Interactive layout method for object diagrams of OMT

Proposes a new layout method using the magnetic spring model for object diagrams used in the Object Modeling Technique (OMT). In our new method, there are two main characteristics. Firstly, our new method considers the interactive layout. User can use the layout function many times during the drawing of the diagram. The result of the layout is suitable for continuing to draw the diagram smoothly. Secondly, our method can avoid the overlapping of nodes with a new definition of the distance between nodes. We have implemented the new layout method into an object diagram-drawing CASE tool. We compare the results of the new layout method with results of the old layout method. We have made sure that our new layout method is more suitable for the interactive layout than the old layout method was, and that it avoids node overlaps