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77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkDashedStreamLine.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 vtkDashedStreamLine
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* @brief generate constant-time dashed streamline in arbitrary dataset
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*
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* vtkDashedStreamLine is a filter that generates a "dashed" streamline for
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* an arbitrary dataset. The streamline consists of a series of dashes, each
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* of which represents (approximately) a constant time increment. Thus, in the
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* resulting visual representation, relatively long dashes represent areas of
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* high velocity, and small dashes represent areas of low velocity.
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*
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* vtkDashedStreamLine introduces the instance variable DashFactor.
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* DashFactor interacts with its superclass' instance variable StepLength to
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* create the dashes. DashFactor is the percentage of the StepLength line
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* segment that is visible. Thus, if the DashFactor=0.75, the dashes will be
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* "three-quarters on" and "one-quarter off".
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*
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* @sa
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* vtkStreamer vtkStreamLine vtkStreamPoints
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*/
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#ifndef vtkDashedStreamLine_h
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#define vtkDashedStreamLine_h
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#include "vtkFiltersFlowPathsModule.h" // For export macro
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#include "vtkStreamLine.h"
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#ifndef VTK_LEGACY_REMOVE
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class VTKFILTERSFLOWPATHS_EXPORT vtkDashedStreamLine : public vtkStreamLine
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{
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public:
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static vtkDashedStreamLine *New();
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vtkTypeMacro(vtkDashedStreamLine,vtkStreamLine);
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void PrintSelf(ostream& os, vtkIndent indent);
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//@{
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/**
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* For each dash, specify the fraction of the dash that is "on". A factor
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* of 1.0 will result in a continuous line, a factor of 0.5 will result in
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* dashed that are half on and half off.
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*/
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vtkSetClampMacro(DashFactor,double,0.01,1.0);
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vtkGetMacro(DashFactor,double);
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//@}
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protected:
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vtkDashedStreamLine();
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~vtkDashedStreamLine() {}
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// Convert streamer array into vtkPolyData
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virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
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// the fraction of on versus off in dash
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double DashFactor;
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private:
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vtkDashedStreamLine(const vtkDashedStreamLine&) VTK_DELETE_FUNCTION;
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void operator=(const vtkDashedStreamLine&) VTK_DELETE_FUNCTION;
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};
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#endif // VTK_LEGACY_REMOVE
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#endif
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