mirror of https://gitee.com/openkylin/vtk9.git
132 lines
3.1 KiB
C++
132 lines
3.1 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkTreeWriter.cxx
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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#include "vtkTreeWriter.h"
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#include "vtkByteSwap.h"
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#include "vtkCellArray.h"
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#include "vtkInformation.h"
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#include "vtkObjectFactory.h"
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#include "vtkTree.h"
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#if !defined(_WIN32) || defined(__CYGWIN__)
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#include <unistd.h> /* unlink */
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#else
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#include <io.h> /* unlink */
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#endif
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vtkStandardNewMacro(vtkTreeWriter);
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void vtkTreeWriter::WriteEdges(ostream& Stream, vtkTree* Tree)
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{
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for (vtkIdType e = 0; e < Tree->GetNumberOfEdges(); ++e)
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{
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vtkIdType parent = Tree->GetSourceVertex(e);
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vtkIdType child = Tree->GetTargetVertex(e);
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Stream << child << " " << parent << "\n";
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}
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}
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void vtkTreeWriter::WriteData()
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{
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ostream* fp;
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vtkTree* const input = this->GetInput();
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vtkDebugMacro(<< "Writing vtk tree data...");
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if (!(fp = this->OpenVTKFile()) || !this->WriteHeader(fp))
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{
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if (fp)
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{
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if (this->FileName)
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{
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vtkErrorMacro("Ran out of disk space; deleting file: " << this->FileName);
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this->CloseVTKFile(fp);
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unlink(this->FileName);
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}
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else
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{
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this->CloseVTKFile(fp);
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vtkErrorMacro("Could not read memory header. ");
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}
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}
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return;
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}
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*fp << "DATASET TREE\n";
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bool error_occurred = false;
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if (!this->WriteFieldData(fp, input->GetFieldData()))
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{
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error_occurred = true;
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}
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if (!error_occurred && !this->WritePoints(fp, input->GetPoints()))
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{
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error_occurred = true;
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}
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if (!error_occurred)
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{
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const vtkIdType edge_count = input->GetNumberOfEdges();
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*fp << "EDGES " << edge_count << "\n";
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this->WriteEdges(*fp, input);
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}
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if (!error_occurred && !this->WriteEdgeData(fp, input))
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{
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error_occurred = true;
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}
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if (!error_occurred && !this->WriteVertexData(fp, input))
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{
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error_occurred = true;
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}
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if (error_occurred)
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{
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if (this->FileName)
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{
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vtkErrorMacro("Ran out of disk space; deleting file: " << this->FileName);
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this->CloseVTKFile(fp);
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unlink(this->FileName);
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}
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else
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{
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vtkErrorMacro("Error writing data set to memory");
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this->CloseVTKFile(fp);
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}
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return;
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}
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this->CloseVTKFile(fp);
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}
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int vtkTreeWriter::FillInputPortInformation(int, vtkInformation* info)
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{
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info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkTree");
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return 1;
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}
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vtkTree* vtkTreeWriter::GetInput()
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{
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return vtkTree::SafeDownCast(this->Superclass::GetInput());
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}
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vtkTree* vtkTreeWriter::GetInput(int port)
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{
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return vtkTree::SafeDownCast(this->Superclass::GetInput(port));
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}
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void vtkTreeWriter::PrintSelf(ostream& os, vtkIndent indent)
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{
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this->Superclass::PrintSelf(os, indent);
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}
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