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Here's a simple script that takes a selection of points and arranges them into a circle. Also works in edge and polygon mode. Make sure you only select the outer elements i.e. select a ring of points. if you don't do this, the plugin won't work.

Copy the script into your scripts folder which you access via the Script menu on the toolbar. Restart C4D and you'll find the script in the Script menu. Do your selection then run the script. Resize the circle of points, edges or polygons using the scale tool. You can change the default size of the circle by editing the script.

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Thanks! It works on R17 on Windows 10. 

However, is there any way, I can make it a semi circle rather than a circle? 

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13 hours ago, bentraje said:

Thanks! It works on R17 on Windows 10. 

However, is there any way, I can make it a semi circle rather than a circle? 

No.

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But you can do it with few clicks more solution... :-)

Explanation in attached video. (it´s simple since script "deform" only exact loop of points, so only 2 points need to be welded)

semicircle.zip

 

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Hi mate! Thanks for the reply. I thought of that workflow before but it is kind of cumbersome if you have several "layers" of points to perform that. It As a background I made this post a while ago.
 

 
I perform this command usually for character modelling where in I round the limbs or arms. Sometimes I also need to round the torso so I get a better starting point, that is why I need it on semi circle. 

I also thought of having True Symmetry and performing command, but somehow the whole process is cumbersome. So sometimes I just make a cylinder and snap all those points to make a semi circle.

But thanks for answering my question! :) 

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This seems to work well, except the circle ends up three times the size of my model. Is it something I'm doing wrong? The model isn't tiny.

Screen Shot 2017-04-06 at 11.24.23 AM.png

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Script  use own setings for result radius and of course in case you have very small object, you get oversized circle. You can edit internal seting for radius inside script or simply scale in XY plane to value as needed...

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Wow, was doing this with a bevel, this is soo much cleaner and rounder, many thanks man!

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20 minutes ago, Orphydian said:

any guide on how to edit this script to change the default size or the circle ? 

Install Points to Circle into your C4D Scripts folder, restart C4D, then go to Script>Script Manager, choose the C.O.F.F.E.E. tab and make sure Points to Circle is chosen as the script. Then alter var radius = 50; on Line 8 to the radius you want:

 

Points_To_Circle_radius.thumb.png.9a02ca4ad43ac99f04dd86c63a467d70.png

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9 minutes ago, Orphydian said:

Also the script seem to rotate the points by default. Is it possible to edit the script to  diminished that?

Not sure why you have that issue, but the easiest way to resolve that is to simply use the Rotate Tool to fix the problem.

 

You can also change the circle radius size without the change to the script using the Scale Tool.

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You need edit menu.

1, Open Windows/Customization/Customize Menus...

2, Open Windows/Customization/Customize Palettes...

  --- now you have opened 2 windows ---

3, In customize menus window switch from default "M_Editor" to "M_Modeling_Point"

  --- Now you can see right click menu in point mode (where it is expected, but can be inserted in any menu as you want) ---

4, Into filter in customize commands window write "Points to circle"

  --- All commands with this words will be filtered, it´s quick way to find any command you want ---

5, Drag "point to circle" command from customize commands window to customize menus window on place where you want

6, Press "Save all changes" and close all windows.

 

customize_RCmenu.thumb.png.ba89e1c8e922b6dce6fda8c702b66d30.png

 

 Now is command added into right click menu in point mode...

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