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Charles PIGNEROL
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Version 5.5.0. Class vtkConstrainedPointWidget2 and associated test point_widget2.
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‎cmake/version.cmake‎

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#
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set (VTK_CONTRIB_MAJOR_VERSION "5")
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set (VTK_CONTRIB_MINOR_VERSION "4")
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set (VTK_CONTRIB_RELEASE_VERSION "3")
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set (VTK_CONTRIB_MINOR_VERSION "5")
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set (VTK_CONTRIB_RELEASE_VERSION "0")
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set (VTK_CONTRIB_VERSION ${VTK_CONTRIB_MAJOR_VERSION}.${VTK_CONTRIB_MINOR_VERSION}.${VTK_CONTRIB_RELEASE_VERSION})
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‎src/VtkContrib/public/VtkContrib/vtkConstrainedPointWidget2.h‎

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/*
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* Widget de saisie d'un point dans l'espace.
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* @author Charles PIGNEROL, CEA/DAM/DSSI
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* @date 24/06/2024
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*/
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#ifndef VTK_CONSTRAINED_POINT_WIDGET_2_H
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#define VTK_CONSTRAINED_POINT_WIDGET_2_H
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#include <vtkHandleWidget.h>
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#include <vtkSphereHandleRepresentation.h>
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class vtkConstrainedPointHandleRepresentation2;
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/**
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* <P>Un widget pour saisir interactivement un point dont déplacement peut être contraint le long d'un axe euclidien.</P>
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* <P>Par défaut le point, matérialisé par une sphère, est déplacé dans le plan de l'écran, mais on peut contraindre le déplacement
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* le long de l'axe des abscisses, ordonnées ou élévations en pressant respectivement et simultanément la touche 'x', 'y' ou 'z'
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* (insensibilité à la casse). Une pression sur la touche 'espace' provoque un retour au déplacement dans le plan.
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*
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* <P>tests/point_widget2.cpp est un exemple d'utilisation avec callback permettant de connaître à tout moment la nouvelle position du point.</P>
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*/
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class vtkConstrainedPointWidget2 : public vtkHandleWidget
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{
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public :
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vtkTypeMacro(vtkConstrainedPointWidget2,vtkHandleWidget)
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/**
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* Créé une représentation de type vtkConstrainedPointHandleRepresentation2.
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*/
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virtual void CreateDefaultRepresentation ( );
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/**
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* Instanciation de la classe.
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*/
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static vtkConstrainedPointWidget2* New ( );
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/**
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* @return La représentation de l'instance.
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*/
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vtkConstrainedPointHandleRepresentation2* GetConstrainedPointRepresentation ( );
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/**
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* Modifie l'axe de contrainte de déplacement.
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*/
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virtual void OnChar ( );
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private :
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/**
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* Constructeur. S'associe une instance de vtkConstrainedPointHandleRepresentation2 pour représenter le point et effectuer son positionnement.
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*/
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vtkConstrainedPointWidget2 ( );
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/**
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* Destructeur. RAS.
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*/
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virtual ~vtkConstrainedPointWidget2 ( );
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/**
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* Constructeur et opérateur = : interdits.
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*/
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vtkConstrainedPointWidget2 (const vtkConstrainedPointWidget2&);
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vtkConstrainedPointWidget2& operator = (const vtkConstrainedPointWidget2&);
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}; // class vtkConstrainedPointWidget2
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/**
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* <P>Classe de représentation/positionnement d'un point sur une grille non structurée.</P>
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* <P>Sa méthode (héritée) <I>GetWorldPosition (double [3])</I> permet de récupére les coordonnées courantes du point saisi.</P>
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*/
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class vtkConstrainedPointHandleRepresentation2 : public vtkSphereHandleRepresentation
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{
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public :
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vtkTypeMacro(vtkConstrainedPointHandleRepresentation2,vtkSphereHandleRepresentation)
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public :
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/**
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* Instanciation de la classe.
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*/
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static vtkConstrainedPointHandleRepresentation2* New ( );
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/**
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* Versions simplifiées de la gestion interactive de la saisie.
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*/
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virtual void WidgetInteraction (double eventPos [2]);
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/**
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* @param Nouvel axe de contrainte de déplacement (0 -> X, 1 -> Y, 2 -> Z, autre => déplacement dans le plan de l'écran).
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*/
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virtual void SetConstraintAxis (int axis);
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private :
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/**
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* Constructeur : RAS.
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*/
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vtkConstrainedPointHandleRepresentation2 ( );
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/**
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* Destructeur. RAS.
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*/
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virtual ~vtkConstrainedPointHandleRepresentation2 ( );
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/**
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* Constructeur de copie, opérateur = : interdits.
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*/
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vtkConstrainedPointHandleRepresentation2 (const vtkConstrainedPointHandleRepresentation2&);
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vtkConstrainedPointHandleRepresentation2& operator = (const vtkConstrainedPointHandleRepresentation2&);
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}; // class vtkConstrainedPointHandleRepresentation2
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#endif // VTK_CONSTRAINED_POINT_WIDGET_2_H

‎src/VtkContrib/vtkConstrainedPointWidget2.cpp‎

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#include "VtkContrib/vtkConstrainedPointWidget2.h"
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#include <vtkCellPicker.h>
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#include <vtkRenderer.h>
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#include <vtkRenderWindowInteractor.h>
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#include <assert.h>
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#include <iostream>
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using namespace std;
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// =============================================================================
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// LA CLASSE vtkConstrainedPointWidget2
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// =============================================================================
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vtkConstrainedPointWidget2::vtkConstrainedPointWidget2 ( )
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: vtkHandleWidget ( )
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{
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} // vtkConstrainedPointWidget2::vtkConstrainedPointWidget2
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vtkConstrainedPointWidget2::vtkConstrainedPointWidget2 (const vtkConstrainedPointWidget2&)
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: vtkHandleWidget ( )
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{
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assert (0 && "vtkConstrainedPointWidget2 copy constructor is not allowed.");
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} // vtkConstrainedPointWidget2::vtkConstrainedPointWidget2
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vtkConstrainedPointWidget2& vtkConstrainedPointWidget2::operator = (const vtkConstrainedPointWidget2&)
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{
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assert (0 && "vtkConstrainedPointWidget2 assignment operator is not allowed.");
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return *this;
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} // vtkConstrainedPointWidget2::vtkConstrainedPointWidget2
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vtkConstrainedPointWidget2::~vtkConstrainedPointWidget2 ( )
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{
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} // vtkConstrainedPointWidget2::~vtkConstrainedPointWidget2
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void vtkConstrainedPointWidget2::CreateDefaultRepresentation ( )
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{
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if (0 == WidgetRep)
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{
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vtkConstrainedPointHandleRepresentation2* rep = vtkConstrainedPointHandleRepresentation2::New ( );
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WidgetRep = rep;
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rep->SetTolerance (1);
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rep->BuildRepresentation ( );
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SetWidgetRepresentation (rep);
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} // if (0 == WidgetRep)
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} // vtkConstrainedPointWidget2::CreateDefaultRepresentation
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vtkConstrainedPointWidget2* vtkConstrainedPointWidget2::New ( )
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{
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return new vtkConstrainedPointWidget2 ( );
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} // vtkConstrainedPointWidget2::New
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vtkConstrainedPointHandleRepresentation2* vtkConstrainedPointWidget2::GetConstrainedPointRepresentation ( )
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{
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return dynamic_cast<vtkConstrainedPointHandleRepresentation2*>(GetRepresentation ( ));
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} // vtkConstrainedPointWidget2::GetConstrainedPointRepresentation
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void vtkConstrainedPointWidget2::OnChar ( )
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{
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if ((0 != this->Interactor) && (0 != GetConstrainedPointRepresentation ( )))
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{
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switch (this->Interactor->GetKeyCode ( ))
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{
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case ' ' : GetConstrainedPointRepresentation ( )->SetConstraintAxis (-1); break;
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case 'x' :
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case 'X' : GetConstrainedPointRepresentation ( )->SetConstraintAxis (0); break;
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case 'y' :
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case 'Y' : GetConstrainedPointRepresentation ( )->SetConstraintAxis (1); break;
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case 'z' :
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case 'Z' : GetConstrainedPointRepresentation ( )->SetConstraintAxis (2); break;
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default : vtkHandleWidget::OnChar ( );
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} // switch (this->Interactor->GetKeyCode ( ))
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} // if ((0 != this->Interactor) && (0 != GetConstrainedPointRepresentation ( )))
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} // vtkConstrainedPointWidget2::OnChar
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// =============================================================================
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// LA CLASSE vtkConstrainedPointHandleRepresentation2
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// =============================================================================
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vtkConstrainedPointHandleRepresentation2::vtkConstrainedPointHandleRepresentation2 ( )
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: vtkSphereHandleRepresentation ( )
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{
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} // vtkConstrainedPointHandleRepresentation2::vtkConstrainedPointHandleRepresentation2
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vtkConstrainedPointHandleRepresentation2::vtkConstrainedPointHandleRepresentation2 (const vtkConstrainedPointHandleRepresentation2&)
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: vtkSphereHandleRepresentation ( )
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{
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assert (0 && "vtkConstrainedPointHandleRepresentation2 copy constructor is not allowed.");
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} // vtkConstrainedPointHandleRepresentation2::vtkConstrainedPointHandleRepresentation2
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vtkConstrainedPointHandleRepresentation2& vtkConstrainedPointHandleRepresentation2::operator = (const vtkConstrainedPointHandleRepresentation2&)
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{
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assert (0 && "vtkConstrainedPointHandleRepresentation2 assignment operator is not allowed.");
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return *this;
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} // vtkConstrainedPointHandleRepresentation2::vtkConstrainedPointHandleRepresentation2
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vtkConstrainedPointHandleRepresentation2::~vtkConstrainedPointHandleRepresentation2 ( )
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{
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} // vtkConstrainedPointHandleRepresentation2::~vtkConstrainedPointHandleRepresentation2
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vtkConstrainedPointHandleRepresentation2* vtkConstrainedPointHandleRepresentation2::New ( )
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{
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return new vtkConstrainedPointHandleRepresentation2 ( );
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} // vtkConstrainedPointHandleRepresentation2::New
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void vtkConstrainedPointHandleRepresentation2::WidgetInteraction (double eventPos [2])
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{ // Code vtkSphereHandleRepresentation::WidgetInteraction VTK 7.1.1 légèrement retouché
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// Do different things depending on state Calculations everybody does
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double focalPoint[4], pickPoint[4], prevPickPoint[4], startPickPoint[4], z;
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// Compute the two points defining the motion vector
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vtkInteractorObserver::ComputeWorldToDisplay (this->Renderer, this->LastPickPosition[0], this->LastPickPosition[1], this->LastPickPosition[2], focalPoint);
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z = focalPoint[2];
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vtkInteractorObserver::ComputeDisplayToWorld (this->Renderer, this->LastEventPosition[0],this->LastEventPosition[1], z, prevPickPoint);
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vtkInteractorObserver::ComputeDisplayToWorld (this->Renderer, eventPos[0], eventPos[1], z, pickPoint);
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// Process the motion
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if (this->InteractionState == vtkHandleRepresentation::Selecting || this->InteractionState == vtkHandleRepresentation::Translating)
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{
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if (!this->WaitingForMotion || this->WaitCount++ > 3)
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{
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this->ConstraintAxis = this->DetermineConstraintAxis (this->ConstraintAxis, pickPoint);
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if (this->InteractionState == vtkHandleRepresentation::Selecting && !this->TranslationMode)
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{
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this->MoveFocus(prevPickPoint, pickPoint);
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}
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else
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{
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this->Translate(prevPickPoint, pickPoint);
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}
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}
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}
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else if (this->InteractionState == vtkHandleRepresentation::Scaling)
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{
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this->Scale (prevPickPoint, pickPoint, eventPos);
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}
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// Book keeping
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this->LastEventPosition[0] = eventPos[0];
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this->LastEventPosition[1] = eventPos[1];
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this->Modified ( );
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} // vtkConstrainedPointHandleRepresentation2::WidgetInteraction
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void vtkConstrainedPointHandleRepresentation2::SetConstraintAxis (int axis)
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{
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this->ConstraintAxis = axis;
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switch (axis)
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{
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case 0 : // x
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case 1 : // y
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case 2 : // z
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ConstrainedOn ( );
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break;
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default :
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ConstrainedOff ( );
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} // switch (axis)
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} // vtkConstrainedPointHandleRepresentation2::SetConstraintAxis
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‎src/tests/CMakeLists.txt‎

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include (${GUIToolkitsVariables_CMAKE_DIR}/workarounds.cmake)
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add_executable (point_widget point_widget.cpp)
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add_executable (point_widget2 point_widget2.cpp)
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add_executable (trihedrons trihedrons.cpp)
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add_executable (torus torus.cpp)
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target_include_directories (point_widget PRIVATE ../VtkContrib/public ${CMAKE_CURRENT_SOURCE_DIR})
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target_compile_options (point_widget PRIVATE ${SHARED_CFLAGS}) # Requested by Qt ...
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target_link_libraries (point_widget PUBLIC VtkContrib)
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target_include_directories (point_widget2 PRIVATE ../VtkContrib/public ${CMAKE_CURRENT_SOURCE_DIR})
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target_compile_options (point_widget2 PRIVATE ${SHARED_CFLAGS}) # Requested by Qt ...
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target_link_libraries (point_widget2 PUBLIC VtkContrib)
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target_include_directories (trihedrons PRIVATE ../VtkContrib/public ${CMAKE_CURRENT_SOURCE_DIR})
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target_compile_options (trihedrons PRIVATE ${SHARED_CFLAGS}) # Requested by Qt ...
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target_link_libraries (trihedrons PUBLIC VtkContrib)
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# INSTALL_RPATH modifie le rpath pour les libs internes au projet :
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set_target_properties (point_widget PROPERTIES INSTALL_RPATH_USE_LINK_PATH 1 INSTALL_RPATH ${CMAKE_PACKAGE_RPATH_DIR})
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set_target_properties (point_widget2 PROPERTIES INSTALL_RPATH_USE_LINK_PATH 1 INSTALL_RPATH ${CMAKE_PACKAGE_RPATH_DIR})
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set_target_properties (trihedrons PROPERTIES INSTALL_RPATH_USE_LINK_PATH 1 INSTALL_RPATH ${CMAKE_PACKAGE_RPATH_DIR})
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set_target_properties (torus PROPERTIES INSTALL_RPATH_USE_LINK_PATH 1 INSTALL_RPATH ${CMAKE_PACKAGE_RPATH_DIR})

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