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Ah, yes, that works. Thanks for tracking that down.
I'll bet you can hear the enhancement request coming already... How about turning that off automatically if the user requests to add a spline point. The fact that no one here (including you) knew this off the top of their head means that its too obscure (low discoverability).
Thanks again for taking the time to get a good answer.
Matt, this is by design and not a bug. When you draw a 2 point spline and add curvature to both ends we give you a solution akin to a C3 spline (much better solution than C2 in a lot of cases).
If you want to add iterium spline points, turn off "degree raising" in the property manager.
Thanks for the clarification. I still want access to those higher order curves though.
My understanding is that c0=contact, c1=tangency, c2=curvature, c3=rate of change of curvature (slope of the comb is tangent from one side to the other). The "Raised Degree" option is only avaiable when c2 is applied to both ends of a spline, and only on a 2 pt spline.
Could you clairfy what you mean by C2 and C3?
My understanding of continuity is that C1 is position; C2 is tangent; and C3 is curvature, which is what we expect when we're asking for equal curvature at the end of a spline. So yes C3 is better than C2 and we expect no less.
But did you mean that when we're asking for equal curvature out of a 2 point spline that you're raising the spline from a 3 degree curve to a 5 degree or higher curve? If this is the case, why can't we add the extra spline point to a 5 degree curve and keep it a 5 degree curve? Or better yet, don't add the point but allow us to raise the curve dgree to give us more polygon control points? If the higher order curves are embedded in the kernel, let us at them!
It's as easy to reproduce as it sounds, but here it is. I already sent it to tech support, and they already assigned a number, SPR 338599.
Thanks for looking at it.
Matt, can you please email me the example or post here.