Public Member Functions |
| IGESGeom_BSplineCurve () |
void | Init (const Standard_Integer anIndex, const Standard_Integer aDegree, const Standard_Boolean aPlanar, const Standard_Boolean aClosed, const Standard_Boolean aPolynom, const Standard_Boolean aPeriodic, const Handle< TColStd_HArray1OfReal > &allKnots, const Handle< TColStd_HArray1OfReal > &allWeights, const Handle< TColgp_HArray1OfXYZ > &allPoles, const Standard_Real aUmin, const Standard_Real aUmax, const gp_XYZ &aNorm) |
| This method is used to set the fields of the class
BSplineCurve. Beware about indexation of arrays
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void | SetFormNumber (const Standard_Integer form) |
| Changes FormNumber (indicates the Shape of the Curve)
Error if not in range [0-5]
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Standard_Integer | UpperIndex () const |
| returns the upper index of the sum (see Knots,Poles)
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Standard_Integer | Degree () const |
| returns the degree of basis functions
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Standard_Boolean | IsPlanar () const |
| returns True if the curve is Planar, False if non-planar
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Standard_Boolean | IsClosed () const |
| returns True if the curve is closed, False if open
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Standard_Boolean | IsPolynomial (const Standard_Boolean flag=Standard_False) const |
| returns True if the curve is polynomial, False if rational
<flag> False (D) : computed from the list of weights
(all must be equal)
<flag> True : as recorded
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Standard_Boolean | IsPeriodic () const |
| returns True if the curve is periodic, False otherwise
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Standard_Integer | NbKnots () const |
| returns the number of knots (i.e. Degree + UpperIndex + 2)
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Standard_Real | Knot (const Standard_Integer anIndex) const |
| returns the knot referred to by anIndex,
inside the range [-Degree,UpperIndex+1]
raises exception if
anIndex < -Degree() or anIndex > (NbKnots() - Degree())
Note : Knots are numbered from -Degree (not from 1)
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Standard_Integer | NbPoles () const |
| returns number of poles (i.e. UpperIndex + 1)
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Standard_Real | Weight (const Standard_Integer anIndex) const |
| returns the weight referred to by anIndex, in [0,UpperIndex]
raises exception if anIndex < 0 or anIndex > UpperIndex()
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gp_Pnt | Pole (const Standard_Integer anIndex) const |
| returns the pole referred to by anIndex, in [0,UpperIndex]
raises exception if anIndex < 0 or anIndex > UpperIndex()
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gp_Pnt | TransformedPole (const Standard_Integer anIndex) const |
| returns the anIndex'th pole after applying Transf. Matrix
raises exception if an Index < 0 or an Index > UpperIndex()
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Standard_Real | UMin () const |
| returns starting parameter value
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Standard_Real | UMax () const |
| returns ending parameter value
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gp_XYZ | Normal () const |
| if the curve is nonplanar then (0, 0, 0) is returned
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