Full Version: Convert Control Points to Points ?

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> No it's not "Geometric Points" It's only "Control Points"!

Have you actually drawn or imported something in MoI and used "show points"?

If you have for example a points text file, from the Internet etc. and want that
it works you must have also Control Points for Z, so that the import points script
shows you the control points, prior using Max's Voronoi script.

Regards
Stefan

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I think the "challenge" was issued a while back for someone to write code to get the control points
from the Rhino .3dm file format, but as far as I know, no one has done so :-)
(As an amateur programmer, I have made no such effort.)

- Brian

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Hi Brian,

interesting! I don't have Rhino but thought when you import something from Rhino
it should work as well in MoI... Can you point me to such a .3dm file? Would be
interesting to see such a case.

[EDIT] o.k. you mean a .3dm from MoI i assume and then reading only the control
points from that file into MoI...

It would also be a lot easier to help if Pilou would post a .3dm file or in case it is a points
text file, the first couple of lines and not all the text...

Regards
Stefan

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Hallo!

I also have a question about that:
Is it possible to show (and use) the points with which the curve is drawn, but not the controll-points?

Is that what you mean also?

Franz

Image Attachments:
Curve_drawn_through points.jpg  Curve_drawn_through points2.jpg 

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PC Windows 10
http://moiscript.weebly.com/uploads/3/9/3/8/3938813/4_ctl_points.3dm

With the Voronoi Max Plugin Control Points give nothing!
When I draw geometric points all works fine!
Is that more clear ? :)

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@Franz i don't understand the purpose of that but you can use the rebuild
command (to get more point wich are on the curve) and then copy those point.

@Pilou i have used your sample and did it again like i explained and it works here.
(but i can't upload the picture to show you, because of an error i get)

@Brian i am no programmer and i don't know how useful it would be to extract
control points, like for example from a bool'ed cube and a sphere...

But i did a little test with .sat file export and this one liner... :-)

grep -e "point" infile.sat | cut -d" " -f4- | sed -e 's/^\(.*\) .*/\1/' > outfile.txt

This should give all control points in a .sat file, which IMHO should be read in
by the import points script.

Regards
Stefan

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Hi STEFAN,

I was referring to openNURBS SDK.

https://www.rhino3d.com/opennurbs

- Brian

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<< (but i can't upload the picture to show you, because of an error i get)

Normaly image must be directly appears on the forum! ???
I had nothing made different than the other hundred images that I previous posted! :)

About the CTRL Points / REAL Geometric Points, Mac is different than PC ?

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Thank you Brian for the pointer!

I still don't get it however why someone requested an extraction of control points
from a .3dm (NURBS?) file. :-)

@Pilou maybe i have reached my posting limit, for posting attachments... ;-)

Regards
Stefan

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Ah I had believed that was mine! :)

So try https://postimages.org I use it in free from decade without problem! :)

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> About the CTRL Points / REAL Geometric Points, Mac is different than PC ?

I just tested it on my Notebook with a sphere, like i have shown with my picture,
and it works also with MoI 3.0 under Windows7 Professional.

Hopefully Michael or someone else can give you better help, because i run
out of ideas.. :-)

Regards
Stefan

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<< I still don't get it however why someone requested an extraction of control points
from a .3dm (NURBS?) file.

I'm living proof of that! :)
For me they don't work like geometric points inside some plugins! :)

But I am curious of what do you obtain when you use the Menu "Type" Points of your "Control Points" copy Pasted?
Normally nothing but who knows...

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Well..., when i copy and paste my Control Points i get on Mac and Windows Points.

When you look again at my picture carefully you see in the right menu points.

BTW. Michael says the same in the Hidden Secrets section!

http://moi3d.com/wiki/Hidden_Secrets

Regards
Stefan

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Ok That works!
So for convert Controls Points in Geometric Points just copy Past in the Clip Board! :)

I don't know what i did before for no successful that!

In fact I copied / Moved the Control Points selected : seems it's not the same than copy to clipboard because curve is always living!

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Hi Pilou,

we spend now the whole day to solve this problem... :-)

And i thought that my postings, even if i am no native
English speaker, were clear enough compared to the short
explanation in the secret section...

Regards
Stefan

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Maybe but with that we avoid to make a new plugin! :)
And that Copy Move Control Point of a curve (even this curve itself is not selected) is different than Copy to the ClipBoard! :)

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Hi Pilou, yes as Stefan has been saying selecting a curve's control points and then using copy/paste (ctrl+c/ctrl+v) will create point objects at those locations and those will work in the scene browser Types section.

- Michael

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Yes! :)

Now convert Points to Control Points is the new challenge!

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Hi Pilou,

> In fact I copied / Moved the Control Points selected : seems it's not the same
> than copy to clipboard because curve is always living!

Yes that's correct - using the Transform > Move or Transform > Copy commands with curve control points selected will transform the curve. To duplicate the points you need to use the Edit > Copy and Edit > Paste instead.

- Michael

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> Now convert Points to Control Points is the new challenge!

Use SavePointFile to write the point objects to a text file (use the OSX version even for Windows):
http://kyticka.webzdarma.cz/3d/moi/#SavePointFile

Then use ImportPointFile to read in the points, it has an option to make a curve out of them:
http://kyticka.webzdarma.cz/3d/moi/#ImportPointFile
again use the updated version that works with OSX, the original versions of these only work with MoI v2, the ones updated to use MoI's built in cross platform functions for reading and writing text files will work on MoI v3/v4 on both Mac and Windows.

One thing to note though is that the ordering of the points is significant when making a curve out them.

- Michael

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