vtk渲染管线Chap02.4

书章节2.4管线

VTK两个重要概念，一个是数据的可视化表达，一个是可视化管线。

2.4_vtkPipelineDemo.cpp如下

//VTK INIT With Opengl2
#include <vtkAutoInit.h>
VTK_MODULE_INIT(vtkRenderingOpenGL2)
VTK_MODULE_INIT(vtkInteractionStyle)

#include <vtkRenderWindow.h>
#include <vtkSmartPointer.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkInteractorStyleTrackballCamera.h>
#include <vtkCylinderSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkJPEGReader.h>
#include <vtkTexture.h>
#include <vtkPlaneSource.h>
#include <vtkStructuredPointsReader.h>
#include <vtkMarchingCubes.h>
#include <vtkTransform.h>

int main()
{
    vtkSmartPointer<vtkStructuredPointsReader> reader = vtkSmartPointer<vtkStructuredPointsReader>::New();
    reader->SetFileName("..\\data\\head.vtk");

    vtkSmartPointer<vtkMarchingCubes> marchingCubes = vtkSmartPointer<vtkMarchingCubes>::New();
    marchingCubes->SetInputConnection(reader->GetOutputPort());
    marchingCubes->SetValue(0,500);

    vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
    mapper->SetInputConnection(marchingCubes->GetOutputPort());

    vtkSmartPointer<vtkTransform> transform = vtkSmartPointer<vtkTransform>::New();
    transform->PostMultiply();
    transform->RotateZ(180);
    transform->RotateX(90);

    vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();
    actor->SetMapper(mapper);
    actor->SetUserTransform(transform);

    vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
    renderer->AddActor(actor);
    //renderer->SetBackground(0.1, 0.2, 0.4);

    vtkSmartPointer<vtkRenderWindow> renWin = vtkSmartPointer<vtkRenderWindow>::New();
    renWin->AddRenderer(renderer);
    renWin->SetSize(500, 500);
    renWin->SetWindowName("Cylinder");

    vtkSmartPointer<vtkRenderWindowInteractor> iren = vtkSmartPointer<vtkRenderWindowInteractor>::New();
    iren->SetRenderWindow(renWin);

    vtkSmartPointer<vtkInteractorStyleTrackballCamera> style = vtkSmartPointer<vtkInteractorStyleTrackballCamera>::New();
    iren->SetInteractorStyle(style);
    
    renWin->Render();
    iren->Initialize();
    iren->Start();

    return 0;
}

运行效果

模型文件head.vtk可以从https://gitee.com/chen227/vtkprojects/blob/master/Chap02/data/head.vtk下载

源码
https://gitee.com/chen227/vtkprojects/tree/master/Chap02