Custom Ik Spline Solver
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Skarone
Jun 25, 2015, 10:27:41 AM6/25/15
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I'm trying to create a custom Ik Spline Solver, with stretch in joints..
The rotation part of the joints works perfect, but when I try to apply scale to the joints, they scale more than they should, but if I check their scales values are correct..
I just save the initial length of the curve, and then check the current length and get the scale value from that ( currentCurveLength / initialCurveLength ).. the math is very simple..
I tried the code in python and in C++, both are getting the same issue.
I didn't found any information on how the solver really works..
Also I didn't found how to make the solver a real spline solver, because for now is detected as a simple ik solver..
If someone has some information in this topic and could help me :)
Marcus Ottosson
Jun 25, 2015, 10:30:43 AM6/25/15
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Double check scale compensation on the joints. In the attribute editor, there's a toggle for it.
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Ignacio Urruty
Jun 25, 2015, 10:44:34 AM6/25/15
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:/ No, that's not the issue...
The Scale values are ok... is like need a refresh in some step... if I modify the curve and then change the joint scale by hand in the channel box, the joints moves to the expected position...
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Marcus Ottosson
Jun 25, 2015, 10:50:07 AM6/25/15
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Well the scale values will act differently depending on scale compensation and whether your joints are part of the same hierarchy, your math will have to take that into account.
if I modify the curve and then change the joint scale by hand in the channel box, the joints moves to the expected position…
In that case it sounds like a dirty-propagation issue. Does it happen in both the old and new viewports?
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Ignacio Urruty
Jun 25, 2015, 11:21:17 AM6/25/15
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:( is the fucking viewport 2.0!
grrrr, if I switch to Legacy Default, works perfect!
Marcus Ottosson
Jun 25, 2015, 11:26:36 AM6/25/15
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Yeah, don't worry too much about it. It happens with Maya's own nodes as well. It's simply not that great of an implementation, sadly.
On 25 June 2015 at 16:21, Ignacio Urruty <inia...@gmail.com> wrote:
:( is the fucking viewport 2.0!grrrr, if I switch to Legacy Default, works perfect!
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