[ui] ImageGallery: Use commands to set SfM attributes through the gal…

…lery

Prior to this commit, the `StructureFromMotion` and `SfMTransform` nodes'
were directly set without using the dedicated command. This meant that
the actions to set those attributes through the Image Gallery menu were
not added to the stack of commands, and could not be undone.

meshroom/ui/qml/ImageGallery/ImageDelegate.qml

@@ -82,7 +82,7 @@ Item {
                 text: "Define As Center Image"
                 property var activeNode: _reconstruction ? _reconstruction.activeNodes.get("SfMTransform").node : null
                 enabled: !root.readOnly && _viewpoint.viewId != -1 && _reconstruction && activeNode
-                onClicked: activeNode.attribute("transformation").value = _viewpoint.viewId.toString()
+                onClicked: _reconstruction.setAttribute(activeNode.attribute("transformation"), _viewpoint.viewId.toString())
             }
             Menu {
                 id: sfmSetPairMenu
@@ -92,12 +92,12 @@ Item {
 
                 MenuItem {
                     text: "A"
-                    onClicked: sfmSetPairMenu.activeNode.attribute("initialPairA").value = _viewpoint.viewId.toString()
+                    onClicked: _reconstruction.setAttribute(sfmSetPairMenu.activeNode.attribute("initialPairA"), _viewpoint.viewId.toString())
                 }
 
                 MenuItem {
                     text: "B"
-                    onClicked: sfmSetPairMenu.activeNode.attribute("initialPairB").value = _viewpoint.viewId.toString()
+                    onClicked: _reconstruction.setAttribute(sfmSetPairMenu.activeNode.attribute("initialPairB"), _viewpoint.viewId.toString())
                 }
             }
         }