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How to offset circle?
Posted:
Jun 13, 1996 10:04 AM


I want to plot the equation of a circle only with an offset along a line through the origin.
I know that r=5sin(t) t=theta will plot a circle of radius 5 centered on the positive y axis at 2.5.
I also know that if I include a term in the argument of the sin term I can swing the circle through 360 degrees hinged at the origin (r=5sin(tang)).
What I want to do is to slide the circle along a line drawn through the origin such that the center of the circle is located on this line instead of at 0,0. I want to draw the line at some arbitrary angle and be able to slide my circle up and down the line.
I need an equation (I am using Graphmatica). Pointers?
If I have been unclear on what I need I will be glad to fax or email individuals a sketch.
thanks, russ
 Russell W. Patterson System Protection & Analysis Tennessee Valley Authority work email: rpatt@tva.gov
Mississippi State University Graduate School of Electrical Engineering school email: rwp1@ra.msstate.edu
Home (Whitwell, TN) home email: rpatt@chattanooga.net 



