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Old 10-08-2009, 11:28 PM
atamasan atamasan is offline
Join Date: Jul 2009
Posts: 26
Question about collision for Hand model(bones)


I'm using Hand model with patriot(Polhemus).

I have tried some methods for hand model collision because I want the hand model to grab object.
But when I try to apply collision, I get error messages every time.

My method is like this....
(get bones :bone01~bone16)
bone01=hand.getBone('bone index 1-2')

Then, I run the code and errors always appear. But I can hardly understand errors written in English.

Please give me ideas about that.

Thank you for reading.
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Old 10-18-2009, 07:42 PM
atamasan atamasan is offline
Join Date: Jul 2009
Posts: 26
I have solved the problem by myself.
Thank you.

But I've got another question.
When I use <node3d>.collideSphere, the command usually work great. But when I change the scale of the node(especially, when I make the node small), collideSphere doesn't work.

For example,,,

In this case, collision doesn't happen(ball falls down through ground). But if I change the scale of the ball(I make the ball bigger like [2,2,2]), collision can be seen.

What is the reason for this? Please give me some advice.

Thank you for reading.
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Old 10-23-2009, 10:53 AM
farshizzo farshizzo is offline
WorldViz Team Member
Join Date: Mar 2003
Posts: 2,849
Vizard uses the ODE physics engine and we have noticed that it has problems computing collisions for very small objects. I would suggest avoiding using small scales on physics objects if possible.
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Old 10-26-2009, 04:50 AM
atamasan atamasan is offline
Join Date: Jul 2009
Posts: 26
Hi, thank you for your advice.
Fortunately, to avoid using small scales is not big problem for me.
I will try with big scaled objects.

Thank you very much.
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