CAD: neat, but imprecise

"the biggest drawback of contemporary 3D modelers today is ..."

40 years after NURBS were included in IGES is the perfect time to start a series on the different ways to deal with the imprecision inherent in CAD. This recap of terminology points out that “[c]alculations with NURBS … are numerically stable” and yet “some fundamental algorithms … are numerically unstable”. Don’t miss this interview with Ken Versprille that points out the importance for interfaces that do not “require the [user] be versed in all the intricacies of the mathematics”.

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