120 lines
3.6 KiB
C
120 lines
3.6 KiB
C
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkSplineRepresentation.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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* @class vtkSplineRepresentation
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* @brief representation for a spline.
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*
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* vtkSplineRepresentation is a vtkWidgetRepresentation for a spline.
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* This 3D widget defines a spline that can be interactively placed in a
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* scene. The spline has handles, the number of which can be changed, plus it
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* can be picked on the spline itself to translate or rotate it in the scene.
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* This is based on vtkSplineWidget.
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* @sa
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* vtkSplineWidget, vtkSplineWidget2
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*/
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#ifndef vtkSplineRepresentation_h
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#define vtkSplineRepresentation_h
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#include "vtkAbstractSplineRepresentation.h"
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#include "vtkInteractionWidgetsModule.h" // For export macro
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class vtkPointHandleSource;
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class VTKINTERACTIONWIDGETS_EXPORT vtkSplineRepresentation : public vtkAbstractSplineRepresentation
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{
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public:
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static vtkSplineRepresentation* New();
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vtkTypeMacro(vtkSplineRepresentation, vtkAbstractSplineRepresentation);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Set the number of handles for this widget,
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* while keeping a similar spline.
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*/
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virtual void SetNumberOfHandles(int npts) override;
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/**
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* Set the parametric spline object.
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*/
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void SetParametricSpline(vtkParametricSpline* spline) override;
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/**
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* Convenience method to allocate and set the handles from a vtkPoints
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* instance. If the first and last points are the same, the spline sets
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* Closed to the on InteractionState and disregards the last point, otherwise Closed
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* remains unchanged.
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*/
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void InitializeHandles(vtkPoints* points) override;
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/**
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* Method that satisfy vtkWidgetRepresentation API.
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* Updates the spline in relation with the handles positions
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* and updates vtkWidgetRepresentation::InitialLength
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* (useful for the sizing methods).
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*/
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void BuildRepresentation() override;
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protected:
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vtkSplineRepresentation();
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~vtkSplineRepresentation() override;
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/**
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* Specialized method to insert a handle on the spline.
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*/
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int InsertHandleOnLine(double* pos) override;
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/**
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* Delete all the handles.
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*/
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void ClearHandles();
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/**
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* Allocate/Reallocate the handles according
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* to npts.
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*/
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void AllocateHandles(int npts);
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/**
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* Create npts default handles.
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*/
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void CreateDefaultHandles(int npts);
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/**
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* Recreate the handles according to a
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* number of points equal to npts.
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* It uses the current spline to recompute
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* the positions of the new handles.
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*/
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void ReconfigureHandles(int npts);
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// Specialized methods to access handles
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vtkActor* GetHandleActor(int index) override;
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vtkHandleSource* GetHandleSource(int index) override;
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virtual int GetHandleIndex(vtkProp* prop) override;
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private:
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vtkSplineRepresentation(const vtkSplineRepresentation&) = delete;
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void operator=(const vtkSplineRepresentation&) = delete;
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void RebuildRepresentation();
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// Glyphs representing hot spots (e.g., handles)
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std::vector<vtkSmartPointer<vtkPointHandleSource>> PointHandles;
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std::vector<vtkSmartPointer<vtkActor>> HandleActors;
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};
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#endif
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