Re: [Maya-Python] custom constraint
Didnt they introduce a MPXConstraint class at some point for custom constraints to get this behaviour? At 21:29 20.08.2011, you wrote: I`m working on custom constraint and wonder how Maya does the connections to translate or rotate attribute, so they can be still changed. I will explain it more. If you make Maya constraint, you can still move constrained object around, even if there are connections. Actually Maya keyframes work the same way, you couldn`t animate really if once keyframe is connected object`s attribute values couldn`t change. So I wonder if this is internal way of plug evaluation or I need specific type of attribute (constraintTranslate seems to be simple double3 type). Does anyone know how this works? thanks. -- view archives: http://groups.google.com/group/python_inside_maya change your subscription settings: http://groups.google.com/group/python_inside_maya/subscribe Jan Berger j...@janberger.de :: www.janberger.de -- view archives: http://groups.google.com/group/python_inside_maya change your subscription settings: http://groups.google.com/group/python_inside_maya/subscribe
[Maya-Python] Re: custom constraint
yes, that`s what I started from, my node is based on this proxy. But it doesn`t seem to have implemented output attributes for translate/ rotate. I checked the example surface constraint too. There are only some useful internal methods, but I guess you need to make your own outputs. But, I just looked at multiway constraint (just have the PDFs, not the code) and they are using pairBlend nodes. Very smart! :) So I tested it and it works. If you output your values via pairBlend you get both: set value, but still leave it free to change interactively. I also tested adding keyframes, and Maya picked up existing pairBlend node automaticly - even better. So I guess it will follow animation and when constraint input would get dirty it would set its values over keyframes. J On Aug 20, 8:35 pm, Jan Berger j...@janberger.de wrote: Didnt they introduce a MPXConstraint class at some point for custom constraints to get this behaviour? At 21:29 20.08.2011, you wrote: I`m working on custom constraint and wonder how Maya does the connections to translate or rotate attribute, so they can be still changed. I will explain it more. If you make Maya constraint, you can still move constrained object around, even if there are connections. Actually Maya keyframes work the same way, you couldn`t animate really if once keyframe is connected object`s attribute values couldn`t change. So I wonder if this is internal way of plug evaluation or I need specific type of attribute (constraintTranslate seems to be simple double3 type). Does anyone know how this works? thanks. -- view archives:http://groups.google.com/group/python_inside_maya change your subscription settings: http://groups.google.com/group/python_inside_maya/subscribe Jan Berger j...@janberger.de ::www.janberger.de -- view archives: http://groups.google.com/group/python_inside_maya change your subscription settings: http://groups.google.com/group/python_inside_maya/subscribe
[Maya-Python] Re: custom constraint
well, after double checking. Maya connected keyframes directly per axis (TX, TY, TZ etc..) while pairBlend was going compound -- compound. But, if it works :) On Aug 20, 8:46 pm, Jakub Krompolc syntet...@gmail.com wrote: yes, that`s what I started from, my node is based on this proxy. But it doesn`t seem to have implemented output attributes for translate/ rotate. I checked the example surface constraint too. There are only some useful internal methods, but I guess you need to make your own outputs. But, I just looked at multiway constraint (just have the PDFs, not the code) and they are using pairBlend nodes. Very smart! :) So I tested it and it works. If you output your values via pairBlend you get both: set value, but still leave it free to change interactively. I also tested adding keyframes, and Maya picked up existing pairBlend node automaticly - even better. So I guess it will follow animation and when constraint input would get dirty it would set its values over keyframes. J On Aug 20, 8:35 pm, Jan Berger j...@janberger.de wrote: Didnt they introduce a MPXConstraint class at some point for custom constraints to get this behaviour? At 21:29 20.08.2011, you wrote: I`m working on custom constraint and wonder how Maya does the connections to translate or rotate attribute, so they can be still changed. I will explain it more. If you make Maya constraint, you can still move constrained object around, even if there are connections. Actually Maya keyframes work the same way, you couldn`t animate really if once keyframe is connected object`s attribute values couldn`t change. So I wonder if this is internal way of plug evaluation or I need specific type of attribute (constraintTranslate seems to be simple double3 type). Does anyone know how this works? thanks. -- view archives:http://groups.google.com/group/python_inside_maya change your subscription settings: http://groups.google.com/group/python_inside_maya/subscribe Jan Berger j...@janberger.de ::www.janberger.de -- view archives: http://groups.google.com/group/python_inside_maya change your subscription settings: http://groups.google.com/group/python_inside_maya/subscribe
