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

  Program:   Visualization Toolkit
  Module:    vtkViewDependentErrorMetric.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 "vtkViewDependentErrorMetric.h"

#include "vtkObjectFactory.h"
#include "vtkGenericAttribute.h"
#include "vtkGenericAttributeCollection.h"
#include "vtkGenericAdaptorCell.h"
#include "vtkGenericDataSet.h"
#include "vtkMath.h"
#include <assert.h>
#include "vtkCoordinate.h"

vtkCxxRevisionMacro(vtkViewDependentErrorMetric,"1.3");
vtkStandardNewMacro(vtkViewDependentErrorMetric);

//-----------------------------------------------------------------------------
vtkViewDependentErrorMetric::vtkViewDependentErrorMetric()
{
  this->PixelTolerance = 0.25; // arbitrary positive value
  this->Viewport = 0;
  this->Coordinate = vtkCoordinate::New();
  this->Coordinate->SetCoordinateSystemToWorld();
}

//-----------------------------------------------------------------------------
vtkViewDependentErrorMetric::~vtkViewDependentErrorMetric()
{
  this->Coordinate->Delete();
}

//-----------------------------------------------------------------------------
// Avoid reference loop
void vtkViewDependentErrorMetric::SetViewport(vtkViewport *viewport)
{
  this->Viewport = viewport;
  this->Modified();
}

//-----------------------------------------------------------------------------
int vtkViewDependentErrorMetric::NeedEdgeSubdivision(double *leftPoint,
                                                     double *midPoint,
                                                     double *rightPoint,
                                                     double vtkNotUsed(alpha))
{
  assert("pre: leftPoint_exists" && leftPoint!=0);
  assert("pre: midPoint_exists" && midPoint!=0);
  assert("pre: rightPoint_exists" && rightPoint!=0);
//  assert("pre: clamped_alpha" && alpha>0 && alpha<1); // or else true
  if( this->GenericCell->IsGeometryLinear() )
    {
    //don't need to do anything:
    return 0;
    }
#if 0
  if( !this->RayFrustumIntersection(leftPoint,rightPoint,frustum) && !this->PointFrustumIntersection(midPoint,frustum))
    {
    // not in the frustum, don't need subdivision
    return 0;
    }
#endif
  
  // Get the projection of the left, mid and right points
  double leftProjPoint[2];
  double midProjPoint[2];
//  double rightProjPoint[2];
  
  this->Coordinate->SetValue(leftPoint);
  double *pix = this->Coordinate->GetComputedDoubleDisplayValue(this->Viewport);
  
  // pix is a volatile pointer
  leftProjPoint[0] = pix[0];
  leftProjPoint[1] = pix[1];
  
  this->Coordinate->SetValue(midPoint);
  pix = this->Coordinate->GetComputedDoubleDisplayValue(this->Viewport);
  
  // pix is a volatile pointer
  midProjPoint[0] = pix[0];
  midProjPoint[1] = pix[1];
  
  this->Coordinate->SetValue(rightPoint);
  pix = this->Coordinate->GetComputedDoubleDisplayValue(this->Viewport);
  
  // distance between the line (leftProjPoint,rightProjPoint) and the point midProjPoint.
  return this->Distance2LinePoint(leftProjPoint,pix,midProjPoint)>this->PixelTolerance;
}

//-----------------------------------------------------------------------------
// Description:
// Square distance between a straight line (defined by points x and y)
// and a point z. Property: if x and y are equal, the line is a point and
// the result is the square distance between points x and z.
double vtkViewDependentErrorMetric::Distance2LinePoint(double x[2],
                                                       double y[2],
                                                       double z[2])
{
  double u[2];
  double v[2];
  double w[2];
  
  u[0] = y[0] - x[0];
  u[1] = y[1] - x[1];
  
  vtkMath::Normalize2D(u);
  
  v[0] = z[0] - x[0];
  v[1] = z[1] - x[1];
  
  double dot = vtkMath::Dot2D(u,v);
  
  w[0] = v[0] - dot*u[0];
  w[1] = v[1] - dot*u[1];
  
  return vtkMath::Dot2D(w,w);
}

//-----------------------------------------------------------------------------
void vtkViewDependentErrorMetric::PrintSelf(ostream& os, vtkIndent indent)
{
  this->Superclass::PrintSelf(os,indent);
  
  os << indent << "PixelTolerance: "  << this->PixelTolerance << endl;
  os << indent << "ViewPort: ";
  if( this->ViewPort )
    {
    this->ViewPort->PrintSelf( os << endl, indent.GetNextIndent());
    }
  else
    {
    os << "(none)" << endl;
    }
}<commit_msg>BUG: Need to include header<commit_after>/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkViewDependentErrorMetric.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 "vtkViewDependentErrorMetric.h"

#include "vtkObjectFactory.h"
#include "vtkGenericAttribute.h"
#include "vtkGenericAttributeCollection.h"
#include "vtkGenericAdaptorCell.h"
#include "vtkGenericDataSet.h"
#include "vtkMath.h"
#include <assert.h>
#include "vtkCoordinate.h"
#include "vtkViewport.h"

vtkCxxRevisionMacro(vtkViewDependentErrorMetric,"1.4");
vtkStandardNewMacro(vtkViewDependentErrorMetric);

//-----------------------------------------------------------------------------
vtkViewDependentErrorMetric::vtkViewDependentErrorMetric()
{
  this->PixelTolerance = 0.25; // arbitrary positive value
  this->Viewport = 0;
  this->Coordinate = vtkCoordinate::New();
  this->Coordinate->SetCoordinateSystemToWorld();
}

//-----------------------------------------------------------------------------
vtkViewDependentErrorMetric::~vtkViewDependentErrorMetric()
{
  this->Coordinate->Delete();
}

//-----------------------------------------------------------------------------
// Avoid reference loop
void vtkViewDependentErrorMetric::SetViewport(vtkViewport *viewport)
{
  this->Viewport = viewport;
  this->Modified();
}

//-----------------------------------------------------------------------------
int vtkViewDependentErrorMetric::NeedEdgeSubdivision(double *leftPoint,
                                                     double *midPoint,
                                                     double *rightPoint,
                                                     double vtkNotUsed(alpha))
{
  assert("pre: leftPoint_exists" && leftPoint!=0);
  assert("pre: midPoint_exists" && midPoint!=0);
  assert("pre: rightPoint_exists" && rightPoint!=0);
//  assert("pre: clamped_alpha" && alpha>0 && alpha<1); // or else true
  if( this->GenericCell->IsGeometryLinear() )
    {
    //don't need to do anything:
    return 0;
    }
#if 0
  if( !this->RayFrustumIntersection(leftPoint,rightPoint,frustum) && !this->PointFrustumIntersection(midPoint,frustum))
    {
    // not in the frustum, don't need subdivision
    return 0;
    }
#endif
  
  // Get the projection of the left, mid and right points
  double leftProjPoint[2];
  double midProjPoint[2];
//  double rightProjPoint[2];
  
  this->Coordinate->SetValue(leftPoint);
  double *pix = this->Coordinate->GetComputedDoubleDisplayValue(this->Viewport);
  
  // pix is a volatile pointer
  leftProjPoint[0] = pix[0];
  leftProjPoint[1] = pix[1];
  
  this->Coordinate->SetValue(midPoint);
  pix = this->Coordinate->GetComputedDoubleDisplayValue(this->Viewport);
  
  // pix is a volatile pointer
  midProjPoint[0] = pix[0];
  midProjPoint[1] = pix[1];
  
  this->Coordinate->SetValue(rightPoint);
  pix = this->Coordinate->GetComputedDoubleDisplayValue(this->Viewport);
  
  // distance between the line (leftProjPoint,rightProjPoint) and the point midProjPoint.
  return this->Distance2LinePoint(leftProjPoint,pix,midProjPoint)>this->PixelTolerance;
}

//-----------------------------------------------------------------------------
// Description:
// Square distance between a straight line (defined by points x and y)
// and a point z. Property: if x and y are equal, the line is a point and
// the result is the square distance between points x and z.
double vtkViewDependentErrorMetric::Distance2LinePoint(double x[2],
                                                       double y[2],
                                                       double z[2])
{
  double u[2];
  double v[2];
  double w[2];
  
  u[0] = y[0] - x[0];
  u[1] = y[1] - x[1];
  
  vtkMath::Normalize2D(u);
  
  v[0] = z[0] - x[0];
  v[1] = z[1] - x[1];
  
  double dot = vtkMath::Dot2D(u,v);
  
  w[0] = v[0] - dot*u[0];
  w[1] = v[1] - dot*u[1];
  
  return vtkMath::Dot2D(w,w);
}

//-----------------------------------------------------------------------------
void vtkViewDependentErrorMetric::PrintSelf(ostream& os, vtkIndent indent)
{
  this->Superclass::PrintSelf(os,indent);
  
  os << indent << "PixelTolerance: "  << this->PixelTolerance << endl;
  os << indent << "ViewPort: ";
  if( this->Viewport )
    {
    this->Viewport->PrintSelf( os << endl, indent.GetNextIndent());
    }
  else
    {
    os << "(none)" << endl;
    }
}
{'fraction_non_alphanumeric': 0.24166753735241878, 'fraction_numerical': 0.01128408734719465, 'mean_word_length': 2.27359781121751, 'pattern_counts': {'":': 0, '<': 49, '<?xml version=': 0, '>': 85, 'https://': 0, 'lorem ipsum': 0, 'www.': 2, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 20, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '1998459', 'n_tokens_mistral': 2801, 'n_tokens_neox': 2737, 'n_words': 598}