/usr/include/vtk-7.1/vtkConvexHull2D.h is in libvtk7-dev 7.1.1+dfsg1-2.
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Program: Visualization Toolkit
Module: vtkConvexHull2D.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/**
* @class vtkConvexHull2D
* @brief Produce filled convex hulls around a set of points.
*
*
* Produces a vtkPolyData comprised of a filled polygon of the convex hull
* of the input points. You may alternatively choose to output a bounding
* rectangle. Static methods are provided that calculate a (counter-clockwise)
* hull based on a set of input points.
*
* To help maintain the property of <i>guaranteed visibility</i> hulls may be
* artificially scaled by setting MinHullSizeInWorld. This is particularly
* helpful in the case that there are only one or two points as it avoids
* producing a degenerate polygon. This setting is also available as an
* argument to the static methods.
*
* Setting a vtkRenderer on the filter enables the possibility to set
* MinHullSizeInDisplay to the desired number of display pixels to cover in
* each of the x- and y-dimensions.
*
* Setting OutlineOn() additionally produces an outline of the hull on output
* port 1.
*
* @attention
* This filter operates in the x,y-plane and as such works best with an
* interactor style that does not permit camera rotation such as
* vtkInteractorStyleRubberBand2D.
*
* @par Thanks:
* Thanks to Colin Myers, University of Leeds for providing this implementation.
*/
#ifndef vtkConvexHull2D_h
#define vtkConvexHull2D_h
#include "vtkRenderingAnnotationModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"
#include "vtkSmartPointer.h" // needed for ivars
class vtkCoordinate;
class vtkPoints;
class vtkPolygon;
class vtkPolyLine;
class vtkRenderer;
class vtkTransform;
class vtkTransformPolyDataFilter;
class VTKRENDERINGANNOTATION_EXPORT vtkConvexHull2D: public vtkPolyDataAlgorithm
{
public:
static vtkConvexHull2D *New();
vtkTypeMacro(vtkConvexHull2D, vtkPolyDataAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
//@{
/**
* Scale the hull by the amount specified. Defaults to 1.0.
*/
vtkGetMacro(ScaleFactor, double);
vtkSetMacro(ScaleFactor, double);
//@}
//@{
/**
* Produce an outline (polyline) of the hull on output port 1.
*/
vtkGetMacro(Outline, bool);
vtkSetMacro(Outline, bool);
vtkBooleanMacro(Outline, bool);
//@}
enum HullShapes {
BoundingRectangle = 0,
ConvexHull
};
//@{
/**
* Set the shape of the hull to BoundingRectangle or ConvexHull.
*/
vtkGetMacro(HullShape, int);
vtkSetClampMacro(HullShape, int, 0, 1);
//@}
//@{
/**
* Set the minimum x,y-dimensions of each hull in world coordinates. Defaults
* to 1.0. Set to 0.0 to disable.
*/
vtkSetClampMacro(MinHullSizeInWorld, double, 0.0, VTK_DOUBLE_MAX);
vtkGetMacro(MinHullSizeInWorld, double);
//@}
//@{
/**
* Set the minimum x,y-dimensions of each hull in pixels. You must also set a
* vtkRenderer. Defaults to 1. Set to 0 to disable.
*/
vtkSetClampMacro(MinHullSizeInDisplay, int, 0, VTK_INT_MAX);
vtkGetMacro(MinHullSizeInDisplay, int);
//@}
//@{
/**
* Renderer needed for MinHullSizeInDisplay calculation. Not reference counted.
*/
void SetRenderer(vtkRenderer* renderer);
vtkRenderer* GetRenderer();
//@}
/**
* The modified time of this filter.
*/
virtual vtkMTimeType GetMTime();
//@{
/**
* Convenience methods to calculate a convex hull from a set of vtkPointS.
*/
static void CalculateBoundingRectangle(vtkPoints* inPoints,
vtkPoints* outPoints, double minimumHullSize=1.0);
static void CalculateConvexHull(vtkPoints* inPoints, vtkPoints* outPoints,
double minimumHullSize=1.0);
//@}
protected:
vtkConvexHull2D();
~vtkConvexHull2D();
/**
* This is called by the superclass. This is the method you should override.
*/
int RequestData(vtkInformation *, vtkInformationVector **,
vtkInformationVector *);
private:
vtkConvexHull2D(const vtkConvexHull2D&) VTK_DELETE_FUNCTION;
void operator=(const vtkConvexHull2D&) VTK_DELETE_FUNCTION;
void ResizeHullToMinimumInDisplay(vtkPolyData* hullPolyData);
double ScaleFactor;
bool Outline;
int HullShape;
int MinHullSizeInDisplay;
double MinHullSizeInWorld;
vtkRenderer* Renderer;
vtkSmartPointer<vtkCoordinate> Coordinate;
vtkSmartPointer<vtkTransform> Transform;
vtkSmartPointer<vtkTransform> OutputTransform;
vtkSmartPointer<vtkTransformPolyDataFilter> OutputTransformFilter;
vtkSmartPointer<vtkPolyLine> OutlineSource;
vtkSmartPointer<vtkPolygon> HullSource;
};
#endif // vtkConvexHull2D_h
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