fix(seg): jump to the first slice in SEG and RT that has data (#4605)

extensions/cornerstone-dicom-rt/src/loadRTStruct.js

@@ -126,6 +126,7 @@ export default async function loadRTStruct(extensionManager, rtStructDisplaySet,
     SeriesInstanceUID: instance.SeriesInstanceUID,
     ROIContours: [],
     visible: true,
+    ReferencedSOPInstanceUIDsSet: new Set(),
   };
 
   for (let i = 0; i < ROIContourSequence.length; i++) {
@@ -142,7 +143,8 @@ export default async function loadRTStruct(extensionManager, rtStructDisplaySet,
 
     const contourPoints = [];
     for (let c = 0; c < ContourSequenceArray.length; c++) {
-      const { ContourData, NumberOfContourPoints, ContourGeometricType } = ContourSequenceArray[c];
+      const { ContourData, NumberOfContourPoints, ContourGeometricType, ContourImageSequence } =
+        ContourSequenceArray[c];
 
       let isSupported = false;
 
@@ -172,6 +174,12 @@ export default async function loadRTStruct(extensionManager, rtStructDisplaySet,
         type: ContourGeometricType,
         isSupported,
       });
+
+      if (ContourImageSequence?.ReferencedSOPInstanceUID) {
+        structureSet.ReferencedSOPInstanceUIDsSet.add(
+          ContourImageSequence?.ReferencedSOPInstanceUID
+        );
+      }
     }
 
     _setROIContourMetadata(

extensions/cornerstone-dicom-rt/src/viewports/OHIFCornerstoneRTViewport.tsx

@@ -6,7 +6,7 @@ import promptHydrateRT from '../utils/promptHydrateRT';
 import _getStatusComponent from './_getStatusComponent';
 
 import createRTToolGroupAndAddTools from '../utils/initRTToolGroup';
-import { SegmentationRepresentations } from '@cornerstonejs/tools/enums';
+import { usePositionPresentationStore } from '@ohif/extension-cornerstone';
 
 const RT_TOOLGROUP_BASE_NAME = 'RTToolGroup';
 
@@ -43,8 +43,8 @@ function OHIFCornerstoneRTViewport(props: withAppTypes) {
   const [viewportGrid, viewportGridService] = useViewportGrid();
 
   // States
-  const [isToolGroupCreated, setToolGroupCreated] = useState(false);
   const [selectedSegment, setSelectedSegment] = useState(1);
+  const { setPositionPresentation } = usePositionPresentationStore();
 
   // Hydration means that the RT is opened and segments are loaded into the
   // segmentation panel, and RT is also rendered on any viewport that is in the
@@ -123,6 +123,7 @@ function OHIFCornerstoneRTViewport(props: withAppTypes) {
           toolGroupId: toolGroupId,
           orientation: viewportOptions.orientation,
           viewportId: viewportOptions.viewportId,
+          presentationIds: viewportOptions.presentationIds,
         }}
         onElementEnabled={evt => {
           props.onElementEnabled?.(evt);
@@ -185,6 +186,19 @@ function OHIFCornerstoneRTViewport(props: withAppTypes) {
           setRtIsLoading(false);
         }
 
+        if (rtDisplaySet?.firstSegmentedSliceImageId && viewportOptions?.presentationIds) {
+          const { firstSegmentedSliceImageId } = rtDisplaySet;
+          const { presentationIds } = viewportOptions;
+
+          setPositionPresentation(presentationIds.positionPresentationId, {
+            viewportType: 'stack',
+            viewReference: {
+              referencedImageId: firstSegmentedSliceImageId,
+            },
+            viewPresentation: {},
+          });
+        }
+
         if (evt.overlappingSegments) {
           uiNotificationService.show({
             title: 'Overlapping Segments',
@@ -247,8 +261,6 @@ function OHIFCornerstoneRTViewport(props: withAppTypes) {
 
     toolGroup = createRTToolGroupAndAddTools(toolGroupService, customizationService, toolGroupId);
 
-    setToolGroupCreated(true);
-
     return () => {
       // remove the segmentation representations if seg displayset changed
       segmentationService.removeSegmentationRepresentations(viewportId);