BSplineBasis.hh

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/*===========================================================================*\
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\*===========================================================================*/


#ifndef ACG_BSPLINEBASIS_HH_
#define ACG_BSPLINEBASIS_HH_

#include <vector>
#include <ACG/Math/VectorT.hh>

namespace ACG {


template<typename Scalar>
Vec2i
bsplineSpan(Scalar _t,
  int _degree,
  const std::vector<Scalar>& _knots);


template<typename Scalar>
void
bsplineBasisFunctions( std::vector<Scalar>& _N,
  const Vec2i& _span,
  Scalar _t,
  const std::vector<Scalar>& _knots);



template<typename Scalar>
void
bsplineBasisDerivatives( std::vector<Scalar>& _ders,
  const Vec2i& _span,
  Scalar _t,
  int _der,
  const std::vector<Scalar>& _knots,
  std::vector<Scalar>* _functionVals);


template<typename Scalar>
Scalar
bsplineBasisFunction(int _i,
  int _degree,
  Scalar _t,
  const std::vector<Scalar>& _knots);

template<typename Scalar>
Scalar
bsplineBasisDerivative(int _i,
  int _degree,
  Scalar _t,
  int _der,
  const std::vector<Scalar>& _knots);



} /* namespace ACG */

#if defined(INCLUDE_TEMPLATES) && !defined(ACG_BSPLINEBASIS_C)
#define ACG_BSPLINEBASIS_TEMPLATES
#include "BSplineBasis.cc"
#endif

#endif /* ACG_BSPLINEBASIS_HH_ */