vtk实战(二十二)——写入PLY数据

写入斯坦福大学的”.ply”文件格式。
ply多边形数据格式见:
http://graphics.stanford.edu/data/3Dscanrep/
这种数据数据可以用二进制或ASCII表示。

#include <vtkPolyData.h>
#include <vtkPLYWriter.h>
#include <vtkPLYReader.h>
#include <vtkSmartPointer.h>
#include <vtkSphereSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>

int main()
{
    std::string filename = "resu.ply";
    vtkSmartPointer<vtkSphereSource> sphereSource =
        vtkSmartPointer<vtkSphereSource>::New();
    sphereSource->Update();

    vtkSmartPointer<vtkPLYWriter> plyWriter =
        vtkSmartPointer<vtkPLYWriter>::New();
    plyWriter->SetFileName(filename.c_str());
    plyWriter->SetInputConnection(sphereSource->GetOutputPort());
    plyWriter->Write();

    vtkSmartPointer<vtkPLYReader> reader =
        vtkSmartPointer<vtkPLYReader>::New();
    reader->SetFileName(filename.c_str());
    reader->Update();

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

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

    vtkSmartPointer<vtkRenderer> renderer =
        vtkSmartPointer<vtkRenderer>::New();
    vtkSmartPointer<vtkRenderWindow> renderWindow =
        vtkSmartPointer<vtkRenderWindow>::New();
    renderWindow->AddRenderer(renderer);
    vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
        vtkSmartPointer<vtkRenderWindowInteractor>::New();
    renderWindowInteractor->SetRenderWindow(renderWindow);

    renderer->AddActor(actor);
    renderer->SetBackground(.3, .6, .3); 

    renderWindow->Render();
    renderWindowInteractor->Start();
    return 0;
}

代码链接：