5 replies to this topic

[Jagberg]

Hi everybody!
I'm kind of stuck here...
I want to make a lightbulb that swings on the end of a wire.
The wire I've done with spline dynamics, but how do I attach the lightbulb object to the end of the wire so that it follows the motion?

TIA
Erik

Edited by 3DKiwi, 05 December 2007 - 10:29 AM.
Topic moved. Posted in wrong forum.

[Rantin Al]

Here's a simple XPresso set up.

The spline's second point (Index1) position is fed to the sphere position.
When the end point moves, the bulb will follow.

HTH. Cheers, Alan.
[attachment=46135:Wire_and_Bulb.c4d.zip]

[Jagberg]

Alan,
That worked perfectly!
Now the next challenge:
What if I also want it to rotate according to the rotation of that vertex?

There's a challenge for you!

/Erik

[Rantin Al]

He-he! Catch me if you can, Erik.

A couple of Constraints and a little dash of COFFEE courtesy of Chris Montesano.
Move or rotate the 'Move or H-Rotate Me' null.

Bulb aimed to first spline point.
Flex spline length fixed.
Bulb can be rotated in H.

The XPresso could probably be tidied up a little. Possibly without the Constraint tags but they are easier.
Anyway, it works. http://www.c4dcafe.com/ipb/public/style_emoticons/default/wink.gif

Cheers, Alan.
[attachment=46212:Wire_and...lb_2.c4d.zip]

PS. The COFFEE is from the current 3DAttack magazine. Worth getting for this tutorial alone.

[Mike Fix]

Those files aren't showing up for me.. Is there a way to get those posted again?

[HSrdelic]

Could not he simply use aim constraint at hidden null attached to desired vertex?

EDIT:just saw that you want rotate according to vertex

Edited by hsrdelic, 20 January 2010 - 04:21 PM.