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common/vtkTensor.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkTensor.h,v $
00005   Language:  C++
00006 
00007 
00008 Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
00009 All rights reserved.
00010 
00011 Redistribution and use in source and binary forms, with or without
00012 modification, are permitted provided that the following conditions are met:
00013 
00014  * Redistributions of source code must retain the above copyright notice,
00015    this list of conditions and the following disclaimer.
00016 
00017  * Redistributions in binary form must reproduce the above copyright notice,
00018    this list of conditions and the following disclaimer in the documentation
00019    and/or other materials provided with the distribution.
00020 
00021  * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
00022    of any contributors may be used to endorse or promote products derived
00023    from this software without specific prior written permission.
00024 
00025  * Modified source versions must be plainly marked as such, and must not be
00026    misrepresented as being the original software.
00027 
00028 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
00029 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00030 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00031 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
00032 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00033 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00034 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00035 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00036 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00037 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00038 
00039 =========================================================================*/
00056 #ifndef __vtkTensor_h
00057 #define __vtkTensor_h
00058 
00059 #include "vtkObject.h"
00060 
00061 class VTK_EXPORT vtkTensor : public vtkObject
00062 {
00063 public:
00064   static vtkTensor *New();
00065   vtkTypeMacro(vtkTensor,vtkObject);
00066 
00068   void Initialize();
00069 
00071   float GetComponent(int i, int j) {return this->T[i+3*j];};
00072 
00074   void SetComponent(int i, int j, float v) {if (i > 2 || j > 2) {vtkErrorMacro("trying to set tensor component i or j > 2: i = " << i << ", j = " << j); return;}; this->T[i+3*j] = v;};
00075 
00077   void AddComponent(int i, int j, float v) { if (i > 2 || j > 2) {vtkErrorMacro("trying to add tensor component i or j > 2: i = " << i << ", j = " << j); return;}; this->T[i+3*j] += v;};
00078 
00081   float *GetColumn(int j) { if (j > 2) {vtkErrorMacro("trying to get tensor column j > 2: j = " << j); return NULL;}; return this->T + 3*j;};
00082 
00084   void DeepCopy(vtkTensor *t);
00085 
00086 #ifndef VTK_REMOVE_LEGACY_CODE
00087 
00088   void DeepCopy(vtkTensor &t);
00089 #endif
00090 
00092   operator float*() {return this->T;};
00093 
00095   float *T;
00096   
00097 protected: 
00098   vtkTensor();
00099   ~vtkTensor() {};
00100   vtkTensor(const vtkTensor&) {};
00101   void operator=(const vtkTensor&) {};
00102 
00103   float Storage[9];
00104 };
00105 
00106 inline void vtkTensor::Initialize()
00107 {
00108   for (int j=0; j<3; j++)
00109     {
00110     for (int i=0; i<3; i++)
00111       {
00112       this->T[i+j*3] = 0.0;
00113       }
00114     }
00115 }
00116 
00117 inline void vtkTensor::DeepCopy(vtkTensor *t)
00118 {
00119   for (int j=0; j < 3; j++)
00120     {
00121     for (int i=0; i < 3; i++)
00122       {
00123       this->T[i+3*j] = t->T[i+3*j];
00124       }
00125     }
00126 }
00127 
00128 #endif

Generated on Wed Nov 21 12:26:54 2001 for VTK by doxygen1.2.11.1 written by Dimitri van Heesch, © 1997-2001