基础: Debian 7.5 Wheezy 64 bits - 从在线安装程序安装的 Qt 5.3;VTK 6.1 在 Qt 支持下成功编译和手动安装。
结果: 3D 球体显示在 3D QVTK 窗口中。乍一看,它看起来不错,但是当球体旋转时,球体的几个面板和部分变得透明。
描述:
尝试了 VTK for Qt 的基本官方示例:
在 main.cpp 中:
#include <QApplication>
#include <vtkAutoInit.h>
VTK_MODULE_INIT(vtkRenderingOpenGL);
VTK_MODULE_INIT(vtkInteractionStyle);
#include <vtkSmartPointer.h>
#include <vtkSphereSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkImageViewer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkInteractorStyleImage.h>
#include <vtkRenderer.h>
#include <vtkJPEGReader.h>
#include <QVTKWidget.h>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QVTKWidget widget;
widget.resize(256,256);
// Setup sphere
vtkSmartPointer<vtkSphereSource> sphereSource =
vtkSmartPointer<vtkSphereSource>::New();
sphereSource->Update();
vtkSmartPointer<vtkPolyDataMapper> sphereMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
sphereMapper->SetInputConnection(sphereSource->GetOutputPort());
vtkSmartPointer<vtkActor> sphereActor =
vtkSmartPointer<vtkActor>::New();
sphereActor->SetMapper(sphereMapper);
// Setup window
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
// Setup renderer
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
renderWindow->AddRenderer(renderer);
renderer->AddActor(sphereActor);
renderer->ResetCamera();
widget.SetRenderWindow(renderWindow);
widget.show();
return a.exec();
}
重要的是,RenderWindowUISingleInheritance 给出了相同的结果。
解决方案
最终代码如下:
#include <vtkAutoInit.h>
VTK_MODULE_INIT(vtkRenderingOpenGL);
VTK_MODULE_INIT(vtkInteractionStyle);
#include <vtkSmartPointer.h>
#include <vtkSphereSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkImageViewer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkInteractorStyleImage.h>
#include <vtkRenderer.h>
#include <vtkJPEGReader.h>
#include <QVTKWidget.h>
#include <vtkProperty.h>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QVTKWidget widget;
widget.resize(256,256);
// Setup sphere
vtkSmartPointer<vtkSphereSource> sphereSource =
vtkSmartPointer<vtkSphereSource>::New();
sphereSource->Update();
vtkSmartPointer<vtkPolyDataMapper> sphereMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
sphereMapper->SetInputConnection(sphereSource->GetOutputPort());
vtkSmartPointer<vtkActor> sphereActor =
vtkSmartPointer<vtkActor>::New();
sphereActor->GetProperty()->SetFrontfaceCulling(true);
sphereActor->SetMapper(sphereMapper);
// Setup window
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
// Setup renderer
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
renderWindow->AddRenderer(renderer);
renderer->AddActor(sphereActor);
renderer->ResetCamera();
widget.SetRenderWindow(renderWindow);
widget.show();
return a.exec();
}
注意添加:
#include <vtkProperty.h>
和
sphereActor->GetProperty()->SetFrontfaceCulling(true);