OCC.Core.BRepClass3d module

BRepClass3d module, see official documentation at https://www.opencascade.com/doc/occt-7.4.0/refman/html/package_brepclass3d.html

class BRepClass3d_BndBoxTree(*args)

Bases: object

Add()

Allocator()

Clear()

IsEmpty()

Root()

Select()

property thisown

The membership flag

class BRepClass3d_Intersector3d(*args)

Bases: object

• Empty constructor.

  rtype

  None

Face()

• Returns the significant face used to determine the intersection.

  rtype

  TopoDS_Face

HasAPoint()

• True is returned if a point has been found.

  rtype

  bool

IsDone()

• True is returned when the intersection have been computed.

  rtype

  bool

Perform()

• Perform the intersection between the segment L(0) … L(Prm) and the Shape <Sh>. //! Only the point with the smallest parameter on the line is returned. //! The Tolerance <Tol> is used to determine if the first point of the segment is near the face. In that case, the parameter of the intersection point on the line can be a negative value (greater than -Tol).

  param L

  type L

  gp_Lin

  param Prm

  type Prm

  float

  param Tol

  type Tol

  float

  param F

  type F

  TopoDS_Face &

  rtype

  None

Pnt()

• Returns the geometric point of the intersection between the line and the surface.

  rtype

  gp_Pnt

State()

• Returns the state of the point on the face. The values can be either TopAbs_IN ( the point is in the face) or TopAbs_ON ( the point is on a boudary of the face).

  rtype

  TopAbs_State

Transition()

• Returns the transition of the line on the surface.

  rtype

  IntCurveSurface_TransitionOnCurve

UParameter()

• Returns the U parameter of the intersection point on the surface.

  rtype

  float

VParameter()

• Returns the V parameter of the intersection point on the surface.

  rtype

  float

WParameter()

• Returns the parameter of the intersection point on the line.

  rtype

  float

property thisown

The membership flag

class BRepClass3d_MapOfInter(*args)

Bases: object

Assign()

Bind()

Bound()

ChangeFind()

ChangeSeek()

Clear()

Exchange()

Find()

IsBound()

ReSize()

Seek()

Set()

Size()

UnBind()

begin()

cbegin()

cend()

end()

property thisown

The membership flag

class BRepClass3d_SClassifier(*args)

Bases: object

• Empty constructor.

  rtype

  None* Constructor to classify the point P with the tolerance Tol on the solid S.

  param S

  type S

  BRepClass3d_SolidExplorer &

  param P

  type P

  gp_Pnt

  param Tol

  type Tol

  float

  rtype

  None

Face()

• Returns the face used to determine the classification. When the state is ON, this is the face containing the point. //! When Rejected() returns True, Face() has no signification.

  rtype

  TopoDS_Face

IsOnAFace()

• Returns True when the point is a point of a face.

  rtype

  bool

Perform()

• Classify the point P with the tolerance Tol on the solid S.

  param S

  type S

  BRepClass3d_SolidExplorer &

  param P

  type P

  gp_Pnt

  param Tol

  type Tol

  float

  rtype

  None

PerformInfinitePoint()

• Classify an infinite point with the tolerance Tol on the solid S.

  param S

  type S

  BRepClass3d_SolidExplorer &

  param Tol

  type Tol

  float

  rtype

  None

Rejected()

• Returns True if the classification has been computed by rejection. The State is then OUT.

  rtype

  bool

State()

• Returns the result of the classification.

  rtype

  TopAbs_State

property thisown

The membership flag

class BRepClass3d_SolidClassifier(*args)

Bases: OCC.Core.BRepClass3d.BRepClass3d_SClassifier

• empty constructor

  rtype

  None* Constructor from a Shape.

  param S

  type S

  TopoDS_Shape &

  rtype

  None* Constructor to classify the point P with the tolerance Tol on the solid S.

  param S

  type S

  TopoDS_Shape &

  param P

  type P

  gp_Pnt

  param Tol

  type Tol

  float

  rtype

  None

Destroy()

Return type

None

Load()

Parameters

S –

type S

TopoDS_Shape &

rtype

None

Perform()

• Classify the point P with the tolerance Tol on the solid S.

  param P

  type P

  gp_Pnt

  param Tol

  type Tol

  float

  rtype

  None

PerformInfinitePoint()

• Classify an infinite point with the tolerance Tol on the solid S. Useful for compute the orientation of a solid.

  param Tol

  type Tol

  float

  rtype

  None

property thisown

The membership flag

class BRepClass3d_SolidExplorer(*args)

Bases: object

Return type

None:param S: :type S: TopoDS_Shape & :rtype: None

Box()

Return type

Bnd_Box

CurrentFace()

• Returns the current face.

  rtype

  TopoDS_Face

CurrentShell()

• Returns the current shell.

  rtype

  TopoDS_Shell

Destroy()

Return type

None

DumpSegment()

Parameters

P –

type P

gp_Pnt

param L

type L

gp_Lin

param Par

type Par

float

param S

type S

TopAbs_State

rtype

void

static FindAPointInTheFace()

• compute a point P in the face F. Param is a Real in ]0,1[ and is used to initialise the algorithm. For different values , different points are returned.

  param F

  type F

  TopoDS_Face &

  param P

  type P

  gp_Pnt

  param Param

  type Param

  float &

  rtype

  bool:param F:

  type F

  TopoDS_Face &

  param P

  type P

  gp_Pnt

  param u

  type u

  float &

  param v

  type v

  float &

  param Param

  type Param

  float &

  rtype

  bool:param F:

  type F

  TopoDS_Face &

  param P

  type P

  gp_Pnt

  param u

  type u

  float &

  param v

  type v

  float &

  param Param

  type Param

  float &

  param theVecD1U

  type theVecD1U

  gp_Vec

  param theVecD1V

  type theVecD1V

  gp_Vec

  rtype

  bool:param F:

  type F

  TopoDS_Face &

  param P

  type P

  gp_Pnt

  param u

  type u

  float &

  param v

  type v

  float &

  rtype

  bool:param F:

  type F

  TopoDS_Face &

  param P

  type P

  gp_Pnt

  rtype

  bool:param F:

  type F

  TopoDS_Face &

  param u

  type u

  float &

  param v

  type v

  float &

  rtype

  bool

GetFaceSegmentIndex()

• Returns the index of face for which last segment is calculated.

  rtype

  int

GetMapEV()

• Return edge/vertices map for current shape.

  rtype

  TopTools_IndexedMapOfShape

GetShape()

Return type

TopoDS_Shape

GetTree()

• Return UB-tree instance which is used for edge / vertex checks.

  rtype

  BRepClass3d_BndBoxTree

InitFace()

• Starts an exploration of the faces of the current shell.

  rtype

  None

InitShape()

Parameters

S –

type S

TopoDS_Shape &

rtype

None

InitShell()

• Starts an exploration of the shells.

  rtype

  None

Intersector()

Parameters

F –

type F

TopoDS_Face &

rtype

IntCurvesFace_Intersector

MoreFace()

• Returns True if current face in current shell.

  rtype

  bool

MoreShell()

• Returns True if there is a current shell.

  rtype

  bool

NextFace()

• Sets the explorer to the next Face of the current shell.

  rtype

  None

NextShell()

• Sets the explorer to the next shell.

  rtype

  None

OtherSegment()

• Returns in <L>, <Par> a segment having at least one intersection with the shape boundary to compute intersections. //! The First Call to this method returns a line which point to a point of the first face of the shape. The Second Call provide a line to the second face and so on.

  param P

  type P

  gp_Pnt

  param L

  type L

  gp_Lin

  param Par

  type Par

  float &

  rtype

  int

PointInTheFace()

Parameters

F –

type F

TopoDS_Face &

param P

type P

gp_Pnt

param u

type u

float &

param v

type v

float &

param Param

type Param

float &

param Index

type Index

int &

rtype

bool:param F:

type F

TopoDS_Face &

param P

type P

gp_Pnt

param u

type u

float &

param v

type v

float &

param Param

type Param

float &

param Index

type Index

int &

param surf

type surf

opencascade::handle<BRepAdaptor_HSurface> &

param u1

type u1

float

param v1

type v1

float

param u2

type u2

float

param v2

type v2

float

rtype

bool* <Index> gives point index to search from and returns point index of succeseful search

param F

type F

TopoDS_Face &

param P

type P

gp_Pnt

param u

type u

float &

param v

type v

float &

param Param

type Param

float &

param Index

type Index

int &

param surf

type surf

opencascade::handle<BRepAdaptor_HSurface> &

param u1

type u1

float

param v1

type v1

float

param u2

type u2

float

param v2

type v2

float

param theVecD1U

type theVecD1U

gp_Vec

param theVecD1V

type theVecD1V

gp_Vec

rtype

bool

Reject()

• Should return True if P outside of bounding vol. of the shape

  param P

  type P

  gp_Pnt

  rtype

  bool

RejectFace()

• returns True if the face is rejected.

  param L

  type L

  gp_Lin

  rtype

  bool

RejectShell()

• Returns True if the Shell is rejected.

  param L

  type L

  gp_Lin

  rtype

  bool

Segment()

• Returns in <L>, <Par> a segment having at least one intersection with the shape boundary to compute intersections.

  param P

  type P

  gp_Pnt

  param L

  type L

  gp_Lin

  param Par

  type Par

  float &

  rtype

  int

property thisown

The membership flag

class BRepClass3d_SolidPassiveClassifier(*args)

Bases: object

• Creates an undefined classifier.

  rtype

  None

Compare()

• Updates the classification process with the face <F> from the boundary.

  param F

  type F

  TopoDS_Face &

  param Or

  type Or

  TopAbs_Orientation

  rtype

  None

HasIntersection()

• Returns True if an intersection is computed.

  rtype

  bool

Intersector()

• Returns the intersecting algorithm.

  rtype

  BRepClass3d_Intersector3d

Parameter()

• Returns the current value of the parameter.

  rtype

  float

Reset()

• Starts a classification process. The point to classify is the origin of the line <L>. <P> is the original length of the segment on <L> used to compute intersections. <Tol> is the tolerance attached to the intersections.

  param L

  type L

  gp_Lin

  param P

  type P

  float

  param Tol

  type Tol

  float

  rtype

  None

State()

• Returns the current state of the point.

  rtype

  TopAbs_State

property thisown

The membership flag

class SwigPyIterator(*args, **kwargs)

Bases: object

advance()

copy()

decr()

distance()

equal()

incr()

next()

previous()

property thisown

The membership flag

value()

class brepclass3d

Bases: object

static OuterShell()

• Returns the outer most shell of <S>. Returns a Null shell if <S> has no outer shell. If <S> has only one shell, then it will return, without checking orientation.

  param S

  type S

  TopoDS_Solid &

  rtype

  TopoDS_Shell

property thisown

The membership flag