Divide oval

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Divide oval

Postby Quail333 » Fri Dec 28, 2018 2:25 am

I am trying to divide an oval into equal segments, also I would like to array elements equally around an oval. This would be to create settings for jewelry design. Thanks
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Re: Divide oval

Postby Dave R » Fri Dec 28, 2018 3:51 am

You could use Polyline Divider in Fredo's Bezier Spline toolset. (Right click on the oval and select BZ-Convert to Polyline> Polyline Divider. Then you could use Chris Fullmer's Component Stringer to place instances of a component around the edge. Or use Path Copy for that. All are in the Plugin Store accessed at the top of the page.
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Re: Divide oval

Postby Quail333 » Fri Dec 28, 2018 3:58 am

Thanks, I am still getting a handle on basic Sketchup skills do you think using plugins would be confusing or should I dive right in?
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Re: Divide oval

Postby Dave R » Fri Dec 28, 2018 4:09 am

My general advice is to get a handle on the basic tools before you dive into plugins and extensions. There are some folks who jump right into plugins and never learn what the native tools can actually do and then when they need to do something new to them, they start looking for another plugin instead of looking at the native tools. I don't think that's a great way to learn SketchUp.

There isn't a native too for equally dividing the oval (is it an oval or is it really an ellipse?) so an extension would be the way to go unless you want to do some math. Actually, an oval (parallel sides and semi-circular ends) wouldn't be terribly difficult to sort out manually but an ellipse would be rather involved.

As for arraying the elements for the setting (prongs?), if you draw the first one and make it a component, you can set the component's origin, which is it's insertion point, in the proper location so you can basically drag and drop them into place from the Components panel. It's certainly not difficult but it can be a little tedious. It doesn't require any extensions, though.
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Re: Divide oval

Postby Quail333 » Fri Dec 28, 2018 5:09 am

David R, that was kind of you to answer my question in depth, I will keep working with my 'Dummies" book and You Tube tutorials for a while. I just need to be patient, I know what I want as a designer and I want it now! Happy New Year! Michael
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Re: Divide oval

Postby Dave R » Fri Dec 28, 2018 5:25 am

Happy that helped.

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Re: Divide oval

Postby Box » Fri Dec 28, 2018 5:43 am

Here is a link to quite a bit of info on this subject.
https://forums.sketchup.com/t/elliptical-array/17102
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Re: Divide oval

Postby Quail333 » Fri Dec 28, 2018 4:11 pm

Thanks, I have been banging away on this issue for a couple days.
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Re: Divide oval

Postby baz » Sat Dec 29, 2018 11:32 pm

Quail333 wrote:Thanks, I have been banging away on this issue for a couple days.


Or you could do it all by eye. Artists have been winging it forever.
In fact, 'exact' spacing can often look wrong aesthetically, compare a kerned to an un-kerned font or the margins around a framed picture for example.
I have learned to trust my eye.
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Re: Divide oval

Postby slbaumgartner » Sun Dec 30, 2018 4:59 pm

I agree with @baz, with the caveat that it depends on whether your goal is aesthetic or precision. Sometimes the precise answer looks awful, but might still be the correct answer to the problem at hand. Also, despite the myths about famous artists drawing a perfect circle by eye, the more likely explanation is that their circles are actually imperfect but close enough that the eye doesn't care.
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Re: Divide oval

Postby Quail333 » Tue Jan 01, 2019 5:58 am

It is for a jewelry component and getting what you want on a small scale and symmetrical and to fit a stone is not easy by hand that is what I hope Sketchup can help me do. Incorporating an organic element is tougher than symetry when the whole thing has to come together to make a composition.
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