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/*****************************************************************************
* $CAMITK_LICENCE_BEGIN$
*
* CamiTK - Computer Assisted Medical Intervention ToolKit
* (c) 2001-2024 Univ. Grenoble Alpes, CNRS, Grenoble INP - UGA, TIMC, 38000 Grenoble, France
*
* Visit http://camitk.imag.fr for more information
*
* This file is part of CamiTK.
*
* CamiTK is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* CamiTK is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with CamiTK. If not, see <http://www.gnu.org/licenses/>.
*
* $CAMITK_LICENCE_END$
****************************************************************************/
// CamiTK includes
#include "PickMe.h"
#include <vtkCell.h>
using namespace camitk;
// --------------- Constructor -------------------
PickMe::PickMe(const QString& file) : VtkMeshComponent(file) {
// initially all the point data have a value of 0.0 (everything is blue)
// when the user pick a cell or a point in 3D, the point data are modified
// using the point index (for point picking) or average of cell's point index
// (for cell picking)
// -> the mesh starts to show colors!
initPointData();
}
// --------------- initPointData -------------------
void PickMe::initPointData() {
// create a new vtkDataArray to store the demo value
demoPointData = vtkSmartPointer<vtkDoubleArray>::New();
int numberOfPoints = getPointSet()->GetNumberOfPoints();
demoPointData->SetNumberOfValues(numberOfPoints);
demoPointData->SetName("Pick Me Data");
demoPointData->FillComponent(0, 0.0);
// add the data to the mesh
addPointData(demoPointData->GetName(), demoPointData);
}
// -------------------- pointPicked --------------------
void PickMe::pointPicked(vtkIdType pointId, bool sel/* picking does not change the selection state, do not bother with the 2nd parameter*/) {
MeshComponent::pointPicked(pointId, sel);
// picking show demo point data
demoPointData->SetValue(pointId, 1.0 - double (pointId) / double (getPointSet()->GetNumberOfPoints()));
refreshPointData();
}
// -------------------- cellPicked --------------------
void PickMe::cellPicked(vtkIdType cellId, bool sel /* picking does not change the selection state, do not bother with the 2nd parameter*/) {
MeshComponent::cellPicked(cellId, sel);
// change data for all cell points
vtkSmartPointer<vtkCell> c = getPointSet()->GetCell(cellId);
for (vtkIdType i = 0; i < c->GetNumberOfPoints(); i++) {
vtkIdType pointId = c->GetPointId(i);
demoPointData->SetValue(pointId, double (pointId) / double (getPointSet()->GetNumberOfPoints()));
}
refreshPointData();
}
// -------------------- refreshPointData --------------------
void PickMe::refreshPointData() {
// force the modification flag of the vtkDoubleArray so that the range is going to be recomputed
// This is needed so that VTK can "discover" that the data have changed (calls to SetValue do not modify the internal time stamp)
demoPointData->Modified();
// force the data visualization to be updated
setDataRepresentationVisibility(MeshComponent::POINTS, demoPointData->GetName(), true);
}
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