<commit_before>/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkArcSource.cxx

  Copyright (c) <NAME>, <NAME>, <NAME>
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#include "vtkArcSource.h"

#include "vtkCellArray.h"
#include "vtkFloatArray.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkPointData.h"
#include "vtkPoints.h"
#include "vtkPolyData.h"
#include "vtkMath.h"

#include <math.h>
vtkCxxRevisionMacro(vtkArcSource, "1.4");
vtkStandardNewMacro(vtkArcSource);

// --------------------------------------------------------------------------
vtkArcSource::vtkArcSource(int res)
{
  this->Point1[0] =  0.0;
  this->Point1[1] =  0.5;
  this->Point1[2] =  0.0;

  this->Point2[0] =  0.5;
  this->Point2[1] =  0.0;
  this->Point2[2] =  0.0;

  this->Center[0] =  0.0;
  this->Center[1] =  0.0;
  this->Center[2] =  0.0;
  
  this->Resolution = (res < 1 ? 1 : res);
  this->Negative = false;

  this->SetNumberOfInputPorts(0);
}

// --------------------------------------------------------------------------
int vtkArcSource::RequestInformation(
  vtkInformation *vtkNotUsed(request),
  vtkInformationVector **vtkNotUsed(inputVector),
  vtkInformationVector *outputVector)
{
  // get the info object
  vtkInformation *outInfo = outputVector->GetInformationObject(0);
  outInfo->Set(vtkStreamingDemandDrivenPipeline::MAXIMUM_NUMBER_OF_PIECES(),
               -1);
  return 1;
}

// --------------------------------------------------------------------------
int vtkArcSource::RequestData(
  vtkInformation *vtkNotUsed(request),
  vtkInformationVector **vtkNotUsed(inputVector),
  vtkInformationVector *outputVector)
{
  int numLines = this->Resolution;
  int numPts = this->Resolution+1;
  double tc[3] = {0.0, 0.0, 0.0};
  
  // get the info object
  vtkInformation *outInfo = outputVector->GetInformationObject(0);

  if (outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_PIECE_NUMBER()) > 0)
    {
    return 1;
    }
  
  // get the ouptut
  vtkPolyData *output = vtkPolyData::SafeDownCast(
    outInfo->Get(vtkDataObject::DATA_OBJECT()));
  
  // Compute the cross product of the two vectors.
  double v1[3] = { this->Point1[0] - this->Center[0],
                   this->Point1[1] - this->Center[1],
                   this->Point1[2] - this->Center[2] };
  double v2[3] = { this->Point2[0] - this->Center[0],
                   this->Point2[1] - this->Center[1],
                   this->Point2[2] - this->Center[2] };

  double normal[3], perpendicular[3];
  vtkMath::Cross( v1, v2, normal );
  vtkMath::Cross( normal, v1, perpendicular );
  vtkMath::Normalize( perpendicular );
  double dotprod = 
    vtkMath::Dot( v1, v2 ) / (vtkMath::Norm(v1) * vtkMath::Norm(v2));
  double angle = acos( dotprod );
  if (this->Negative)
    {
    angle -= vtkMath::DoubleTwoPi();
    }
  double radius = vtkMath::Normalize( v1 );
  double angleInc = angle / this->Resolution;
  
  vtkPoints *newPoints = vtkPoints::New();
  newPoints->Allocate(numPts);
  vtkFloatArray *newTCoords = vtkFloatArray::New();
  newTCoords->SetNumberOfComponents(2);
  newTCoords->Allocate(2*numPts);
  newTCoords->SetName("Texture Coordinates");
  vtkCellArray *newLines = vtkCellArray::New();
  newLines->Allocate(newLines->EstimateSize(numLines,2));
  
  double theta = 0.0;
  for (int i = 0; i < this->Resolution; i++, theta += angleInc)
    {
    const double cosine = cos(theta);
    const double sine = sin(theta);
    double p[3] = 
      { this->Center[0] + cosine*radius*v1[0] + sine*radius*perpendicular[0],
        this->Center[1] + cosine*radius*v1[1] + sine*radius*perpendicular[1],
        this->Center[2] + cosine*radius*v1[2] + sine*radius*perpendicular[2] };
    
    tc[0] = static_cast<double>(i)/this->Resolution;
    newPoints->InsertPoint(i,p);
    newTCoords->InsertTuple(i,tc);
    }

  tc[0] = 1.0;
  newPoints->InsertPoint( this->Resolution, this->Point2 );
  newTCoords->InsertTuple(this->Resolution,tc);

  newLines->InsertNextCell(numPts);
  for (int k=0; k < numPts; k++) 
    {
    newLines->InsertCellPoint (k);
    }

  output->SetPoints(newPoints);
  newPoints->Delete();

  output->GetPointData()->SetTCoords(newTCoords);
  newTCoords->Delete();

  output->SetLines(newLines);
  newLines->Delete();

  return 1;
}

// --------------------------------------------------------------------------
void vtkArcSource::PrintSelf(ostream& os, vtkIndent indent)
{
  this->Superclass::PrintSelf(os,indent);

  os << indent << "Resolution: " << this->Resolution << "\n";

  os << indent << "Point 1: (" << this->Point1[0] << ", "
                               << this->Point1[1] << ", "
                               << this->Point1[2] << ")\n";

  os << indent << "Point 2: (" << this->Point2[0] << ", "
                               << this->Point2[1] << ", "
                               << this->Point2[2] << ")\n";

  os << indent << "Center: (" << this->Center[0] << ", "
                              << this->Center[1] << ", "
                              << this->Center[2] << ")\n";
}
<commit_msg>COMP: vtkArcSource: print the new Negative property in PrintSelf<commit_after>/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkArcSource.cxx

  Copyright (c) <NAME>, <NAME>, <NAME>
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#include "vtkArcSource.h"

#include "vtkCellArray.h"
#include "vtkFloatArray.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkPointData.h"
#include "vtkPoints.h"
#include "vtkPolyData.h"
#include "vtkMath.h"

#include <math.h>
vtkCxxRevisionMacro(vtkArcSource, "1.5");
vtkStandardNewMacro(vtkArcSource);

// --------------------------------------------------------------------------
vtkArcSource::vtkArcSource(int res)
{
  this->Point1[0] =  0.0;
  this->Point1[1] =  0.5;
  this->Point1[2] =  0.0;

  this->Point2[0] =  0.5;
  this->Point2[1] =  0.0;
  this->Point2[2] =  0.0;

  this->Center[0] =  0.0;
  this->Center[1] =  0.0;
  this->Center[2] =  0.0;
  
  this->Resolution = (res < 1 ? 1 : res);
  this->Negative = false;

  this->SetNumberOfInputPorts(0);
}

// --------------------------------------------------------------------------
int vtkArcSource::RequestInformation(
  vtkInformation *vtkNotUsed(request),
  vtkInformationVector **vtkNotUsed(inputVector),
  vtkInformationVector *outputVector)
{
  // get the info object
  vtkInformation *outInfo = outputVector->GetInformationObject(0);
  outInfo->Set(vtkStreamingDemandDrivenPipeline::MAXIMUM_NUMBER_OF_PIECES(),
               -1);
  return 1;
}

// --------------------------------------------------------------------------
int vtkArcSource::RequestData(
  vtkInformation *vtkNotUsed(request),
  vtkInformationVector **vtkNotUsed(inputVector),
  vtkInformationVector *outputVector)
{
  int numLines = this->Resolution;
  int numPts = this->Resolution+1;
  double tc[3] = {0.0, 0.0, 0.0};
  
  // get the info object
  vtkInformation *outInfo = outputVector->GetInformationObject(0);

  if (outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_PIECE_NUMBER()) > 0)
    {
    return 1;
    }
  
  // get the ouptut
  vtkPolyData *output = vtkPolyData::SafeDownCast(
    outInfo->Get(vtkDataObject::DATA_OBJECT()));
  
  // Compute the cross product of the two vectors.
  double v1[3] = { this->Point1[0] - this->Center[0],
                   this->Point1[1] - this->Center[1],
                   this->Point1[2] - this->Center[2] };
  double v2[3] = { this->Point2[0] - this->Center[0],
                   this->Point2[1] - this->Center[1],
                   this->Point2[2] - this->Center[2] };

  double normal[3], perpendicular[3];
  vtkMath::Cross( v1, v2, normal );
  vtkMath::Cross( normal, v1, perpendicular );
  vtkMath::Normalize( perpendicular );
  double dotprod = 
    vtkMath::Dot( v1, v2 ) / (vtkMath::Norm(v1) * vtkMath::Norm(v2));
  double angle = acos( dotprod );
  if (this->Negative)
    {
    angle -= vtkMath::DoubleTwoPi();
    }
  double radius = vtkMath::Normalize( v1 );
  double angleInc = angle / this->Resolution;
  
  vtkPoints *newPoints = vtkPoints::New();
  newPoints->Allocate(numPts);
  vtkFloatArray *newTCoords = vtkFloatArray::New();
  newTCoords->SetNumberOfComponents(2);
  newTCoords->Allocate(2*numPts);
  newTCoords->SetName("Texture Coordinates");
  vtkCellArray *newLines = vtkCellArray::New();
  newLines->Allocate(newLines->EstimateSize(numLines,2));
  
  double theta = 0.0;
  for (int i = 0; i < this->Resolution; i++, theta += angleInc)
    {
    const double cosine = cos(theta);
    const double sine = sin(theta);
    double p[3] = 
      { this->Center[0] + cosine*radius*v1[0] + sine*radius*perpendicular[0],
        this->Center[1] + cosine*radius*v1[1] + sine*radius*perpendicular[1],
        this->Center[2] + cosine*radius*v1[2] + sine*radius*perpendicular[2] };
    
    tc[0] = static_cast<double>(i)/this->Resolution;
    newPoints->InsertPoint(i,p);
    newTCoords->InsertTuple(i,tc);
    }

  tc[0] = 1.0;
  newPoints->InsertPoint( this->Resolution, this->Point2 );
  newTCoords->InsertTuple(this->Resolution,tc);

  newLines->InsertNextCell(numPts);
  for (int k=0; k < numPts; k++) 
    {
    newLines->InsertCellPoint (k);
    }

  output->SetPoints(newPoints);
  newPoints->Delete();

  output->GetPointData()->SetTCoords(newTCoords);
  newTCoords->Delete();

  output->SetLines(newLines);
  newLines->Delete();

  return 1;
}

// --------------------------------------------------------------------------
void vtkArcSource::PrintSelf(ostream& os, vtkIndent indent)
{
  this->Superclass::PrintSelf(os,indent);

  os << indent << "Resolution: " << this->Resolution << "\n";

  os << indent << "Point 1: (" << this->Point1[0] << ", "
                               << this->Point1[1] << ", "
                               << this->Point1[2] << ")\n";

  os << indent << "Point 2: (" << this->Point2[0] << ", "
                               << this->Point2[1] << ", "
                               << this->Point2[2] << ")\n";

  os << indent << "Center: (" << this->Center[0] << ", "
                              << this->Center[1] << ", "
                              << this->Center[2] << ")\n";
  
  os << indent << "Negative: " << this->Negative << "\n";
}

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