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Chipmunk Physics • View topic - Position of body when two shapes using it

Position of body when two shapes using it

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Position of body when two shapes using it

Postby sumitkum » Wed Feb 09, 2011 2:41 pm

If two shapes are using a same body, then how will we set the position of the body

body->p = shape1.position;
or

body->p = shape2.position;

How should I handle it
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Re: Position of body when two shapes using it

Postby slembcke » Wed Feb 09, 2011 2:57 pm

Shapes are always positioned relative to bodies. When the body moves, so will the shapes.
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Re: Position of body when two shapes using it

Postby sumitkum » Wed Feb 09, 2011 3:33 pm

Yes, shapes will be updated according to the position of body. But, Don't we have to give initial position of body.
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Re: Position of body when two shapes using it

Postby slembcke » Wed Feb 09, 2011 3:53 pm

The position of the body is the position of it's center of gravity. The shapes move and rotate around that.

So when you set the position of the body initially, you are setting it's center of gravity. The shapes attached are always relative to that.
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Re: Position of body when two shapes using it

Postby sumitkum » Wed Feb 09, 2011 4:17 pm

I got it, Thanks for your help
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