vtk学习11：vtk的图像（vtkimageviewer2）显示

        vtk中主要通过vtkimageviewer2类来显示图像；它提供了一个简单而强大的界面，使用户能够加载、显示和交互地浏览二维或三维图像数据。

#include "vtkAutoInit.h" 
VTK_MODULE_INIT(vtkRenderingOpenGL2);
VTK_MODULE_INIT(vtkInteractionStyle);


#include <vtkSmartPointer.h>
#include <vtkImageViewer2.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkDICOMImageReader.h>

int main()
{
	vtkSmartPointer<vtkDICOMImageReader> reader =
		vtkSmartPointer<vtkDICOMImageReader>::New();

	reader->SetFileName("自己设置");
	//开始读取
	reader->Update();

	vtkSmartPointer<vtkImageViewer2> imageViewer =
		vtkSmartPointer<vtkImageViewer2>::New();
	imageViewer->SetInputData(reader->GetOutput());

	vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
		vtkSmartPointer<vtkRenderWindowInteractor>::New();
	imageViewer->SetupInteractor(renderWindowInteractor);

	imageViewer->SetColorLevel(500);//设置窗位为500
	imageViewer->SetColorWindow(2000);//设置窗宽为2000
	imageViewer->SetSlice(300);//设置切片索引
	imageViewer->SetSliceOrientationToXY();//设置切片方向
	imageViewer->Render();

	imageViewer->GetRenderer()->SetBackground(1.0, 1.0, 1.0);
	imageViewer->SetSize(0, 480);
	imageViewer->GetRenderWindow()->SetWindowName("test");

	renderWindowInteractor->Start();

	return EXIT_SUCCESS;

}