contourSegmentation removeContourSegmentationAnnotation.ts

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  import { getSegmentation } from '../../stateManagement/segmentation/getSegmentation';
import type { ContourSegmentationAnnotation } from '../../types';
 
/**
 * Removes a contour segmentation annotation from the given annotation.
 * If the annotation does not have a segmentation data, this method returns
 * quietly.  This can occur for interpolated segmentations that have not yet
 * been converted to real segmentations or other in-process segmentations.
 * @param annotation - The contour segmentation annotation to remove.
 */
export function removeContourSegmentationAnnotation(
  annotation: ContourSegmentationAnnotation
) {
  if (!annotation.data.segmentation) {
    throw new Error(
      'removeContourSegmentationAnnotation: annotation does not have a segmentation data'
    );
  }
 
  const { segmentationId, segmentIndex } = annotation.data.segmentation;
  const segmentation = getSegmentation(segmentationId);
  const { annotationUIDsMap } = segmentation?.representationData.Contour || {};
  const annotationsUIDsSet = annotationUIDsMap?.get(segmentIndex);
 
  if (!annotationsUIDsSet) {
    return;
  }
 
  annotationsUIDsSet.delete(annotation.annotationUID);
 
  // Delete segmentIndex Set if there is no more annotations
  if (!annotationsUIDsSet.size) {
    annotationUIDsMap.delete(segmentIndex);
  }
}