00001 /*========================================================================= 00002 00003 Program: Visualization Toolkit 00004 Module: $RCSfile: vtkFiniteDifferenceGradientEstimator.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 =========================================================================*/ 00040 00069 #ifndef __vtkFiniteDifferenceGradientEstimator_h 00070 #define __vtkFiniteDifferenceGradientEstimator_h 00071 00072 #include "vtkEncodedGradientEstimator.h" 00073 00074 class VTK_RENDERING_EXPORT vtkFiniteDifferenceGradientEstimator : public vtkEncodedGradientEstimator 00075 { 00076 public: 00077 vtkTypeMacro(vtkFiniteDifferenceGradientEstimator,vtkEncodedGradientEstimator); 00078 void PrintSelf( ostream& os, vtkIndent index ); 00079 00082 static vtkFiniteDifferenceGradientEstimator *New(); 00083 00085 00087 vtkSetMacro( SampleSpacingInVoxels, int ); 00088 vtkGetMacro( SampleSpacingInVoxels, int ); 00090 00091 // The sample spacing between samples taken for the normal estimation 00092 int SampleSpacingInVoxels; 00093 00094 protected: 00095 vtkFiniteDifferenceGradientEstimator(); 00096 ~vtkFiniteDifferenceGradientEstimator(); 00097 00098 00100 void UpdateNormals( void ); 00101 private: 00102 vtkFiniteDifferenceGradientEstimator(const vtkFiniteDifferenceGradientEstimator&); // Not implemented. 00103 void operator=(const vtkFiniteDifferenceGradientEstimator&); // Not implemented. 00104 }; 00105 00106 00107 #endif