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BSplineBasis.hh
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40\*===========================================================================*/
41
42
43
44#ifndef ACG_BSPLINEBASIS_HH_
45#define ACG_BSPLINEBASIS_HH_
46
47#include <vector>
48#include <ACG/Math/VectorT.hh>
49
50namespace ACG {
51
52
59template<typename Scalar>
61bsplineSpan(Scalar _t,
62 int _degree,
63 const std::vector<Scalar>& _knots);
64
65
76template<typename Scalar>
77void
78bsplineBasisFunctions( std::vector<Scalar>& _N,
79 const Vec2i& _span,
80 Scalar _t,
81 const std::vector<Scalar>& _knots);
82
83
84
97template<typename Scalar>
98void
99bsplineBasisDerivatives( std::vector<Scalar>& _ders,
100 const Vec2i& _span,
101 Scalar _t,
102 int _der,
103 const std::vector<Scalar>& _knots,
104 std::vector<Scalar>* _functionVals);
105
106
118template<typename Scalar>
119Scalar
121 int _degree,
122 Scalar _t,
123 const std::vector<Scalar>& _knots);
124
137template<typename Scalar>
138Scalar
140 int _degree,
141 Scalar _t,
142 int _der,
143 const std::vector<Scalar>& _knots);
144
145
146
147} /* namespace ACG */
148
149#if defined(INCLUDE_TEMPLATES) && !defined(ACG_BSPLINEBASIS_C)
150#define ACG_BSPLINEBASIS_TEMPLATES
151#include "BSplineBasis.cc"
152#endif
153
154#endif /* ACG_BSPLINEBASIS_HH_ */
Namespace providing different geometric functions concerning angles.
void bsplineBasisDerivatives(std::vector< Scalar > &_ders, const Vec2i &_span, Scalar _t, int _der, const std::vector< Scalar > &_knots, std::vector< Scalar > *_functionVals)
Compute derivatives of basis functions in a span.
Scalar bsplineBasisFunction(int _i, int _degree, Scalar _t, const std::vector< Scalar > &_knots)
Evaluate a single basis function.
void bsplineBasisFunctions(std::vector< Scalar > &_N, const Vec2i &_span, Scalar _t, const std::vector< Scalar > &_knots)
Evaluate basis functions in a span.
Vec2i bsplineSpan(Scalar _t, int _degree, const std::vector< Scalar > &_knots)
Find the span of a parameter value.
VectorT< signed int, 2 > Vec2i
Definition VectorT.hh:98
Scalar bsplineBasisDerivative(int _i, int _degree, Scalar _t, int _der, const std::vector< Scalar > &_knots)
Compute derivative of a single basis function.