Gui: Revert breaking Python interface change for viewPosition()

src/Gui/View3DInventorViewer.cpp

@@ -2788,7 +2788,7 @@ void View3DInventorViewer::setCameraType(SoType t)
     }
 }
 
-void View3DInventorViewer::moveCameraTo(const SbRotation& orientation, const SbVec3f& position)
+void View3DInventorViewer::moveCameraTo(const SbRotation& orientation, const SbVec3f& position, int duration)
 {
     SoCamera* camera = getCamera();
     if (!camera)
@@ -2796,7 +2796,7 @@ void View3DInventorViewer::moveCameraTo(const SbRotation& orientation, const SbV
 
     if (isAnimationEnabled()) {
         startAnimation(
-            orientation, camera->position.getValue(), position - camera->position.getValue(), true);
+            orientation, camera->position.getValue(), position - camera->position.getValue(), duration, true);
     }
 
     camera->orientation.setValue(orientation);
@@ -3088,16 +3088,24 @@ SbBool View3DInventorViewer::isAnimating() const
  * @param orientation The new orientation
  * @param rotationCenter The rotation center
  * @param translation An additional translation on top of the translation caused by the rotation around the rotation center
+ * @param duration The duration in milliseconds
+ * @param wait When false, start the animation and continue (asynchronous). When true, start the animation and wait for the animation to finish (synchronous)
  */
 void View3DInventorViewer::startAnimation(const SbRotation& orientation,
-                                          const SbVec3f& rotationCenter, const SbVec3f& translation, bool wait)
+                                          const SbVec3f& rotationCenter,
+                                          const SbVec3f& translation,
+                                          int duration,
+                                          bool wait)
 {
     // Currently starts a FixedTimeAnimation. If there is going to be an additional animation like
     // FixedVelocityAnimation, check the animation type from a parameter and start the right animation
 
-    int duration = App::GetApplication()
+    // Duration was not set or is invalid so use the AnimationDuration parameter as default
+    if (duration < 0) {
+        duration = App::GetApplication()
                        .GetParameterGroupByPath("User parameter:BaseApp/Preferences/View")
                        ->GetInt("AnimationDuration", 250);
+    }
 
     auto animation = std::make_shared<FixedTimeAnimation>(
         navigation, orientation, rotationCenter, translation, duration);

src/Gui/View3DInventorViewer.h

@@ -165,7 +165,7 @@ public:
     SbBool isPopupMenuEnabled() const;
 
     void startAnimation(const SbRotation& orientation, const SbVec3f& rotationCenter,
-                        const SbVec3f& translation, bool wait = false);
+                        const SbVec3f& translation, int duration = -1, bool wait = false);
     void startSpinningAnimation(const SbVec3f& axis, float velocity);
     void stopAnimating();
     SbBool isAnimating() const;
@@ -377,7 +377,7 @@ public:
      */
     void setCameraOrientation(const SbRotation& orientation, SbBool moveToCenter = false);
     void setCameraType(SoType t) override;
-    void moveCameraTo(const SbRotation& orientation, const SbVec3f& position);
+    void moveCameraTo(const SbRotation& orientation, const SbVec3f& position, int duration = -1);
     /**
      * Zooms the viewport to the size of the bounding box.
      */

src/Gui/View3DPy.cpp

@@ -778,7 +778,9 @@ Py::Object View3DInventorPy::getCameraOrientation()
 Py::Object View3DInventorPy::viewPosition(const Py::Tuple& args)
 {
     PyObject* p = nullptr;
-    if (!PyArg_ParseTuple(args.ptr(), "|O!", &Base::PlacementPy::Type, &p))
+    int steps; // Unused but kept as parameter to not break the Python interface
+    int duration = -1; // Duration in ms, will be replaced with User parameter:BaseApp/Preferences/View/AnimationDuration when not explicitly provided
+    if (!PyArg_ParseTuple(args.ptr(), "|O!ii", &Base::PlacementPy::Type, &p, &steps, &duration))
         throw Py::Exception();
 
     if (p) {
@@ -789,7 +791,7 @@ Py::Object View3DInventorPy::viewPosition(const Py::Tuple& args)
         rot.getValue(q0,q1,q2,q3);
         getView3DIventorPtr()->getViewer()->moveCameraTo(
             SbRotation((float)q0, (float)q1, (float)q2, (float)q3),
-            SbVec3f((float)pos.x, (float)pos.y, (float)pos.z));
+            SbVec3f((float)pos.x, (float)pos.y, (float)pos.z), duration);
     }
 
     SoCamera* cam = getView3DIventorPtr()->getViewer()->getSoRenderManager()->getCamera();