ITK  4.4.0
Insight Segmentation and Registration Toolkit
itkFEMElement2DC0LinearQuadrilateral.h
Go to the documentation of this file.
1 /*=========================================================================
2  *
3  * Copyright Insight Software Consortium
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0.txt
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  *
17  *=========================================================================*/
18 
19 #ifndef __itkFEMElement2DC0LinearQuadrilateral_h
20 #define __itkFEMElement2DC0LinearQuadrilateral_h
21 
22 #include "itkFEMElementStd.h"
23 
24 namespace itk
25 {
26 namespace fem
27 {
57 {
58 public:
65 
68 
69  // ////////////////////////////////////////////////////////////////////////
75 
77  virtual void GetIntegrationPointAndWeight(unsigned int i, VectorType & pt, Float & w, unsigned int order) const;
78 
80  virtual unsigned int GetNumberOfIntegrationPoints(unsigned int order) const;
81 
82  // ////////////////////////////////////////////////////////////////////////
88  virtual VectorType ShapeFunctions(const VectorType & pt) const;
89 
91  virtual void ShapeFunctionDerivatives(const VectorType & pt, MatrixType & shapeD) const;
92 
94  virtual bool GetLocalFromGlobalCoordinates(const VectorType & globalPt, VectorType & localPt) const;
95 
97  void InterpolationFunctions( const VectorType & pcoords, VectorType & sf) const;
98 
100  void InterpolationDerivs(const VectorType & pcoords, VectorType & derivs) const;
101 
103  Float Determinant2x2(const VectorType & c1, const VectorType & c2) const;
104 
105 protected:
106  virtual void PopulateEdgeIds(void);
107 
108  virtual void PrintSelf(std::ostream& os, Indent indent) const;
109 
110 private:
111 
112 };
113 }
114 } // end namespace itk::fem
115 
116 #endif // #ifndef __itkFEMElement2DC0LinearQuadrilateral_h
117