tag:support.nodebox.net,2012-11-01:/discussions/nodebox-2-3/6166-delete-a-circleNodeBox: Discussion 2019-11-22T21:22:33Ztag:support.nodebox.net,2012-11-01:Comment/478592892019-11-22T05:10:13Z2019-11-22T05:24:24ZDelete a circle<div><p>Hi Patric,</p>
<p>It looks like you're trying to make a clean paraboloid. I was unable to replicate your method just from the screenshot. I'm guessing your copy node is scaling and vertically translating an ellipse, but I couldn't tell what scaling factor and y offset you were using. (If you want me to play with that, please reply with a zipped copy of your Nodebox file attached.)</p>
<p>Nevertheless I was able to achieve what I think you're aiming at using an entirely different method (see screenshot and attached Nodebox file).</p>
<p>I used a quad_curve node to create the parabolic outline of the shape, and used resample to plot points along that curve. I then paired points on the left side of the parabola with points directly across from them on the right side and drew a series of circles connecting each pair.</p>
<p>As you can see this produces a cleaner paraboloid without the dark circle on the bottom. You can adjust the shape of the parabola with the quad_curve node and adjust the spacing between each circle using the number node feeding into the resample node (choose an even number).</p>
<p>I'm sure there are other ways of doing it, but this seems to work pretty well. Please let me know if this works for you.</p>
<p>Thanks for asking such an interesting question!</p>
<p>John</p></div>johntag:support.nodebox.net,2012-11-01:Comment/478592892019-11-22T09:39:38Z2019-11-22T09:39:40ZDelete a circle<div><p>You solved it beautifully! Thank you very much. I bought a Roland dxy 1100 and I want to scratch it a little. I will let you know what the result is.</p></div>Patryktag:support.nodebox.net,2012-11-01:Comment/478592892019-11-22T21:13:51Z2019-11-22T21:13:51ZDelete a circle<div><p>Cool! I would love to see a photograph of some plotter output - maybe in the "Show Your Work" section.</p>
<p>I've long thought that NodeBox and plotters could could work well together; you might inspire others to try it. I'd be eager to hear some details of exactly how you did it, problems, tips, etc.</p>
<p>John</p></div>johntag:support.nodebox.net,2012-11-01:Comment/478592892019-11-22T21:22:32Z2019-11-22T21:22:33ZDelete a circle<div><p>As soon as I can run everything I will put on the forum :)</p></div>Patric