// Created by: CKY / Contract Toubro-Larsen
// Copyright (c) 1993-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

//--------------------------------------------------------------------
//--------------------------------------------------------------------

#include <gp_GTrsf.hxx>
#include <gp_Pnt.hxx>
#include <gp_Vec.hxx>
#include <IGESGeom_CopiousData.hxx>
#include <Standard_DimensionMismatch.hxx>
#include <Standard_NullObject.hxx>
#include <Standard_Type.hxx>

IMPLEMENT_STANDARD_RTTIEXT(IGESGeom_CopiousData, IGESData_IGESEntity)

IGESGeom_CopiousData::IGESGeom_CopiousData()
{
  theDataType = 0; // to allow Setting Form Number before Init
}

void IGESGeom_CopiousData::Init(const int                                       aDataType,
                                const double                                    aZPlane,
                                const occ::handle<NCollection_HArray1<double>>& allData)
{
  // PTV OCC386 crash application while reading So5771b.igs
  if (allData.IsNull())
    throw Standard_NullObject("IGESGeom_CopiousData : Init with null data");

  if (allData->Lower() != 1)
    throw Standard_DimensionMismatch("IGESGeom_CopiousData : Init");
  theDataType = aDataType;
  theZPlane   = aZPlane;
  theData     = allData;
  // FormNumber = DataType + <N>  N=0 -> Set of Points. N=10 : PolyLine
  //    or N=62 (DataType=1 only, gives FormNumber=63) : 2D closed path
  InitTypeAndForm(106, FormNumber());
}

void IGESGeom_CopiousData::SetPolyline(const bool F)
{
  int newfn = theDataType;
  if (F)
    newfn += 10;
  InitTypeAndForm(106, newfn);
}

void IGESGeom_CopiousData::SetClosedPath2D()
{
  InitTypeAndForm(106, 63); // and verify DataType !
}

bool IGESGeom_CopiousData::IsPointSet() const
{
  return (FormNumber() < 10);
}

bool IGESGeom_CopiousData::IsPolyline() const
{
  return (FormNumber() / 10 == 1);
}

bool IGESGeom_CopiousData::IsClosedPath2D() const
{
  return (FormNumber() == 63);
}

int IGESGeom_CopiousData::DataType() const
{
  return theDataType;
}

int IGESGeom_CopiousData::NbPoints() const
{
  int nbtuples;
  // PTV OCC386
  if (theData.IsNull())
    nbtuples = 0;
  else
    nbtuples = theData->Length();
  if (theDataType == 1)
    nbtuples /= 2;
  else if (theDataType == 2)
    nbtuples /= 3;
  else if (theDataType == 3)
    nbtuples /= 6;
  return nbtuples;
}

double IGESGeom_CopiousData::Data(const int nump, const int numdata) const
{
  int numd = 0;
  if (theDataType == 1)
    numd = 2 * (nump - 1) + numdata; // 1-2
  else if (theDataType == 2)
    numd = 3 * (nump - 1) + numdata; // 1-2-3
  else if (theDataType == 3)
    numd = 6 * (nump - 1) + numdata; // 1-2-3-4-5-6
  return theData->Value(numd);
}

double IGESGeom_CopiousData::ZPlane() const
{
  return theZPlane;
}

gp_Pnt IGESGeom_CopiousData::Point(const int anIndex) const
{
  int    lower = theData->Lower();
  int    real_index;
  double X = 0., Y = 0., Z = 0.;
  if (theDataType == 1)
  {
    real_index = lower + 2 * (anIndex - 1);
    X          = theData->Value(real_index);
    Y          = theData->Value(real_index + 1);
    Z          = theZPlane;
  }

  if (theDataType == 2)
  {
    real_index = lower + 3 * (anIndex - 1);
    X          = theData->Value(real_index);
    Y          = theData->Value(real_index + 1);
    Z          = theData->Value(real_index + 2);
  }

  if (theDataType == 3)
  {
    real_index = lower + 6 * (anIndex - 1);
    X          = theData->Value(real_index);
    Y          = theData->Value(real_index + 1);
    Z          = theData->Value(real_index + 2);
  }

  gp_Pnt point(X, Y, Z);
  return point;
}

gp_Pnt IGESGeom_CopiousData::TransformedPoint(const int anIndex) const
{
  if (!HasTransf())
    return Point(anIndex);
  gp_XYZ xyz(Point(anIndex).XYZ());
  Location().Transforms(xyz);
  return gp_Pnt(xyz);
}

gp_Vec IGESGeom_CopiousData::Vector(const int anIndex) const
{
  int lower = theData->Lower();
  int Real_Index;
  if (theDataType != 3)
    return gp_Vec(0.0, 0.0, 0.0);
  Real_Index = lower + 6 * (anIndex - 1) + 3;
  double I   = theData->Value(Real_Index);
  double J   = theData->Value(Real_Index + 1);
  double K   = theData->Value(Real_Index + 2);
  return gp_Vec(I, J, K);
}

gp_Vec IGESGeom_CopiousData::TransformedVector(const int anIndex) const
{
  if (!HasTransf())
    return Vector(anIndex);
  gp_XYZ   xyz(Vector(anIndex).XYZ());
  gp_GTrsf loc = Location();
  loc.SetTranslationPart(gp_XYZ(0., 0., 0.));
  loc.Transforms(xyz);
  return gp_Vec(xyz);
}
