
	TopLoc_Datum3D (const gp_Trsf &T)
	Constructs a Datum3D form a Trsf from gp. An error is raised if the Trsf is not a rigid transformation.
const gp_Trsf &	Transformation () const
	Returns a gp_Trsf which, when applied to this datum, produces the default datum.
const gp_Trsf &	Trsf () const
	Returns a gp_Trsf which, when applied to this datum, produces the default datum.
gp_TrsfForm	Form () const
	Return transformation form.
void	DumpJson (Standard_OStream &theOStream, int theDepth=-1) const
	Dumps the content of me into the stream.
void	ShallowDump (Standard_OStream &S) const
	Writes the contents of this Datum3D to the stream S.
Public Member Functions inherited from Standard_Transient
	Standard_Transient ()
	Empty constructor.
	Standard_Transient (const Standard_Transient &)
	Copy constructor – does nothing.
Standard_Transient &	operator= (const Standard_Transient &)
	Assignment operator, needed to avoid copying reference counter.
virtual	~Standard_Transient ()=default
	Destructor must be virtual.
virtual const opencascade::handle< Standard_Type > &	DynamicType () const
	Returns a type descriptor about this object.
bool	IsInstance (const opencascade::handle< Standard_Type > &theType) const
	Returns a true value if this is an instance of Type.
bool	IsInstance (const char *const theTypeName) const
	Returns a true value if this is an instance of TypeName.
bool	IsKind (const opencascade::handle< Standard_Type > &theType) const
	Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism.
bool	IsKind (const char *const theTypeName) const
	Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism.
Standard_Transient *	This () const
	Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero.
int	GetRefCount () const noexcept
	Get the reference counter of this object.
void	IncrementRefCounter () noexcept
	Increments the reference counter of this object. Uses relaxed memory ordering since incrementing only requires atomicity, not synchronization with other memory operations.
int	DecrementRefCounter () noexcept
	Decrements the reference counter of this object; returns the decremented value. Uses release ordering for the decrement to ensure all writes to the object are visible before the count reaches zero. An acquire fence is added only when the count reaches zero, ensuring proper synchronization before deletion. This is more efficient than using acq_rel for every decrement.
virtual void	Delete () const
	Memory deallocator for transient classes.

Additional Inherited Members
typedef void	base_type
	Returns a type descriptor about this object.
static constexpr const char *	get_type_name ()
	Returns a type descriptor about this object.
static const opencascade::handle< Standard_Type > &	get_type_descriptor ()
	Returns type descriptor of Standard_Transient class.

Detailed Description

Describes a coordinate transformation, i.e. a change to an elementary 3D coordinate system, or position in 3D space. A Datum3D is always described relative to the default datum. The default datum is described relative to itself: its origin is (0,0,0), and its axes are (1,0,0) (0,1,0) (0,0,1).

Constructor & Destructor Documentation

TopLoc_Datum3D() [1/2]

TopLoc_Datum3D::TopLoc_Datum3D

(

)

Constructs a default Datum3D.

TopLoc_Datum3D() [2/2]

TopLoc_Datum3D::TopLoc_Datum3D

(

const gp_Trsf &

T

)

Constructs a Datum3D form a Trsf from gp. An error is raised if the Trsf is not a rigid transformation.

Member Function Documentation

DumpJson()

void TopLoc_Datum3D::DumpJson	(	Standard_OStream &	theOStream,
		int	theDepth = -1 ) const

Dumps the content of me into the stream.

Form()

gp_TrsfForm TopLoc_Datum3D::Form ( ) const

inline

Return transformation form.

ShallowDump()

void TopLoc_Datum3D::ShallowDump

(

Standard_OStream &

S

)

const

Writes the contents of this Datum3D to the stream S.

Transformation()

const gp_Trsf & TopLoc_Datum3D::Transformation ( ) const

inline

Returns a gp_Trsf which, when applied to this datum, produces the default datum.

Trsf()

const gp_Trsf & TopLoc_Datum3D::Trsf ( ) const

inline

Returns a gp_Trsf which, when applied to this datum, produces the default datum.

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

• TopLoc_Datum3D.hxx