vtkBoxWidgetCustomCallback.cpp

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#include "vtkBoxWidgetCustomCallback.h"
 
#include <vtkActor.h>
#include <vtkBoxRepresentation.h>
#include <vtkBoxWidget.h>
#include <vtkTransform.h>
 
vtkBoxWidgetCustomCallback *vtkBoxWidgetCustomCallback::New() {
    return new vtkBoxWidgetCustomCallback;
}
 
void vtkBoxWidgetCustomCallback::SetActor(vtkSmartPointer<vtkActor> actor) {
    m_actor = actor;
}
 
void vtkBoxWidgetCustomCallback::Execute(vtkObject *caller,
                                         unsigned long,
                                         void *) {
    if (m_preview) {
        // 将调用该回调函数的调用者caller指针，转换为vtkBoxWidget2类型对象指针
        vtkSmartPointer<vtkBoxWidget> boxWidget =
                vtkBoxWidget::SafeDownCast(caller);
        // vtkSmartPointer<vtkBoxWidget2>
        // boxWidget=reinterpret_cast<vtkBoxWidget2>(caller);这样转换不可以，vtkBoxWidget可以
        vtkSmartPointer<vtkTransform> t = vtkSmartPointer<vtkTransform>::New();
        // 将boxWidget中的变换矩阵保存在t中
        //  vtkBoxRepresentation::SafeDownCast(boxWidget->GetRepresentation())->GetTransform(t);
        boxWidget->GetTransform(t);
        // this->m_actor->SetUserTransform(t);
    }
}