HEPING@kuhub.cc.ukans.edu (08/01/89)
In a lot of window or graphics systems, drawing an arc is different from the way people usually think. It is defined as 45 degree from the line x=0 to the line pointing to the up right corner. I just know it is because it is more efficient. What is the algorithm? On the other hand, if I had a point on an arc create by this algorithm, how could I decide the angle? any comments are welcome and appreciated. Phil