Link a layer or a list of layers to other objects.
Hierarchy
Layers can be linked to objects above or below, in the Gamgi hierarchy.
Pressing the button
Below (the default), the class menu shows
the classes of objects that can be owned by layers. Pressing the button
Above, the same menu shows
Window, the only class of
objects that can own layers.
Gamgi expects users to identify first the layer or list of layers to link.
When the
Layer entry is active and empty, clicking the mouse over
the window graphic area creates a menu with all the window layers (local
selection), which can then be selected. The current layer is initially
proposed in the
Layer entry. Pressing the
List button,
the current list of layers is selected instead.
Gamgi is now expecting users to click on a object of the class
currently selected in the class menu. This object can be in
a different layer or window (global selection). To select
a visible object, just press the mouse over the object,
in its window. To select objects without visual representation,
such as windows and lights, press the mouse over a window
graphic area, to create a menu with all the objects of that
class, which can then be selected.
Method
Gamgi suppports only one method to link layers:
Object.
The
Object method links a layer or a list of layers
to a single object,
Above or
Below.
When linking a layer and the
Hierarchy is
Above, the layer
is unlinked from its current window and linked to the new one.
The layer history kept by the
Undo and
Save
mechanisms is preserved in this operation.
When the
Hierarchy is
Below, the child object is
unlinked from its current parent and linked to the layer. An error
is issued when the parent already owned the child object.
After the linking operation, Gamgi always puts on top
the window and layer containing the linked objects.
When linking a list of layers
Above, all layers in the list
are unlinked and linked to the parent window. When linking a list
of layers
Below, the child object is replicated as many times
as necessary to link each layer in the list to a different replica.