Mesh tab: modification of the mesh layout to better integrate it into the modeling process

src/View/Geometry/Window.py

@@ -314,6 +314,10 @@ class GeometryWindow(PamhyrWindow):
                 trad=self._trad,
                 parent=self
             )
+            dlg.adjustSize()
+            dialog_geometry = dlg.frameGeometry()
+            dialog_geometry.moveCenter(self.frameGeometry().center())
+            dlg.move(dialog_geometry.topLeft())
             if dlg.exec():
                 data = {
                     "step": dlg.space_step,