contourwidgetobserver.cpp

Go to the documentation of this file.

// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#include "contourwidgetobserver.h"
 
#include <vtkContourRepresentation.h>
#include <vtkContourWidget.h>
#include <vtkPolyData.h>
 
namespace VtkUtils {
 
ContourWidgetObserver::ContourWidgetObserver(QObject* parent)
    : AbstractWidgetObserver(parent) {
    m_polyData = vtkSmartPointer<vtkPolyData>::New();
}
 
void ContourWidgetObserver::Execute(vtkObject* caller,
                                    unsigned long eventId,
                                    void* callData) {
    Q_UNUSED(eventId)
    Q_UNUSED(callData)
 
    vtkContourWidget* widget = reinterpret_cast<vtkContourWidget*>(caller);
    if (widget) {
        vtkContourRepresentation* rep = vtkContourRepresentation::SafeDownCast(
                widget->GetRepresentation());
        vtkPolyData* pd = rep->GetContourRepresentationAsPolyData();
        if (pd) {
            m_polyData->DeepCopy(pd);
            emit dataChanged(m_polyData);
        }
    }
}
 
}  // namespace VtkUtils