WM 2d Question

[VergingOnDone]

Can you lock and unlock a joint connection during various times in a timeline?
I'm trying to get a joint to lock and release during movement can it be done?

[Ed]

You can create a rigid joint in the same position as a pin joint and then uncheck "Always" under "Active when" and add a formula like "and(frame()>100,frame()<200)", which would make the joint locked when the frame number is between 100-200. You could also substitue the formula "and(t >2.5,t<10)" which would make the joint rigid between 2.5 and 10 seconds from start of the simulation. You could even make a joint lock or unlock interactively by using a button in the formula.

[VergingOnDone]

Ah thanks, I saw the properties window active check box and value under but wasn't sure how to set it's values thanks!
Oh could you describe the button / formula feature because I need the unlock/lock to happen throughout the timeline.
Thanks again.

[Ed]

Go to "Define/New Control" and create a generic control. Change the properties of the control to make it a button and then put Input[#] in the "Active when" field.

In case you need it, here is a link to the complete formula reference for WM2D.

http://mdae.snut.ac.kr/pds/lecture/pds/ ... erence.pdf

Good luck!

[VergingOnDone]

Thanks again for the help!

[Ed]

No problem, any time.

[sleepy]

ssmith,
I'm sure it's been posted before,but save an old guy trouble and tell me where I might find the actual program for wm2d.
Thanks in advance.

[Ed]

You can get the demo from http://www.workingmodel.com

[sleepy]

ssmith,
Thanks again for being so fast with your help.