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.其中, .于是, 根据定理1, 可以给出一条B样条曲线升阶的算法: for (i=k to k+s-1 by 1) Insert Knot ti into the curve; �j = -1; ��for (i=k-1 to n+s by mj+1) ��if (i == k-1) Start = 0; ��else Start = k - mj ; ��for (v=Start to k by 1) ��j = j + 1; �� ��for (u=0 to k-1 by 1) ��endfor endfor |