- The parts of an opening able to turn around the hinge numbered x should be prefixed by sweethome3d_opening_on_hinge_ followed by the same number x. For example, sweethome3d_opening_on_hinge_1_door and sweethome3d_opening_on_hinge_1_handle will rotate around the axis defined by sweethome3d_hinge_1, or defined by sweethome3d_hinge_1_top and sweethome3d_hinge_1_bottom. If you want to define transparent panes directly without a transparent material, you can also use the prefix sweethome3d_window_pane_on_hinge_ followed by the hinge number. The axis direction of the hinge x is guessed from the largest dimension of the global bounding box of the hinge parts. Thus, if the largest dimension of a hinge is its height, the axis will be vertical, if its largest dimension is its depth the axis will be horizontal in Y direction and if its largest dimension is its width the axis will be also horizontal but in X direction. Axes can only be parallel to X, Y or Z axes at the moment, but this looks largely enough. The axis may be defined with some dummy parts that are not visible (like in the kitchen cabinet).