- * \brief Sets some initial values for the Constructor
- * \warning not end user intended
- */
-void File::SaveInitialValues()
-{
- PixelRead = -1; // no ImageData read yet.
- LastAllocatedPixelDataLength = 0;
- Pixel_Data = 0;
-
- InitialSpp = "";
- InitialPhotInt = "";
- InitialPlanConfig = "";
- InitialBitsAllocated = "";
- InitialHighBit = "";
-
- InitialRedLUTDescr = 0;
- InitialGreenLUTDescr = 0;
- InitialBlueLUTDescr = 0;
- InitialRedLUTData = 0;
- InitialGreenLUTData = 0;
- InitialBlueLUTData = 0;
-
- if ( HeaderInternal->IsReadable() )
- {
- // the following values *may* be modified
- // by File::GetImageDataIntoVectorRaw
- // we save their initial value.
- InitialSpp = HeaderInternal->GetEntryByNumber(0x0028,0x0002);
- InitialPhotInt = HeaderInternal->GetEntryByNumber(0x0028,0x0004);
- InitialPlanConfig = HeaderInternal->GetEntryByNumber(0x0028,0x0006);
-
- InitialBitsAllocated = HeaderInternal->GetEntryByNumber(0x0028,0x0100);
- InitialHighBit = HeaderInternal->GetEntryByNumber(0x0028,0x0102);
-
- // the following entries *may* be removed from the H table
- // (NOT deleted ...) by File::GetImageDataIntoVectorRaw
- // we keep a pointer on them.
- InitialRedLUTDescr = HeaderInternal->GetDocEntryByNumber(0x0028,0x1101);
- InitialGreenLUTDescr = HeaderInternal->GetDocEntryByNumber(0x0028,0x1102);
- InitialBlueLUTDescr = HeaderInternal->GetDocEntryByNumber(0x0028,0x1103);
-
- InitialRedLUTData = HeaderInternal->GetDocEntryByNumber(0x0028,0x1201);
- InitialGreenLUTData = HeaderInternal->GetDocEntryByNumber(0x0028,0x1202);
- InitialBlueLUTData = HeaderInternal->GetDocEntryByNumber(0x0028,0x1203);
- }
-}
-
-/**
- * \brief restores some initial values
- * \warning not end user intended
- */
-void File::RestoreInitialValues()
-{
- if ( HeaderInternal->IsReadable() )
- {
- // the following values *may* have been modified
- // by File::GetImageDataIntoVectorRaw
- // we restore their initial value.
- if ( InitialSpp != "")
- HeaderInternal->SetEntryByNumber(InitialSpp,0x0028,0x0002);
- if ( InitialPhotInt != "")
- HeaderInternal->SetEntryByNumber(InitialPhotInt,0x0028,0x0004);
- if ( InitialPlanConfig != "")
-
- HeaderInternal->SetEntryByNumber(InitialPlanConfig,0x0028,0x0006);
- if ( InitialBitsAllocated != "")
- HeaderInternal->SetEntryByNumber(InitialBitsAllocated,0x0028,0x0100);
- if ( InitialHighBit != "")
- HeaderInternal->SetEntryByNumber(InitialHighBit,0x0028,0x0102);
-
- // the following entries *may* be have been removed from the H table
- // (NOT deleted ...) by File::GetImageDataIntoVectorRaw
- // we restore them.
-
- if (InitialRedLUTDescr)
- HeaderInternal->AddEntry(InitialRedLUTDescr);
- if (InitialGreenLUTDescr)
- HeaderInternal->AddEntry(InitialGreenLUTDescr);
- if (InitialBlueLUTDescr)
- HeaderInternal->AddEntry(InitialBlueLUTDescr);
-
- if (InitialRedLUTData)
- HeaderInternal->AddEntry(InitialBlueLUTDescr);
- if (InitialGreenLUTData)
- HeaderInternal->AddEntry(InitialGreenLUTData);
- if (InitialBlueLUTData)
- HeaderInternal->AddEntry(InitialBlueLUTData);
- }
-}
-
-/**
- * \brief delete initial values (il they were saved)
- * of InitialLutDescriptors and InitialLutData
- */
-void File::DeleteInitialValues()
-{
-// InitialLutDescriptors and InitialLutData
-// will have to be deleted if the don't belong any longer
-// to the Header H table when the header is deleted...
-
-// FIXME
-// We don't know if the InitialLutData are still in the header or not !
-/* if ( InitialRedLUTDescr )
- delete InitialRedLUTDescr;
-
- if ( InitialGreenLUTDescr )
- delete InitialGreenLUTDescr;
-
- if ( InitialBlueLUTDescr )
- delete InitialBlueLUTDescr;
-
- if ( InitialRedLUTData )
- delete InitialRedLUTData;
-
- if ( InitialGreenLUTData )
- delete InitialGreenLUTData;
-
- if ( InitialBlueLUTData )
- delete InitialBlueLUTData;*/
+ * \brief gets the info from 0028,0030 : Pixel Spacing
+ * else 1.0
+ * @return X dimension of a pixel
+ */
+float File::GetXSpacing()
+{
+ float xspacing = 1.0;
+ float yspacing = 1.0;
+ const std::string &strSpacing = GetEntryValue(0x0028,0x0030);
+
+ if( strSpacing == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro( "Unfound Pixel Spacing (0028,0030)" );
+ return 1.;
+ }
+
+ int nbValues;
+ if( ( nbValues = sscanf( strSpacing.c_str(),
+ "%f\\%f", &yspacing, &xspacing)) != 2 )
+ {
+ // if no values, xspacing is set to 1.0
+ if( nbValues == 0 )
+ xspacing = 1.0;
+ // if single value is found, xspacing is defaulted to yspacing
+ if( nbValues == 1 )
+ xspacing = yspacing;
+
+ if ( xspacing == 0.0 )
+ xspacing = 1.0;
+
+ return xspacing;
+
+ }
+
+ // to avoid troubles with David Clunie's-like images
+ if ( xspacing == 0. && yspacing == 0.)
+ return 1.;
+
+ if ( xspacing == 0.)
+ {
+ gdcmWarningMacro("gdcmData/CT-MONO2-8-abdo.dcm-like problem");
+ // seems to be a bug in the header ...
+ nbValues = sscanf( strSpacing.c_str(), "%f\\0\\%f", &yspacing, &xspacing);
+ gdcmAssertMacro( nbValues == 2 );
+ }
+
+ return xspacing;