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122 lines
3.5 KiB
C
122 lines
3.5 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkImplicitDataSet.h
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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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/**
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* @class vtkImplicitDataSet
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* @brief treat a dataset as if it were an implicit function
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*
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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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*
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* @warning
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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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*
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* @sa
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* vtkImplicitFunction vtkImplicitVolume vtkClipPolyData vtkCutter
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* vtkImplicitWindowFunction
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*/
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#ifndef vtkImplicitDataSet_h
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#define vtkImplicitDataSet_h
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#include "vtkCommonDataModelModule.h" // For export macro
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#include "vtkImplicitFunction.h"
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class vtkDataSet;
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class VTKCOMMONDATAMODEL_EXPORT vtkImplicitDataSet : public vtkImplicitFunction
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{
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public:
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vtkTypeMacro(vtkImplicitDataSet, vtkImplicitFunction);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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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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*/
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static vtkImplicitDataSet* New();
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/**
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* Return the MTime also considering the DataSet dependency.
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*/
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vtkMTimeType GetMTime() override;
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//@{
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/**
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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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*/
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using vtkImplicitFunction::EvaluateFunction;
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double EvaluateFunction(double x[3]) override;
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//@}
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/**
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* Evaluate implicit function gradient.
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*/
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void EvaluateGradient(double x[3], double n[3]) override;
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//@{
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/**
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* Set / get the dataset used for the implicit function evaluation.
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*/
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virtual void SetDataSet(vtkDataSet*);
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vtkGetObjectMacro(DataSet, vtkDataSet);
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//@}
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//@{
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/**
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* Set / get the function value to use for points outside of the dataset.
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*/
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vtkSetMacro(OutValue, double);
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vtkGetMacro(OutValue, double);
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//@}
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//@{
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/**
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* Set / get the function gradient to use for points outside of the dataset.
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*/
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vtkSetVector3Macro(OutGradient, double);
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vtkGetVector3Macro(OutGradient, double);
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//@}
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protected:
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vtkImplicitDataSet();
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~vtkImplicitDataSet() override;
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void ReportReferences(vtkGarbageCollector*) override;
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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&) = delete;
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void operator=(const vtkImplicitDataSet&) = delete;
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};
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#endif
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