Attachment of lines to objects in interactive draw graphics

DETAILED DESCRIPTION It is therefore an object of this invention to provide a technique for an interactive computer graphic application wherein lines which are attached to an object move with the object.
It is another object of the invention to provide a means for the user of an interactive computer graphic application to attach lines to objects such that when the objects move, the lines will rubber-band and follow the object.
According to the invention, objects are given an attribute that will describe their "stickiness".
When the user selects an object and then selects a DESCRIBE action, s/he is given the option of making the object "sticky" or not "sticky".
If the object is given the "sticky" attribute, then a line will "stick to" the object it touches or overlays.
Whenever the object that the line is stuck to is moved, the line will "rubber-band" and follow that object's movement.
The term "rubber-band" is a term well recognized in the CAD art and describes a line drawing technique wherein one end of the line is fixed and the other end follows a draw cursor on the screen until it is fixed by command.
At that time, the line is drawn taut, like a stretched rubber band.
If the user does not give the object the "sticky" attribute, then the endpoints of lines previously touching or overlaying the object will remain where they were originally placed no matter what happens to the objects they originally touched.
Thus, the user has at his or her command the option to provide an object with the "sticky" attribute so that lines which touch or overlay the object will move with the object.