IntPatch_Line Class Reference

Definition of an intersection line between two surfaces. A line may be either geometric : line, circle, ellipse, parabola, hyperbola, as defined in the class GLine, or analytic, as defined in the class ALine, or defined by a set of points (coming from a walking algorithm) as defined in the class WLine. More...

#include <IntPatch_Line.hxx>

Inheritance diagram for IntPatch_Line:

Public Member Functions
void	SetValue (const bool Uiso1, const bool Viso1, const bool Uiso2, const bool Viso2)
	To set the values returned by IsUIsoS1,.... The default values are False.
IntPatch_IType	ArcType () const
	Returns the type of geometry 3d (Line, Circle, Parabola, Hyperbola, Ellipse, Analytic, Walking, Restriction).
bool	IsTangent () const
	Returns TRUE if the intersection is a line of tangency between the 2 patches.
IntSurf_TypeTrans	TransitionOnS1 () const
	Returns the type of the transition of the line for the first surface. The transition is "constant" along the line. The transition is IN if the line is oriented in such a way that the system of vector (N1,N2,T) is right-handed, where N1 is the normal to the first surface at a point P, N2 is the normal to the second surface at a point P, T is the tangent to the intersection line at P. If the system of vector is left-handed, the transition is OUT. When N1 and N2 are colinear all along the intersection line, the transition will be.
IntSurf_TypeTrans	TransitionOnS2 () const
	Returns the type of the transition of the line for the second surface. The transition is "constant" along the line.
IntSurf_Situation	SituationS1 () const
	Returns the situation (INSIDE/OUTSIDE/UNKNOWN) of the first patch compared to the second one, when TransitionOnS1 or TransitionOnS2 returns TOUCH. Otherwise, an exception is raised.
IntSurf_Situation	SituationS2 () const
	Returns the situation (INSIDE/OUTSIDE/UNKNOWN) of the second patch compared to the first one, when TransitionOnS1 or TransitionOnS2 returns TOUCH. Otherwise, an exception is raised.
bool	IsUIsoOnS1 () const
	Returns TRUE if the intersection is a U isoparametric curve on the first patch.
bool	IsVIsoOnS1 () const
	Returns TRUE if the intersection is a V isoparametric curve on the first patch.
bool	IsUIsoOnS2 () const
	Returns TRUE if the intersection is a U isoparametric curve on the second patch.
bool	IsVIsoOnS2 () const
	Returns TRUE if the intersection is a V isoparametric curve on the second patch.
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.

Protected Member Functions
	IntPatch_Line (const bool Tang, const IntSurf_TypeTrans Trans1, const IntSurf_TypeTrans Trans2)
	To initialize the fields, when the transitions are In or Out.
	IntPatch_Line (const bool Tang, const IntSurf_Situation Situ1, const IntSurf_Situation Situ2)
	To initialize the fields, when the transitions are Touch.
	IntPatch_Line (const bool Tang)
	To initialize the fields, when the transitions are Undecided.

Protected Attributes
IntPatch_IType	typ

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

Definition of an intersection line between two surfaces. A line may be either geometric : line, circle, ellipse, parabola, hyperbola, as defined in the class GLine, or analytic, as defined in the class ALine, or defined by a set of points (coming from a walking algorithm) as defined in the class WLine.

Constructor & Destructor Documentation

IntPatch_Line() [1/3]

IntPatch_Line::IntPatch_Line ( const bool Tang, const IntSurf_TypeTrans Trans1, const IntSurf_TypeTrans Trans2 )

protected

To initialize the fields, when the transitions are In or Out.

IntPatch_Line() [2/3]

IntPatch_Line::IntPatch_Line ( const bool Tang, const IntSurf_Situation Situ1, const IntSurf_Situation Situ2 )

protected

To initialize the fields, when the transitions are Touch.

IntPatch_Line() [3/3]

IntPatch_Line::IntPatch_Line ( const bool Tang )

protected

To initialize the fields, when the transitions are Undecided.

Member Function Documentation

ArcType()

IntPatch_IType IntPatch_Line::ArcType

(

)

const

Returns the type of geometry 3d (Line, Circle, Parabola, Hyperbola, Ellipse, Analytic, Walking, Restriction).

IsTangent()

bool IntPatch_Line::IsTangent

(

)

const

Returns TRUE if the intersection is a line of tangency between the 2 patches.

IsUIsoOnS1()

bool IntPatch_Line::IsUIsoOnS1

(

)

const

Returns TRUE if the intersection is a U isoparametric curve on the first patch.

IsUIsoOnS2()

bool IntPatch_Line::IsUIsoOnS2

(

)

const

Returns TRUE if the intersection is a U isoparametric curve on the second patch.

IsVIsoOnS1()

bool IntPatch_Line::IsVIsoOnS1

(

)

const

Returns TRUE if the intersection is a V isoparametric curve on the first patch.

IsVIsoOnS2()

bool IntPatch_Line::IsVIsoOnS2

(

)

const

Returns TRUE if the intersection is a V isoparametric curve on the second patch.

SetValue()

void IntPatch_Line::SetValue	(	const bool	Uiso1,
		const bool	Viso1,
		const bool	Uiso2,
		const bool	Viso2 )

To set the values returned by IsUIsoS1,.... The default values are False.

SituationS1()

IntSurf_Situation IntPatch_Line::SituationS1

(

)

const

Returns the situation (INSIDE/OUTSIDE/UNKNOWN) of the first patch compared to the second one, when TransitionOnS1 or TransitionOnS2 returns TOUCH. Otherwise, an exception is raised.

SituationS2()

IntSurf_Situation IntPatch_Line::SituationS2

(

)

const

Returns the situation (INSIDE/OUTSIDE/UNKNOWN) of the second patch compared to the first one, when TransitionOnS1 or TransitionOnS2 returns TOUCH. Otherwise, an exception is raised.

TransitionOnS1()

IntSurf_TypeTrans IntPatch_Line::TransitionOnS1

(

)

const

Returns the type of the transition of the line for the first surface. The transition is "constant" along the line. The transition is IN if the line is oriented in such a way that the system of vector (N1,N2,T) is right-handed, where N1 is the normal to the first surface at a point P, N2 is the normal to the second surface at a point P, T is the tangent to the intersection line at P. If the system of vector is left-handed, the transition is OUT. When N1 and N2 are colinear all along the intersection line, the transition will be.

• TOUCH, if it is possible to use the 2nd derivatives to determine the position of one surafce compared to the other (see Situation)
• UNDECIDED otherwise.

If one of the transition is TOUCH or UNDECIDED, the other one has got the same value.

TransitionOnS2()

IntSurf_TypeTrans IntPatch_Line::TransitionOnS2

(

)

const

Returns the type of the transition of the line for the second surface. The transition is "constant" along the line.

Field Documentation

typ

IntPatch_IType IntPatch_Line::typ

protected

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

• IntPatch_Line.hxx