摘要：
Assume a parametric curve can be denoted by P(t), any attribute T can be interpolated linearly with:T = (1 - t) * T0 + t * T1 (1)T0 is the attribute at t=0, and T1 is the attribute at t=1.Differentiate equation (1) we have:dTdx = (T1 - T0) * dtdx (2)Now the problem turns into how to compute dtdx.Usi 阅读全文
