While most layout options are used to affect how the active layout algorithm computes concrete coordinates for the graph elements, there are some layout options that have a special role.
The option with identifier de.cau.cs.kieler.algorithm specifies which layout algorithm to use for the content of a composite node. The value can be either the identifier of a layout algorithm or the identifier of a layout type. In the latter case the algorithm with highest priority of that type is applied.
For the purpose of automatic diagram layout in eTrice, we use the Layered algorithms which are meant for lay-outing hierarchical diagrams and are best suited for behavior and structure diagrams in eTrice. For the behavior diagrams we have used the Graphviz Dot algorithm whereas for the structure diagrams we have used the KLay Layered algorithm. Though the layout algorithm being used for performing layout can be changed at ones own will, it is recommended to use the defaults.
Diagram types are used to classify graphical diagrams for setting default layout option values for a set of similar diagrams. The diagram type of an element is specified with the layout option de.cau.cs.kieler.diagramType. Thus, these help in
The following diagram types have been defined and used in eTrice:
Note that not all diagrams objects in the behavior and structure diagrams are assigned the last two diagram types. Only the top-level container and the visible bounding box has been assigned these diagram types in respective editors.