Manipulate Bezier Curve directly Tool
Grab points on Bézier curves and designate new locations for them
Manipulate Bezier Curve directly Tool

Select an existing Bezier curve drawn/edited with the Bezier Curve Tool from the SketchUp team and use Manipulate Curve directly in the Right Mouse Button context menu to activate the tool.

Then grab an interior(non-end) point on the Bezier curve selected and designate a new location for it, intending that the new curve should pass through the changed location.

Useful for designers who may not like the concept of control points and would prefer to manipulate points on the Bezier curve directly.


andrea f's picture

Hi Jacob,

I just bought your plug in, it's great thanks!

One thing, I would like to know if it is possible to manipulate a curve in a way that it passes through multiple points maintaining it's "smoothness" .
I can work out easily picking an intermediate point but when i try to manipulate the curve so it passes through a second one, it loses the aligment with the first one..
I hope this makes sense.
Is there a way to do this!

Jacob Samuel's picture

It does make complete sense but unfortunately, this extension, or any of my other extensions, doesn't currently have the capability of generating a Bezier curve that passes through the user specified data points.
It is definitely a good idea and will keep it in mind when I get time to start working on the next extension

Right, I tend to agree for the need to be able to drop in points and make any given segment a "cruve".
In most CAD programs you can made a line segment. A straight line defined with only two end points.
From that you can either convert that segment into a curve which will show the beizer curves and allow you to edit them.
You can add additional points to the segment and pick and choose which segments you want to be curves and which simply segments or strick poly lines.

I am finding it very difficult to figure out how to manually edit shapes in a logically manner.
I will be purusing goodle and knowledge bases a plenty in hopes to find a Sketchup solution.

Jacob Samuel's picture

Just wanted to let you know that an extension to draw Bezier Curves through user specified data points( is now available on the Extension Warehouse.

Also, shamelessly plugging my extensions, there are a couple of paid extensions of mine, with a trial period of 14 days, you can use to add control points to existing curves/lines by elevating their degree. They are Bezier Curve Manager ( which is compatible with SketchUp 2015 and above and NURBS Curve Manager( which is compatible with SketchUp 2016 and above.

Get a Debugging/Server Error when I try to download this one

Jacob Samuel's picture

I just downloaded it and didn't get any error.
Hopefully, what you saw was something temporary that has since been fixed.

Kevin F's picture

excellent once i found out I had to click on curve to open I was away just what i needed godd job

Joseph S's picture

So, I have installed this extension, and I have the Bezier Curve Tool installed as well. I draw a curve, and now I want to modify it, using this extension. That's what this is for, right? I cannot even find it. There are no new icons, and it isn't on any menu that I can see. Where the heck is it???

Jacob Samuel's picture

This extension does not any add any toolbars/icons or items to the top level menu.
It adds "Manipulate Curve directly" to the Right Mouse Button context menu.
Once you select a Bezier curve and do a right click you should be a able to see it in the menu that pops up.
Clicking on that menu item should activate the tool.

You might want to restart SketchUp to make sure the extension is loaded.

Let me know if you still don't see it.