feat: visualize overlapping segments in cornerstone (#2185)

* feat: visualize overlapping segments

load multiple labelMaps (splitted by dcmjs because overlapping) in a segmentations [IDC2164]

Dynamically update active labelmap [IDC2164]

Co-authored-by: Davide Punzo <punzodavide@hotmail.it>
Co-authored-by: Igor Octaviano <igoroctaviano@gmail.com>

extensions/dicom-segmentation/src/components/SegmentationPanel/SegmentationPanel.js

@@ -159,12 +159,12 @@ const SegmentationPanel = ({
         const labelmapList = getLabelmapList(
           brushStackState,
           firstImageId,
-          activeViewport
+          activeViewport,
         );
         const segmentList = getSegmentList(
           labelmap3D,
           firstImageId,
-          brushStackState
+          brushStackState,
         );
         setState(state => ({
           ...state,
@@ -292,10 +292,13 @@ const SegmentationPanel = ({
 
         const sameSegment = state.selectedSegment === segmentNumber;
         const setCurrentSelectedSegment = () => {
+          const activeViewport = viewports[activeIndex];
+
           _setActiveSegment(
             firstImageId,
             segmentNumber,
-            labelmap3D.activeSegmentIndex
+            labelmap3D.activeSegmentIndex,
+            activeViewport
           );
           updateState('selectedSegment', sameSegment ? null : segmentNumber);
 
@@ -640,7 +643,7 @@ const _getReferencedSegDisplaysets = (StudyInstanceUID, SeriesInstanceUID) => {
  * @param {*} activeSegmentIndex
  * @returns
  */
-const _setActiveSegment = (firstImageId, segmentIndex, activeSegmentIndex) => {
+const _setActiveSegment = (firstImageId, segmentIndex, activeSegmentIndex, activeViewport) => {
   if (segmentIndex === activeSegmentIndex) {
     log.info(`${activeSegmentIndex} is already the active segment`);
     return;
@@ -653,8 +656,27 @@ const _setActiveSegment = (firstImageId, segmentIndex, activeSegmentIndex) => {
     brushStackState.labelmaps3D[brushStackState.activeLabelmapIndex];
   labelmap3D.activeSegmentIndex = segmentIndex;
 
-  refreshViewports();
+  /**
+   * Activates the correct label map if clicked segment
+   * does not belong to the active labelmap
+   */
+  const { StudyInstanceUID } = activeViewport;
+  const studyMetadata = studyMetadataManager.get(StudyInstanceUID);
+  const allDisplaySets = studyMetadata.getDisplaySets();
+  let newLabelmapIndex = brushStackState.activeLabelmapIndex;
+  allDisplaySets.forEach(displaySet => {
+    if (displaySet.labelmapSegments) {
+      Object.keys(displaySet.labelmapSegments).forEach(labelmapIndex => {
+        if (displaySet.labelmapSegments[labelmapIndex].includes(segmentIndex)) {
+          newLabelmapIndex = labelmapIndex;
+        }
+      });
+    }
+  });
 
+  brushStackState.activeLabelmapIndex = newLabelmapIndex;
+
+  refreshViewports();
   return segmentIndex;
 };