need help for chain bone of a mechanic door.

kerabera

i create au little spaceship with 3dsmax.

then i importe it in daz because i like working on daz.so i begin to build a skelleton for the ship to have bone to all animated things in it.

when suddenly i have a big problem. i create a rear big door who have a big "action pivot" on his low,then there is little arms build on it to hold his weight.

i create all the child bone door>bone pivot1>bone pivot2>bone pivot3

 

the problem is how to fix/lock the last bone to forbid it to move in translation ?

thanks

Richard Haseltine

one trick people use for things like this is Point At - create an anchor bone on the door or on the base, then set the other chain to Point At the anchor. That works well for pistons but may take a bit of fiddling with this kind of arrangment; if you search we did hae a discussion with someone wanting to create the kind of thing you see on contemporary doors, to swing them shut, which would require very similar set-up.

kerabera

ok thanks.

i trying all sort of anchor and nothing work.

i tried with pin in animate but same result.

and i don't found the discussion you talk about.

in fact the simple fonction of freeze position of a bone is missing in daz.

kerabera

ok that's work.

i made like you said with an anchor but i need to put some adjustement to work.(adjustement who must be doing in the default position of the arm,so in my case door close,arm folded)

first: i lock all the 3 translations of every bone of that system but not with "pin translation" that's not work.i block them in every "parameter" tab by puting "use limit" in those parameter then i write 0 in max limite and 0 in min limit:

 

second: i made the same thing for the rotation of all the bones but only two of those rotation. i keep of course the degree of rotation who must work. i put limit of rotation on the first bone of the big door but all the other bone must not have limit on the used axe of rotation.

third: i put like you say a system of anchor. at the end of the arm system i put a vertical bone who is lock in translation with the "pin translation" (with the limit at zero like previously that not work) then i put exactly at his end another bone but not attache to him (this bone come from Hip) and then in parameter of anchor 1 "point at anchor2":

fourth: to manipulate the system i just must act slowly on the rotation of the big door and that work ! it stay a little glitch at the final axe of rotaion at the end of the arm,it's seem moving a very little at a time in the movement but it's not really visible if you don't know it exist

if i remove only one of all those setting,nothing works anymore.

hope that will serve to other people.