CompuServe Messages

IK advice?

    21-Apr-95 08:37:31
Sb: #165925-IK advice?
Fm: Jonas Ruikis [ADESK] 73172,1351
To: Mitch Gates 73563,2073
Hi Mitch, << What I want to do is set up the IK chain for each lip so I can grab the bone in the center of each series and move it around and have the bones on either side follow, with the chain anchored at the corners of the mouth, sort of like a rope tied at both ends to posts. Is IK capable of this? >> This doesn't sound too different from moving a human pelvis and keeping the feet placed on the ground while using IK. I would have 2 dummy objects placed at the corners of the mouth. You could use either Interactive or Follow to move the mouth_center_bone and then use the Follow Object to solve for the end effectors' placement to the static mouth_corner_dummies. This is very similar to keeping feet on a moving/flexing diving board while the body is compressing/elongating.. Please see the following file if you haven't reviewed it yet.. File Info for FLIP.ZIP Section: Mesh/Project Files Contributor: 73172,1351 Size: 95951 Submitted: 10/21/94 Type: Binary Accesses: 15 Title: IK Backflip Keys: IK FLIP R4 This is an example of using IK a number of different ways. A woman doing a 1 1/2 back flip off of a diving board. There was no keyframing of the board or the woman on my part. All movement solved for by using IK. This zip includes a solved version and an unsolved version so that the R3 users can compare the two files. Note also the flip.zip (a flip.fli) in the Animations section of the lib. IK'd and uploaded by jonas. [dl time at 2400 baud: 7 min]