OCC.Core.TopExp module

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

class SwigPyIterator(*args, **kwargs)

Bases: object

advance()

copy()

decr()

distance()

equal()

incr()

next()

previous()

property thisown

The membership flag

value()

class TopExp_Explorer(*args)

Bases: object

• Creates an empty explorer, becomes usefull after Init.

  rtype

  None* Creates an Explorer on the Shape <S>. //! <ToFind> is the type of shapes to search. TopAbs_VERTEX, TopAbs_EDGE, … //! <ToAvoid> is the type of shape to skip in the exploration. If <ToAvoid> is equal or less complex than <ToFind> or if <ToAVoid> is SHAPE it has no effect on the exploration.

  param S

  type S

  TopoDS_Shape

  param ToFind

  type ToFind

  TopAbs_ShapeEnum

  param ToAvoid

  default value is TopAbs_SHAPE

  type ToAvoid

  TopAbs_ShapeEnum

  rtype

  None

Clear()

• Clears the content of the explorer. It will return False on More().

  rtype

  None

Current()

• Returns the current shape in the exploration. Exceptions Standard_NoSuchObject if this explorer has no more shapes to explore.

  rtype

  TopoDS_Shape

Depth()

• Returns the current depth of the exploration. 0 is the shape to explore itself.

  rtype

  int

Destroy()

Return type

None

Init()

• Resets this explorer on the shape S. It is initialized to search the shape S, for shapes of type ToFind, that are not part of a shape ToAvoid. If the shape ToAvoid is equal to TopAbs_SHAPE, or if it is the same as, or less complex than, the shape ToFind it has no effect on the search.

  param S

  type S

  TopoDS_Shape

  param ToFind

  type ToFind

  TopAbs_ShapeEnum

  param ToAvoid

  default value is TopAbs_SHAPE

  type ToAvoid

  TopAbs_ShapeEnum

  rtype

  None

More()

• Returns True if there are more shapes in the exploration.

  rtype

  bool

Next()

• Moves to the next Shape in the exploration. Exceptions Standard_NoMoreObject if there are no more shapes to explore.

  rtype

  None

ReInit()

• Reinitialize the exploration with the original arguments.

  rtype

  None

Value()

• Returns the current shape in the exploration. Exceptions Standard_NoSuchObject if this explorer has no more shapes to explore.

  rtype

  TopoDS_Shape

property thisown

The membership flag

class topexp

Bases: object

static CommonVertex()

• Finds the vertex <V> common to the two edges <E1,E2>, returns True if this vertex exists. //! Warning: <V> has sense only if the value <True> is returned

  param E1

  type E1

  TopoDS_Edge

  param E2

  type E2

  TopoDS_Edge

  param V

  type V

  TopoDS_Vertex

  rtype

  bool

static FirstVertex()

• Returns the Vertex of orientation FORWARD in E. If there is none returns a Null Shape. CumOri = Truetaking account the edge orientation

  param E

  type E

  TopoDS_Edge

  param CumOri

  default value is Standard_False

  type CumOri

  bool

  rtype

  TopoDS_Vertex

static LastVertex()

• Returns the Vertex of orientation REVERSED in E. If there is none returns a Null Shape. CumOri = Truetaking account the edge orientation

  param E

  type E

  TopoDS_Edge

  param CumOri

  default value is Standard_False

  type CumOri

  bool

  rtype

  TopoDS_Vertex

static MapShapes()

• Tool to explore a topological data structure. Stores in the map <M> all the sub-shapes of <S> of type <T>. //! Warning: The map is not cleared at first.

  param S

  type S

  TopoDS_Shape

  param T

  type T

  TopAbs_ShapeEnum

  param M

  type M

  TopTools_IndexedMapOfShape

  rtype

  void* Stores in the map <M> all the sub-shapes of <S>.

  param S

  type S

  TopoDS_Shape

  param M

  type M

  TopTools_IndexedMapOfShape

  rtype

  void* Stores in the map <M> all the sub-shapes of <S>.

  param S

  type S

  TopoDS_Shape

  param M

  type M

  TopTools_MapOfShape

  rtype

  void

static MapShapesAndAncestors()

• Stores in the map <M> all the subshape of <S> of type <TS> for each one append to the list all the ancestors of type <TA>. For example map all the edges and bind the list of faces. Warning: The map is not cleared at first.

  param S

  type S

  TopoDS_Shape

  param TS

  type TS

  TopAbs_ShapeEnum

  param TA

  type TA

  TopAbs_ShapeEnum

  param M

  type M

  TopTools_IndexedDataMapOfShapeListOfShape

  rtype

  void

static MapShapesAndUniqueAncestors()

• Stores in the map <M> all the subshape of <S> of type <TS> for each one append to the list all unique ancestors of type <TA>. For example map all the edges and bind the list of faces. useOrientation = Truetaking account the ancestor orientation Warning: The map is not cleared at first.

  param S

  type S

  TopoDS_Shape

  param TS

  type TS

  TopAbs_ShapeEnum

  param TA

  type TA

  TopAbs_ShapeEnum

  param M

  type M

  TopTools_IndexedDataMapOfShapeListOfShape

  param useOrientation

  default value is Standard_False

  type useOrientation

  bool

  rtype

  void

static Vertices()

• Returns in Vfirst, Vlast the FORWARD and REVERSED vertices of the edge <E>. May be null shapes. CumOri = Truetaking account the edge orientation

  param E

  type E

  TopoDS_Edge

  param Vfirst

  type Vfirst

  TopoDS_Vertex

  param Vlast

  type Vlast

  TopoDS_Vertex

  param CumOri

  default value is Standard_False

  type CumOri

  bool

  rtype

  void* Returns in Vfirst, Vlast the first and last vertices of the open wire <W>. May be null shapes. if <W> is closed Vfirst and Vlast are a same vertex on <W>. if <W> is no manifold. VFirst and VLast are null shapes.

  param W

  type W

  TopoDS_Wire

  param Vfirst

  type Vfirst

  TopoDS_Vertex

  param Vlast

  type Vlast

  TopoDS_Vertex

  rtype

  void

property thisown

The membership flag