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98 lines
3.3 KiB
C
98 lines
3.3 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkDijkstraImageContourLineInterpolator.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 vtkDijkstraImageContourLineInterpolator
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* @brief Contour interpolator for placing points on an image.
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*
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*
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* vtkDijkstraImageContourLineInterpolator interpolates and places
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* contour points on images. The class interpolates nodes by
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* computing a graph laying on the image data. By graph, we mean
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* that the line interpolating the two end points traverses along
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* pixels so as to form a shortest path. A Dijkstra algorithm is
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* used to compute the path.
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*
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* The class is meant to be used in conjunction with
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* vtkImageActorPointPlacer. One reason for this coupling is a
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* performance issue: both classes need to perform a cell pick, and
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* coupling avoids multiple cell picks (cell picks are slow). Another
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* issue is that the interpolator may need to set the image input to
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* its vtkDijkstraImageGeodesicPath ivar.
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*
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* @sa
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* vtkContourWidget vtkContourLineInterpolator vtkDijkstraImageGeodesicPath
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*/
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#ifndef vtkDijkstraImageContourLineInterpolator_h
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#define vtkDijkstraImageContourLineInterpolator_h
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#include "vtkContourLineInterpolator.h"
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#include "vtkInteractionWidgetsModule.h" // For export macro
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class vtkDijkstraImageGeodesicPath;
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class vtkImageData;
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class VTKINTERACTIONWIDGETS_EXPORT vtkDijkstraImageContourLineInterpolator
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: public vtkContourLineInterpolator
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{
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public:
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//@{
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/**
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* Standard methods for instances of this class.
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*/
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vtkTypeMacro(vtkDijkstraImageContourLineInterpolator, vtkContourLineInterpolator);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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//@}
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static vtkDijkstraImageContourLineInterpolator* New();
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/**
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* Subclasses that wish to interpolate a line segment must implement this.
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* For instance vtkBezierContourLineInterpolator adds nodes between idx1
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* and idx2, that allow the contour to adhere to a bezier curve.
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*/
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int InterpolateLine(vtkRenderer* ren, vtkContourRepresentation* rep, int idx1, int idx2) override;
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//@{
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/**
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* Set the image data for the vtkDijkstraImageGeodesicPath.
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* If not set, the interpolator uses the image data input to the image actor.
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* The image actor is obtained from the expected vtkImageActorPointPlacer.
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*/
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virtual void SetCostImage(vtkImageData*);
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vtkGetObjectMacro(CostImage, vtkImageData);
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//@}
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//@{
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/**
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* access to the internal dijkstra path
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*/
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vtkGetObjectMacro(DijkstraImageGeodesicPath, vtkDijkstraImageGeodesicPath);
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//@}
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protected:
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vtkDijkstraImageContourLineInterpolator();
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~vtkDijkstraImageContourLineInterpolator() override;
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vtkImageData* CostImage;
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vtkDijkstraImageGeodesicPath* DijkstraImageGeodesicPath;
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private:
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vtkDijkstraImageContourLineInterpolator(const vtkDijkstraImageContourLineInterpolator&) = delete;
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void operator=(const vtkDijkstraImageContourLineInterpolator&) = delete;
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};
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#endif
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