OCC.IntWalk module¶

This package defines the ‘walking’ (marching) algorithmesfor the intersection between two surfaces.One of the surfaces is a parametric one.If the other is an implicit one, the ‘IWalking’ class willbe used.If both surfaces are parametric, the ‘PWalking’ class willbe used.-Level: InternalAll the methods of the classes of this package are Internal.

class IntWalk_PWalking(*args)¶

Bases: object

Constructor used to set the data to compute intersection lines between Caro1 and Caro2. Deflection is the maximum deflection admitted between two consecutive points on the resulting polyline. TolTangency is the tolerance to find a tangent point. Func is the criterion which has to be evaluated at each solution point (each point of the line). It is necessary to call the Perform method to compute the intersection lines. The line found starts at a point on or in 2 natural domains of surfaces. It can be closed in the standard case if it is open it stops and begins at the border of one of the domains. If an open line stops at the middle of a domain, one stops at the tangent point. Epsilon is SquareTolerance of points confusion.

Parameters:	Caro1 (Handle_Adaptor3d_HSurface &) – Caro2 (Handle_Adaptor3d_HSurface &) – TolTangency (float) – Epsilon (float) – Deflection (float) – Increment (float) –
Return type:	None

Returns the intersection line containing the exact point Poin. This line is a polygonal line. Deflection is the maximum deflection admitted between two consecutive points on the resulting polyline. TolTangency is the tolerance to find a tangent point. Func is the criterion which has to be evaluated at each solution point (each point of the line). The line found starts at a point on or in 2 natural domains of surfaces. It can be closed in the standard case if it is open it stops and begins at the border of one of the domains. If an open line stops at the middle of a domain, one stops at the tangent point. Epsilon is SquareTolerance of points confusion.

Parameters:	Caro1 (Handle_Adaptor3d_HSurface &) – Caro2 (Handle_Adaptor3d_HSurface &) – TolTangency (float) – Epsilon (float) – Deflection (float) – Increment (float) – U1 (float) – V1 (float) – U2 (float) – V2 (float) –
Return type:	None

AddAPoint()¶

Parameters:	line (Handle_IntSurf_LineOn2S &) – POn2S (IntSurf_PntOn2S &) –
Return type:	None

IsClosed()¶

Returns True if the line is closed. An exception is raised if IsDone returns False.

Return type:	bool

IsDone()¶

Returns true if the calculus was successful.

Return type:	bool

Line()¶

Return type:	Handle_IntSurf_LineOn2S

NbPoints()¶

Returns the number of points of the resulting polyline. An exception is raised if IsDone returns False.

Return type:	int

Perform()¶

calculate the line of intersection

Parameters:	ParDep (TColStd_Array1OfReal &) –
Return type:	None

calculate the line of intersection. The regulation of steps is done using min and max values on u and v. (if this data is not presented as in the previous method, the initial steps are calculated starting from min and max uv of faces).

Parameters:	ParDep (TColStd_Array1OfReal &) – u1min (float) – v1min (float) – u2min (float) – v2min (float) – u1max (float) – v1max (float) – u2max (float) – v2max (float) –
Return type:	None

PerformFirstPoint()¶

calculate the first point of a line of intersection

Parameters:	ParDep (TColStd_Array1OfReal &) – FirstPoint (IntSurf_PntOn2S &) –
Return type:	bool

PutToBoundary()¶

Parameters:	theASurf1 (Handle_Adaptor3d_HSurface &) – theASurf2 (Handle_Adaptor3d_HSurface &) –
Return type:	bool

RepartirOuDiviser()¶

Parameters:	DejaReparti (bool) – ChoixIso (IntImp_ConstIsoparametric &) – Arrive (bool) –
Return type:	None

SeekAdditionalPoints()¶

Parameters:	theASurf1 (Handle_Adaptor3d_HSurface &) – theASurf2 (Handle_Adaptor3d_HSurface &) – theMinNbPoints (int) –
Return type:	bool

TangentAtFirst()¶

Returns True if the surface are tangent at the first point of the line. An exception is raised if IsDone returns False.

Return type:	bool

TangentAtLast()¶

Returns true if the surface are tangent at the last point of the line. An exception is raised if IsDone returns False.

Return type:	bool

TangentAtLine()¶

Parameters:	Index (int &) –
Return type:	gp_Dir

TestArret()¶

Parameters:	DejaReparti (bool) – Param (TColStd_Array1OfReal &) – ChoixIso (IntImp_ConstIsoparametric &) –
Return type:	bool

TestDeflection()¶

Return type:	IntWalk_StatusDeflection

Value()¶

Returns the point of range Index on the polyline. An exception is raised if IsDone returns False. An exception is raised if Index<=0 or Index>NbPoints.

Parameters:	Index (int) –
Return type:	IntSurf_PntOn2S

thisown¶: The membership flag

class IntWalk_TheFunctionOfTheInt2S(*args)¶

Bases: OCC.math.math_FunctionSetWithDerivatives

Return type:	None
Parameters:	S1 (Handle_Adaptor3d_HSurface &) – S2 (Handle_Adaptor3d_HSurface &) –
Return type:	None

AuxillarSurface1()¶

Return type:	Handle_Adaptor3d_HSurface

AuxillarSurface2()¶

Return type:	Handle_Adaptor3d_HSurface

ComputeParameters()¶

Parameters:	ChoixIso (IntImp_ConstIsoparametric) – Param (TColStd_Array1OfReal &) – UVap (math_Vector &) – BornInf (math_Vector &) – BornSup (math_Vector &) – Tolerance (math_Vector &) –
Return type:	None

Direction()¶

Return type:	gp_Dir

DirectionOnS1()¶

Return type:	gp_Dir2d

DirectionOnS2()¶

Return type:	gp_Dir2d

IsTangent()¶

Parameters:	UVap (math_Vector &) – Param (TColStd_Array1OfReal &) – BestChoix (IntImp_ConstIsoparametric &) –
Return type:	bool

Point()¶

Return type:	gp_Pnt

Root()¶

Return type:	float

thisown¶: The membership flag

class IntWalk_TheInt2S(*args)¶

Bases: object

Return type:	None
Parameters:	Param (TColStd_Array1OfReal &) – S1 (Handle_Adaptor3d_HSurface &) – S2 (Handle_Adaptor3d_HSurface &) – TolTangency (float) – S1 – S2 – TolTangency –
Return type:	None
Return type:	None

ChangePoint()¶

Return type:	IntSurf_PntOn2S

Direction()¶

Return type:	gp_Dir

DirectionOnS1()¶

Return type:	gp_Dir2d

DirectionOnS2()¶

Return type:	gp_Dir2d

Function()¶

Return type:	IntWalk_TheFunctionOfTheInt2S

IsDone()¶

Return type:	bool

IsEmpty()¶

Return type:	bool

IsTangent()¶

Return type:	bool

Perform()¶

Parameters:	Param (TColStd_Array1OfReal &) – Rsnld (math_FunctionSetRoot &) – Param – Rsnld – ChoixIso (IntImp_ConstIsoparametric) –
Return type:	IntImp_ConstIsoparametric
Return type:	IntImp_ConstIsoparametric

Point()¶

Return type:	IntSurf_PntOn2S

thisown¶: The membership flag

class IntWalk_WalkingData(*args, **kwargs)¶

Bases: object

etat¶

thisown¶: The membership flag

ustart¶

vstart¶

class SwigPyIterator(*args, **kwargs)¶

Bases: object

advance()¶

copy()¶

decr()¶

distance()¶

equal()¶

incr()¶

next()¶

previous()¶

thisown¶: The membership flag

value()¶

new_instancemethod(func, inst, cls)¶

register_handle(handle, base_object)¶: Inserts the handle into the base object to prevent memory corruption in certain cases