Open CASCADE Technology  6.5.4
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BRepOffsetAPI_ThruSections Class Reference

Describes functions to build a loft. This is a shell or a
solid passing through a set of sections in a given
sequence. Usually sections are wires, but the first and
the last sections may be vertices (punctual sections).

#include <BRepOffsetAPI_ThruSections.hxx>

Inheritance diagram for BRepOffsetAPI_ThruSections:
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Public Member Functions

DEFINE_STANDARD_ALLOC BRepOffsetAPI_ThruSections (const Standard_Boolean isSolid=Standard_False, const Standard_Boolean ruled=Standard_False, const Standard_Real pres3d=1.0e-06)
 Initializes an algorithm for building a shell or a solid
passing through a set of sections, where:

void Init (const Standard_Boolean isSolid=Standard_False, const Standard_Boolean ruled=Standard_False, const Standard_Real pres3d=1.0e-06)
 Initializes this algorithm for building a shell or a solid
passing through a set of sections, where:

void AddWire (const TopoDS_Wire &wire)
 Adds the wire wire to the set of
sections through which the shell or solid is built.
Use the Build function to construct the shape.

void AddVertex (const TopoDS_Vertex &aVertex)
 Adds the vertex Vertex (punctual section) to the set of sections
through which the shell or solid is built. A vertex may be added to the
set of sections only as first or last section. At least one wire
must be added to the set of sections by the method AddWire.
Use the Build function to construct the shape.

void CheckCompatibility (const Standard_Boolean check=Standard_True)
void SetSmoothing (const Standard_Boolean UseSmoothing)
 Define the approximation algorithm

void SetParType (const Approx_ParametrizationType ParType)
 Define the type of parametrization used in the approximation

void SetContinuity (const GeomAbs_Shape C)
 Define the Continuity used in the approximation

void SetCriteriumWeight (const Standard_Real W1, const Standard_Real W2, const Standard_Real W3)
 define the Weights associed to the criterium used in
the optimization.

if Wi <= 0

void SetMaxDegree (const Standard_Integer MaxDeg)
 Define the maximal U degree of result surface

Approx_ParametrizationType ParType () const
 returns the type of parametrization used in the approximation

GeomAbs_Shape Continuity () const
 returns the Continuity used in the approximation

Standard_Integer MaxDegree () const
 returns the maximal U degree of result surface

Standard_Boolean UseSmoothing () const
 Define the approximation algorithm

void CriteriumWeight (Standard_Real &W1, Standard_Real &W2, Standard_Real &W3) const
 returns the Weights associed to the criterium used in
the optimization.

virtual void Build ()
 This is called by Shape(). It does nothing but
may be redefined.

const TopoDS_ShapeFirstShape () const
 Returns the TopoDS Shape of the bottom of the loft if solid

const TopoDS_ShapeLastShape () const
 Returns the TopoDS Shape of the top of the loft if solid

TopoDS_Shape GeneratedFace (const TopoDS_Shape &Edge) const
 if Ruled
Returns the Face generated by each edge
except the last wire
if smoothed
Returns the Face generated by each edge of the first wire


Constructor & Destructor Documentation

  • isSolid is set to true if the construction algorithm is
    required to build a solid or to false if it is required to build
    a shell (the default value),
  • ruled is set to true if the faces generated between
    the edges of two consecutive wires are ruled surfaces or to
    false (the default value) if they are smoothed out by approximation,
  • pres3d defines the precision criterion used by the
    approximation algorithm; the default value is 1.0e-6.
    Use AddWire and AddVertex to define the
    successive sections of the shell or solid to be built.

Member Function Documentation

virtual void BRepOffsetAPI_ThruSections::Build ( ) [virtual]

Reimplemented from BRepBuilderAPI_MakeShape.

  • isSolid is set to true if this construction algorithm is
    required to build a solid or to false if it is required to
    build a shell. false is the default value;
  • ruled is set to true if the faces generated between the
    edges of two consecutive wires are ruled surfaces or
    to false (the default value) if they are smoothed out by approximation,
  • pres3d defines the precision criterion used by the
    approximation algorithm; the default value is 1.0e-6.
    Use AddWire and AddVertex to define the successive
    sections of the shell or solid to be built.

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