| [ KAIST ] in KIDS 글 쓴 이(By): mkjung (iSTHMUS) 날 짜 (Date): 2000년 11월 14일 화요일 오후 07시 48분 55초 제 목(Title): Re: B - Spline 알고리즘. 커브를 n개의 Control Point(3차원좌표)를 이용해 OpenG로 그리고 싶은데..책을 읽거봐도 잘 모르겠네요. 누구 고수님들 한수 부탁합니다.. ============ the easist way is using the very simple vector calculus. :) if you have two point p_i and p_{i+1}, then we have a curve controled by these two points given by a_i p_i + (1-a_i) p_{i+1} = q_i Now if you have one more points p_{i+1}, then what you do is form the vector again with q_i and p_{i+1}. Do it recursively then you get B-spline in terms of the parameter a_i, a_{i+1}, ..... , it's only a matter of how you choose these a_i's. |