円弧 と 双曲線

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b0 = (1,0), weight w0= 1 b1 = (1 , tan s/2 ), weight w1=cos s/2 b2 = (cos s, sin s ), weight w2= 1

b0 = (1,0), weight w0= 1 b1 = (1 , tanh s/2 ), weight w1=cosh s/2 b2 = (cosh s, sinh s ), weight w2= 1

ベジエ曲線とベジエ曲面