opencv/modules/viz/src/vtk/vtkOBJWriter.cpp

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/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2013, OpenCV Foundation, all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of the copyright holders may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
// Authors:
// * Anatoly Baksheev, Itseez Inc. myname.mysurname <> mycompany.com
//
//M*/
#include "../precomp.hpp"
namespace cv { namespace viz
{
vtkStandardNewMacro(vtkOBJWriter);
}}
cv::viz::vtkOBJWriter::vtkOBJWriter()
{
std::ofstream fout; // only used to extract the default precision
this->DecimalPrecision = fout.precision();
this->FileName = NULL;
}
cv::viz::vtkOBJWriter::~vtkOBJWriter(){}
void cv::viz::vtkOBJWriter::WriteData()
{
vtkPolyData *input = this->GetInput();
if (!input)
return;
if (!this->FileName )
{
vtkErrorMacro(<< "No FileName specified! Can't write!");
this->SetErrorCode(vtkErrorCode::NoFileNameError);
return;
}
vtkDebugMacro(<<"Opening vtk file for writing...");
ostream *outfilep = new ofstream(this->FileName, ios::out);
if (outfilep->fail())
{
vtkErrorMacro(<< "Unable to open file: "<< this->FileName);
this->SetErrorCode(vtkErrorCode::CannotOpenFileError);
delete outfilep;
return;
}
std::ostream& outfile = *outfilep;
//write header
2014-02-17 01:27:25 +08:00
outfile << "# wavefront obj file written by opencv viz module" << std::endl << std::endl;
outfile << "mtllib NONE" << std::endl << std::endl;
// write out the points
for (int i = 0; i < input->GetNumberOfPoints(); i++)
{
Vec3d p;
input->GetPoint(i, p.val);
outfile << std::setprecision(this->DecimalPrecision) << "v " << p[0] << " " << p[1] << " " << p[2] << std::endl;
}
const int idStart = 1;
// write out the point data
vtkSmartPointer<vtkDataArray> normals = input->GetPointData()->GetNormals();
if(normals)
{
for (int i = 0; i < normals->GetNumberOfTuples(); i++)
{
Vec3d p;
normals->GetTuple(i, p.val);
outfile << std::setprecision(this->DecimalPrecision) << "vn " << p[0] << " " << p[1] << " " << p[2] << std::endl;
}
}
vtkSmartPointer<vtkDataArray> tcoords = input->GetPointData()->GetTCoords();
if (tcoords)
{
for (int i = 0; i < tcoords->GetNumberOfTuples(); i++)
{
Vec2d p;
tcoords->GetTuple(i, p.val);
outfile << std::setprecision(this->DecimalPrecision) << "vt " << p[0] << " " << p[1] << std::endl;
}
}
// write out a group name and material
outfile << std::endl << "g grp" << idStart << std::endl;
outfile << "usemtl mtlNONE" << std::endl;
// write out verts if any
if (input->GetNumberOfVerts() > 0)
{
vtkIdType npts = 0, *index = 0;
vtkCellArray *cells = input->GetVerts();
for (cells->InitTraversal(); cells->GetNextCell(npts, index); )
{
outfile << "p ";
for (int i = 0; i < npts; i++)
outfile << index[i] + idStart << " ";
outfile << std::endl;
}
}
// write out lines if any
if (input->GetNumberOfLines() > 0)
{
vtkIdType npts = 0, *index = 0;
vtkCellArray *cells = input->GetLines();
for (cells->InitTraversal(); cells->GetNextCell(npts, index); )
{
outfile << "l ";
if (tcoords)
{
for (int i = 0; i < npts; i++)
outfile << index[i] + idStart << "/" << index[i] + idStart << " ";
}
else
for (int i = 0; i < npts; i++)
outfile << index[i] + idStart << " ";
outfile << std::endl;
}
}
// write out polys if any
if (input->GetNumberOfPolys() > 0)
{
vtkIdType npts = 0, *index = 0;
vtkCellArray *cells = input->GetPolys();
for (cells->InitTraversal(); cells->GetNextCell(npts, index); )
{
outfile << "f ";
for (int i = 0; i < npts; i++)
{
if (normals)
{
if (tcoords)
outfile << index[i] + idStart << "/" << index[i] + idStart << "/" << index[i] + idStart << " ";
else
outfile << index[i] + idStart << "//" << index[i] + idStart << " ";
}
else
{
if (tcoords)
outfile << index[i] + idStart << " " << index[i] + idStart << " ";
else
outfile << index[i] + idStart << " ";
}
}
outfile << std::endl;
}
}
// write out tstrips if any
if (input->GetNumberOfStrips() > 0)
{
vtkIdType npts = 0, *index = 0;
vtkCellArray *cells = input->GetStrips();
for (cells->InitTraversal(); cells->GetNextCell(npts, index); )
{
for (int i = 2, i1, i2; i < npts; ++i)
{
if (i % 2)
{
i1 = i - 1;
i2 = i - 2;
}
else
{
i1 = i - 1;
i2 = i - 2;
}
if(normals)
{
if (tcoords)
{
outfile << "f " << index[i1] + idStart << "/" << index[i1] + idStart << "/" << index[i1] + idStart << " "
<< index[i2]+ idStart << "/" << index[i2] + idStart << "/" << index[i2] + idStart << " "
<< index[i] + idStart << "/" << index[i] + idStart << "/" << index[i] + idStart << std::endl;
}
else
{
outfile << "f " << index[i1] + idStart << "//" << index[i1] + idStart << " " << index[i2] + idStart
<< "//" << index[i2] + idStart << " " << index[i] + idStart << "//" << index[i] + idStart << std::endl;
}
}
else
{
if (tcoords)
{
outfile << "f " << index[i1] + idStart << "/" << index[i1] + idStart << " " << index[i2] + idStart
<< "/" << index[i2] + idStart << " " << index[i] + idStart << "/" << index[i] + idStart << std::endl;
}
else
outfile << "f " << index[i1] + idStart << " " << index[i2] + idStart << " " << index[i] + idStart << std::endl;
}
} /* for (int i = 2; i < npts; ++i) */
}
} /* if (input->GetNumberOfStrips() > 0) */
vtkDebugMacro(<<"Closing vtk file\n");
delete outfilep;
// Delete the file if an error occurred
if (this->ErrorCode == vtkErrorCode::OutOfDiskSpaceError)
{
vtkErrorMacro("Ran out of disk space; deleting file: " << this->FileName);
unlink(this->FileName);
}
}
void cv::viz::vtkOBJWriter::PrintSelf(ostream& os, vtkIndent indent)
{
Superclass::PrintSelf(os, indent);
os << indent << "DecimalPrecision: " << DecimalPrecision << "\n";
}
int cv::viz::vtkOBJWriter::FillInputPortInformation(int, vtkInformation *info)
{
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkPolyData");
return 1;
}
vtkPolyData* cv::viz::vtkOBJWriter::GetInput()
{
return vtkPolyData::SafeDownCast(this->Superclass::GetInput());
}
vtkPolyData* cv::viz::vtkOBJWriter::GetInput(int port)
{
return vtkPolyData::SafeDownCast(this->Superclass::GetInput(port));
}