vtk实战(五十一)—构建三维形体

#include <vtkSmartPointer.h>#include <vtkPolyDataMapper.h>#include <vtkTextMapper.h>#include <vtkActor.h>#include <vtkActor2D.h>#include <vtkRenderer.h>#include <vtkRenderWindow.h>#include <vtkRenderWindowInteractor.h>#include <vtkArrowSource.h>#include <vtkConeSource.h>#include <vtkCubeSource.h>#include <vtkCylinderSource.h>#include <vtkDiskSource.h>#include <vtkLineSource.h>#include <vtkRegularPolygonSource.h>#include <vtkSphereSource.h>#include <vector>int main(){    std::vector<vtkSmartPointer<vtkPolyDataAlgorithm> > geometricObjectSources;    geometricObjectSources.push_back(vtkSmartPointer<vtkArrowSource>::New());//箭头    geometricObjectSources.push_back(vtkSmartPointer<vtkConeSource>::New());//锥体    geometricObjectSources.push_back(vtkSmartPointer<vtkCubeSource>::New());//立方体    geometricObjectSources.push_back(vtkSmartPointer<vtkCylinderSource>::New());//缸体    geometricObjectSources.push_back(vtkSmartPointer<vtkDiskSource>::New());//转盘    geometricObjectSources.push_back(vtkSmartPointer<vtkLineSource>::New());//直线    geometricObjectSources.push_back(vtkSmartPointer<vtkRegularPolygonSource>::New());//正多面体    geometricObjectSources.push_back(vtkSmartPointer<vtkSphereSource>::New());//球体    std::vector<vtkSmartPointer<vtkRenderer> > renderers;    std::vector<vtkSmartPointer<vtkPolyDataMapper> > mappers;    std::vector<vtkSmartPointer<vtkActor> > actors;    std::vector<vtkSmartPointer<vtkTextMapper> > textmappers;    std::vector<vtkSmartPointer<vtkActor2D> > textactors;    for (unsigned int i = 0; i < geometricObjectSources.size(); i++)    {        geometricObjectSources[i]->Update();        mappers.push_back(vtkSmartPointer<vtkPolyDataMapper>::New());mappers[i]->SetInputConnection(geometricObjectSources[i]->GetOutputPort());        actors.push_back(vtkSmartPointer<vtkActor>::New());        actors[i]->SetMapper(mappers[i]);        textmappers.push_back(vtkSmartPointer<vtkTextMapper>::New());        textmappers[i]->SetInput(geometricObjectSources[i]->GetClassName());         textactors.push_back(vtkSmartPointer<vtkActor2D>::New());        textactors[i]->SetMapper(textmappers[i]);        textactors[i]->SetPosition(10, 10);    }    // 设置格网承载形体    int gridCols = 3;    int gridRows = 3;    // 定义渲染范围    int rendererSize = 200;    vtkSmartPointer<vtkRenderWindow> renderWindow =        vtkSmartPointer<vtkRenderWindow>::New();    renderWindow->SetSize(rendererSize*gridCols, rendererSize*gridRows);    vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =        vtkSmartPointer<vtkRenderWindowInteractor>::New();    for (double row = 0; row < gridRows; row++)    {        for (double col = 0; col < gridCols; col++)        {            double index = row*gridCols + col;            //为每个cell定义渲染器            vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();            renderer->SetBackground(.1, .2, .3);            double viewport[4] = {                ((col)* rendererSize) / (gridCols * rendererSize),                ((gridRows - (row + 1)) * rendererSize) / (gridRows * rendererSize),                ((col + 1)              * rendererSize) / (gridCols * rendererSize),                ((gridRows - (row)) * rendererSize) / (gridRows * rendererSize) };            renderer->SetViewport(viewport);            if (index < geometricObjectSources.size())            {                renderer->AddActor(actors[index]);                renderer->AddActor(textactors[index]);            }            renderWindow->AddRenderer(renderer);        }    }    vtkSmartPointer<vtkRenderWindowInteractor> interactor =        vtkSmartPointer<vtkRenderWindowInteractor>::New();    interactor->SetRenderWindow(renderWindow);    renderWindow->Render();    interactor->Start();    return 0;}