[Plugin] BezierSpline - v2.1a - 01 Nov 18

Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby d12dozr » Fri Apr 29, 2011 8:38 pm

Sounds like a great addition to an excellent tool! :thumb: Good idea, guys.
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby pilou » Sat Apr 30, 2011 12:24 am

More is the friend of Better! ;)
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby ivreich » Wed May 04, 2011 12:27 am

Sweeeet. fredo responded to my post! im a little starstruck now... :sketchstatic:
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby herbert2000 » Fri May 06, 2011 11:06 am

it's impossible for me to edit polylign....
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby ivreich » Fri Jun 03, 2011 2:27 pm

NEW FEATURE SUGGESTION: "MEAN CURVE"

Hi again Fredo

I know it hasn't been long since my last feature suggestion ("blend curve by bezier"), but here's another one you might be interested in:

The "mean curve" command in Rhino creates an intermediate or "average" curve between two existing curves, which is especially useful for adding detail to contour maps and such. Is it possible for Bezierspline to do the same?

I have attached an image showing how I imagine it would be done manually; i.e. draw connecting lines linking corresponding vertices on the two original curves, then drawing a third curve linking all the midpoints of those connecting lines to create an "average" curve.

What do you reckon? The added advantage of Bezierspline automating this is that the generated curve would be an editable bspline as well. Does anyone else think this is a good idea?

Cheers,

Joel
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby carlofacultatif » Wed Jun 22, 2011 1:33 am

merci fredo!!!!!
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby jeff hammond » Wed Jun 22, 2011 5:32 am

ivreich wrote:NEW FEATURE SUGGESTION: "MEAN CURVE"
Does anyone else think this is a good idea?

Cheers,

Joel


hey Joel
i'm not quite convinced that your manual method is actually giving a mean curve.. i assume you're just connecting vertices then drawing segments through the midpoints.. i guess it sort of looks ok in the example you posted but it's not going to always work out that way.. see these two curves (well, one curve that's been copy/flipped)..

mean.skp


try your manual method on those and you'll soon run into problems.
while it might be possible to make a plugin that can do an actual mean curve (or something close to it) in sketchup, i think it's going to be much more difficult then simply playing connect the dots.
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby ivreich » Fri Jun 24, 2011 2:51 pm

Hi Jeff

Thanks for replying. You're right; the manual method is simply "connecting the dots" as you say. It was the most logical way of illustrating my point. I think I see your point though; the manual method presumes a more regular spacing/matching of vertices between the two curves.

I suppose complex pairs of curves would have to be "rebuilt" (pardon the Rhino lingo; I've just finished working at a firm where Rhino is pretty much a religion: if it isn't built in Rhino it isn't worth looking at) to match each other's vertices before the manual method can be used.

I don't know the math behind creating mean curves, it was just an idea that popped into my head one day at work. Any other suggestions?

Cheers,

Joel
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby jeff hammond » Sat Jun 25, 2011 8:14 am

ivreich wrote:
I suppose complex pairs of curves would have to be "rebuilt"


this is where sketchup really starts to breakdown as far as trying to make it nurbs like..
you can, in essence, rebuild a curve using this plugin.. if you right click on one of the curves in the mean.skp then go BZ- Convert To --> Polyline Divider (or polyline segmentor) then you'll be able to set the curve's vertices to an equal spacing (or to an evenly divided # of segments)..

the problem is, you end up with too many vertices in the looser parts of the curve Or too few in the tighter areas. (at least in the example sketchup.. these commands come in very handy for many situations)..

re: mean curve in rhino.. personally, i don't use it or have a use for it (that i know of ;) )but one thing that sort of surprises me is that illustrator actually has a mean curve command that is seemingly superior to rhino's.. with illustrator, you can choose the amount of divisions (ie- 2 new mean curves in between the original ones).. you can do it with rhino by repeating the command as long as you want an odd amount of average curves but even then, it takes a lot longer than doing it once..

but hey, i guess i'm going way off topic here :)
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby fredo6 » Sat Jun 25, 2011 2:19 pm

It's relatively easy to do it.
Actually, I have this type of function embedded in Curviloft
The only remaining part would be to build a decent GUI for selecting the curves.

Fredo
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby jeff hammond » Sat Jun 25, 2011 4:15 pm

oh yeah. i guess with curviloft you can do exactly this as long as the curves are in 3D space (i can't get it to work if both curves are flat and on the same plane)


mean3D.jpg
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby TIG » Sat Jun 25, 2011 4:55 pm

EEbyRails will make the average-curve between the two rails if the Profiles are a straight-line curve made from two equal length edges [use divide on a line drawn between the curves ends and weld as a curve]. This works in full 3d AND in 2d even if the curves are flat and even coplanar... Just erase the mesh's ribs and use the 'spine' edges to weld into an averaged-curve...
Capture.PNG
Obviously the average is 1/2 but if you wanted to weight the result - let's say a 3rd then divided the profile line in three, erase the ribs and the two mid- spines are at 1/3 from their nearest 'rail'...
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby jeff hammond » Sat Jun 25, 2011 5:13 pm

the thing with curviloft is that you can choose to generate only the edges if you wish so there's no deleting surfaces afterwards etc..


cloft.jpg
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby TIG » Sat Jun 25, 2011 5:21 pm

Jeff... doh! moment for me... :oops:
Use EEbyLattice and chose 'Rail' only option to get a central spine curve [auto-welded and grouped] without the needed to mess on erasing ribs made from EEbyRails :roll:
Capture.PNG
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby jeff hammond » Sat Jun 25, 2011 5:27 pm

TIG wrote:Jeff... doh! moment for me... :oops:
Use EEbyLattice and chose 'Rail' only option to get a central spine curve [auto-welded and grouped] without the needed to mess on erasing ribs made from EEbyRails :roll:
Capture.PNG


lol!
i had forgotten about that option as well
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby fredo6 » Sat Jun 25, 2011 10:20 pm

Jeff Hammond wrote:(i can't get it to work if both curves are flat and on the same plane)

Jeff,

Do you have a particular model where it does not work. In general, that should give the results.
Curviloft with 2 planar curves.png


By the way, you can choose the number of internediate curve via the #seg parameter (but not the spacing).

Fredo
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby jeff hammond » Sat Jun 25, 2011 11:38 pm

hi Fredo,

it's a lot faster for me to just explain it in a video.. i hope it makes sense


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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby fredo6 » Sun Jun 26, 2011 12:21 am

Jeff,

Well spotted!

1) Options for generating geometry is one feature of Curviloft which is not terminated. I may however add the option to keep either / or the mesh lines in a next release quickly

2) in Skinning, I purposedly removed the meshing of surfaces that are planar, precisely to avoid too many polys and faces. Unfortunately, I did not provision an option to inhibit this feature.

Thanks again. I'll try to incorporate all this in a next release

Just one remark: with your skinning approach, you don't need to divide the segment. Curviloft can do it for you via the Sampling parameter.

Fredo
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby jeff hammond » Sun Jun 26, 2011 12:57 am

Fredo6 wrote:Just one remark: with your skinning approach, you don't need to divide the segment. Curviloft can do it for you via the Sampling parameter.

Fredo

ha.. yeah, i knew that (as it's a great feature of curviloft in general). what i meant to do was use the manual divide as a way to show me trying to force curviloft to make the lines to no avail.
for whatever reason, i ended up doing it in a few different parts..
i should maybe try following a script next time i make a video :D
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby redsteel » Fri Jul 01, 2011 10:45 pm

Hi Fredo

I just want to say thank you very much!
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby vidy » Wed Jul 27, 2011 11:45 am

Dear Fredo,

First of all i want to thank you for this magnificent plugin.. :thumb:
but i have question, is there a way to slow down the movement of the grip, when we select a grip or a point to edit it?? i usually have this problem when i want to move it on certain axes (after im press ctrl button)

Regards,
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby clifdon » Wed Aug 03, 2011 11:12 pm

Great thank you for this plugin :).
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby helmholtz » Sun Aug 28, 2011 3:19 am

Thank you greatly good sir :)
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby marcel.forum » Wed Sep 28, 2011 6:19 pm

Dear Fredo
Big thanks for this plugin.

--
Marcel
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby xrok1 » Wed Oct 05, 2011 11:06 pm

spotted this in another thread. Worth noting:
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby rv1974 » Tue Oct 25, 2011 8:47 am

Hi Fredo,
I recently updated your spline tools set and unfortunately it stopped functioning.
I get the toolbar, I can activate the commands, but they simply don't draw.
I'm pretty sure the file's structure is OK, the FredoLib is updated.
What could be the reason?
Thank you in advance.
BTW where could I download the older version?
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby thomthom » Tue Oct 25, 2011 9:02 am

Have you tried reinstalling it? Completely removing the existing plugin first and then reinstall to be 100% sure everything is installed correctly.
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby rv1974 » Tue Oct 25, 2011 9:18 am

thomthom wrote:Have you tried reinstalling it? Completely removing the existing plugin first and then reinstall to be 100% sure everything is installed correctly.

Did it a couple times it didn't help.
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby thomthom » Tue Oct 25, 2011 9:22 am

What is your system info? Windows and SketchUp version?

Does none of the drawing functions work?

I cannot reproduce it here on my end. Everything appear to work. SU8M1 Pro, Win7.
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Re: [Plugin] BezierSpline v1.4f - 23 Jan 11 (upgrade SU8)

Postby rv1974 » Tue Oct 25, 2011 9:46 am

thomthom wrote:What is your system info? Windows and SketchUp version?

Does none of the drawing functions work?

I cannot reproduce it here on my end. Everything appear to work. SU8M1 Pro, Win7.

it's win7x64 + su8 (see the printscreen).
none of drawing tools work.
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