I’ve been using Rhino for awhile now but didn’t start learning Bongo until a couple of weeks ago. Some of the IK components make sense, but I’m at a loss as to how to tie them together for a moving object.
In the attached document, I’m trying to have a V shaped armature open and close as two ends are rotated around different orbits. Thanks for any pointers, suggestions, hints, or sections of the manual for me to read again.
can we expand on this a little, I was trying this and also drew a wire frame of a simulated ram. So I was able to get it to work ( a little sloppy) I know I am probably doing it the hard way…adjusting angles and distances manually. I also have a grouped object I Was making a child of the rotated part.
Yep, a little IK could help smooth this model out as well. Here’s what I whipped up. Instead of the group animated to push I have the their parent rotating and make that a telescopic joint. Then there are two goals, one at each end of the bottom link. Everything else is a hinge rotating to meet those goals.
Apart from the transcendent IK Bongo has other tools to help out in this. In some models Expressions and Simple Constraints (which in my opinion are easier to implement) can do which is not so easily done manually.
The equality of the angles within the parallelogram is used in the Expression set for Objects B and C. Hence editing the motion of Object A is automatically transmitted to B and C.
In order to animate the piston (hardly impossible to do manually) the Simple constraint ‘Look At’ comes in very handy. And yes … again … 2 auxiliary points are needed to act as target.