OCC.ChFi2d module¶

This package contains the algorithms used to buildfillets or chamfers on planar wire.This package provides two algorithms for 2D fillets:ChFi2d_Builder - it constructs a fillet or chamferfor linear and circular edges of a face.ChFi2d_FilletAPI - it encapsulates two algorithms:ChFi2d_AnaFilletAlgo - analytical constructor of the fillet.It works only for linear and circular edges,having a common point.ChFi2d_FilletAlgo - iteration recursive method constructingthe fillet edge for any type of edges includingellipses and b-splines.The edges may even have no common point.ChFi2d_ChamferAPI - an algoroithm for construction of chamfersbetween two linear edges of a plane.The algorithms ChFi2d_AnaFilletAlgo and ChFi2d_FilletAlgo may be used directlyor via the interface class ChFi2d_FilletAPI.

class ChFi2d_AnaFilletAlgo(*args)¶

Bases: object

An empty constructor. Use the method Init() to initialize the class.

Return type:	None

A constructor. It expects a wire consisting of two edges of type (any combination of): - segment - arc of circle.

Parameters:	theWire (TopoDS_Wire &) – thePlane (gp_Pln) –
Return type:	None

A constructor. It expects two edges having a common point of type: - segment - arc of circle.

Parameters:	theEdge1 (TopoDS_Edge &) – theEdge2 (TopoDS_Edge &) – thePlane (gp_Pln) –
Return type:	None

Init()¶

Initializes the class by a wire consisting of two edges.

Parameters:	theWire (TopoDS_Wire &) – thePlane (gp_Pln) –
Return type:	None

Initializes the class by two edges.

Parameters:	theEdge1 (TopoDS_Edge &) – theEdge2 (TopoDS_Edge &) – thePlane (gp_Pln) –
Return type:	None

Perform()¶

Calculates a fillet.

Parameters:	radius (float) –
Return type:	bool

Result()¶

Retrieves a result (fillet and shrinked neighbours).

Parameters:	e1 (TopoDS_Edge &) – e2 (TopoDS_Edge &) –
Return type:	TopoDS_Edge

thisown¶: The membership flag

class ChFi2d_Builder(*args)¶

Bases: object

Return type:	None

The face <F> can be build on a closed or an open wire.

Parameters:	F (TopoDS_Face &) –
Return type:	None

AddChamfer()¶

Add a chamfer on the wire between the two edges connected <E1> and <E2>. <AddChamfer> returns the chamfer edge. This edge has sense only if the status <status> is <IsDone>.

Parameters:	E1 (TopoDS_Edge &) – E2 (TopoDS_Edge &) – D1 (float) – D2 (float) –
Return type:	TopoDS_Edge

Add a chamfer on the wire between the two edges connected to the vertex <V>. The chamfer will make an angle <Ang> with the edge <E>, and one of its extremities will be on <E> at distance <D>. The returned edge has sense only if the status <status> is <IsDone>. Warning: The value of <Ang> must be expressed in Radian.

Parameters:	E (TopoDS_Edge &) – V (TopoDS_Vertex &) – D (float) – Ang (float) –
Return type:	TopoDS_Edge

AddFillet()¶

Add a fillet of radius <Radius> on the wire between the two edges connected to the vertex <V>. <AddFillet> returns the fillet edge. The returned edge has sense only if the status <status> is <IsDone>

Parameters:	V (TopoDS_Vertex &) – Radius (float) –
Return type:	TopoDS_Edge

BasisEdge()¶

Returns the parent edge of <E> Warning: If <E>is a basis edge, the returned edge would be equal to <E>

Parameters:	E (TopoDS_Edge &) –
Return type:	TopoDS_Edge

ChamferEdges()¶

returns the list of new edges

Return type:	TopTools_SequenceOfShape

DescendantEdge()¶

returns the modified edge if <E> has descendant or <E> in the other case.

Parameters:	E (TopoDS_Edge &) –
Return type:	TopoDS_Edge

FilletEdges()¶

returns the list of new edges

Return type:	TopTools_SequenceOfShape

HasDescendant()¶

Parameters:	E (TopoDS_Edge &) –
Return type:	bool

Init()¶

Parameters:	F (TopoDS_Face &) – RefFace (TopoDS_Face &) – ModFace (TopoDS_Face &) –
Return type:	None
Return type:	None

IsModified()¶

Parameters:	E (TopoDS_Edge &) –
Return type:	bool

ModifyChamfer()¶

modify the chamfer <Chamfer> and returns the new chamfer edge. This edge as sense only if the status <status> is <IsDone>.

Parameters:	Chamfer (TopoDS_Edge &) – E1 (TopoDS_Edge &) – E2 (TopoDS_Edge &) – D1 (float) – D2 (float) –
Return type:	TopoDS_Edge

modify the chamfer <Chamfer> and returns the new chamfer edge. This edge as sense only if the status <status> is <IsDone>. Warning: The value of <Ang> must be expressed in Radian.

Parameters:	Chamfer (TopoDS_Edge &) – E (TopoDS_Edge &) – D (float) – Ang (float) –
Return type:	TopoDS_Edge

ModifyFillet()¶

modify the fillet radius and return the new fillet edge. this edge has sense only if the status <status> is <IsDone>.

Parameters:	Fillet (TopoDS_Edge &) – Radius (float) –
Return type:	TopoDS_Edge

NbChamfer()¶

Return type:	int

NbFillet()¶

Return type:	int

RemoveChamfer()¶

removes the chamfer <Chamfer> and returns the vertex connecting the two adjacent edges to this chamfer.

Parameters:	Chamfer (TopoDS_Edge &) –
Return type:	TopoDS_Vertex

RemoveFillet()¶

removes the fillet <Fillet> and returns the vertex connecting the two adjacent edges to this fillet.

Parameters:	Fillet (TopoDS_Edge &) –
Return type:	TopoDS_Vertex

Result()¶

returns the modified face

Return type:	TopoDS_Face

Status()¶

Return type:	ChFi2d_ConstructionError

thisown¶: The membership flag

class ChFi2d_ChamferAPI(*args)¶

Bases: object

An empty constructor.

Return type:	None

A constructor accepting a wire consisting of two linear edges.

Parameters:	theWire (TopoDS_Wire &) –
Return type:	None

A constructor accepting two linear edges.

Parameters:	theEdge1 (TopoDS_Edge &) – theEdge2 (TopoDS_Edge &) –
Return type:	None

Init()¶

Initializes the class by a wire consisting of two libear edges.

Parameters:	theWire (TopoDS_Wire &) –
Return type:	None

Initializes the class by two linear edges.

Parameters:	theEdge1 (TopoDS_Edge &) – theEdge2 (TopoDS_Edge &) –
Return type:	None

Perform()¶

Constructs a chamfer edge. Returns true if the edge is constructed.

Return type:	bool

Result()¶

Parameters:	theEdge1 (TopoDS_Edge &) – theEdge2 (TopoDS_Edge &) – theLength1 (float) – theLength2 (float) –
Return type:	TopoDS_Edge

thisown¶: The membership flag

class ChFi2d_FilletAPI(*args)¶

Bases: object

An empty constructor of the fillet algorithm. Call a method Init() to initialize the algorithm before calling of a Perform() method.

Return type:	None

A constructor of a fillet algorithm: accepts a wire consisting of two edges in a plane.

Parameters:	theWire (TopoDS_Wire &) – thePlane (gp_Pln) –
Return type:	None

A constructor of a fillet algorithm: accepts two edges in a plane.

Parameters:	theEdge1 (TopoDS_Edge &) – theEdge2 (TopoDS_Edge &) – thePlane (gp_Pln) –
Return type:	None

Init()¶

Initializes a fillet algorithm: accepts a wire consisting of two edges in a plane.

Parameters:	theWire (TopoDS_Wire &) – thePlane (gp_Pln) –
Return type:	None

Initializes a fillet algorithm: accepts two edges in a plane.

Parameters:	theEdge1 (TopoDS_Edge &) – theEdge2 (TopoDS_Edge &) – thePlane (gp_Pln) –
Return type:	None

NbResults()¶

Returns number of possible solutions. <thePoint> chooses a particular fillet in case of several fillets may be constructed (for example, a circle intersecting a segment in 2 points). Put the intersecting (or common) point of the edges.

Parameters:	thePoint (gp_Pnt) –
Return type:	int

Perform()¶

Constructs a fillet edge. Returns true if at least one result was found.

Parameters:	theRadius (float) –
Return type:	bool

Result()¶

Returns result (fillet edge, modified edge1, modified edge2), nearest to the given point <thePoint> if iSolution == -1 <thePoint> chooses a particular fillet in case of several fillets may be constructed (for example, a circle intersecting a segment in 2 points). Put the intersecting (or common) point of the edges.

Parameters:	thePoint (gp_Pnt) – theEdge1 (TopoDS_Edge &) – theEdge2 (TopoDS_Edge &) – iSolution (int) – default value is -1
Return type:	TopoDS_Edge

thisown¶: The membership flag

class ChFi2d_FilletAlgo(*args)¶

Bases: object

An empty constructor of the fillet algorithm. Call a method Init() to initialize the algorithm before calling of a Perform() method.

Return type:	None

A constructor of a fillet algorithm: accepts a wire consisting of two edges in a plane.

Parameters:	theWire (TopoDS_Wire &) – thePlane (gp_Pln) –
Return type:	None

A constructor of a fillet algorithm: accepts two edges in a plane.

Parameters:	theEdge1 (TopoDS_Edge &) – theEdge2 (TopoDS_Edge &) – thePlane (gp_Pln) –
Return type:	None

Init()¶

Initializes a fillet algorithm: accepts a wire consisting of two edges in a plane.

Parameters:	theWire (TopoDS_Wire &) – thePlane (gp_Pln) –
Return type:	None

Initializes a fillet algorithm: accepts two edges in a plane.

Parameters:	theEdge1 (TopoDS_Edge &) – theEdge2 (TopoDS_Edge &) – thePlane (gp_Pln) –
Return type:	None

NbResults()¶

Returns number of possible solutions. <thePoint> chooses a particular fillet in case of several fillets may be constructed (for example, a circle intersecting a segment in 2 points). Put the intersecting (or common) point of the edges.

Parameters:	thePoint (gp_Pnt) –
Return type:	int

Perform()¶

Constructs a fillet edge. Returns true, if at least one result was found

Parameters:	theRadius (float) –
Return type:	bool

Result()¶

Returns result (fillet edge, modified edge1, modified edge2), neares to the given point <thePoint> if iSolution == -1. <thePoint> chooses a particular fillet in case of several fillets may be constructed (for example, a circle intersecting a segment in 2 points). Put the intersecting (or common) point of the edges.

Parameters:	thePoint (gp_Pnt) – theEdge1 (TopoDS_Edge &) – theEdge2 (TopoDS_Edge &) – iSolution (int) – default value is -1
Return type:	TopoDS_Edge

thisown¶: The membership flag

class SwigPyIterator(*args, **kwargs)¶

Bases: object

advance()¶

copy()¶

decr()¶

distance()¶

equal()¶

incr()¶

next()¶

previous()¶

thisown¶: The membership flag

value()¶

class chfi2d(*args, **kwargs)¶

Bases: object

thisown¶: The membership flag

new_instancemethod(func, inst, cls)¶

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