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Common/vtkImplicitFunction.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkImplicitFunction.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 =========================================================================*/
00073 #ifndef __vtkImplicitFunction_h
00074 #define __vtkImplicitFunction_h
00075 
00076 #include "vtkObject.h"
00077 #include "vtkAbstractTransform.h"
00078 
00079 class VTK_COMMON_EXPORT vtkImplicitFunction : public vtkObject
00080 {
00081 public:
00082   vtkTypeMacro(vtkImplicitFunction,vtkObject);
00083   void PrintSelf(ostream& os, vtkIndent indent);
00084 
00087   unsigned long GetMTime();
00088 
00090 
00092   float FunctionValue(const float x[3]);
00093   float FunctionValue(float x, float y, float z) {
00094     float xyz[3] = {x, y, z}; return this->FunctionValue(xyz); };
00096 
00098 
00100   void FunctionGradient(const float x[3], float g[3]);
00101   float *FunctionGradient(const float x[3]) {
00102     this->FunctionGradient(x,this->ReturnValue);
00103     return this->ReturnValue; };
00104   float *FunctionGradient(float x, float y, float z) {
00105     float xyz[3] = {x, y, z}; return this->FunctionGradient(xyz); };
00107 
00109 
00111   vtkSetObjectMacro(Transform,vtkAbstractTransform);
00112   vtkGetObjectMacro(Transform,vtkAbstractTransform);
00114 
00116 
00120   virtual float EvaluateFunction(float x[3]) = 0;
00121   float EvaluateFunction(float x, float y, float z) {
00122     float xyz[3] = {x, y, z}; return this->EvaluateFunction(xyz); };
00124 
00129   virtual void EvaluateGradient(float x[3], float g[3]) = 0;
00130 
00131 protected:
00132   vtkImplicitFunction();
00133   ~vtkImplicitFunction();
00134 
00135   vtkAbstractTransform *Transform;
00136   float ReturnValue[3];
00137 private:
00138   vtkImplicitFunction(const vtkImplicitFunction&);  // Not implemented.
00139   void operator=(const vtkImplicitFunction&);  // Not implemented.
00140 };
00141 
00142 #endif

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