GetTextObjectCount Method

Summary

Retrieves the number of text annotation objects in the specified "Graphic Annotation Sequence" (0070,0001) item.

Syntax

C++/CLI

public int GetTextObjectCount( 
   DicomElement graphicAnnSQItem 
)

public: 
int GetTextObjectCount(  
   DicomElement^ graphicAnnSQItem 
)

Parameters

graphicAnnSQItem
An item element under the "Graphic Annotation Sequence" (0070,0001) in the "Graphic Annotation Module".

Return Value

The text annotation object count.

Remarks

This method returns the number of text annotation objects in the specified "Graphic Annotation Sequence" (0070,0001) item in the "Graphic Annotation Module".

Example

using Leadtools; 
using Leadtools.Dicom; 
 
 
public void GraphicAnnSequenceSample() 
{ 
   //Make sure to initialize the DICOM engine, this needs to be done only once  
   //In the whole application 
   DicomEngine.Startup(); 
   using (DicomDataSet dicomDataset = new DicomDataSet()) 
   { 
      // We can also initialize in here the "Grayscale Softcopy Presentation State" class 
      dicomDataset.Initialize(DicomClassType.Undefined, DicomDataSetInitializeType.ExplicitVRLittleEndian); 
 
      dicomDataset.CreateGraphicAnnSQItem(0, "Layer0"); 
      DicomElement firstGraphicAnnSQItem = dicomDataset.FindFirstGraphicAnnSQItem(); 
      Debug.Assert(firstGraphicAnnSQItem != null); 
      //If there was more than one item we can use  
      //FindNextGraphicAnnSQItem to enumerate these items 
 
      dicomDataset.SetLayerName(firstGraphicAnnSQItem, "Layer1"); 
      Debug.Assert(dicomDataset.GetLayerName(firstGraphicAnnSQItem) == "Layer1"); 
 
      // We can also call RemoveAllImageRefFromAllLayers or call  
      // RemoveImageRefFromLayer to remove the referenced images one by one. 
      // In any case this is for demonstration purposes only, since the dataset 
      // doesn't have any referenced images right now. 
      dicomDataset.RemoveAllImageReferencesFromLayer(firstGraphicAnnSQItem); 
 
      dicomDataset.AddPresentationStateImageReference(Path.Combine(LEAD_VARS.ImagesDir, "DICOM", "image2.dcm"), null, 0); 
      // We know that the SOP instance UID for the dataset IMAGE2.dcm is 
      // 1.2.840.114257.3.6.5.5.18900282 
      dicomDataset.AddLayerImageReference(firstGraphicAnnSQItem, "1.2.840.114257.3.6.5.5.18900282"); 
      Debug.Assert(dicomDataset.GetLayerImageReferenceCount(firstGraphicAnnSQItem) == 1); 
      Debug.Assert(dicomDataset.GetLayerImageReferenceSOPInstance(firstGraphicAnnSQItem, 0) == "1.2.840.114257.3.6.5.5.18900282"); 
      Debug.Assert(dicomDataset.GetLayerImageReferenceElement(firstGraphicAnnSQItem, "1.2.840.114257.3.6.5.5.18900282") != null); 
 
      ////////This section is for DICOM Graphic Object/////////////////// 
 
      DicomGraphicObject graphicObject = new DicomGraphicObject(); 
      DicomAnnotationPoint[] annotationPoints = new DicomAnnotationPoint[5]; 
      annotationPoints[0].X = 480.00F; 
      annotationPoints[0].Y = 226.00F; 
      annotationPoints[1].X = 480.00F; 
      annotationPoints[1].Y = 418.00F; 
      annotationPoints[2].X = 488.00F; 
      annotationPoints[2].Y = 418.00F; 
      annotationPoints[3].X = 488.00F; 
      annotationPoints[3].Y = 226.00F; 
      annotationPoints[4].X = 480.00F; 
      annotationPoints[4].Y = 226.00F; 
      graphicObject.SetAnnotationPoints(annotationPoints, 5); 
      graphicObject.Filled = false; 
      graphicObject.Type = DicomAnnotationType.Polyline; 
      graphicObject.LayerName = "Layer1"; 
      graphicObject.Units = DicomAnnotationUnitsRelativityType.Pixel; 
      Debug.Assert(graphicObject.AnnotationPointCount == 5); 
 
      //Start Clean! 
      //Can also call RemoveGraphicObject to remove individual objects 
      dicomDataset.RemoveAllGraphicObjects(firstGraphicAnnSQItem); 
 
      dicomDataset.CreateGraphicObject(firstGraphicAnnSQItem, graphicObject, false); 
      Debug.Assert(dicomDataset.GetGraphicObjectCount(firstGraphicAnnSQItem) == 1); 
      Debug.Assert(dicomDataset.GetGraphicObjElement(firstGraphicAnnSQItem, 0) != null); 
      Debug.Assert(dicomDataset.GetGraphicObjPointCount(firstGraphicAnnSQItem, 0) == 5); 
 
      DicomGraphicObject graphicObject1 = dicomDataset.GetGraphicObjectInformation(firstGraphicAnnSQItem, 0); 
      Debug.Assert(graphicObject1 != null); 
      graphicObject1.Filled = true; 
      dicomDataset.SetGraphicObjectInformation(firstGraphicAnnSQItem, 0, graphicObject1); 
 
 
      ////////This section is for DICOM Text Object/////////////////// 
      //Can also call RemoveTextObject to remove individual objects 
      dicomDataset.RemoveAllTextObjects(firstGraphicAnnSQItem); 
 
      DicomTextObject textObject = new DicomTextObject(); 
      textObject.AnchorPointVisible = true; 
      textObject.AnchorPoint = new DicomAnnotationPoint(1.1F, 1.1F); 
      textObject.BRHCorner = new DicomAnnotationPoint(521.251343F, 328.190216F); 
      textObject.TLHCorner = new DicomAnnotationPoint(466.642242F, 300.443268F); 
      textObject.TextValue = "Text Value 1"; 
      textObject.AnchorPointUnits = DicomAnnotationUnitsRelativityType.Pixel; 
      textObject.BoundingBoxUnits = DicomAnnotationUnitsRelativityType.Pixel; 
      textObject.LayerName = "Layer1"; 
      textObject.TextJustification = TextAnnotationJustificationType.Left; 
 
      dicomDataset.CreateTextObject(firstGraphicAnnSQItem, textObject, false); 
      Debug.Assert(dicomDataset.GetTextObjectCount(firstGraphicAnnSQItem) == 1); 
      Debug.Assert(dicomDataset.GetTextObjElement(firstGraphicAnnSQItem, 0) != null); 
 
      DicomTextObject textObject1 = dicomDataset.GetTextObjectInformation(firstGraphicAnnSQItem, 0); 
      Debug.Assert(textObject1 != null); 
      textObject1.TextJustification = TextAnnotationJustificationType.Right; 
      dicomDataset.SetTextObjectInformation(firstGraphicAnnSQItem, 0, textObject1); 
 
 
      dicomDataset.Save(Path.Combine(LEAD_VARS.ImagesDir, "DICOM", "GraphicAnnSequence.dcm"), DicomDataSetSaveFlags.None); 
   } 
   DicomEngine.Shutdown(); 
} 
 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}