1 Topic by Rocketman

  • Rocketman
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Topic: Determining arcs

If I had a shape in a jpeg image and wanted to draw it using sketchups arc tools how do I determine where to place the end and/or mid points? It isn't perfectly clear where one arc ends and the next start, particularly if they are bent in the same direction. Is there a good way to maybe place the edge of the shape against its mirror image and draw lines between matching points and across midpoints to determine where all arcs should go?

2 Reply by pirvan

  • pirvan
  • pirvan
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Re: Determining arcs

While you can do what you're trying to do with arcs, as you found out, it's not easy when an arc changes its radius .  That's what bezier curves are for.  Your best bet is to download the bezier curve tool for Sketchup, and use it instead of arc.

https://extensions.sketchup.com/en/cont … curve-tool

To print or, 3D print, that is the question...
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3 Reply by Rocketman

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Re: Determining arcs

pirvan wrote:

While you can do what you're trying to do with arcs, as you found out, it's not easy when an arc changes its radius .  That's what bezier curves are for.  Your best bet is to download the bezier curve tool for Sketchup, and use it instead of arc.

https://extensions.sketchup.com/en/cont … curve-tool

Cool. I'll check it out.

4 Reply by Rocketman

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Re: Determining arcs

At least with the sketchup plug in Bezier tool I can't control the number of line segments which is a huge issue. Any similar tools that remedy that?