Full Version: Script for Curvature Calculation

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Hi Hamish,

Thank You for the interessting link and I am glad to here, that the script is interessting for you.
yes, I think that a gaussian method could be faster, also for this small matricies. But, I have some Problems at the Moment: Frist - Time(as we all;-). The second enlarge the first Problem. The script has a serious design error, that kills also the performance. The function for calculating the centerpoints (csp) has 3 points as Parameters. So every call, biscectional planes were calculated - for the next call the second plane of the previous calculation is the first of the actual calculation. So I have a lot of redundant plane calcs. To improve the Performance a lot of changes have to be done.

Kind regards
Karsten

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@ Karsten From the other thread! (where was the "ccc" );)
and this mysterious line (for me at first view)

<< The script without coloring and the node is in the extensions under infos. Insert the node, connect a curve to it and the out to an output. Press run - that's it.

A sort of miracle! :)



I have just a doubt in what folder put the ccc.js and ccc.html (so i put them both commands and nodes folders ! )

despit of that seems that's is working like a charm! :)

and damned I must translate an another node! :)

Edit: In fact a lot of !!! (all extentions' nodes that i have missed! Not only the "infos" but all the rest! :D

Here only the Infos/ "Curvature" French Translation is made!



PS That will be a task to find what was the start curve who give this last Blue/Red colorized drawing! ;)

In fact easy if you can zoom ! ;)

Just a question : why the curve selected dont stay drawn during the application of the Infos node ?



And does it normal that a simple circle gives an "open result" ? (same for the ellipse of the first image of this post)



An hard day comes with all that to translate! :)

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Hello Pilou,

the problem of the open analysis curve for closed curves is caused by the patharray factory. The script works with a startpoint of the curve, arrays it to the curve and calculates the center of an theoretical arc for 3 following points. For a closed curve the arrayfactory don't calculate the last point, because it's the same as the start point. It's possible to improve that, but for the analysis it has not an effect, because the start and end point would need a previous point and following point. I solved that with a lagrange interpolation. The old script don't calculates start and endpoint. Ccc has to be placed in the command folder. It is complete independent from the node stuff. It's older than the elephant. Please play with the number of sample points and rhe scale factor.

Have a nice day
Karsten

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p. s. If you want to see also your curve in the nodeeditor while running a curvature analysis you can clone it first and give one clone to a second output node.

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Thx for all these infos!
It's not precisely for me but for French people who will ask me that! :)

About the double curve by clone : very tricky simple!
I'm sorry I didn't find it all by myself!

Have happy Christmas...and coding!
See you the next year!

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What is CCC ? Construction Curvature Calculation ?

Seems there is something! Like there is no title appropriated?

In English I have 2 Lines : (and not Select Curve(s) to Analyse! )
Choose Number
of Sample Points






Result!

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I saw a film, there was some saying : Give me names of wild animals! Answer: Evil butterfly!

My first mind was calculate curves curvature, but it's to long so CCC, but I can't speak french so it's up to you how you will translate it. The right name in english is comp curve, I think. I read also porcupine analysis, but I think it's for surfaces and also a word used by Dassault. I'm not shure if they can english really. Some other naming in CATIA was raising my doubts in the past;-) Anyway, In french most of the things sounds better and more graceful.

Have a nice day
Karsten

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No, my question was not about some names of things (except CCC) but just why that is writed inside the code is not shown on the panel !
Aespecially on the title!

I have offseted the text lines on the Nopad++ for have the right thing! :)

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