simple issue: moving a circle along a line within geometry

i have a simple piece of geometry, and the center point of the circle is defined by the end point of a line. i want to be able to move the circle down that line. i thought i would use subtraction from the output of the line component before it reaches the center point of the circle, but i receive an error message. it seems like there is a simple solution. can anyone advise? files are attached.

with thanks

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Permalink Reply by Caerdroia on August 21, 2013 at 11:25am

Hi Pwdarden,

I think a relatively simple fix would be to deconstruct the point into each of it's three constituent values, and then subtract your number from each of these values. Then, using a simple cull pattern, (True, False, False) (False, True, False) (False, False, True) you could reconstruct the point with the desired values. For instance:

Permalink Reply by Jackson Bewley on August 21, 2013 at 9:38pm

If all that you want to be able to do is move the circle along the line using a slider, you can use the component 'point on curve' which IS a slider that controls a point along a curve. You would run the line into the 'point on curve' and the output into the center of your circle.

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