WriterImpl.cpp

Go to the documentation of this file.

/*
 * Copyright (c) 2010 Stan Coleby (scoleby@intelisum.com)
 * Copyright (c) 2020 PTC Inc.
 *
 * Permission is hereby granted, free of charge, to any person or organization
 * obtaining a copy of the software and accompanying documentation covered by
 * this license (the "Software") to use, reproduce, display, distribute,
 * execute, and transmit the Software, and to prepare derivative works of the
 * Software, and to permit third-parties to whom the Software is furnished to
 * do so, all subject to the following:
 *
 * The copyright notices in the Software and this entire statement, including
 * the above license grant, this restriction and the following disclaimer,
 * must be included in all copies of the Software, in whole or in part, and
 * all derivative works of the Software, unless such copies or derivative
 * works are solely in the form of machine-executable object code generated by
 * a source language processor.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
 * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
 * FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */
 
#include "WriterImpl.h"
 
#include "Common.h"
#include <cmath>
 
namespace e57
{
 
   WriterImpl::WriterImpl( const ustring &filePath, const ustring &coordinateMetadata ) :
      imf_( filePath, "w" ), root_( imf_.root() ), data3D_( imf_, true ), images2D_( imf_, true )
   {
      // We are using the E57 v1.0 data format standard fieldnames.
      // The standard fieldnames are used without an extension prefix (in the default namespace).
      // We explicitly register it for completeness (the reference implementaion would do it for us, if we didn't).
      imf_.extensionsAdd( "", E57_V1_0_URI );
 
      // Set per-file properties.
      // Path names: "/formatName", "/majorVersion", "/minorVersion", "/coordinateMetadata"
      root_.set( "formatName", StringNode( imf_, "ASTM E57 3D Imaging Data File" ) );
      root_.set( "guid", StringNode( imf_, generateRandomGUID() ) );
 
      // Get ASTM version number supported by library, so can write it into file
      int astmMajor;
      int astmMinor;
      ustring libraryId;
      Utilities::getVersions( astmMajor, astmMinor, libraryId );
 
      root_.set( "versionMajor", IntegerNode( imf_, astmMajor ) );
      root_.set( "versionMinor", IntegerNode( imf_, astmMinor ) );
      root_.set( "e57LibraryVersion", StringNode( imf_, libraryId ) );
 
      // Save a dummy string for coordinate system.
      // Really should be a valid WKT string identifying the coordinate reference system (CRS).
      if ( !coordinateMetadata.empty() )
      {
         root_.set( "coordinateMetadata", StringNode( imf_, coordinateMetadata ) );
      }
 
// Create creationDateTime structure
// Path name: "/creationDateTime
// TODO currently no support for handling UTC <-> GPS time conversions
// note that "creationDateTime" is optional in the standard
#if 0
    StructureNode creationDateTime = StructureNode(imf_);
    creationDateTime.set("dateTimeValue", FloatNode(imf_, GetGPSTime()));
    creationDateTime.set("isAtomicClockReferenced", IntegerNode(imf_,0));
    root_.set("creationDateTime", creationDateTime);
#endif
 
      root_.set( "data3D", data3D_ );
      root_.set( "images2D", images2D_ );
   }
 
   WriterImpl::~WriterImpl()
   {
      if ( IsOpen() )
      {
         Close();
      }
   }
 
   bool WriterImpl::IsOpen() const
   {
      return imf_.isOpen();
   }
 
   bool WriterImpl::Close()
   {
      if ( !IsOpen() )
      {
         return false;
      }
 
      imf_.close();
      return true;
   }
 
   StructureNode WriterImpl::GetRawE57Root()
   {
      return root_;
   }
 
   VectorNode WriterImpl::GetRawData3D()
   {
      return data3D_;
   }
 
   VectorNode WriterImpl::GetRawImages2D()
   {
      return images2D_;
   }
 
   ImageFile WriterImpl::GetRawIMF()
   {
      return imf_;
   }
 
   int64_t WriterImpl::NewImage2D( Image2D &image2DHeader )
   {
      int64_t pos = -1;
 
      StructureNode image = StructureNode( imf_ );
      images2D_.append( image );
      pos = images2D_.childCount() - 1;
 
      if ( image2DHeader.guid.empty() )
      {
         image2DHeader.guid = generateRandomGUID();
      }
 
      image.set( "guid", StringNode( imf_, image2DHeader.guid ) ); // required
 
      if ( !image2DHeader.name.empty() )
      {
         image.set( "name", StringNode( imf_, image2DHeader.name ) );
      }
      if ( !image2DHeader.description.empty() )
      {
         image.set( "description", StringNode( imf_, image2DHeader.description ) );
      }
 
      // Add various sensor and version strings to image.
      if ( !image2DHeader.sensorVendor.empty() )
      {
         image.set( "sensorVendor", StringNode( imf_, image2DHeader.sensorVendor ) );
      }
      if ( !image2DHeader.sensorModel.empty() )
      {
         image.set( "sensorModel", StringNode( imf_, image2DHeader.sensorModel ) );
      }
      if ( !image2DHeader.sensorSerialNumber.empty() )
      {
         image.set( "sensorSerialNumber", StringNode( imf_, image2DHeader.sensorSerialNumber ) );
      }
 
      if ( !image2DHeader.associatedData3DGuid.empty() )
      {
         image.set( "associatedData3DGuid", StringNode( imf_, image2DHeader.associatedData3DGuid ) );
      }
 
      if ( image2DHeader.acquisitionDateTime.dateTimeValue > 0. )
      {
         StructureNode acquisitionDateTime = StructureNode( imf_ );
         image.set( "acquisitionDateTime", acquisitionDateTime );
         acquisitionDateTime.set( "dateTimeValue", FloatNode( imf_, image2DHeader.acquisitionDateTime.dateTimeValue ) );
         acquisitionDateTime.set( "isAtomicClockReferenced",
                                  IntegerNode( imf_, image2DHeader.acquisitionDateTime.isAtomicClockReferenced ) );
      }
 
      // Create pose structure for image.
      if ( image2DHeader.pose != RigidBodyTransform{} )
      {
         StructureNode pose = StructureNode( imf_ );
         image.set( "pose", pose );
 
         StructureNode rotation = StructureNode( imf_ );
         pose.set( "rotation", rotation );
         rotation.set( "w", FloatNode( imf_, image2DHeader.pose.rotation.w ) );
         rotation.set( "x", FloatNode( imf_, image2DHeader.pose.rotation.x ) );
         rotation.set( "y", FloatNode( imf_, image2DHeader.pose.rotation.y ) );
         rotation.set( "z", FloatNode( imf_, image2DHeader.pose.rotation.z ) );
 
         StructureNode translation = StructureNode( imf_ );
         pose.set( "translation", translation );
         translation.set( "x", FloatNode( imf_, image2DHeader.pose.translation.x ) );
         translation.set( "y", FloatNode( imf_, image2DHeader.pose.translation.y ) );
         translation.set( "z", FloatNode( imf_, image2DHeader.pose.translation.z ) );
      }
 
      if ( image2DHeader.visualReferenceRepresentation.jpegImageSize > 0 ||
           image2DHeader.visualReferenceRepresentation.pngImageSize > 0 )
      {
         StructureNode visualReferenceRepresentation = StructureNode( imf_ );
         image.set( "visualReferenceRepresentation", visualReferenceRepresentation );
 
         if ( image2DHeader.visualReferenceRepresentation.jpegImageSize > 0 )
         {
            visualReferenceRepresentation.set(
               "jpegImage", BlobNode( imf_, image2DHeader.visualReferenceRepresentation.jpegImageSize ) );
         }
         else if ( image2DHeader.visualReferenceRepresentation.pngImageSize > 0 )
         {
            visualReferenceRepresentation.set(
               "pngImage", BlobNode( imf_, image2DHeader.visualReferenceRepresentation.pngImageSize ) );
         }
         if ( image2DHeader.visualReferenceRepresentation.imageMaskSize > 0 )
         {
            visualReferenceRepresentation.set(
               "imageMask", BlobNode( imf_, image2DHeader.visualReferenceRepresentation.imageMaskSize ) );
         }
 
         visualReferenceRepresentation.set(
            "imageHeight", IntegerNode( imf_, image2DHeader.visualReferenceRepresentation.imageHeight ) );
         visualReferenceRepresentation.set(
            "imageWidth", IntegerNode( imf_, image2DHeader.visualReferenceRepresentation.imageWidth ) );
      }
      else if ( image2DHeader.pinholeRepresentation.jpegImageSize > 0 ||
                image2DHeader.pinholeRepresentation.pngImageSize > 0 )
      {
         StructureNode pinholeRepresentation = StructureNode( imf_ );
         image.set( "pinholeRepresentation", pinholeRepresentation );
 
         if ( image2DHeader.pinholeRepresentation.jpegImageSize > 0 )
         {
            pinholeRepresentation.set( "jpegImage",
                                       BlobNode( imf_, image2DHeader.pinholeRepresentation.jpegImageSize ) );
         }
         else if ( image2DHeader.pinholeRepresentation.pngImageSize > 0 )
         {
            pinholeRepresentation.set( "pngImage", BlobNode( imf_, image2DHeader.pinholeRepresentation.pngImageSize ) );
         }
         if ( image2DHeader.pinholeRepresentation.imageMaskSize > 0 )
         {
            pinholeRepresentation.set( "imageMask",
                                       BlobNode( imf_, image2DHeader.pinholeRepresentation.imageMaskSize ) );
         }
 
         pinholeRepresentation.set( "focalLength", FloatNode( imf_, image2DHeader.pinholeRepresentation.focalLength ) );
         pinholeRepresentation.set( "imageHeight",
                                    IntegerNode( imf_, image2DHeader.pinholeRepresentation.imageHeight ) );
         pinholeRepresentation.set( "imageWidth", IntegerNode( imf_, image2DHeader.pinholeRepresentation.imageWidth ) );
         pinholeRepresentation.set( "pixelHeight", FloatNode( imf_, image2DHeader.pinholeRepresentation.pixelHeight ) );
         pinholeRepresentation.set( "pixelWidth", FloatNode( imf_, image2DHeader.pinholeRepresentation.pixelWidth ) );
         pinholeRepresentation.set( "principalPointX",
                                    FloatNode( imf_, image2DHeader.pinholeRepresentation.principalPointX ) );
         pinholeRepresentation.set( "principalPointY",
                                    FloatNode( imf_, image2DHeader.pinholeRepresentation.principalPointY ) );
      }
      else if ( image2DHeader.sphericalRepresentation.jpegImageSize > 0 ||
                image2DHeader.sphericalRepresentation.pngImageSize > 0 )
      {
         StructureNode sphericalRepresentation = StructureNode( imf_ );
         image.set( "sphericalRepresentation", sphericalRepresentation );
 
         if ( image2DHeader.sphericalRepresentation.jpegImageSize > 0 )
         {
            sphericalRepresentation.set( "jpegImage",
                                         BlobNode( imf_, image2DHeader.sphericalRepresentation.jpegImageSize ) );
         }
         else if ( image2DHeader.sphericalRepresentation.pngImageSize > 0 )
         {
            sphericalRepresentation.set( "pngImage",
                                         BlobNode( imf_, image2DHeader.sphericalRepresentation.pngImageSize ) );
         }
         if ( image2DHeader.sphericalRepresentation.imageMaskSize > 0 )
         {
            sphericalRepresentation.set( "imageMask",
                                         BlobNode( imf_, image2DHeader.sphericalRepresentation.imageMaskSize ) );
         }
 
         sphericalRepresentation.set( "imageHeight",
                                      IntegerNode( imf_, image2DHeader.sphericalRepresentation.imageHeight ) );
         sphericalRepresentation.set( "imageWidth",
                                      IntegerNode( imf_, image2DHeader.sphericalRepresentation.imageWidth ) );
         sphericalRepresentation.set( "pixelHeight",
                                      FloatNode( imf_, image2DHeader.sphericalRepresentation.pixelHeight ) );
         sphericalRepresentation.set( "pixelWidth",
                                      FloatNode( imf_, image2DHeader.sphericalRepresentation.pixelWidth ) );
      }
      else if ( image2DHeader.cylindricalRepresentation.jpegImageSize > 0 ||
                image2DHeader.cylindricalRepresentation.pngImageSize > 0 )
      {
         StructureNode cylindricalRepresentation = StructureNode( imf_ );
         image.set( "cylindricalRepresentation", cylindricalRepresentation );
 
         if ( image2DHeader.cylindricalRepresentation.jpegImageSize > 0 )
         {
            cylindricalRepresentation.set( "jpegImage",
                                           BlobNode( imf_, image2DHeader.cylindricalRepresentation.jpegImageSize ) );
         }
         else if ( image2DHeader.cylindricalRepresentation.pngImageSize > 0 )
         {
            cylindricalRepresentation.set( "pngImage",
                                           BlobNode( imf_, image2DHeader.cylindricalRepresentation.pngImageSize ) );
         }
         if ( image2DHeader.cylindricalRepresentation.imageMaskSize > 0 )
         {
            cylindricalRepresentation.set( "imageMask",
                                           BlobNode( imf_, image2DHeader.cylindricalRepresentation.imageMaskSize ) );
         }
 
         cylindricalRepresentation.set( "imageHeight",
                                        IntegerNode( imf_, image2DHeader.cylindricalRepresentation.imageHeight ) );
         cylindricalRepresentation.set( "imageWidth",
                                        IntegerNode( imf_, image2DHeader.cylindricalRepresentation.imageWidth ) );
         cylindricalRepresentation.set( "pixelHeight",
                                        FloatNode( imf_, image2DHeader.cylindricalRepresentation.pixelHeight ) );
         cylindricalRepresentation.set( "pixelWidth",
                                        FloatNode( imf_, image2DHeader.cylindricalRepresentation.pixelWidth ) );
         cylindricalRepresentation.set( "principalPointY",
                                        FloatNode( imf_, image2DHeader.cylindricalRepresentation.principalPointY ) );
         cylindricalRepresentation.set( "radius", FloatNode( imf_, image2DHeader.cylindricalRepresentation.radius ) );
      }
      return pos;
   }
 
   // This function reads one of the image blobs
   int64_t WriterImpl::WriteImage2DNode( StructureNode image, Image2DType imageType, void *pBuffer, int64_t start,
                                         int64_t count )
   {
      int64_t transferred = 0;
      switch ( imageType )
      {
         case E57_NO_IMAGE:
         {
            return 0;
         }
         case E57_JPEG_IMAGE:
         {
            if ( image.isDefined( "jpegImage" ) )
            {
               BlobNode jpegImage( image.get( "jpegImage" ) );
               jpegImage.write( (uint8_t *)pBuffer, start, (size_t)count );
               transferred = count;
            }
            break;
         }
         case E57_PNG_IMAGE:
         {
            if ( image.isDefined( "pngImage" ) )
            {
               BlobNode pngImage( image.get( "pngImage" ) );
               pngImage.write( (uint8_t *)pBuffer, start, (size_t)count );
               transferred = count;
            }
            break;
         }
         case E57_PNG_IMAGE_MASK:
         {
            if ( image.isDefined( "imageMask" ) )
            {
               BlobNode imageMask( image.get( "imageMask" ) );
               imageMask.write( (uint8_t *)pBuffer, start, (size_t)count );
               transferred = count;
            }
            break;
         }
      }
      return transferred;
   }
 
   int64_t WriterImpl::WriteImage2DData( int64_t imageIndex, Image2DType imageType, Image2DProjection imageProjection,
                                         void *pBuffer, int64_t start, int64_t count )
   {
      if ( ( imageIndex < 0 ) || ( imageIndex >= images2D_.childCount() ) )
      {
         return 0;
      }
 
      int64_t transferred = 0;
      StructureNode image( images2D_.get( imageIndex ) );
 
      switch ( imageProjection )
      {
         case E57_NO_PROJECTION:
            return 0;
         case E57_VISUAL:
            if ( image.isDefined( "visualReferenceRepresentation" ) )
            {
               StructureNode visualReferenceRepresentation( image.get( "visualReferenceRepresentation" ) );
               transferred = WriteImage2DNode( visualReferenceRepresentation, imageType, pBuffer, start, count );
            }
            break;
         case E57_PINHOLE:
            if ( image.isDefined( "pinholeRepresentation" ) )
            {
               StructureNode pinholeRepresentation( image.get( "pinholeRepresentation" ) );
               transferred = WriteImage2DNode( pinholeRepresentation, imageType, pBuffer, start, count );
            }
            break;
         case E57_SPHERICAL:
            if ( image.isDefined( "sphericalRepresentation" ) )
            {
               StructureNode sphericalRepresentation( image.get( "sphericalRepresentation" ) );
               transferred = WriteImage2DNode( sphericalRepresentation, imageType, pBuffer, start, count );
            }
            break;
         case E57_CYLINDRICAL:
            if ( image.isDefined( "cylindricalRepresentation" ) )
            {
               StructureNode cylindricalRepresentation( image.get( "cylindricalRepresentation" ) );
               transferred = WriteImage2DNode( cylindricalRepresentation, imageType, pBuffer, start, count );
            }
            break;
      }
      return transferred;
   }
 
   int64_t WriterImpl::NewData3D( Data3D &data3DHeader )
   {
      int64_t pos = -1;
 
      if ( data3DHeader.guid.empty() )
      {
         data3DHeader.guid = generateRandomGUID();
      }
 
      StructureNode scan = StructureNode( imf_ );
      data3D_.append( scan );
      pos = data3D_.childCount() - 1;
 
      scan.set( "guid", StringNode( imf_, data3DHeader.guid ) ); // required
 
      if ( !data3DHeader.name.empty() )
      {
         scan.set( "name", StringNode( imf_, data3DHeader.name ) );
      }
 
      if ( !data3DHeader.description.empty() )
      {
         scan.set( "description", StringNode( imf_, data3DHeader.description ) );
      }
 
      if ( data3DHeader.originalGuids.size() > 0 )
      {
         scan.set( "originalGuids", VectorNode( imf_ ) );
         VectorNode originalGuids( scan.get( "originalGuids" ) );
         int i;
         for ( i = 0; i < (int)data3DHeader.originalGuids.size(); i++ )
         {
            originalGuids.append( StringNode( imf_, data3DHeader.originalGuids[i] ) );
         }
      }
 
      // Add various sensor and version strings to scan.
      // Path names: "/data3D/0/sensorVendor", etc...
      if ( !data3DHeader.sensorVendor.empty() )
      {
         scan.set( "sensorVendor", StringNode( imf_, data3DHeader.sensorVendor ) );
      }
      if ( !data3DHeader.sensorModel.empty() )
      {
         scan.set( "sensorModel", StringNode( imf_, data3DHeader.sensorModel ) );
      }
      if ( !data3DHeader.sensorSerialNumber.empty() )
      {
         scan.set( "sensorSerialNumber", StringNode( imf_, data3DHeader.sensorSerialNumber ) );
      }
      if ( !data3DHeader.sensorHardwareVersion.empty() )
      {
         scan.set( "sensorHardwareVersion", StringNode( imf_, data3DHeader.sensorHardwareVersion ) );
      }
      if ( !data3DHeader.sensorSoftwareVersion.empty() )
      {
         scan.set( "sensorSoftwareVersion", StringNode( imf_, data3DHeader.sensorSoftwareVersion ) );
      }
      if ( !data3DHeader.sensorFirmwareVersion.empty() )
      {
         scan.set( "sensorFirmwareVersion", StringNode( imf_, data3DHeader.sensorFirmwareVersion ) );
      }
 
      // Add temp/humidity to scan.
      // Path names: "/data3D/0/temperature", etc...
      if ( data3DHeader.temperature != E57_FLOAT_MAX )
      {
         scan.set( "temperature", FloatNode( imf_, data3DHeader.temperature ) );
      }
 
      if ( data3DHeader.relativeHumidity != E57_FLOAT_MAX )
      {
         scan.set( "relativeHumidity", FloatNode( imf_, data3DHeader.relativeHumidity ) );
      }
 
      if ( data3DHeader.atmosphericPressure != E57_FLOAT_MAX )
      {
         scan.set( "atmosphericPressure", FloatNode( imf_, data3DHeader.atmosphericPressure ) );
      }
 
      if ( data3DHeader.indexBounds != IndexBounds{} )
      {
         StructureNode ibox = StructureNode( imf_ );
 
         if ( ( data3DHeader.indexBounds.rowMinimum != 0 ) || ( data3DHeader.indexBounds.rowMaximum != 0 ) )
         {
            ibox.set( "rowMinimum", IntegerNode( imf_, data3DHeader.indexBounds.rowMinimum ) );
            ibox.set( "rowMaximum", IntegerNode( imf_, data3DHeader.indexBounds.rowMaximum ) );
         }
         if ( ( data3DHeader.indexBounds.columnMinimum != 0 ) || ( data3DHeader.indexBounds.columnMaximum != 0 ) )
         {
            ibox.set( "columnMinimum", IntegerNode( imf_, data3DHeader.indexBounds.columnMinimum ) );
            ibox.set( "columnMaximum", IntegerNode( imf_, data3DHeader.indexBounds.columnMaximum ) );
         }
         if ( ( data3DHeader.indexBounds.returnMinimum != 0 ) || ( data3DHeader.indexBounds.returnMaximum != 0 ) )
         {
            ibox.set( "returnMinimum", IntegerNode( imf_, data3DHeader.indexBounds.returnMinimum ) );
            ibox.set( "returnMaximum", IntegerNode( imf_, data3DHeader.indexBounds.returnMaximum ) );
         }
         scan.set( "indexBounds", ibox );
      }
 
      if ( ( data3DHeader.intensityLimits.intensityMaximum != 0. ) ||
           ( data3DHeader.intensityLimits.intensityMinimum != 0. ) )
      {
         StructureNode intbox = StructureNode( imf_ );
         if ( data3DHeader.pointFields.intensityScaledInteger > 0. )
         {
            double offset = 0.;
            double scale = data3DHeader.pointFields.intensityScaledInteger;
 
            int64_t rawIntegerMinimum =
               (int64_t)floor( ( data3DHeader.intensityLimits.intensityMinimum - offset ) / scale + .5 );
            int64_t rawIntegerMaximum =
               (int64_t)floor( ( data3DHeader.intensityLimits.intensityMaximum - offset ) / scale + .5 );
 
            intbox.set( "intensityMaximum", ScaledIntegerNode( imf_, rawIntegerMaximum, rawIntegerMinimum,
                                                               rawIntegerMaximum, scale, offset ) );
 
            intbox.set( "intensityMinimum", ScaledIntegerNode( imf_, rawIntegerMinimum, rawIntegerMinimum,
                                                               rawIntegerMaximum, scale, offset ) );
         }
         else if ( data3DHeader.pointFields.intensityScaledInteger == 0. )
         {
            intbox.set( "intensityMaximum", FloatNode( imf_, data3DHeader.intensityLimits.intensityMaximum ) );
            intbox.set( "intensityMinimum", FloatNode( imf_, data3DHeader.intensityLimits.intensityMinimum ) );
         }
         else
         {
            intbox.set( "intensityMaximum",
                        IntegerNode( imf_, (int64_t)data3DHeader.intensityLimits.intensityMaximum ) );
            intbox.set( "intensityMinimum",
                        IntegerNode( imf_, (int64_t)data3DHeader.intensityLimits.intensityMinimum ) );
         }
         scan.set( "intensityLimits", intbox );
      }
 
      if ( ( data3DHeader.colorLimits.colorRedMaximum != 0. ) || ( data3DHeader.colorLimits.colorRedMinimum != 0. ) )
      {
         StructureNode colorbox = StructureNode( imf_ );
         colorbox.set( "colorRedMaximum", IntegerNode( imf_, (int64_t)data3DHeader.colorLimits.colorRedMaximum ) );
         colorbox.set( "colorRedMinimum", IntegerNode( imf_, (int64_t)data3DHeader.colorLimits.colorRedMinimum ) );
         colorbox.set( "colorGreenMaximum", IntegerNode( imf_, (int64_t)data3DHeader.colorLimits.colorGreenMaximum ) );
         colorbox.set( "colorGreenMinimum", IntegerNode( imf_, (int64_t)data3DHeader.colorLimits.colorGreenMinimum ) );
         colorbox.set( "colorBlueMaximum", IntegerNode( imf_, (int64_t)data3DHeader.colorLimits.colorBlueMaximum ) );
         colorbox.set( "colorBlueMinimum", IntegerNode( imf_, (int64_t)data3DHeader.colorLimits.colorBlueMinimum ) );
         scan.set( "colorLimits", colorbox );
      }
 
      // Add Cartesian bounding box to scan.
      // Path names: "/data3D/0/cartesianBounds/xMinimum", etc...
      if ( ( data3DHeader.cartesianBounds.xMinimum != -E57_DOUBLE_MAX ) ||
           ( data3DHeader.cartesianBounds.xMaximum != E57_DOUBLE_MAX ) )
      {
         StructureNode bbox = StructureNode( imf_ );
         bbox.set( "xMinimum", FloatNode( imf_, data3DHeader.cartesianBounds.xMinimum ) );
         bbox.set( "xMaximum", FloatNode( imf_, data3DHeader.cartesianBounds.xMaximum ) );
         bbox.set( "yMinimum", FloatNode( imf_, data3DHeader.cartesianBounds.yMinimum ) );
         bbox.set( "yMaximum", FloatNode( imf_, data3DHeader.cartesianBounds.yMaximum ) );
         bbox.set( "zMinimum", FloatNode( imf_, data3DHeader.cartesianBounds.zMinimum ) );
         bbox.set( "zMaximum", FloatNode( imf_, data3DHeader.cartesianBounds.zMaximum ) );
         scan.set( "cartesianBounds", bbox );
      }
 
      if ( ( data3DHeader.sphericalBounds.rangeMinimum != 0. ) ||
           ( data3DHeader.sphericalBounds.rangeMaximum != E57_DOUBLE_MAX ) )
      {
         StructureNode sbox = StructureNode( imf_ );
         sbox.set( "rangeMinimum", FloatNode( imf_, data3DHeader.sphericalBounds.rangeMinimum ) );
         sbox.set( "rangeMaximum", FloatNode( imf_, data3DHeader.sphericalBounds.rangeMaximum ) );
         sbox.set( "elevationMinimum", FloatNode( imf_, data3DHeader.sphericalBounds.elevationMinimum ) );
         sbox.set( "elevationMaximum", FloatNode( imf_, data3DHeader.sphericalBounds.elevationMaximum ) );
         sbox.set( "azimuthStart", FloatNode( imf_, data3DHeader.sphericalBounds.azimuthStart ) );
         sbox.set( "azimuthEnd", FloatNode( imf_, data3DHeader.sphericalBounds.azimuthEnd ) );
         scan.set( "sphericalBounds", sbox );
      }
 
      // Create pose structure for scan.
      // Path names: "/data3D/0/pose/rotation/w", etc...
      //             "/data3D/0/pose/translation/x", etc...
      if ( data3DHeader.pose != RigidBodyTransform{} )
      {
         StructureNode pose = StructureNode( imf_ );
         scan.set( "pose", pose );
 
         StructureNode rotation = StructureNode( imf_ );
         rotation.set( "w", FloatNode( imf_, data3DHeader.pose.rotation.w ) );
         rotation.set( "x", FloatNode( imf_, data3DHeader.pose.rotation.x ) );
         rotation.set( "y", FloatNode( imf_, data3DHeader.pose.rotation.y ) );
         rotation.set( "z", FloatNode( imf_, data3DHeader.pose.rotation.z ) );
         pose.set( "rotation", rotation );
 
         StructureNode translation = StructureNode( imf_ );
         translation.set( "x", FloatNode( imf_, data3DHeader.pose.translation.x ) );
         translation.set( "y", FloatNode( imf_, data3DHeader.pose.translation.y ) );
         translation.set( "z", FloatNode( imf_, data3DHeader.pose.translation.z ) );
         pose.set( "translation", translation );
      }
 
      // Add start/stop acquisition times to scan.
      // Path names: "/data3D/0/acquisitionStart/dateTimeValue",
      //             "/data3D/0/acquisitionEnd/dateTimeValue"
      if ( data3DHeader.acquisitionStart.dateTimeValue > 0. )
      {
         StructureNode acquisitionStart = StructureNode( imf_ );
         scan.set( "acquisitionStart", acquisitionStart );
         acquisitionStart.set( "dateTimeValue", FloatNode( imf_, data3DHeader.acquisitionStart.dateTimeValue ) );
         acquisitionStart.set( "isAtomicClockReferenced",
                               IntegerNode( imf_, data3DHeader.acquisitionStart.isAtomicClockReferenced ) );
      }
      if ( data3DHeader.acquisitionEnd.dateTimeValue > 0. )
      {
         StructureNode acquisitionEnd = StructureNode( imf_ );
         scan.set( "acquisitionEnd", acquisitionEnd );
         acquisitionEnd.set( "dateTimeValue", FloatNode( imf_, data3DHeader.acquisitionEnd.dateTimeValue ) );
         acquisitionEnd.set( "isAtomicClockReferenced",
                             IntegerNode( imf_, data3DHeader.acquisitionEnd.isAtomicClockReferenced ) );
      }
 
      // Add grouping scheme area
      // Path name: "/data3D/0/pointGroupingSchemes"
      if ( !data3DHeader.pointGroupingSchemes.groupingByLine.idElementName.empty() )
      {
         StructureNode pointGroupingSchemes = StructureNode( imf_ );
         scan.set( "pointGroupingSchemes", pointGroupingSchemes );
 
         // Add a line grouping scheme
         // Path name: "/data3D/0/pointGroupingSchemes/groupingByLine"
         StructureNode groupingByLine = StructureNode( imf_ );
         pointGroupingSchemes.set( "groupingByLine", groupingByLine );
 
         // data3DHeader.pointGroupingSchemes.groupingByLine.idElementName));
         bool byColumn = true; // default should be "columnIndex"
         if ( data3DHeader.pointGroupingSchemes.groupingByLine.idElementName.compare( "rowIndex" ) == 0 )
         {
            byColumn = false;
         }
 
         // Add idElementName to groupingByLine, specify a line is column or row oriented
         // Path name: "/data3D/0/pointGroupingSchemes/groupingByLine/idElementName"
         if ( byColumn )
         {
            groupingByLine.set( "idElementName", StringNode( imf_, "columnIndex" ) );
         }
         else
         {
            groupingByLine.set( "idElementName", StringNode( imf_, "rowIndex" ) );
         }
 
         // Make a prototype of datatypes that will be stored in LineGroupRecord.
         // This prototype will be used in creating the groups CompressedVector.
         // Will define path names like:
         //     "/data3D/0/pointGroupingSchemes/groupingByLine/groups/0/idElementValue"
         int64_t groupsSize = data3DHeader.pointGroupingSchemes.groupingByLine.groupsSize;
         int64_t countSize = data3DHeader.pointGroupingSchemes.groupingByLine.pointCountSize;
         int64_t pointsSize = data3DHeader.pointsSize;
 
         StructureNode lineGroupProto = StructureNode( imf_ );
         lineGroupProto.set( "startPointIndex", IntegerNode( imf_, 0, 0, pointsSize - 1 ) );
         lineGroupProto.set( "idElementValue", IntegerNode( imf_, 0, 0, groupsSize - 1 ) );
         lineGroupProto.set( "pointCount", IntegerNode( imf_, 0, 0, countSize ) );
 
         // Not supported in this Simple API for now
         /*
               StructureNode bbox = StructureNode(imf_);
               bbox.set("xMinimum", FloatNode(imf_, 0., E57_SINGLE,
                     data3DHeader.pointFields.pointRangeMinimum,    data3DHeader.pointFields.pointRangeMaximum));
               bbox.set("xMaximum", FloatNode(imf_, 0., E57_SINGLE,
                     data3DHeader.pointFields.pointRangeMinimum,    data3DHeader.pointFields.pointRangeMaximum));
               bbox.set("yMinimum", FloatNode(imf_, 0., E57_SINGLE,
                     data3DHeader.pointFields.pointRangeMinimum,    data3DHeader.pointFields.pointRangeMaximum));
               bbox.set("yMaximum", FloatNode(imf_, 0., E57_SINGLE,
                     data3DHeader.pointFields.pointRangeMinimum,    data3DHeader.pointFields.pointRangeMaximum));
               bbox.set("zMinimum", FloatNode(imf_, 0., E57_SINGLE,
                     data3DHeader.pointFields.pointRangeMinimum,    data3DHeader.pointFields.pointRangeMaximum));
               bbox.set("zMaximum", FloatNode(imf_, 0., E57_SINGLE,
                     data3DHeader.pointFields.pointRangeMinimum,    data3DHeader.pointFields.pointRangeMaximum));
               lineGroupProto.set("cartesianBounds", bbox);
 
               StructureNode sbox = StructureNode(imf_);
               sbox.set("rangeMinimum", FloatNode(imf_, 0., E57_SINGLE,
                     data3DHeader.pointFields.pointRangeMinimum,    data3DHeader.pointFields.pointRangeMaximum));
               sbox.set("rangeMaximum", FloatNode(imf_, 0., E57_SINGLE,
                     data3DHeader.pointFields.pointRangeMinimum,    data3DHeader.pointFields.pointRangeMaximum));
               sbox.set("elevationMinimum", FloatNode(imf_, 0., E57_SINGLE,
                     data3DHeader.pointFields.angleMinimum, data3DHeader.pointFields.angleMaximum));
               sbox.set("elevationMaximum", FloatNode(imf_, 0., E57_SINGLE,
                     data3DHeader.pointFields.angleMinimum, data3DHeader.pointFields.angleMaximum));
               sbox.set("azimuthStart", FloatNode(imf_, 0., E57_SINGLE,
                     data3DHeader.pointFields.angleMinimum, data3DHeader.pointFields.angleMaximum));
               sbox.set("azimuthEnd", FloatNode(imf_, 0., E57_SINGLE,
                     data3DHeader.pointFields.angleMinimum, data3DHeader.pointFields.angleMaximum));
               lineGroupProto.set("sphericalBounds", sbox);
         */
         // Make empty codecs vector for use in creating groups CompressedVector.
         // If this vector is empty, it is assumed that all fields will use the BitPack codec.
         VectorNode lineGroupCodecs = VectorNode( imf_, true );
 
         // Create CompressedVector for storing groups.
         // Path Name: "/data3D/0/pointGroupingSchemes/groupingByLine/groups".
         // We use the prototype and empty codecs tree from above.
         // The CompressedVector will be filled by code below.
         CompressedVectorNode groups = CompressedVectorNode( imf_, lineGroupProto, lineGroupCodecs );
         groupingByLine.set( "groups", groups );
      }
 
      // Make a prototype of datatypes that will be stored in points record.
      // This prototype will be used in creating the points CompressedVector.
      // Using this proto in a CompressedVector will define path names like:
      //      "/data3D/0/points/0/cartesianX"
      StructureNode proto = StructureNode( imf_ );
 
      // Because ScaledInteger min/max are the raw integer min/max, we must calculate them from the data min/max
      const double pointRangeScale = data3DHeader.pointFields.pointRangeScaledInteger;
      const double pointRangeOffset = 0.;
      int64_t pointRangeMinimum =
         (int64_t)floor( ( data3DHeader.pointFields.pointRangeMinimum - pointRangeOffset ) / pointRangeScale + .5 );
      int64_t pointRangeMaximum =
         (int64_t)floor( ( data3DHeader.pointFields.pointRangeMaximum - pointRangeOffset ) / pointRangeScale + .5 );
 
      const auto getPointProto = [=]() -> Node {
         if ( pointRangeScale > E57_NOT_SCALED_USE_FLOAT )
         {
            return ScaledIntegerNode( imf_, 0, pointRangeMinimum, pointRangeMaximum, pointRangeScale,
                                      pointRangeOffset );
         }
         else
         {
            return FloatNode( imf_, 0., ( pointRangeScale < E57_NOT_SCALED_USE_FLOAT ) ? E57_DOUBLE : E57_SINGLE,
                              data3DHeader.pointFields.pointRangeMinimum, data3DHeader.pointFields.pointRangeMaximum );
         }
      };
 
      if ( data3DHeader.pointFields.cartesianXField )
      {
         proto.set( "cartesianX", getPointProto() );
      }
      if ( data3DHeader.pointFields.cartesianYField )
      {
         proto.set( "cartesianY", getPointProto() );
      }
 
      if ( data3DHeader.pointFields.cartesianZField )
      {
         proto.set( "cartesianZ", getPointProto() );
      }
 
      if ( data3DHeader.pointFields.sphericalRangeField )
      {
         proto.set( "sphericalRange", getPointProto() );
      }
 
      const double angleScale = data3DHeader.pointFields.angleScaledInteger;
      const double angleOffset = 0.;
      int64_t angleMinimum =
         (int64_t)std::floor( ( data3DHeader.pointFields.angleMinimum - angleOffset ) / angleScale + .5 );
      int64_t angleMaximum =
         (int64_t)std::floor( ( data3DHeader.pointFields.angleMaximum - angleOffset ) / angleScale + .5 );
 
      const auto getAngleProto = [=]() -> Node {
         if ( angleScale > E57_NOT_SCALED_USE_FLOAT )
         {
            return ScaledIntegerNode( imf_, 0, angleMinimum, angleMaximum, angleScale, angleOffset );
         }
         else
         {
            return FloatNode( imf_, 0., ( angleScale < E57_NOT_SCALED_USE_FLOAT ) ? E57_DOUBLE : E57_SINGLE,
                              data3DHeader.pointFields.angleMinimum, data3DHeader.pointFields.angleMaximum );
         }
      };
 
      if ( data3DHeader.pointFields.sphericalAzimuthField )
      {
         proto.set( "sphericalAzimuth", getAngleProto() );
      }
 
      if ( data3DHeader.pointFields.sphericalElevationField )
      {
         proto.set( "sphericalElevation", getAngleProto() );
      }
 
      if ( data3DHeader.pointFields.intensityField )
      {
         if ( data3DHeader.pointFields.intensityScaledInteger > 0. )
         {
            double offset = 0; // could be data3DHeader.intensityLimits.intensityMinimum;
            double scale = data3DHeader.pointFields.intensityScaledInteger;
            int64_t rawIntegerMinimum =
               (int64_t)floor( ( data3DHeader.intensityLimits.intensityMinimum - offset ) / scale + .5 );
            int64_t rawIntegerMaximum =
               (int64_t)floor( ( data3DHeader.intensityLimits.intensityMaximum - offset ) / scale + .5 );
            proto.set( "intensity", ScaledIntegerNode( imf_, 0, rawIntegerMinimum, rawIntegerMaximum, scale, offset ) );
         }
         else if ( data3DHeader.pointFields.intensityScaledInteger == E57_NOT_SCALED_USE_FLOAT )
         {
            proto.set( "intensity", FloatNode( imf_, 0., E57_SINGLE, data3DHeader.intensityLimits.intensityMinimum,
                                               data3DHeader.intensityLimits.intensityMaximum ) );
         }
         else
         {
            proto.set( "intensity", IntegerNode( imf_, 0, (int64_t)data3DHeader.intensityLimits.intensityMinimum,
                                                 (int64_t)data3DHeader.intensityLimits.intensityMaximum ) );
         }
      }
 
      if ( data3DHeader.pointFields.colorRedField )
      {
         proto.set( "colorRed", IntegerNode( imf_, 0, (int64_t)data3DHeader.colorLimits.colorRedMinimum,
                                             (int64_t)data3DHeader.colorLimits.colorRedMaximum ) );
      }
      if ( data3DHeader.pointFields.colorGreenField )
      {
         proto.set( "colorGreen", IntegerNode( imf_, 0, (int64_t)data3DHeader.colorLimits.colorGreenMinimum,
                                               (int64_t)data3DHeader.colorLimits.colorGreenMaximum ) );
      }
      if ( data3DHeader.pointFields.colorBlueField )
      {
         proto.set( "colorBlue", IntegerNode( imf_, 0, (int64_t)data3DHeader.colorLimits.colorBlueMinimum,
                                              (int64_t)data3DHeader.colorLimits.colorBlueMaximum ) );
      }
 
      if ( data3DHeader.pointFields.returnIndexField )
      {
         proto.set( "returnIndex", IntegerNode( imf_, 0, E57_UINT8_MIN, data3DHeader.pointFields.returnMaximum ) );
      }
      if ( data3DHeader.pointFields.returnCountField )
      {
         proto.set( "returnCount", IntegerNode( imf_, 0, E57_UINT8_MIN, data3DHeader.pointFields.returnMaximum ) );
      }
 
      if ( data3DHeader.pointFields.rowIndexField )
      {
         proto.set( "rowIndex", IntegerNode( imf_, 0, E57_UINT32_MIN, data3DHeader.pointFields.rowIndexMaximum ) );
      }
      if ( data3DHeader.pointFields.columnIndexField )
      {
         proto.set( "columnIndex",
                    IntegerNode( imf_, 0, E57_UINT32_MIN, data3DHeader.pointFields.columnIndexMaximum ) );
      }
 
      if ( data3DHeader.pointFields.timeStampField )
      {
         if ( data3DHeader.pointFields.timeScaledInteger > 0. )
         {
            double offset = 0;
            double scale = data3DHeader.pointFields.timeScaledInteger;
            int64_t rawIntegerMinimum =
               (int64_t)floor( ( data3DHeader.pointFields.timeMinimum - offset ) / scale + .5 );
            int64_t rawIntegerMaximum =
               (int64_t)floor( ( data3DHeader.pointFields.timeMaximum - offset ) / scale + .5 );
            proto.set( "timeStamp", ScaledIntegerNode( imf_, 0, rawIntegerMinimum, rawIntegerMaximum, scale, offset ) );
         }
         else if ( data3DHeader.pointFields.timeScaledInteger == E57_NOT_SCALED_USE_FLOAT )
         {
            if ( data3DHeader.pointFields.timeMaximum == E57_FLOAT_MAX )
            {
               proto.set( "timeStamp", FloatNode( imf_, 0., E57_SINGLE, E57_FLOAT_MIN, E57_FLOAT_MAX ) );
            }
            else if ( data3DHeader.pointFields.timeMaximum == E57_DOUBLE_MAX )
            {
               proto.set( "timeStamp", FloatNode( imf_, 0., E57_DOUBLE, E57_DOUBLE_MIN, E57_DOUBLE_MAX ) );
            }
         }
         else
         {
            proto.set( "timeStamp", IntegerNode( imf_, 0, (int64_t)data3DHeader.pointFields.timeMinimum,
                                                 (int64_t)data3DHeader.pointFields.timeMaximum ) );
         }
      }
 
      if ( data3DHeader.pointFields.cartesianInvalidStateField )
      {
         proto.set( "cartesianInvalidState", IntegerNode( imf_, 0, 0, 2 ) );
      }
      if ( data3DHeader.pointFields.sphericalInvalidStateField )
      {
         proto.set( "sphericalInvalidState", IntegerNode( imf_, 0, 0, 2 ) );
      }
      if ( data3DHeader.pointFields.isIntensityInvalidField )
      {
         proto.set( "isIntensityInvalid", IntegerNode( imf_, 0, 0, 1 ) );
      }
      if ( data3DHeader.pointFields.isColorInvalidField )
      {
         proto.set( "isColorInvalid", IntegerNode( imf_, 0, 0, 1 ) );
      }
      if ( data3DHeader.pointFields.isTimeStampInvalidField )
      {
         proto.set( "isTimeStampInvalid", IntegerNode( imf_, 0, 0, 1 ) );
      }
 
      // E57_EXT_surface_normals
      if ( data3DHeader.pointFields.normalX || data3DHeader.pointFields.normalY || data3DHeader.pointFields.normalZ )
      {
         // make sure we declare the extesion before using the fields with prefix
         ustring norExtUri;
         if ( !imf_.extensionsLookupPrefix( "nor", norExtUri ) )
         {
            imf_.extensionsAdd( "nor", "http://www.libe57.org/E57_NOR_surface_normals.txt" );
         }
      }
 
      // currently we support writing normals only as float32
      if ( data3DHeader.pointFields.normalX )
      {
         proto.set( "nor:normalX", FloatNode( imf_, 0., E57_SINGLE, -1., 1. ) );
      }
      if ( data3DHeader.pointFields.normalY )
      {
         proto.set( "nor:normalY", FloatNode( imf_, 0., E57_SINGLE, -1., 1. ) );
      }
      if ( data3DHeader.pointFields.normalZ )
      {
         proto.set( "nor:normalZ", FloatNode( imf_, 0., E57_SINGLE, -1., 1. ) );
      }
 
      // Make empty codecs vector for use in creating points CompressedVector.
      // If this vector is empty, it is assumed that all fields will use the BitPack codec.
      VectorNode codecs = VectorNode( imf_, true );
 
      // Create CompressedVector for storing points.  Path Name: "/data3D/0/points".
      // We use the prototype and empty codecs tree from above.
      // The CompressedVector will be filled by code below.
      CompressedVectorNode points = CompressedVectorNode( imf_, proto, codecs );
      scan.set( "points", points );
      return pos;
   }
 
   template <typename COORDTYPE>
   CompressedVectorWriter WriterImpl::SetUpData3DPointsData( int64_t dataIndex, size_t count,
                                                             const Data3DPointsData_t<COORDTYPE> &buffers )
   {
      StructureNode scan( data3D_.get( dataIndex ) );
      CompressedVectorNode points( scan.get( "points" ) );
      StructureNode proto( points.prototype() );
 
      std::vector<SourceDestBuffer> sourceBuffers;
      if ( proto.isDefined( "cartesianX" ) && ( buffers.cartesianX != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "cartesianX", buffers.cartesianX, count, true, true );
      }
      if ( proto.isDefined( "cartesianY" ) && ( buffers.cartesianY != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "cartesianY", buffers.cartesianY, count, true, true );
      }
      if ( proto.isDefined( "cartesianZ" ) && ( buffers.cartesianZ != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "cartesianZ", buffers.cartesianZ, count, true, true );
      }
 
      if ( proto.isDefined( "sphericalRange" ) && ( buffers.sphericalRange != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "sphericalRange", buffers.sphericalRange, count, true, true );
      }
      if ( proto.isDefined( "sphericalAzimuth" ) && ( buffers.sphericalAzimuth != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "sphericalAzimuth", buffers.sphericalAzimuth, count, true, true );
      }
      if ( proto.isDefined( "sphericalElevation" ) && ( buffers.sphericalElevation != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "sphericalElevation", buffers.sphericalElevation, count, true, true );
      }
 
      if ( proto.isDefined( "intensity" ) && ( buffers.intensity != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "intensity", buffers.intensity, count, true, true );
      }
 
      if ( proto.isDefined( "colorRed" ) && ( buffers.colorRed != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "colorRed", buffers.colorRed, count, true );
      }
      if ( proto.isDefined( "colorGreen" ) && ( buffers.colorGreen != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "colorGreen", buffers.colorGreen, count, true );
      }
      if ( proto.isDefined( "colorBlue" ) && ( buffers.colorBlue != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "colorBlue", buffers.colorBlue, count, true );
      }
 
      if ( proto.isDefined( "returnIndex" ) && ( buffers.returnIndex != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "returnIndex", buffers.returnIndex, count, true );
      }
      if ( proto.isDefined( "returnCount" ) && ( buffers.returnCount != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "returnCount", buffers.returnCount, count, true );
      }
 
      if ( proto.isDefined( "rowIndex" ) && ( buffers.rowIndex != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "rowIndex", buffers.rowIndex, count, true );
      }
      if ( proto.isDefined( "columnIndex" ) && ( buffers.columnIndex != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "columnIndex", buffers.columnIndex, count, true );
      }
 
      if ( proto.isDefined( "timeStamp" ) && ( buffers.timeStamp != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "timeStamp", buffers.timeStamp, count, true, true );
      }
 
      if ( proto.isDefined( "cartesianInvalidState" ) && ( buffers.cartesianInvalidState != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "cartesianInvalidState", buffers.cartesianInvalidState, count, true );
      }
      if ( proto.isDefined( "sphericalInvalidState" ) && ( buffers.sphericalInvalidState != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "sphericalInvalidState", buffers.sphericalInvalidState, count, true );
      }
      if ( proto.isDefined( "isIntensityInvalid" ) && ( buffers.isIntensityInvalid != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "isIntensityInvalid", buffers.isIntensityInvalid, count, true );
      }
      if ( proto.isDefined( "isColorInvalid" ) && ( buffers.isColorInvalid != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "isColorInvalid", buffers.isColorInvalid, count, true );
      }
      if ( proto.isDefined( "isTimeStampInvalid" ) && ( buffers.isTimeStampInvalid != nullptr ) )
      {
         sourceBuffers.emplace_back( imf_, "isTimeStampInvalid", buffers.isTimeStampInvalid, count, true );
      }
 
      // E57_EXT_surface_normals
      ustring norExtUri;
      if ( imf_.extensionsLookupPrefix( "nor", norExtUri ) )
      {
         if ( proto.isDefined( "nor:normalX" ) && ( buffers.normalX != nullptr ) )
         {
            sourceBuffers.emplace_back( imf_, "nor:normalX", buffers.normalX, count, true, true );
         }
         if ( proto.isDefined( "nor:normalY" ) && ( buffers.normalY != nullptr ) )
         {
            sourceBuffers.emplace_back( imf_, "nor:normalY", buffers.normalY, count, true, true );
         }
         if ( proto.isDefined( "nor:normalZ" ) && ( buffers.normalZ != nullptr ) )
         {
            sourceBuffers.emplace_back( imf_, "nor:normalZ", buffers.normalZ, count, true, true );
         }
      }
 
      // create the writer, all buffers must be setup before this call
      CompressedVectorWriter writer = points.writer( sourceBuffers );
 
      return writer;
   }
 
   // Explicit template instantiation
   template CompressedVectorWriter WriterImpl::SetUpData3DPointsData( int64_t dataIndex, size_t pointCount,
                                                                      const Data3DPointsData_t<float> &buffers );
 
   template CompressedVectorWriter WriterImpl::SetUpData3DPointsData( int64_t dataIndex, size_t pointCount,
                                                                      const Data3DPointsData_t<double> &buffers );
 
   // This funtion writes out the group data
   bool WriterImpl::WriteData3DGroupsData( int64_t dataIndex, int64_t groupCount, int64_t *idElementValue,
                                           int64_t *startPointIndex, int64_t *pointCount )
   {
      if ( ( dataIndex < 0 ) || ( dataIndex >= data3D_.childCount() ) )
      {
         return false;
      }
 
      StructureNode scan( data3D_.get( dataIndex ) );
 
      if ( !scan.isDefined( "pointGroupingSchemes" ) )
      {
         return false;
      }
      StructureNode pointGroupingSchemes( scan.get( "pointGroupingSchemes" ) );
 
      if ( !pointGroupingSchemes.isDefined( "groupingByLine" ) )
      {
         return false;
      }
      StructureNode groupingByLine( pointGroupingSchemes.get( "groupingByLine" ) );
 
      if ( !groupingByLine.isDefined( "groups" ) )
      {
         return false;
      }
      CompressedVectorNode groups( groupingByLine.get( "groups" ) );
 
      std::vector<SourceDestBuffer> groupSDBuffers;
      groupSDBuffers.emplace_back( imf_, "idElementValue", idElementValue, groupCount, true );
      groupSDBuffers.emplace_back( imf_, "startPointIndex", startPointIndex, groupCount, true );
      groupSDBuffers.emplace_back( imf_, "pointCount", pointCount, groupCount, true );
 
      CompressedVectorWriter writer = groups.writer( groupSDBuffers );
      writer.write( groupCount );
      writer.close();
 
      return true;
   }
 
} // end namespace e57