From affc49049eb919587ed0b2f0ae0833291ddb4855 Mon Sep 17 00:00:00 2001
From: Rexbas <Rexbas@proton.me>
Date: Fri, 24 Nov 2023 22:43:48 +0100
Subject: [PATCH 1/2] Gui: Update rotation center indicator after zoom

---
 src/Gui/NavigationStyle.cpp      |  6 ++++++
 src/Gui/View3DInventorViewer.cpp | 15 +++++++++++++++
 src/Gui/View3DInventorViewer.h   |  1 +
 3 files changed, 22 insertions(+)

diff --git a/src/Gui/NavigationStyle.cpp b/src/Gui/NavigationStyle.cpp
index 0d03e51d29..166251a852 100644
--- a/src/Gui/NavigationStyle.cpp
+++ b/src/Gui/NavigationStyle.cpp
@@ -739,6 +739,12 @@ void NavigationStyle::doZoom(SoCamera* camera, float logfactor, const SbVec2f& p
         SbViewVolume vv = camera->getViewVolume(vp.getViewportAspectRatio());
         SbPlane panplane = vv.getPlane(camera->focalDistance.getValue());
         panCamera(viewer->getSoRenderManager()->getCamera(), ratio, panplane, pos, SbVec2f(0.5,0.5));
+
+        // Change the position of the rotation center indicator after zooming at cursor
+        // Rotation mode is WindowCenter
+        if (!rotationCenterMode) {
+            viewer->changeRotationCenterPosition(getFocalPoint());
+        }
     }
 }
 
diff --git a/src/Gui/View3DInventorViewer.cpp b/src/Gui/View3DInventorViewer.cpp
index fc4ff34ad1..734a4f51fe 100644
--- a/src/Gui/View3DInventorViewer.cpp
+++ b/src/Gui/View3DInventorViewer.cpp
@@ -1407,6 +1407,7 @@ void View3DInventorViewer::showRotationCenter(bool show)
             material->transparency = 1.0F - float(color.alphaF());
 
             auto translation = new SoTranslation();
+            translation->setName("translation");
             translation->translation.setValue(center);
 
             auto annotation = new SoAnnotation();
@@ -1433,6 +1434,20 @@ void View3DInventorViewer::showRotationCenter(bool show)
     }
 }
 
+// Changes the position of the rotation center indicator
+void View3DInventorViewer::changeRotationCenterPosition(const SbVec3f& newCenter) {
+    if (!rotationCenterGroup) {
+        return;
+    }
+
+    SoTranslation* translation = dynamic_cast<SoTranslation*>(rotationCenterGroup->getByName("translation"));
+    if (!translation) {
+        return;
+    }
+
+    translation->translation = newCenter;
+}
+
 void View3DInventorViewer::setNavigationType(Base::Type type)
 {
     if (this->navigation && this->navigation->getTypeId() == type) {
diff --git a/src/Gui/View3DInventorViewer.h b/src/Gui/View3DInventorViewer.h
index cb00008924..5d30e65523 100644
--- a/src/Gui/View3DInventorViewer.h
+++ b/src/Gui/View3DInventorViewer.h
@@ -416,6 +416,7 @@ public:
     bool hasAxisCross();
 
     void showRotationCenter(bool show);
+    void changeRotationCenterPosition(const SbVec3f& newCenter);
 
     void setEnabledFPSCounter(bool on);
     void setEnabledNaviCube(bool on);

From 21f10dd36b6c7b37d7bafac5d5a152978b386697 Mon Sep 17 00:00:00 2001
From: Rexbas <Rexbas@proton.me>
Date: Sat, 25 Nov 2023 09:40:49 +0100
Subject: [PATCH 2/2] Gui: Find scene bounding sphere after zoom

---
 src/Gui/NavigationStyle.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Gui/NavigationStyle.cpp b/src/Gui/NavigationStyle.cpp
index 166251a852..9618b78fa7 100644
--- a/src/Gui/NavigationStyle.cpp
+++ b/src/Gui/NavigationStyle.cpp
@@ -744,6 +744,7 @@ void NavigationStyle::doZoom(SoCamera* camera, float logfactor, const SbVec2f& p
         // Rotation mode is WindowCenter
         if (!rotationCenterMode) {
             viewer->changeRotationCenterPosition(getFocalPoint());
+            findBoundingSphere();
         }
     }
 }