vtk三维体模型渲染

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86

string Trim(string& str) {     //str.find_first_not_of(" \t\r\n"),在字符串str中从索引0开始，返回首次不匹配"\t\r\n"的位置     str.erase(0, str.find_first_not_of(" \t\r\n"));     str.erase(str.find_last_not_of(" \t\r\n") + 1);     return str; }   int main() {     vtkSmartPointer<vtkNamedColors> color = vtkSmartPointer<vtkNamedColors>::New();       vtkSmartPointer<vtkPoints> ps = vtkSmartPointer<vtkPoints>::New();     double x, y, z;     ifstream fin("D:\\QTData\\Vtk-new\\ceshi2.csv"); //打开文件流操作-绝对路径     string line;     while (getline(fin, line))   //整行读取，换行符“\n”区分，遇到文件尾标志eof终止读取     {         //cout <<"原始字符串："<< line << endl; //整行输出         istringstream sin(line); //将整行字符串line读入到字符串流istringstream中         vector<string> fields; //声明一个字符串向量         string field;         while (getline(sin, field, ',')) //将字符串流sin中的字符读入到field字符串中，以逗号为分隔符         {             fields.push_back(field); //将刚刚读取的字符串添加到向量fields中         }           string sx = Trim(fields[0]);         string sy = Trim(fields[1]);         string sz = Trim(fields[2]);           //字符串转换成double型数字         istringstream streamx, streamy, streamz;         streamx.str(sx), streamy.str(sy), streamz.str(sz);         streamx >> x, streamy >> y, streamz >> z;         ps->InsertNextPoint(x, y, z); //新读取的数据赋予点的几何结构     }      fin.close();  //关闭文件       vtkSmartPointer<vtkPolyData>polydata = vtkSmartPointer<vtkPolyData>::New();     polydata->SetPoints(ps);       vtkSmartPointer<vtkDelaunay3D> delaunay3D = vtkSmartPointer<vtkDelaunay3D>::New();     delaunay3D->SetInputData(polydata);     delaunay3D->Update();       vtkSmartPointer<vtkDataSetMapper> delaunayMapper = vtkSmartPointer<vtkDataSetMapper>::New();     delaunayMapper->SetInputConnection(delaunay3D->GetOutputPort());       vtkSmartPointer<vtkActor> delaunayActor = vtkSmartPointer<vtkActor>::New();     delaunayActor->SetMapper(delaunayMapper);     delaunayActor->GetProperty()->SetColor(color->GetColor3d("banana").GetData());     delaunayActor->GetProperty()->EdgeVisibilityOn();         vtkSmartPointer<vtkVertexGlyphFilter> glyphFilter = vtkSmartPointer<vtkVertexGlyphFilter>::New();     glyphFilter->SetInputData(delaunay3D->GetOutput());       vtkSmartPointer<vtkPolyDataMapper> pointMapper = vtkSmartPointer<vtkPolyDataMapper>::New();     pointMapper->SetInputConnection(glyphFilter->GetOutputPort());       vtkSmartPointer<vtkActor> pointActor = vtkSmartPointer<vtkActor>::New();     pointActor->GetProperty()->SetColor(color->GetColor3d("Tomato").GetData());     pointActor->GetProperty()->SetPointSize(5);     pointActor->SetMapper(pointMapper);         vtkSmartPointer<vtkRenderer> delaunayRenderer = vtkSmartPointer<vtkRenderer>::New();     vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New();     renderWindow->SetSize(900, 900);         renderWindow->AddRenderer(delaunayRenderer);     vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =         vtkSmartPointer<vtkRenderWindowInteractor>::New();     renderWindowInteractor->SetRenderWindow(renderWindow);         delaunayRenderer->AddActor(delaunayActor);     delaunayRenderer->AddActor(pointActor);     delaunayRenderer->SetBackground(color->GetColor3d("Mint").GetData());       // Render and interact     renderWindowInteractor->Start();     return EXIT_SUCCESS; }