Drawing graphs are in many cases used to show connections between a point of origin and destination. This special graph will show the beginning and end, but also the many in between stops that the object will make in order to make its final connection. So in all simplicity, one could call this graph a map of the objects travel from start to finish. Many explanations can be made very visible with the aid of drawing graphs. This will be a turn around in your very complex lecture about your object.We find many different and complex uses for this exiting way of graphing, but always keep in mind that a 3 dimension presentation is almost a must. The trick is to keep this 3 dimensional presentation simple and spaced out so that the connecting points will always be visible to you and your "students". This will increase the simplicity that you are looking for. Furthermore one should always keep in mind that when explaining these drawing graphs, the key phrase will always have to be to take it slow.
That is why using a 3 dimensional presentation and spacing the points of travel will always need to be clear. You can achieve this by using the 3D software rendering engine of your program to make sure that you can show multiple angle's of this one point. As a result, drawing graphs will clarify your presentation. Furthermore, always make sure to build in reference points to fall back on when a question is asked. A good way to do this would be to look at them as a PowerPoint presentation. You will find it very important to be able to use a slide function to refer back to in your already complex presentation.