ENH: Initial beam arc sequence

Author: Mikhail Polkovnikov

DicomRtImportExport/Logic/vtkSlicerDicomRtReader.cxx

@@ -2706,6 +2706,18 @@ const char* vtkSlicerDicomRtReader::GetBeamTreatmentDeliveryType(unsigned int be
   return beam->TreatmentDeliveryType.c_str();
 }
 
+//----------------------------------------------------------------------------
+bool vtkSlicerDicomRtReader::CheckBeamArcDeliveryType(unsigned int beamNumber,
+  double& initialAngle, double& finalAngle, bool& rotationDirection) const
+{
+  const vtkInternal::BeamEntry* beam=this->Internal->FindBeamByNumber(beamNumber);
+  if (!beam)
+  {
+    return false;
+  }
+  return beam->IsArcDeliverySequence(initialAngle, finalAngle, rotationDirection);
+}
+
 //----------------------------------------------------------------------------
 const char* vtkSlicerDicomRtReader::GetBeamRadiationType(unsigned int beamNumber)
 {

DicomRtImportExport/Logic/vtkSlicerDicomRtReader.h

@@ -94,6 +94,15 @@ class VTK_SLICER_DICOMRTIMPORTEXPORT_LOGIC_EXPORT vtkSlicerDicomRtReader : publi
   /// Get radiation type (primary particle) for a given beam
   const char* GetBeamTreatmentDeliveryType(unsigned int beamNumber);
 
+  /// Check if beam control point sequence is an arc beam delivery
+  /// @param beamNumber - beam number
+  /// @param initialAngle - initial angle of the arc sequence in degrees
+  /// @param finalAngle - final angle of the arc sequence in degrees
+  /// @param rotationDirection - rotation direction of the gantry (0 - clockwise, 1 - counter clockwise)
+  /// @return true if beam control point sequence is arc, false otherwise
+  bool CheckBeamArcDeliveryType(unsigned int beamNumber, double& initialAngle,
+    double& finalAngle, bool& rotationDirection) const;
+
   /// Get radiation type (primary particle) for a given beam
   const char* GetBeamRadiationType(unsigned int beamNumber);