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125 lines
3.4 KiB
C
125 lines
3.4 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkGraphLayout.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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Copyright 2008 Sandia Corporation.
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Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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the U.S. Government retains certain rights in this software.
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-------------------------------------------------------------------------*/
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/**
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* @class vtkGraphLayout
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* @brief layout a graph in 2 or 3 dimensions
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*
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*
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* This class is a shell for many graph layout strategies which may be set
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* using the SetLayoutStrategy() function. The layout strategies do the
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* actual work.
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*
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* .SECTION Thanks
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* Thanks to Brian Wylie from Sandia National Laboratories for adding incremental
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* layout capabilities.
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*/
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#ifndef vtkGraphLayout_h
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#define vtkGraphLayout_h
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#include "vtkGraphAlgorithm.h"
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#include "vtkInfovisLayoutModule.h" // For export macro
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class vtkAbstractTransform;
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class vtkEventForwarderCommand;
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class vtkGraphLayoutStrategy;
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class VTKINFOVISLAYOUT_EXPORT vtkGraphLayout : public vtkGraphAlgorithm
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{
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public:
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static vtkGraphLayout* New();
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vtkTypeMacro(vtkGraphLayout, vtkGraphAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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//@{
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/**
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* The layout strategy to use during graph layout.
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*/
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void SetLayoutStrategy(vtkGraphLayoutStrategy* strategy);
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vtkGetObjectMacro(LayoutStrategy, vtkGraphLayoutStrategy);
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//@}
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/**
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* Ask the layout algorithm if the layout is complete
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*/
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virtual int IsLayoutComplete();
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/**
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* Get the modification time of the layout algorithm.
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*/
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vtkMTimeType GetMTime() override;
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//@{
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/**
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* Set the ZRange for the output data.
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* If the initial layout is planar (i.e. all z coordinates are zero),
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* the coordinates will be evenly spaced from 0.0 to ZRange.
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* The default is zero, which has no effect.
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*/
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vtkGetMacro(ZRange, double);
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vtkSetMacro(ZRange, double);
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//@}
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//@{
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/**
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* Transform the graph vertices after the layout.
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*/
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vtkGetObjectMacro(Transform, vtkAbstractTransform);
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virtual void SetTransform(vtkAbstractTransform* t);
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//@}
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//@{
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/**
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* Whether to use the specified transform after layout.
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*/
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vtkSetMacro(UseTransform, bool);
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vtkGetMacro(UseTransform, bool);
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vtkBooleanMacro(UseTransform, bool);
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//@}
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protected:
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vtkGraphLayout();
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~vtkGraphLayout() override;
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vtkGraphLayoutStrategy* LayoutStrategy;
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/**
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* This intercepts events from the strategy object and re-emits them
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* as if they came from the layout engine itself.
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*/
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vtkEventForwarderCommand* EventForwarder;
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int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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private:
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vtkGraph* LastInput;
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vtkGraph* InternalGraph;
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vtkMTimeType LastInputMTime;
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bool StrategyChanged;
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double ZRange;
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vtkAbstractTransform* Transform;
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bool UseTransform;
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vtkGraphLayout(const vtkGraphLayout&) = delete;
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void operator=(const vtkGraphLayout&) = delete;
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};
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#endif
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