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/*=========================================================================
Program: Visualization Toolkit
Module: vtkFocalPlaneContourRepresentation.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 vtkFocalPlaneContourRepresentation
* @brief represent a contour drawn on the
* focal plane.
*
*
* The contour will stay on the focal plane irrespective of camera
* position/orientation changes. The class was written in order to be able to
* draw contours on a volume widget and have the contours overlaid on the
* focal plane in order to do contour segmentation. The superclass,
* vtkContourRepresentation handles contours that are drawn in actual world
* position co-ordinates, so they would rotate with the camera position/
* orientation changes
*
* @sa
* vtkContourWidget vtkHandleRepresentation vtkContourRepresentation
*/
#ifndef vtkFocalPlaneContourRepresentation_h
#define vtkFocalPlaneContourRepresentation_h
#include "vtkContourRepresentation.h"
#include "vtkInteractionWidgetsModule.h" // For export macro
class vtkHandleRepresentation;
class VTKINTERACTIONWIDGETS_EXPORT vtkFocalPlaneContourRepresentation
: public vtkContourRepresentation
{
public:
//@{
/**
* Standard VTK methods.
*/
vtkTypeMacro(vtkFocalPlaneContourRepresentation, vtkContourRepresentation);
void PrintSelf(ostream& os, vtkIndent indent) override;
//@}
/**
* Get the world position of the intermediate point at
* index idx between nodes n and (n+1) (or n and 0 if
* n is the last node and the loop is closed). Returns
* 1 on success or 0 if n or idx are out of range.
*/
int GetIntermediatePointWorldPosition(int n, int idx, double point[3]) override;
/**
* Get the world position of the intermediate point at
* index idx between nodes n and (n+1) (or n and 0 if
* n is the last node and the loop is closed). Returns
* 1 on success or 0 if n or idx are out of range.
*/
virtual int GetIntermediatePointDisplayPosition(int n, int idx, double point[3]);
/**
* Get the nth node's display position. Will return
* 1 on success, or 0 if there are not at least
* (n+1) nodes (0 based counting).
*/
int GetNthNodeDisplayPosition(int n, double pos[2]) override;
/**
* Get the nth node's world position. Will return
* 1 on success, or 0 if there are not at least
* (n+1) nodes (0 based counting).
*/
int GetNthNodeWorldPosition(int n, double pos[3]) override;
/**
* The class maintains its true contour locations based on display co-ords
* This method syncs the world co-ords data structure with the display co-ords.
*/
virtual void UpdateContourWorldPositionsBasedOnDisplayPositions();
/**
* The method must be called whenever the contour needs to be updated, usually
* from RenderOpaqueGeometry()
*/
int UpdateContour() override;
void UpdateLines(int index) override;
protected:
vtkFocalPlaneContourRepresentation();
~vtkFocalPlaneContourRepresentation() override;
private:
vtkFocalPlaneContourRepresentation(const vtkFocalPlaneContourRepresentation&) = delete;
void operator=(const vtkFocalPlaneContourRepresentation&) = delete;
};
#endif