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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkIVWriter.h"
#include "vtkCellArray.h"
#include "vtkInformation.h"
#include "vtkLookupTable.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkPolyData.h"
#include <vtksys/SystemTools.hxx>
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkIVWriter);
//------------------------------------------------------------------------------
void vtkIVWriter::WriteData()
{
FILE* fp;
// make sure the user specified a FileName
if (this->FileName == nullptr)
{
vtkErrorMacro(<< "Please specify FileName to use");
return;
}
// try opening the files
fp = vtksys::SystemTools::Fopen(this->FileName, "w");
if (!fp)
{
vtkErrorMacro(<< "unable to open OpenInventor file: " << this->FileName);
return;
}
//
// Write header
//
vtkDebugMacro("Writing OpenInventor file");
fprintf(fp, "#Inventor V2.0 ascii\n");
fprintf(fp, "# OpenInventor file written by the visualization toolkit\n\n");
this->WritePolyData(this->GetInput(), fp);
if (fclose(fp))
{
vtkErrorMacro(<< this->FileName << " did not close successfully. Check disk space.");
}
}
//------------------------------------------------------------------------------
void vtkIVWriter::WritePolyData(vtkPolyData* pd, FILE* fp)
{
vtkPoints* points;
vtkIdType i;
vtkCellArray* cells;
vtkIdType npts = 0;
const vtkIdType* indx = nullptr;
vtkUnsignedCharArray* colors = nullptr;
points = pd->GetPoints();
// create colors for vertices
vtkDataArray* scalars = pd->GetPointData()->GetScalars();
if (scalars)
{
vtkLookupTable* lut;
if ((lut = scalars->GetLookupTable()) == nullptr)
{
lut = vtkLookupTable::New();
lut->Build();
}
colors = lut->MapScalars(scalars, VTK_COLOR_MODE_DEFAULT, 0);
if (!scalars->GetLookupTable())
{
lut->Delete();
}
}
fprintf(fp, "Separator {\n");
// Point data (coordinates)
fprintf(fp, "\tCoordinate3 {\n");
fprintf(fp, "\t\tpoint [\n");
fprintf(fp, "\t\t\t");
for (i = 0; i < points->GetNumberOfPoints(); i++)
{
double xyz[3];
points->GetPoint(i, xyz);
fprintf(fp, "%g %g %g, ", xyz[0], xyz[1], xyz[2]);
if (!((i + 1) % 2))
{
fprintf(fp, "\n\t\t\t");
}
}
fprintf(fp, "\n\t\t]");
fprintf(fp, "\t}\n");
// Per vertex coloring
fprintf(fp, "\tMaterialBinding {\n");
fprintf(fp, "\t\tvalue PER_VERTEX_INDEXED\n");
fprintf(fp, "\t}\n");
// Colors, if any
if (colors)
{
fprintf(fp, "\tMaterial {\n");
fprintf(fp, "\t\tdiffuseColor [\n");
fprintf(fp, "\t\t\t");
for (i = 0; i < colors->GetNumberOfTuples(); i++)
{
unsigned char* rgba;
rgba = colors->GetPointer(4 * i);
fprintf(fp, "%g %g %g, ", rgba[0] / 255.0f, rgba[1] / 255.0f, rgba[2] / 255.0f);
if (!((i + 1) % 2))
{
fprintf(fp, "\n\t\t\t");
}
}
fprintf(fp, "\n\t\t]\n");
fprintf(fp, "\t}\n");
colors->Delete();
}
// write out polys if any
if (pd->GetNumberOfPolys() > 0)
{
fprintf(fp, "\tIndexedFaceSet {\n");
fprintf(fp, "\t\tcoordIndex [\n");
cells = pd->GetPolys();
for (cells->InitTraversal(); cells->GetNextCell(npts, indx);)
{
fprintf(fp, "\t\t\t");
for (i = 0; i < npts; i++)
{
// treating vtkIdType as int
fprintf(fp, "%i, ", (int)indx[i]);
}
fprintf(fp, "-1,\n");
}
fprintf(fp, "\t\t]\n");
fprintf(fp, "\t}\n");
}
// write out lines if any
if (pd->GetNumberOfLines() > 0)
{
fprintf(fp, "\tIndexedLineSet {\n");
fprintf(fp, "\t\tcoordIndex [\n");
cells = pd->GetLines();
for (cells->InitTraversal(); cells->GetNextCell(npts, indx);)
{
fprintf(fp, "\t\t\t");
for (i = 0; i < npts; i++)
{
// treating vtkIdType as int
fprintf(fp, "%i, ", (int)indx[i]);
}
fprintf(fp, "-1,\n");
}
fprintf(fp, "\t\t]\n");
fprintf(fp, "\t}\n");
}
// write out verts if any
if (pd->GetNumberOfVerts() > 0)
{
fprintf(fp, "\tIndexdedPointSet {\n");
fprintf(fp, "\t\tcoordIndex [");
cells = pd->GetVerts();
for (cells->InitTraversal(); cells->GetNextCell(npts, indx);)
{
fprintf(fp, "\t\t\t");
for (i = 0; i < npts; i++)
{
// treating vtkIdType as int
fprintf(fp, "%i, ", (int)indx[i]);
}
fprintf(fp, "-1,\n");
}
fprintf(fp, "\t\t]\n");
fprintf(fp, "\t}\n");
}
// write out tstrips if any
if (pd->GetNumberOfStrips() > 0)
{
fprintf(fp, "\tIndexedTriangleStripSet {\n");
fprintf(fp, "\t\tcoordIndex [\n");
cells = pd->GetStrips();
for (cells->InitTraversal(); cells->GetNextCell(npts, indx);)
{
fprintf(fp, "\t\t\t");
for (i = 0; i < npts; i++)
{
// treating vtkIdType as int
fprintf(fp, "%i, ", (int)indx[i]);
}
fprintf(fp, "-1,\n");
}
fprintf(fp, "\t\t]\n");
fprintf(fp, "\t}\n");
}
fprintf(fp, "}\n"); // close the Shape
}
//------------------------------------------------------------------------------
void vtkIVWriter::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
//------------------------------------------------------------------------------
vtkPolyData* vtkIVWriter::GetInput()
{
return vtkPolyData::SafeDownCast(this->Superclass::GetInput());
}
//------------------------------------------------------------------------------
vtkPolyData* vtkIVWriter::GetInput(int port)
{
return vtkPolyData::SafeDownCast(this->Superclass::GetInput(port));
}
//------------------------------------------------------------------------------
int vtkIVWriter::FillInputPortInformation(int, vtkInformation* info)
{
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkPolyData");
return 1;
}
VTK_ABI_NAMESPACE_END
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