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93 lines
2.7 KiB
C
93 lines
2.7 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkGeoEdgeStrategy.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 vtkGeoEdgeStrategy
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* @brief Layout graph edges on a globe as arcs.
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*
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*
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* vtkGeoEdgeStrategy produces arcs for each edge in the input graph.
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* This is useful for viewing lines on a sphere (e.g. the earth).
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* The arcs may "jump" above the sphere's surface using ExplodeFactor.
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*/
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#ifndef vtkGeoEdgeStrategy_h
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#define vtkGeoEdgeStrategy_h
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#include "vtkEdgeLayoutStrategy.h"
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#include "vtkInfovisLayoutModule.h" // For export macro
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class VTKINFOVISLAYOUT_EXPORT vtkGeoEdgeStrategy : public vtkEdgeLayoutStrategy
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{
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public:
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static vtkGeoEdgeStrategy* New();
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vtkTypeMacro(vtkGeoEdgeStrategy, vtkEdgeLayoutStrategy);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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//@{
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/**
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* The base radius used to determine the earth's surface.
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* Default is the earth's radius in meters.
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* TODO: Change this to take in a vtkGeoTerrain to get altitude.
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*/
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vtkSetMacro(GlobeRadius, double);
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vtkGetMacro(GlobeRadius, double);
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//@}
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//@{
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/**
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* Factor on which to "explode" the arcs away from the surface.
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* A value of 0.0 keeps the values on the surface.
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* Values larger than 0.0 push the arcs away from the surface by a distance
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* proportional to the distance between the points.
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* The default is 0.2.
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*/
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vtkSetMacro(ExplodeFactor, double);
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vtkGetMacro(ExplodeFactor, double);
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//@}
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//@{
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/**
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* The number of subdivisions in the arc.
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* The default is 20.
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*/
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vtkSetMacro(NumberOfSubdivisions, int);
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vtkGetMacro(NumberOfSubdivisions, int);
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//@}
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/**
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* Perform the layout.
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*/
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void Layout() override;
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protected:
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vtkGeoEdgeStrategy();
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~vtkGeoEdgeStrategy() override {}
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double GlobeRadius;
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double ExplodeFactor;
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int NumberOfSubdivisions;
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private:
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vtkGeoEdgeStrategy(const vtkGeoEdgeStrategy&) = delete;
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void operator=(const vtkGeoEdgeStrategy&) = delete;
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};
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#endif
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