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105 lines
3.5 KiB
105 lines
3.5 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkImplicitDataSet.h,v $
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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// .NAME vtkImplicitDataSet - treat a dataset as if it were an implicit function
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// .SECTION Description
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// vtkImplicitDataSet treats any type of dataset as if it were an
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// implicit function. This means it computes a function value and
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// gradient. vtkImplicitDataSet is a concrete implementation of
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// vtkImplicitFunction.
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//
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// vtkImplicitDataSet computes the function (at the point x) by performing
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// cell interpolation. That is, it finds the cell containing x, and then
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// uses the cell's interpolation functions to compute an interpolated
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// scalar value at x. (A similar approach is used to find the
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// gradient, if requested.) Points outside of the dataset are assigned
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// the value of the ivar OutValue, and the gradient value OutGradient.
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// .SECTION Caveats
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// Any type of dataset can be used as an implicit function as long as it
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// has scalar data associated with it.
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// .SECTION See Also
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// vtkImplicitFunction vtkImplicitVolume vtkClipPolyData vtkCutter
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// vtkImplicitWindowFunction
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#ifndef __vtkImplicitDataSet_h
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#define __vtkImplicitDataSet_h
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#include "vtkImplicitFunction.h"
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class vtkDataSet;
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class VTK_FILTERING_EXPORT vtkImplicitDataSet : public vtkImplicitFunction
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{
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public:
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vtkTypeRevisionMacro(vtkImplicitDataSet,vtkImplicitFunction);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description
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// Construct an vtkImplicitDataSet with no initial dataset; the OutValue
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// set to a large negative number; and the OutGradient set to (0,0,1).
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static vtkImplicitDataSet *New();
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// Description:
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// Return the MTime also considering the DataSet dependency.
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unsigned long GetMTime();
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// Description
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// Evaluate the implicit function. This returns the interpolated scalar value
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// at x[3].
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double EvaluateFunction(double x[3]);
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double EvaluateFunction(double x, double y, double z)
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{return this->vtkImplicitFunction::EvaluateFunction(x, y, z); } ;
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// Description
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// Evaluate implicit function gradient.
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void EvaluateGradient(double x[3], double n[3]);
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// Description:
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// Set / get the dataset used for the implicit function evaluation.
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virtual void SetDataSet(vtkDataSet*);
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vtkGetObjectMacro(DataSet,vtkDataSet);
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// Description:
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// Set / get the function value to use for points outside of the dataset.
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vtkSetMacro(OutValue,double);
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vtkGetMacro(OutValue,double);
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// Description:
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// Set / get the function gradient to use for points outside of the dataset.
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vtkSetVector3Macro(OutGradient,double);
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vtkGetVector3Macro(OutGradient,double);
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protected:
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vtkImplicitDataSet();
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~vtkImplicitDataSet();
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virtual void ReportReferences(vtkGarbageCollector*);
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vtkDataSet *DataSet;
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double OutValue;
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double OutGradient[3];
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double *Weights; //used to compute interpolation weights
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int Size; //keeps track of length of weights array
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private:
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vtkImplicitDataSet(const vtkImplicitDataSet&); // Not implemented.
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void operator=(const vtkImplicitDataSet&); // Not implemented.
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};
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#endif
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