Open CASCADE Technology 7.8.0
Static Public Member Functions
IGESConvGeom Class Reference

This package is intended to gather geometric conversion which are not immediate but can be used for several purposes : mainly, standard conversion to and from CasCade geometric and topologic data, and adaptations of IGES files as required (as replacing Spline entities to BSpline equivalents). More...

#include <IGESConvGeom.hxx>

Static Public Member Functions

static Standard_Integer SplineCurveFromIGES (const Handle< IGESGeom_SplineCurve > &igesent, const Standard_Real epscoef, const Standard_Real epsgeom, Handle< Geom_BSplineCurve > &result)
 basic tool to build curves from IGESGeom (arrays of points, Transformations, evaluation of points in a datum) Converts a SplineCurve from IGES to a BSplineCurve from CasCade <epscoef> gives tolerance to consider coefficient to be nul <epsgeom> gives tolerance to consider poles to be equal The returned value is a status with these possible values :
 
static Standard_Integer IncreaseCurveContinuity (const Handle< Geom_BSplineCurve > &curve, const Standard_Real epsgeom, const Standard_Integer continuity=2)
 Tries to increase curve continuity with tolerance <epsgeom> <continuity> is the new desired continuity, can be 1 or 2 (more than 2 is considered as 2). Returns the new maximum continuity obtained on all knots. Remark that, for instance with <continuity> = 2, even if not all the knots can be passed to C2, all knots which can be are.
 
static Standard_Integer IncreaseCurveContinuity (const Handle< Geom2d_BSplineCurve > &curve, const Standard_Real epsgeom, const Standard_Integer continuity=2)
 
static Standard_Integer SplineSurfaceFromIGES (const Handle< IGESGeom_SplineSurface > &igesent, const Standard_Real epscoef, const Standard_Real epsgeom, Handle< Geom_BSplineSurface > &result)
 Converts a SplineSurface from IGES to a BSplineSurface from CasCade <epscoef> gives tolerance to consider coefficient to be nul <epsgeom> gives tolerance to consider poles to be equal The returned value is a status with these possible values :
 
static Standard_Integer IncreaseSurfaceContinuity (const Handle< Geom_BSplineSurface > &surface, const Standard_Real epsgeom, const Standard_Integer continuity=2)
 Tries to increase Surface continuity with tolerance <epsgeom> <continuity> is the new desired continuity, can be 1 or 2 (more than 2 is considered as 2). Returns the new maximum continuity obtained on all knots. Remark that, for instance with <continuity> = 2, even if not all the knots can be passed to C2, all knots which can be are.
 

Detailed Description

This package is intended to gather geometric conversion which are not immediate but can be used for several purposes : mainly, standard conversion to and from CasCade geometric and topologic data, and adaptations of IGES files as required (as replacing Spline entities to BSpline equivalents).

Member Function Documentation

◆ IncreaseCurveContinuity() [1/2]

static Standard_Integer IGESConvGeom::IncreaseCurveContinuity ( const Handle< Geom2d_BSplineCurve > &  curve,
const Standard_Real  epsgeom,
const Standard_Integer  continuity = 2 
)
static

◆ IncreaseCurveContinuity() [2/2]

static Standard_Integer IGESConvGeom::IncreaseCurveContinuity ( const Handle< Geom_BSplineCurve > &  curve,
const Standard_Real  epsgeom,
const Standard_Integer  continuity = 2 
)
static

Tries to increase curve continuity with tolerance <epsgeom> <continuity> is the new desired continuity, can be 1 or 2 (more than 2 is considered as 2). Returns the new maximum continuity obtained on all knots. Remark that, for instance with <continuity> = 2, even if not all the knots can be passed to C2, all knots which can be are.

◆ IncreaseSurfaceContinuity()

static Standard_Integer IGESConvGeom::IncreaseSurfaceContinuity ( const Handle< Geom_BSplineSurface > &  surface,
const Standard_Real  epsgeom,
const Standard_Integer  continuity = 2 
)
static

Tries to increase Surface continuity with tolerance <epsgeom> <continuity> is the new desired continuity, can be 1 or 2 (more than 2 is considered as 2). Returns the new maximum continuity obtained on all knots. Remark that, for instance with <continuity> = 2, even if not all the knots can be passed to C2, all knots which can be are.

◆ SplineCurveFromIGES()

static Standard_Integer IGESConvGeom::SplineCurveFromIGES ( const Handle< IGESGeom_SplineCurve > &  igesent,
const Standard_Real  epscoef,
const Standard_Real  epsgeom,
Handle< Geom_BSplineCurve > &  result 
)
static

basic tool to build curves from IGESGeom (arrays of points, Transformations, evaluation of points in a datum) Converts a SplineCurve from IGES to a BSplineCurve from CasCade <epscoef> gives tolerance to consider coefficient to be nul <epsgeom> gives tolerance to consider poles to be equal The returned value is a status with these possible values :

  • 0 OK, done
  • 1 the result is not guaranteed to be C0 (with <epsgeom>)
  • 2 SplineType not processed (allowed : max 3) (no result produced)
  • 3 error during creation of control points (no result produced)
  • 4 polynomial equation is not correct (no result produced)
  • 5 less than one segment (no result produced)

◆ SplineSurfaceFromIGES()

static Standard_Integer IGESConvGeom::SplineSurfaceFromIGES ( const Handle< IGESGeom_SplineSurface > &  igesent,
const Standard_Real  epscoef,
const Standard_Real  epsgeom,
Handle< Geom_BSplineSurface > &  result 
)
static

Converts a SplineSurface from IGES to a BSplineSurface from CasCade <epscoef> gives tolerance to consider coefficient to be nul <epsgeom> gives tolerance to consider poles to be equal The returned value is a status with these possible values :

  • 0 OK, done
  • 1 the result is not guaranteed to be C0 (with <epsgeom>)
  • 2 degree is not compatible with code boundary type (warning) but C0 is OK
  • 3 idem but C0 is not guaranteed (warning)
  • 4 degree has been determined to be nul, either in U or V (no result produced)
  • 5 less than one segment in U or V (no result produced)
The documentation for this class was generated from the following file:
Generated by doxygen 1.9.8