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/*=========================================================================
Program: Visualization Toolkit
Module: vtkPolyLineRepresentation.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 vtkPolyLineRepresentation
* @brief vtkWidgetRepresentation for a poly line.
*
* vtkPolyLineRepresentation is a vtkCurveRepresentation for a poly
* line. This 3D widget defines a poly line that can be interactively
* placed in a scene. The poly line has handles, the number of which
* can be changed, plus the widget can be picked on the poly line
* itself to translate or rotate it in the scene.
* Based on vtkCurveRepresentation
* @sa
* vtkSplineRepresentation
*/
#ifndef vtkPolyLineRepresentation_h
#define vtkPolyLineRepresentation_h
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkCurveRepresentation.h"
class vtkPolyLineSource;
class vtkPoints;
class vtkPolyData;
class VTKINTERACTIONWIDGETS_EXPORT vtkPolyLineRepresentation : public vtkCurveRepresentation
{
public:
static vtkPolyLineRepresentation* New();
vtkTypeMacro(vtkPolyLineRepresentation, vtkCurveRepresentation);
void PrintSelf(ostream& os, vtkIndent indent);
/**
* Grab the polydata (including points) that defines the poly line.
* polydata consists of points and line segments between consecutive
* points. Points are guaranteed to be up-to-date when either the
* InteractionEvent or EndInteraction events are invoked. The user
* provides the vtkPolyData and the points and polyline are added to
* it.
*/
void GetPolyData(vtkPolyData *pd);
/**
* Set the number of handles for this widget.
*/
virtual void SetNumberOfHandles(int npts);
/**
* Get the positions of the handles.
*/
virtual vtkDoubleArray* GetHandlePositions();
/**
* Get the true length of the poly line. Calculated as the summed
* lengths of the individual straight line segments.
*/
double GetSummedLength();
/**
* Convenience method to allocate and set the handles from a
* vtkPoints instance. If the first and last points are the same,
* the poly line sets Closed to on and disregards the last point,
* otherwise Closed remains unchanged.
*/
virtual void InitializeHandles(vtkPoints* points);
/**
* Build the representation for the poly line.
*/
virtual void BuildRepresentation();
protected:
vtkPolyLineRepresentation();
~vtkPolyLineRepresentation();
// The poly line source
vtkPolyLineSource *PolyLineSource;
// Specialized method to insert a handle on the poly line.
virtual void InsertHandleOnLine(double* pos);
private:
vtkPolyLineRepresentation(const vtkPolyLineRepresentation&) VTK_DELETE_FUNCTION;
void operator=(const vtkPolyLineRepresentation&) VTK_DELETE_FUNCTION;
};
#endif
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