that fine…Paul – if I could give you a little bit of feedback on the class you gave on blended morph – I found it tremendously useful but I have a tiny tiny criticism in that section on bezier curves…all that stuff about how the function worked as geometry was, to my mind just a waste of time. All that needs to be said about bezier curves is that it takes two points and two tangents and from that you can calculate any point on the curve. The math is well known, worked out a long time ago, and there’s no need to re-invent it or spend time explaining it in a ‘hacky’ way if you know what I mean…bezier functions are not a ‘hack’ – they are explicit maths functions, which yield a smooth curve…that’s it. No rigger has to know more than that, really… sorry…you’re stuff is usually spot on and all but this palaver about the recursive tehnique is really just , well…padding…you could better use that in my opinion on other,more – rigger related material…anyway…thanks again for your great classes…
I don’t know how good you are in math but you look as a beginner in computer graphics. The method used by PEN was specially made for fast drawing of bezier curves. This recursive method cuts bezier curve on drawable pieces with predefined accuracy. This method gives much better approximation than pure math formula.
The another benefit of using PEN’s method is that you get length-to-path parametrization for free. And I hope it doesn’t need to be explained why length param more useful than path param in … for example, the IK spline solving.
Thank you for the honest feedback. The math is well known, but I find that alot of people, myself included like to know what it is actually doing.
I’m going to set up some test when I have the time and I will post the results in a new thread.
Ok. Thanks for that Denis.Very interesting. I’m always willing to learn more things. I’ve already admitted I’m just a maxscript hacker. (I do have a degree in maths tho). Perhaps Paul could include that info on his site. I would love to know result of speed test Paul:)