"exponential" spacing on a curve, based on the dimension on a curve.

Hi yall

I've been searching the forums for an answer but with no luck.

I'm trying, as a start for a more complex deal as you guys can imagine, to array a closed curve along an arc with (for lack of better word) "exponential spacing.

The idea would be to start from one end of the arc with a small spacing, and at the end with a large spacing. Sounds very simple I know.

To explain better, here is a snapshot of my GH and Rhino file. As you can see, dividing the arc evenly was easy. The tough part (for me) is to play with the division factor.

Thanks for your help.

Regards

Thomas

Attachments:

GH screen.jpg, 657 KB
RHINO screen.jpg, 757 KB

Replies to This Discussion

Permalink Reply by Danny Boyes on November 9, 2011 at 7:24am

You can Evaluate a curve by length and therefore you can provide a numerical series with the spacing you desire as a factor of 0 to 1.

Permalink Reply by Thomas on November 9, 2011 at 7:33am

Thanks a lot for your reply Danny.

You think you could post or send me this little file you created so that I can have a better understanding of how you did it? I use build 0.80002, and I'm not sure I found the icon to look like yours...

Permalink Reply by Danny Boyes on November 9, 2011 at 7:42am

I cannot send you the file as it was written in 0.8.0053.

The components are:

Plane -->

Slider --> Pi --> Arc --> Eval Length

Range --> Graph Mapper -->

Locations of the odd ones:

Curve>Analysis>Evaluate Length

Sets>Sequence>Range

Params>Special>Graph Mapper

Range's inputs D = a domain of 0 to 1 and N = 10

Graph Mapper type is a Bezier