feat: reset zoom & pan before rotate & flip

src/src/Rendering/Viewer/DICOMImageViewer.cxx

@@ -426,7 +426,7 @@ int DICOMImageViewer::GetSliceMax() {
 }
 
 int DICOMImageViewer::GetSlice() {
-    return this->ImageMapper->GetSliceNumber();
+    return Slice;
 }
 
 void DICOMImageViewer::SetSlice(int slice) {

src/src/UI/Widget/ImageView/dicomimageview.cpp

@@ -24,7 +24,7 @@ DicomImageView::DicomImageView(QWidget *parent)
           mSeries(nullptr), mScrollBar(new ClickableScrollBar(Qt::Orientation::Vertical, this)),
           mTitleBar(createMyTitleBar()), mGLWidget(new QVTKOpenGLNativeWidget), mVcrToolbar(nullptr), mVcrController(nullptr),
           mOverlayView(nullptr), mBaseView(nullptr), mIsCine(false), mIsNegative(false),
-          mIsOverlay(false), mIsSlotInited(false)
+          mIsOverlay(false), mIsSlotInited(false),mCurrentRAngle(0)
 {
     //main container
     QFrame *wrapper = new QFrame(this);
@@ -610,6 +610,7 @@ void DicomImageView::hFlipImage() {
         int slice = mImageViewer->GetSlice();
         //HFlip
         //mImageViewer->GetRenderer()->GetActiveCamera()->SetViewUp(0, 1, 0);
+        resetPanZoom();
         mImageViewer->GetRenderer()->GetActiveCamera()->Azimuth(180);
         FlipExportHelper::toggleFlip();
         //to avoid black out problem during slicing
@@ -627,6 +628,7 @@ void DicomImageView::vFlipImage() {
         //double scale = mImageViewer->GetRenderer()->GetActiveCamera()->GetParallelScale();
 
         int slice = mImageViewer->GetSlice();
+        resetPanZoom();
         //Method 2: Order matters
         mImageViewer->GetRenderer()->GetActiveCamera()->Elevation(-180);
         mImageViewer->GetRenderer()->GetActiveCamera()->Roll(180);
@@ -646,7 +648,9 @@ void DicomImageView::vFlipImage() {
 void DicomImageView::rotateImage(double angle, TransFormType operation) {
     if (hasSeries()) {
         int slice = mImageViewer->GetSlice();
-        mImageViewer->GetRenderer()->GetActiveCamera()->Roll(angle);
+        resetPanZoom();
+        mImageViewer->GetRenderer()->GetActiveCamera()->Roll(mCurrentRAngle + angle);
+        mCurrentRAngle=mCurrentRAngle+angle;
         //to avoid black out problem during slicing
         //slcing is related with rotation, you have to recalculate to get it right
         mImageViewer->GetRenderer()->ResetCameraClippingRange();

src/src/UI/Widget/ImageView/dicomimageview.h

@@ -346,6 +346,8 @@ private:
     bool mIsFirstRenderAfterLoad;
     bool mfirstShowFlag = true;
 
+    int mCurrentRAngle;
+
     uint mViewID;
 
     void initImageViewer();