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116 lines
3.5 KiB
C
116 lines
3.5 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkTreeMapLayout.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 vtkTreeMapLayout
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* @brief layout a vtkTree into a tree map
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*
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*
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* vtkTreeMapLayout assigns rectangular regions to each vertex in the tree,
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* creating a tree map. The data is added as a data array with four
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* components per tuple representing the location and size of the
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* rectangle using the format (Xmin, Xmax, Ymin, Ymax).
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*
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* This algorithm relies on a helper class to perform the actual layout.
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* This helper class is a subclass of vtkTreeMapLayoutStrategy.
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*
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* @par Thanks:
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* Thanks to Brian Wylie and Ken Moreland from Sandia National Laboratories
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* for help developing this class.
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*
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* @par Thanks:
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* Tree map concept comes from:
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* Shneiderman, B. 1992. Tree visualization with tree-maps: 2-d space-filling approach.
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* ACM Trans. Graph. 11, 1 (Jan. 1992), 92-99.
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*/
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#ifndef vtkTreeMapLayout_h
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#define vtkTreeMapLayout_h
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#include "vtkInfovisLayoutModule.h" // For export macro
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#include "vtkTreeAlgorithm.h"
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class vtkTreeMapLayoutStrategy;
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class VTKINFOVISLAYOUT_EXPORT vtkTreeMapLayout : public vtkTreeAlgorithm
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{
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public:
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static vtkTreeMapLayout* New();
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vtkTypeMacro(vtkTreeMapLayout, vtkTreeAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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//@{
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/**
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* The field name to use for storing the rectangles for each vertex.
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* The rectangles are stored in a quadruple float array
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* (minX, maxX, minY, maxY).
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*/
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vtkGetStringMacro(RectanglesFieldName);
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vtkSetStringMacro(RectanglesFieldName);
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//@}
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/**
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* The array to use for the size of each vertex.
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*/
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virtual void SetSizeArrayName(const char* name)
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{
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this->SetInputArrayToProcess(0, 0, 0, vtkDataObject::FIELD_ASSOCIATION_VERTICES, name);
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}
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//@{
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/**
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* The strategy to use when laying out the tree map.
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*/
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vtkGetObjectMacro(LayoutStrategy, vtkTreeMapLayoutStrategy);
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void SetLayoutStrategy(vtkTreeMapLayoutStrategy* strategy);
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//@}
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/**
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* Returns the vertex id that contains pnt (or -1 if no one contains it)
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*/
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vtkIdType FindVertex(float pnt[2], float* binfo = nullptr);
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/**
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* Return the min and max 2D points of the
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* vertex's bounding box
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*/
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void GetBoundingBox(vtkIdType id, float* binfo);
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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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protected:
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vtkTreeMapLayout();
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~vtkTreeMapLayout() override;
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char* RectanglesFieldName;
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vtkTreeMapLayoutStrategy* LayoutStrategy;
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int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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private:
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vtkTreeMapLayout(const vtkTreeMapLayout&) = delete;
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void operator=(const vtkTreeMapLayout&) = delete;
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};
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#endif
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