How to find Fdt semantic data

You can access several kind of semantic data for Dtk_Dimension.

• Using Dtk_Text_subtype
• Using Dtk_Info
• Library Use

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Using Dtk_Text_subtype

Each Dtk_Text of Dtk_Dimension has a DTK_Text_subtype.
DTK_Text_subtype lets you flag each text with one or more subtype(s) to semantically define the Dtk_Text.

On this picture, you can see the easiest cases:

• The first Dtk_Dimension is a really basic case:
  The only text provided is '69.76'.
  It is flagged 'Mainvalpart' - because it is a part of the main value part of the dimension -, and 'basisval' - because it is the basisval of this part -.

• The second Dtk_Dimension contains 2 texts : '2.75' and ' " '.
  Each text is a part of main value part, so they are both flagged 'Mainvalpart'.
  The first one is also flagged 'basisval' whereas the other is flagged 'pow'.

• You can see on the third Dtk_Dimension some others subtypes not included into the mainvalpart - Up/Left/Right/Down/Prefix -.

This second picture shows you others DTK_Text_subtype:

• The first Dtk_Dimension is a dual dimension.
  You can see that all texts in the second part of the dual are flagged 'dual'.

• The second Dtk_Dimension is a fraction form.
  The fraction is a part of the mainval, so all the texts are flagged 'Mainvalpart'.
  You have the 'basisval', and the 'fraction' part.
  You still have the 'pow'.

Most complex cases follow on the 2 next pictures:

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Using Dtk_Info

Each Dtk_Text has also a Dtk_Info giving you additionnal information.
You can access it using method Dtk_Info::FindAttribute (see sample below).

• DtkUnit gives the unit (as string) of the displayed value in the Dtk_Text
  UnitType should be one of theses values :
  DTK_UNIT_MM,
  DTK_UNIT_MICRON
  DTK_UNIT_CM
  DTK_UNIT_M
  DTK_UNIT_KM
  DTK_UNIT_INCH
  DTK_UNIT_RADIAN
  DTK_UNIT_DMS
  DTK_UNIT_GRADE
  DMS (degree minuts seconds)
  
• DtkOriginalValue gives the semantic numerical value corresponding to main value of dimension.
  
• DtkOriginalTolMin gives the semantic numerical value corresponding to the minimum tolerance
  
• DtkOriginalTolMax gives the semantic numerical value corresponding to the maximum tolerance
  
• DtkOriginalTolMinSign gives the sign of the minimum tolerance
  
• DtkOriginalTolMaxSign gives the sign of the maximum tolerance
  
• DtkOriginalTolAbsolute gives a boolean to tell if tolerances values are relative to the original value or absolute
  
• DtkOriginalDataUnit gives unit of semantic numerical value as string like DtkUnit
  
• DtkSeparator gives the separator character for number '.' or ','
• DtkDisplayFinalZeros gives a boolean for Final Zero display
• DtkDisplayLeadingZeros gives a boolean for Leading Zero display
• DtkPrecision gives a double for precision to display

Following reader, theses information can also be set on the Dtk_CompositeText.

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Library Use

    //First, consider the Dtk_Dimension
    Dtk_DimensionPtr MyDimension;
 
    //Retrieving the array of texts
    const Dtk_CompositeText& MyCompositeText = MyDimension->GetTexts();
 
    //Retrieving the unit of the Dtk_Dimension texts - every texts -.
    const Dtk_InfoPtr& CompositeTextInfo = MyCompositeText.GetInfo();
    Dtk_Val TmpVal;
    CompositeTextInfo->FindAttribute( "DtkUnit", TmpVal );
    // UnitType should be one of theses values ::
    // "DTK_UNIT_MM", "DTK_UNIT_MICRON", "DTK_UNIT_CM", "DTK_UNIT_M", "DTK_UNIT_KM", "DTK_UNIT_INCH"
    // "DTK_UNIT_RADIAN", "DTK_UNIT_DMS", "DTK_UNIT_GRADE"
    // *DMS = degree minuts seconds
    Dtk_string UnitType = TmpVal.GetString();
 
    //Reading each text :
    Dtk_Size_t NumTexts = MyCompositeText.GetNumTexts();
    for( Dtk_Size_t i = 0; i < NumTexts; ++i )
    {
        //We retrieve the Dtk_Text
        const Dtk_Text& IthText = MyCompositeText[ i ];
 
        //Retrieving the unit of the Dtk_Dimension text.
        const Dtk_InfoPtr& TextInfo = IthText.GetInfo();
        Dtk_Val TmpVal;
        TextInfo->FindAttribute( "DtkUnit", TmpVal );
        // UnitType should be one of theses values ::
        // "DTK_UNIT_MM", "DTK_UNIT_MICRON", "DTK_UNIT_CM", "DTK_UNIT_M", "DTK_UNIT_KM", "DTK_UNIT_INCH"
        // "DTK_UNIT_RADIAN", "DTK_UNIT_DMS", "DTK_UNIT_GRADE"
        // *DMS = degree minuts seconds
        Dtk_string UnitType = TmpVal.GetString();
        
        //Retrieving the Numeric value of the Dtk_Dimension text.
        Dtk_Val val;
        Dtk_ErrorStatus st = inf->FindAttribute("DtkOriginalValue",val);
        if (st==dtkNoError)
        {
           double r = val.GetDouble();   
         }
}
        //Retrieving the subtypes:
        //Here is the new method to read the subtypes by DTK_Text_subtype, to have each Dtk_Text semantic data:
        const DTK_Text_subtype& MyTextSubType = IthText.TextSubType();
 
        //Here, you retrieve a DTK_Text_subtype instance.
        //Using subtype
        if( MyTextSubType.IsTolBloc() )
        {
            // entering into tolerance bloc
            if( MyTextSubType.IsTolUpperTol() )
            {
                //doing some stuff...
            }
        }
    }