[SOLVED] How to set a node's rotation in the c++ code?

[charles]

Anyone know how to set a node’s rotation using the c++ code? the node is just one of any element.

[charles]

Imagine a series of linked beams. As far as i konw, from the “KU=P” equitions, we can get the displacement vector “U”, but the radian in “U” is not the same as euler angles, so one can not just use euler angle to change a node’s rotation. so how to roate a node?

[Hugo]

Hi @charles,

You can specify to your MechanicalObject (containing the rigid frames) their position and orientation with a quaternion.
I think the ArticulatedSystemMapping is close to what you need but I remember struggling a bit myself using it, but it’s worth having a look (in examples/Components/mapping)

Best

Hugo

[charles]

i have solved the problem, not by looking at the source code though. it turns out a normal question in area which need to compute the orientation of a object, like computer graphic or robot control etc,and so many others.

and by the way,how to @ someone in a topic?

[charles]

It turns out to be a normal question in field of robot control or computer graphics, i see now. Thanks all the same.

[Author]

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