Rename confusing rotate method

CURA-12822

Author: wawanbreton

include/geometry/ClosedPolyline.h

@@ -137,8 +137,8 @@ class ClosedPolyline : public Polyline
      */
     [[nodiscard]] OpenPolyline toPseudoOpenPolyline() const;
 
-    /*! Rotates the points of the line so that it will now start at the point with the given index */
-    void rotateToStartPoint(const size_t start_index);
+    /*! Shifts the points of the line so that it will now start at the point with the given index */
+    void shiftVerticesToStartPoint(const size_t start_index);
 };
 
 } // namespace cura

src/LayerPlan.cpp

@@ -952,7 +952,7 @@ void LayerPlan::addInfillPolygonsByOptimizer(
         const size_t start_index = ordered_polygon.start_vertex_;
 
         ClosedPolyline split_polygon(polygon);
-        split_polygon.rotateToStartPoint(start_index);
+        split_polygon.shiftVerticesToStartPoint(start_index);
         remaining_lines.push_back(split_polygon.toPseudoOpenPolyline());
     }
 }

src/geometry/ClosedPolyline.cpp

@@ -55,7 +55,7 @@ OpenPolyline ClosedPolyline::toPseudoOpenPolyline() const
     return open_polyline;
 }
 
-void ClosedPolyline::rotateToStartPoint(const size_t start_index)
+void ClosedPolyline::shiftVerticesToStartPoint(const size_t start_index)
 {
     if (! isValid() || start_index == 0 || start_index >= size())
     {