CompuServe Thread

#Help needed on a project

4 messages in this thread
#46614From: Jim BeckJun 17, 1993 5:46 PM
Please help us by calling Jim or Dwane at 1-504-467-7171 or faxing an answer to 1-504-466-9085 so we can finish the following: During a project using Studio 3D for a crane operation simulation, we ran into the following problem that we have been unable to find an answer for in the manual and in a series of learning tapes. There is a cable that's hooked to the crane that lowers or raises the boom. It has about seven sections to it and we are using the hierarchy link. What can we do to keep the cable in place and shorten it as the boom moves up or down?
#46619From: Peter BaileyJun 17, 1993 6:02 PM
>>It has about seven sections to it and we are using the hierarchy link. What can we do to keep the cable in place and shorten it as the boom moves up or down?<< Jim, Is the cable Hierarchicaly linked to the crane, and is the cable in seven sections or are there seven sections to the whole model? What I would do is, not link the cable at both ends to the crane but have it linked at it's lowest point to the crane and rotate it so it touches the crane at it's topmost point (the boom). Then as the boom raises and lowers, tilt the cable to match it, using "scale" on the cable if you need to. I hope this is of some help. Glenn
#46621From: John SchmidtJun 17, 1993 6:07 PM
Jim, Why don't you just use the Modify -> Object -> 2D Scale while in the keyframer and simply make the cable go from a long one to a short one over a series of frames? John
#46635From: John TissavaryJun 17, 1993 9:00 PM
PMJI, but if the other excellent suggestions don't word, and there is a large piece of geometry adjacent (preferrably at a steep angle to the cable) you can have the cable enter this adjacent geometry (i.e. a servo box that is attached to the main body of the crane). The main geometry will hide the cable as it enters, and you will have the illusion of spooling, or shortening cable. Hope this helps, ^.^ jt