C++ ON_BinaryArchive::ReadDouble方法代码示例

BOOL ON_BrepEdge::Read( ON_BinaryArchive& file )
{
  int bReversed = false;
  ON_Interval proxy_domain;
  BOOL rc = file.ReadInt( &m_edge_index );
  if (rc) rc = file.ReadInt( &m_c3i );
  if (rc) rc = file.ReadInt( &bReversed );
  if (rc) rc = file.ReadInterval( proxy_domain );
  if (rc) rc = file.ReadInt( 2, m_vi );
  if (rc) rc = file.ReadArray( m_ti );
  if (rc) rc = file.ReadDouble( &m_tolerance );
  ON_Interval domain = proxy_domain;
  if (    file.Archive3dmVersion() >= 3
       && file.ArchiveOpenNURBSVersion() >= 200206180 )
  {
    if (rc)
    {
      rc = file.ReadInterval(domain);
      if ( !rc)
        domain = proxy_domain;
    }
  }
  SetProxyCurve( NULL, proxy_domain );
  if ( bReversed )
    ON_CurveProxy::Reverse();
  SetDomain(domain);

  return rc;
}

ON_BOOL32 ON_AngularDimension::Read( ON_BinaryArchive& file )
{
  ON_BOOL32 rc = ON_Annotation::Read( file );
  if( rc )
    rc = file.ReadDouble( &m_angle );
  if( rc )
    rc = file.ReadDouble( &m_radius );

  if( m_angle <= 0.0 || m_angle > REALLY_BIG_NUMBER)
    return false;

  if( m_radius <= 0.0 || m_radius > REALLY_BIG_NUMBER)
    return false;

  return rc;
}

ON_BOOL32 ON_DetailView::Read(ON_BinaryArchive& archive)
{
  m_page_per_model_ratio = 0.0;
  m_view.Default();
  m_boundary.Destroy();

  int major_version = 0;
  int minor_version = 0;
  bool rc = archive.BeginRead3dmChunk( TCODE_ANONYMOUS_CHUNK, &major_version, &minor_version );
  if (!rc)
    return false;

  for(;;)
  {
    rc = (1 == major_version );
    if (!rc) break;

    // m_view is wrapped in a subchunk so ON_3dmView can be expanded 
    // without breaking the file format.
    int mj = 0, mn = 0;
    rc = archive.BeginRead3dmChunk( TCODE_ANONYMOUS_CHUNK, &mj, &mn );
    if (rc) 
    {
      rc = m_view.Read(archive);
      if (!archive.EndRead3dmChunk())
        rc = false;
    }
    if (!rc) break;


    // m_boundary is wrapped in a subchunk so ON_NurbsCurve can be expanded 
    // without breaking the file format.
    mj = mn = 0;
    rc = archive.BeginRead3dmChunk( TCODE_ANONYMOUS_CHUNK, &mj, &mn );
    if (rc) 
    {
      rc = m_boundary.Read(archive)?true:false;
      if (!archive.EndRead3dmChunk())
        rc = false;
    }
    if (!rc) break;

    if ( minor_version >= 1 )
    {
      rc = archive.ReadDouble(&m_page_per_model_ratio);
    }


    break;
  }

  if ( !archive.EndRead3dmChunk() )
    rc = false;

  return rc;
}

BOOL
ON_BrepVertex::Read( ON_BinaryArchive& file )
{
  BOOL rc = file.ReadInt( &m_vertex_index );
  if ( rc )
    rc = file.ReadPoint( point );
  if ( rc )
    rc = file.ReadArray( m_ei );
  if ( rc )
    rc = file.ReadDouble( &m_tolerance );
  return rc;
}

BOOL ON_Hatch::Read( ON_BinaryArchive& ar)
{
  m_plane.CreateFromNormal( ON_origin, ON_zaxis);
  m_pattern_scale = 1.0;
  m_pattern_rotation = 0.0;
  m_pattern_index = -1;
  m_loops.Empty();
  int major_version = 0;
  int minor_version = 0;
  BOOL rc = ar.Read3dmChunkVersion( &major_version, &minor_version);
  if ( major_version == 1 )
  {
    if( rc) rc = ar.ReadPlane( m_plane);
    if( rc) rc = ar.ReadDouble( &m_pattern_scale);
    if( rc) rc = ar.ReadDouble( &m_pattern_rotation);
    if( rc) rc = ar.ReadInt( &m_pattern_index);
    if( rc)
    {
      m_loops.Empty();
      int i, count = 0;
      rc = ar.ReadInt( &count);
      if( rc && count > 0)
      {
        m_loops.SetCapacity( count );
        for( i = 0; rc && i < count; i++)
        {
          ON_HatchLoop*& pLoop = m_loops.AppendNew();
          pLoop = new ON_HatchLoop;
          if( pLoop)
            rc = pLoop->Read( ar);
          else
            rc = false;
        }
      }
    }
  }
  return rc;
}

ON_BOOL32 ON_Light::Read(
       ON_BinaryArchive&  file
     )
{
  Default();
  int major_version = 0;
  int minor_version = 0;
  ON_BOOL32 rc = file.Read3dmChunkVersion(&major_version,&minor_version);
  if ( rc && major_version == 1 ) {
    int i;
    // version 1.0 fields
    i = 0;
    if ( rc ) rc = file.ReadInt( &i );
    if ( rc ) Enable(i);
    if ( rc ) rc = file.ReadInt( &i );
    if ( rc ) SetStyle(ON::LightStyle(i));
    if ( rc ) rc = file.ReadDouble( &m_intensity );
    if ( rc ) rc = file.ReadDouble( &m_watts );
    if ( rc ) rc = file.ReadColor( m_ambient );
    if ( rc ) rc = file.ReadColor( m_diffuse );
    if ( rc ) rc = file.ReadColor( m_specular );
    if ( rc ) rc = file.ReadVector( m_direction );
    if ( rc ) rc = file.ReadPoint( m_location );
    if ( rc ) rc = file.ReadDouble( &m_spot_angle );
    if ( rc ) rc = file.ReadDouble( &m_spot_exponent );
    if ( rc ) rc = file.ReadVector( m_attenuation );
    if ( rc ) rc = file.ReadDouble( &m_shadow_intensity );
    if ( rc ) rc = file.ReadInt( &m_light_index );
    if ( rc ) rc = file.ReadUuid( m_light_id );
    if ( rc ) rc = file.ReadString( m_light_name );

    if ( minor_version < 2 ) {
      // set hotspot from 1.0 or 1.1 m_spot_exponent
      double h = 1.0 - m_spot_exponent/128.0;
      if ( h < 0.0 ) 
        h = 0.0;
      else if ( h > 1.0 )
        h = 1.0;
      m_hotspot = h;
      m_spot_exponent = 0.0;
    }

    if ( minor_version >= 1 ) {
      // version 1.1 fields
      if ( rc ) rc = file.ReadVector( m_length );
      if ( rc ) rc = file.ReadVector( m_width );
      if ( minor_version >= 2 ) {
        // version 1.2 fields
        if ( rc ) rc = file.ReadDouble( &m_hotspot );
      }
    }
  }
  return rc;
}

ON_BOOL32 ON_3dmObjectAttributes::Read( ON_BinaryArchive& file )
{
  Default();
  if (    file.Archive3dmVersion() >= 5 
       && file.ArchiveOpenNURBSVersion() >= 200712190 )
  {
    return ReadV5Helper(file);
  }
  int i;
  int major_version = 0;
  int minor_version = 0;
  bool rc = file.Read3dmChunkVersion(&major_version,&minor_version);
  if ( rc && major_version == 1 ) 
  {
    if (rc) rc = file.ReadUuid(m_uuid);
    if (rc) rc = file.ReadInt(&m_layer_index);
    if (rc) rc = file.ReadInt(&m_material_index);
    if (rc) rc = file.ReadColor(m_color);
    
    while(rc)
    {
      // OBSOLETE if (rc) rc = file.ReadLineStyle(m_line_style); // 23 March 2005 Dale Lear
      // replaced with
      short s = 0;
      double x;
      rc = file.ReadShort(&s); 
      if (!rc) break;
      if ( file.Archive3dmVersion() < 4 || file.ArchiveOpenNURBSVersion() < 200503170 )
      {
        // ignore unused linestyle info in old files
        // This bit keeps the curve arrowheads from V3 showing up
        // in V4.
        m_object_decoration = ON::ObjectDecoration( (s & ON::both_arrowhead) );
      }
      rc = file.ReadShort(&s);
      if (!rc) break;
      rc = file.ReadDouble(&x);
      if (!rc) break;
      rc = file.ReadDouble(&x);
      break;
    }

    if (rc) rc = file.ReadInt(&m_wire_density);
    if (rc) rc = file.ReadChar(&m_mode);

    if (rc) rc = file.ReadChar(&m_color_source);
    if (rc) m_color_source = (unsigned char)ON::ObjectColorSource(m_color_source);

    if (rc) rc = file.ReadChar(&m_linetype_source);
    if (rc) m_linetype_source = (unsigned char)ON::ObjectLinetypeSource(m_linetype_source);

    if (rc) rc = file.ReadChar(&m_material_source);
    if (rc) m_material_source = (unsigned char)ON::ObjectMaterialSource(m_material_source);

    if (rc) rc = file.ReadString(m_name);
    if (rc) rc = file.ReadString(m_url);

    m_bVisible = (Mode() != ON::hidden_object);
    if ( rc && minor_version >= 1 ) 
    {
      rc = file.ReadArray( m_group );
      if ( rc && minor_version >= 2 )
      {
        rc = file.ReadBool(&m_bVisible);

        if ( rc && minor_version >= 3 )
        {
          rc = file.ReadArray(m_dmref);     

          if (rc && minor_version >= 4 )
          {
            // 23 March 2005 Dale Lear
            //    Added m_plot_color_source and m_plot_color
            i = 0;
            if (rc) rc = file.ReadInt(&i);
            if (rc) m_object_decoration = ON::ObjectDecoration(i);
            if (rc) rc = file.ReadChar(&m_plot_color_source);
            if (rc) m_plot_color_source = (unsigned char)ON::PlotColorSource(m_plot_color_source);
            if (rc) rc = file.ReadColor( m_plot_color );
            if (rc) rc = file.ReadChar(&m_plot_weight_source);
            if (rc) m_plot_weight_source = (unsigned char)ON::PlotWeightSource(m_plot_weight_source);
            if (rc) rc = file.ReadDouble(&m_plot_weight_mm);


            if (rc && minor_version >= 5 )
            {
              // version 1.5 fields 11 April 2005
              if (rc) rc = file.ReadInt(&m_linetype_index);

              // version 1.6 fields 2 September 2005
              if (rc && minor_version >= 6 )
              {
                unsigned char uc = 0;
                rc = file.ReadChar(&uc);
                if (rc)
                {
                  m_space = (1 == uc) ? ON::page_space : ON::model_space;
                  m_dmref.Empty();
                  int i, count=0;
                  rc = file.ReadInt(&count);
//.........这里部分代码省略.........

bool ON_3dmObjectAttributes::ReadV5Helper( ON_BinaryArchive& file )
{
  unsigned char itemid, c;
  int major_version = 0;
  int minor_version = 0;
  bool rc = file.Read3dmChunkVersion(&major_version,&minor_version);
  if ( rc && 2 != major_version )
    rc = false;

  itemid = 0xFF;

  while(rc)
  {
    if (!rc) break;
    rc = file.ReadUuid(m_uuid);
    if (!rc) break;
    rc = file.ReadInt(&m_layer_index);
    if (!rc) break;

    // read non-default settings - skip everything else
    rc = file.ReadChar(&itemid);
    if (!rc) break;
    if ( 0 == itemid )
      break;
    
    if ( 1 == itemid )
    {
      rc = file.ReadString(m_name);
      if (!rc) break;
      rc = file.ReadChar(&itemid);
      if ( !rc || 0 == itemid ) break;
    }
    if ( 2 == itemid )
    {
      rc = file.ReadString(m_url);
      if (!rc) break;
      rc = file.ReadChar(&itemid);
      if ( !rc || 0 == itemid ) break;
    }
    if ( 3 == itemid )
    {
      rc = file.ReadInt(&m_linetype_index);
      if (!rc) break;
      rc = file.ReadChar(&itemid);
      if ( !rc || 0 == itemid ) break;
    }
    if ( 4 == itemid )
    {
      rc = file.ReadInt(&m_material_index);
      if (!rc) break;
      rc = file.ReadChar(&itemid);
      if ( !rc || 0 == itemid ) break;
    }
    if ( 5 == itemid )
    {
      rc = m_rendering_attributes.Read(file);
      if (!rc) break;
      rc = file.ReadChar(&itemid);
      if ( !rc || 0 == itemid ) break;
    }
    if ( 6 == itemid )
    {
      rc = file.ReadColor(m_color);
      if (!rc) break;
      rc = file.ReadChar(&itemid);
      if ( !rc || 0 == itemid ) break;
    }
    if ( 7 == itemid )
    {
      rc = file.ReadColor(m_plot_color);
      if (!rc) break;
      rc = file.ReadChar(&itemid);
      if ( !rc || 0 == itemid ) break;
    }
    if ( 8 == itemid )
    {
      rc = file.ReadDouble(&m_plot_weight_mm);
      if (!rc) break;
      rc = file.ReadChar(&itemid);
      if ( !rc || 0 == itemid ) break;
    }
    if ( 9 == itemid )
    {
      rc = file.ReadChar(&c);
      if (!rc) break;
      m_object_decoration = ON::ObjectDecoration(c);
      rc = file.ReadChar(&itemid);
      if ( !rc || 0 == itemid ) break;
    }
    if ( 10 == itemid )
    {
      rc = file.ReadInt(&m_wire_density);
      if (!rc) break;
      rc = file.ReadChar(&itemid);
      if ( !rc || 0 == itemid ) break;
    }
    if ( 11 == itemid )
    {
      rc = file.ReadBool(&m_bVisible);
      if (!rc) break;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
    fbcnt = 0;
    ON_BrepFace& f = NewFace(fi);
    if (rc) rc = file.ReadInt( &i ); // legacy face index
    if (rc) rc = file.ReadInt( &i ); // OBSOLETE f.m_material_index
    int k = f.m_bRev;
    if (rc) rc = file.ReadInt( &k );
    if (rc) f.m_bRev = (k!=0);
    if (rc) rc = file.ReadInt( &ftype_flag );
    if (rc) rc = file.ReadPoint( f.m_bbox.m_min );
    if (rc) rc = file.ReadPoint( f.m_bbox.m_max );
    if (rc) rc = file.ReadInt( &fbcnt);
    if (fbcnt < 1 )
      rc = false;
    for ( fbi = 0; rc && fbi < fbcnt; fbi++ ) {
      btype_flag = 0;
      ON_BrepLoop::TYPE looptype = ON_BrepLoop::unknown;
      if (rc) rc = file.ReadInt( &i ); // legacy loop index
      if (rc) rc = file.ReadInt( &btype_flag );
      switch (btype_flag)
      {
      case 0:
        looptype = ON_BrepLoop::outer;
        break;
      case 1:
        looptype = ON_BrepLoop::inner;
        break;
      case -1:
        looptype = ON_BrepLoop::slit;
        break;
      default:
        looptype = ON_BrepLoop::unknown;
        break;
      }
      if (rc) rc = file.ReadDouble( 2, &bnd_2d_bbox.m_min.x );
      if (rc) rc = file.ReadDouble( 2, &bnd_2d_bbox.m_max.x );
      btcnt = 0;
      if (rc) rc = file.ReadInt( &btcnt );
      if (btcnt < 1 )
        rc = false;
      ON_BrepLoop& bnd = NewLoop(looptype,f);
      for ( bti = 0; rc && bti < btcnt; bti++ ) {
        ON_BrepTrim& trim = NewTrim(false,bnd,m_T.Count());
        te_index.Append(trim.m_trim_index);
        if (rc) rc = file.ReadInt( &i ); // legacy trim index
        if ( trim.m_trim_index != i )
        {
          ON_ERROR("ON_Brep::ReadOld200 - trim.m_trim_index out of synch.");
          //rc = false;
          //break;
        }
        if (rc) rc = file.ReadInt( &twin_index );
        te_twin_index.Append(twin_index);
        b = 0;
        if (rc) rc = file.ReadChar( &b ); // true if legacy trim managed 3d edge
        if (rc) rc = file.ReadInt( &trim.m_ei );
        if (b) {
          if ( trim.m_ei < 0 || trim.m_ei >= c3_count )
          {
            trim.m_ei = -1;
            ON_ERROR("ON_Brep::ReadOld201 - trim.m_ei out of range.");
            rc = false;
            break;
          }
        }
        if ( trim.m_trim_index >= 0 && trim.m_trim_index < c2_count )
          trim.m_c2i = trim.m_trim_index;

bool ON_BezierCage::Read(ON_BinaryArchive& archive)
{
  Destroy();

  int major_version = 0;
  int minor_version = 0;
  bool rc = archive.BeginRead3dmChunk(TCODE_ANONYMOUS_CHUNK,&major_version,&minor_version);
  if ( rc )
  {
    while(rc)
    {
      if ( major_version != 1 )
      {
        ON_ERROR("ON_BezierCage::Read - old code unable to read new version of chunk");
        rc = false;
        break;
      }

      int dim=0,order0=0,order1=0,order2=0;
      bool is_rat=false;

      rc = archive.ReadInt(&dim);
      if (!rc)
        break;
      if (dim < 1 || dim > 10000)
      {
        ON_ERROR("ON_BezierCage::Read - invalid dim");
        rc=false;
        break;
      }

      rc = archive.ReadBool(&is_rat);
      if (!rc)
        break;

      rc = archive.ReadInt(&order0);
      if (!rc)
        break;
      if ( order0 < 2 || order0 > 10000 )
      {
        ON_ERROR("ON_BezierCage::Read - invalid order0");
        rc=false;
        break;
      }

      rc = archive.ReadInt(&order1);
      if (!rc)
        break;
      if ( order1 < 2 || order1 > 10000 )
      {
        ON_ERROR("ON_BezierCage::Read - invalid order1");
        rc=false;
        break;
      }

      rc = archive.ReadInt(&order2);
      if (!rc)
        break;
      if ( order2 < 2 || order2 > 10000 )
      {
        ON_ERROR("ON_BezierCage::Read - invalid order2");
        rc=false;
        break;
      }

      rc = Create(dim,is_rat,order0,order1,order2);
      if (!rc)
        break;

      int i,j,k;
      const int cv_dim = m_is_rat?(m_dim+1):m_dim;
      for(i = 0; i < order0 && rc; i++)
      {
        for(j = 0; j < order1 && rc; j++)
        {
          for ( k = 0; k < order2 && rc; k++)
          {
            rc = archive.ReadDouble(cv_dim,CV(i,j,k));
          }
        }
      }

      break;
    }

    if ( !archive.EndRead3dmChunk() )
    {
      rc = false;
    }
  }
  return rc;
}

BOOL ON_Layer::Read(
       ON_BinaryArchive& file // restore definition from binary archive
     )
{
  int obsolete_value1 = 0; // see ON_Layer::Write
  int major_version=0;
  int minor_version=0;
  int mode = ON::normal_layer;
  Default();
  BOOL rc = file.Read3dmChunkVersion(&major_version,&minor_version);
  if ( rc && major_version == 1 )
  {
    // common to all 1.x formats
    if ( rc ) rc = file.ReadInt( &mode );
    if ( rc )
    {
      switch(mode)
      {
      case 0: // OBSOLETE ON::normal_layer
        m_bVisible = true;
        m_bLocked = false;
        break;
      case 1: // OBSOLETE ON::hidden_layer
        m_bVisible = false;
        m_bLocked = false;
        break;
      case 2: // OBSOLETE ON::locked_layer
        m_bVisible = true;
        m_bLocked = true;
        break;
      default:
        m_bVisible = true;
        m_bLocked = false;
        break;
      }
    }
    if ( rc ) rc = file.ReadInt( &m_layer_index );
    if ( rc ) rc = file.ReadInt( &m_iges_level );
    if ( rc ) rc = file.ReadInt( &m_material_index );
    if ( rc ) rc = file.ReadInt( &obsolete_value1 );
    if ( rc ) rc = file.ReadColor( m_color );

    {
      // OBSOLETE line style was never used - read and discard the next 20 bytes
      short s;
      double x;
      if (rc) file.ReadShort(&s);
      if (rc) file.ReadShort(&s);
      if (rc) file.ReadDouble(&x);
      if (rc) file.ReadDouble(&x);
    }

    if ( rc ) rc = file.ReadString( m_name );
    if ( rc && minor_version >= 1 )
    {
      rc = file.ReadBool(&m_bVisible);
      if ( rc && minor_version >= 2 )
      {
        rc = file.ReadInt( &m_linetype_index);
        if (rc && minor_version >= 3 )
        {
          // 23 March 2005 Dale Lear
          rc = file.ReadColor( m_plot_color);
          if (rc) rc = file.ReadDouble( &m_plot_weight_mm);

          if (rc && minor_version >= 4 )
          {
            rc = file.ReadBool(&m_bLocked);
            if (rc && minor_version >= 5 )
            {
              rc = file.ReadUuid(m_layer_id);
              if ( rc
                   && minor_version >= 6
                   && file.ArchiveOpenNURBSVersion() > 200505110
                 )
              {
                // Some files saved with opennurbs version 200505110
                // do not contain correctly written m_parent_layer_id
                // and m_bExpanded values.
                // It is ok to default these values.
                rc = file.ReadUuid(m_parent_layer_id);
                if (rc)
                  rc = file.ReadBool(&m_bExpanded);

              }

              if ( rc && minor_version >= 7 )
              {
                // 1.7 field - added 6 June 2006
                rc = m_rendering_attributes.Read(file);

                if ( rc && minor_version >= 8 )
                {
                  // 1.8 field - added 19 Sep 2006
                  rc = file.ReadUuid(m_display_material_id);
                }
              }
            }
          }
        }
//.........这里部分代码省略.........

ON_BOOL32 ON_InstanceDefinition::Read(
       ON_BinaryArchive& binary_archive
     )
{
  int major_version = 0;
  int minor_version = 0;

  m_us.m_custom_unit_scale = 0.0;
  m_us.m_custom_unit_name.Destroy();
  m_us.m_unit_system = ON::no_unit_system;
  m_source_bRelativePath = false;
  m_source_archive.Destroy();

  bool rc = binary_archive.Read3dmChunkVersion(&major_version,&minor_version);
  if ( rc )
  {
    if ( major_version != 1 )
      rc = false;
    // version 1.0 fields
    if ( rc )
      rc = binary_archive.ReadUuid( m_uuid );
    if ( rc )
      rc = binary_archive.ReadArray( m_object_uuid );
    if ( rc )
      rc = binary_archive.ReadString( m_name );
    if ( rc )
      rc = binary_archive.ReadString( m_description );
    if ( rc )
      rc = binary_archive.ReadString( m_url );
    if ( rc )
      rc = binary_archive.ReadString( m_url_tag );
    if ( rc )
      rc = binary_archive.ReadBoundingBox( m_bbox );
    // m_idef_update_type was an unsigned int and got changed to an enum.  Read and write
    // as an unsigned int to support backwards compatibility
    unsigned int source = m_idef_update_type;
    if ( rc )
      rc = binary_archive.ReadInt( &source );
    if( rc)
      m_idef_update_type = ON_InstanceDefinition::IdefUpdateType(source);
    if ( rc )
      rc = binary_archive.ReadString( m_source_archive );

    // version 1.1 fields
    if ( minor_version >= 1 )
    {
      if ( rc )
        rc = m_source_archive_checksum.Read( binary_archive );
    }

    // version 1.2 fields
    if ( minor_version >= 2 )
    {
      int us = ON::no_unit_system;
      if ( rc )
        rc = binary_archive.ReadInt( &us );
      m_us.m_unit_system = ON::UnitSystem(us);
      if ( ON::custom_unit_system != m_us.m_unit_system && ON::no_unit_system != m_us.m_unit_system )
      {
        m_us.m_custom_unit_scale = ON::UnitScale( m_us.m_unit_system, ON::meters );
      }
      else
      {
        m_us.m_custom_unit_scale = 0.0;
      }

      if ( minor_version >= 3 )
      {
        // version 1.3 fields - added 6 March 2006
        //int us = ON::no_unit_system;
        if ( rc )
          rc = binary_archive.ReadDouble( &m_us.m_custom_unit_scale );
        if ( rc )
          rc = binary_archive.ReadBool( &m_source_bRelativePath );
        if ( rc && minor_version >= 4 )
        {
          rc = m_us.Read(binary_archive);
          if (rc && minor_version >= 5 )
          {
            rc = binary_archive.ReadInt(&m_idef_update_depth);
          }
        }
      }
    }
  }
  return rc;
}

ON_BOOL32 ON_Font::Read(
       ON_BinaryArchive& file // restore definition from binary archive
     )
{
  Defaults();
  m_font_index = -1;
  int major_version = 0;
  int minor_version = 0;
  bool rc = file.Read3dmChunkVersion(&major_version,&minor_version);
  if ( rc && major_version == 1 ) 
  {
    int i;
    for(;;)
    {
      rc = file.ReadInt( &m_font_index );
      if  (!rc) break;
      rc = file.ReadString( m_font_name );
      if  (!rc) break;

      {
        // 18 October 2002 Dale Lear:
        //   Lowell, wchar_t has different sizes on different OSs.
        //   When writing a wchar_t string, you should use one
        //   of the WriteString functions.  This function must continue
        //   to use ReadShort(64,...) so old files will remain valid.
        unsigned short sh[64];
        rc = file.ReadShort(64, sh);
        if (!rc) break;

        wchar_t facename[65];
        for ( i = 0; i < 64; i++ )
        {
          facename[i] = sh[i];
        }
        facename[64] = 0;
        SetFontFaceName(facename);
      }

      if( minor_version >= 1 )
      {
        rc = file.ReadInt( &i );
        if (!rc) break;
        SetFontWeight(i);

        rc = file.ReadInt( &i);
        if (!rc) break;
        SetIsItalic(i?true:false);

        rc = file.ReadDouble( &m_linefeed_ratio );
        if (!rc) break;

        if ( minor_version >= 2 )
        {
          rc = file.ReadUuid( m_font_id );
          if (!rc) break;
        }
        //if ( minor_version >= 3 )
        //{
        //  rc = file.ReadInt( &i);
        //  if (!rc) break;
        //  SetUnderlined(i?true:false);
        //}
      }

      break;
    }
  }
  else
  {
    ON_ERROR("ON_Font::Read - get newer version of opennurbs");
    rc = false;
  }

  return rc;
}

ON_BOOL32 ON_InstanceDefinition::Read(
       ON_BinaryArchive& binary_archive
     )
{
  int major_version = 0;
  int minor_version = 0;

  m_idef_layer_style = 0;

  m_us.m_custom_unit_scale = 0.0;
  m_us.m_custom_unit_name.Destroy();
  m_us.m_unit_system = ON::no_unit_system;
  m_source_bRelativePath = false;
  m_source_archive.Destroy();

  bool rc = binary_archive.Read3dmChunkVersion(&major_version,&minor_version);
  if ( rc )
  {
    if ( major_version != 1 )
      rc = false;
    // version 1.0 fields
    if ( rc )
      rc = binary_archive.ReadUuid( m_uuid );
    if ( rc )
      rc = binary_archive.ReadArray( m_object_uuid );
    if ( rc )
      rc = binary_archive.ReadString( m_name );
    if ( rc )
      rc = binary_archive.ReadString( m_description );
    if ( rc )
      rc = binary_archive.ReadString( m_url );
    if ( rc )
      rc = binary_archive.ReadString( m_url_tag );
    if ( rc )
      rc = binary_archive.ReadBoundingBox( m_bbox );
    // m_idef_update_type was an unsigned int and got changed to an enum.  Read and write
    // as an unsigned int to support backwards compatibility
    unsigned int source = m_idef_update_type;
    if ( rc )
      rc = binary_archive.ReadInt( &source );
    if( rc)
      m_idef_update_type = ON_InstanceDefinition::IdefUpdateType(source);
    if ( rc )
      rc = binary_archive.ReadString( m_source_archive );

    // version 1.1 fields
    if ( minor_version >= 1 )
    {
      if ( rc )
        rc = m_source_archive_checksum.Read( binary_archive );
    }

    // version 1.2 fields
    if ( minor_version >= 2 )
    {
      int us = ON::no_unit_system;
      if ( rc )
        rc = binary_archive.ReadInt( &us );
      m_us.m_unit_system = ON::UnitSystem(us);
      if ( ON::custom_unit_system != m_us.m_unit_system && ON::no_unit_system != m_us.m_unit_system )
      {
        m_us.m_custom_unit_scale = ON::UnitScale( m_us.m_unit_system, ON::meters );
      }
      else
      {
        m_us.m_custom_unit_scale = 0.0;
      }

      if ( minor_version >= 3 )
      {
        // version 1.3 fields - added 6 March 2006
        //int us = ON::no_unit_system;
        if ( rc )
          rc = binary_archive.ReadDouble( &m_us.m_custom_unit_scale );
        if ( rc )
          rc = binary_archive.ReadBool( &m_source_bRelativePath );
        if ( rc && minor_version >= 4 )
        {
          rc = m_us.Read(binary_archive);
          if (rc && minor_version >= 5 )
          {
            rc = binary_archive.ReadInt(&m_idef_update_depth);

            if ( rc && minor_version >= 6 )
            {
              unsigned int i = 0;
              rc = binary_archive.ReadInt(&i);
              if ( i && i > 0 && i < 256 )
                m_idef_layer_style = (unsigned char)i;
            }
          }
        }
      }
    }

    if ( ON_InstanceDefinition::embedded_def == m_idef_update_type )
    {
      // 7 February 2012
      //   "embedded_def" is obsolete.
      if (m_source_archive.Length() > 0 )
//.........这里部分代码省略.........