Matthias Koch
Matze1996
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Day 5 | Environment | Image March 5, 2026, 3:56 p.m.
Environment
Day 4 | Architecture | Image March 4, 2026, 5:40 p.m.
Architecture
APEX Full Body IK (fbik) Pin Root March 12, 2025, 4:22 p.m.
Okay, the error was on my side.
It is possible to add an additional joint as a root joint and use that joint as a driver. The results obtained from this approach are very similar to the “pin roots” feature. However, if you do not add an additional joint and use the first joint directly as a driver, it won’t work because the first joint’s movement and rotation are constrained by the driver, and thus cannot be controlled by the FBIK solver.
I am now facing another issue. Whenever I use the jointconfigure node, the APEX FBIK solver seems to go crazy. I have replicated the setup in SOPs, where it works just fine. I read somewhere that the APEX FBIK solver currently does not support limits, so in this example I am only using weights. The manual states: “If the weight attribute is used, a default weight has to be applied to all the driven joints before overriding specific joints with differing values,” and I’ve taken that into account as well.
I have no idea what is happening and hope someone can help. I have attached a small example file to illustrate the issue.
It is possible to add an additional joint as a root joint and use that joint as a driver. The results obtained from this approach are very similar to the “pin roots” feature. However, if you do not add an additional joint and use the first joint directly as a driver, it won’t work because the first joint’s movement and rotation are constrained by the driver, and thus cannot be controlled by the FBIK solver.
I am now facing another issue. Whenever I use the jointconfigure node, the APEX FBIK solver seems to go crazy. I have replicated the setup in SOPs, where it works just fine. I read somewhere that the APEX FBIK solver currently does not support limits, so in this example I am only using weights. The manual states: “If the weight attribute is used, a default weight has to be applied to all the driven joints before overriding specific joints with differing values,” and I’ve taken that into account as well.
I have no idea what is happening and hope someone can help. I have attached a small example file to illustrate the issue.