I am creating a graphical representation of nodes and edges
(i.e. lines and circles). Nodes are the end points of the edges. If
I drag the node, the corrosponding edges should also be moved and
redrawn to new coordinates. for eg, suppose my edges coordinates
are x1,y1,x2,y2 and my two corrosponding nodes coordinates are
x1,y1 and x2,y2. Now I am dragging the first node to some other
location, let's say x1+20, y1+20 then my edge should be redrawn to
x1+20,y1+20,x2,y2 . Pls guide me what I should do..??