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quadrature.h
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1/*
2 * Copyright (c) 2010-2015: G-CSC, Goethe University Frankfurt
3 * Author: Andreas Vogel
4 *
5 * This file is part of UG4.
6 *
7 * UG4 is free software: you can redistribute it and/or modify it under the
8 * terms of the GNU Lesser General Public License version 3 (as published by the
9 * Free Software Foundation) with the following additional attribution
10 * requirements (according to LGPL/GPL v3 §7):
11 *
12 * (1) The following notice must be displayed in the Appropriate Legal Notices
13 * of covered and combined works: "Based on UG4 (www.ug4.org/license)".
14 *
15 * (2) The following notice must be displayed at a prominent place in the
16 * terminal output of covered works: "Based on UG4 (www.ug4.org/license)".
17 *
18 * (3) The following bibliography is recommended for citation and must be
19 * preserved in all covered files:
20 * "Reiter, S., Vogel, A., Heppner, I., Rupp, M., and Wittum, G. A massively
21 * parallel geometric multigrid solver on hierarchically distributed grids.
22 * Computing and visualization in science 16, 4 (2013), 151-164"
23 * "Vogel, A., Reiter, S., Rupp, M., Nägel, A., and Wittum, G. UG4 -- a novel
24 * flexible software system for simulating pde based models on high performance
25 * computers. Computing and visualization in science 16, 4 (2013), 165-179"
26 *
27 * This program is distributed in the hope that it will be useful,
28 * but WITHOUT ANY WARRANTY; without even the implied warranty of
29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 * GNU Lesser General Public License for more details.
31 */
32
33#ifndef __H__UG__LIB_DISC__QUADRATURE__
34#define __H__UG__LIB_DISC__QUADRATURE__
35
36#include "common/common.h"
37#include "common/math/ugmath.h"
38
39namespace ug{
40
41// Doxygen group
43
55
57
69template <int TDim>
71 public:
73 static const int dim = TDim;
74
77
80
81 public:
84 m_pvPoint(NULL), m_pvWeight(NULL),
85 m_numPoints(0), m_order(0)
86 {}
87
89 virtual ~QuadratureRule() {}
90
92 inline size_t size() const {return m_numPoints;}
93
95 inline const MathVector<dim>& point(size_t i) const
96 {
97 UG_ASSERT(i < size(), "Wrong index");
98 return m_pvPoint[i];
99 }
100
102 inline const MathVector<dim>* points() const {return m_pvPoint;}
103
105 inline number weight(size_t i) const
106 {
107 UG_ASSERT(i < size(), "Wrong index");
108 return m_pvWeight[i];
109 }
110
112 inline const number* weights() const {return m_pvWeight;}
113
115 inline size_t order() const {return m_order;}
116
117 protected:
120 size_t m_numPoints;
122};
123
125
126} // namespace ug
127
128#endif /* __H__UG__LIB_DISC__QUADRATURE__ */
a mathematical Vector with N entries.
Definition math_vector.h:97
provides quadrature rule for a Reference Dimension
Definition quadrature.h:70
number weight_type
Type of weights.
Definition quadrature.h:79
size_t m_numPoints
number of points
Definition quadrature.h:120
number weight(size_t i) const
return the i'th weight
Definition quadrature.h:105
static const int dim
Dimension of Reference Element.
Definition quadrature.h:73
const number * m_pvWeight
Weights.
Definition quadrature.h:119
size_t order() const
returns the order
Definition quadrature.h:115
size_t size() const
number of integration points
Definition quadrature.h:92
QuadratureRule()
constructor
Definition quadrature.h:83
const MathVector< dim > * m_pvPoint
Integration points.
Definition quadrature.h:118
virtual ~QuadratureRule()
destructor
Definition quadrature.h:89
const MathVector< dim > & point(size_t i) const
returns i'th integration point
Definition quadrature.h:95
int m_order
Order of rule.
Definition quadrature.h:121
const number * weights() const
returns all weights in an array of size()
Definition quadrature.h:112
MathVector< dim > position_type
Position Type in Reference Element Space.
Definition quadrature.h:76
const MathVector< dim > * points() const
returns all positions in an array of size()
Definition quadrature.h:102
#define UG_ASSERT(expr, msg)
Definition assert.h:70
double number
Definition types.h:124
the ug namespace