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Chipmunk Physics • View topic - Resizing objects

Resizing objects

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Resizing objects

Postby reizencroft » Mon Oct 20, 2008 4:48 am

Need help on resizing an object.

Basically I have a ball which have a radius that varies according to its y position. What's the correct way of resizing it?

I had little success in doing this. But when I add line segments to the collision space, it crashes. It crashes on the function cpShapeCacheBB and the shape was the circle.

Any help would be greatly appreciated.

Thanks
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Re: Resizing objects

Postby slembcke » Mon Oct 20, 2008 10:00 am

Chipmunk does not support resizing or changing the shape of objects on the fly.

You can do it by deleting and re-adding a new shape, but it will not act like real physics.
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Re: Resizing objects

Postby reizencroft » Mon Oct 20, 2008 9:10 pm

Actually, that was what I've been doing. But when I add line segments to the space, it crashes on the function cpShapeCacheBB .
what could be causing this?
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Re: Resizing objects

Postby slembcke » Mon Oct 20, 2008 10:42 pm

The cpShapeCacheBB() crash would probably be due to a bad shape pointer, or a shape that you freed without removing from the space.
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Re: Resizing objects

Postby reizencroft » Mon Oct 20, 2008 11:47 pm

Thanks. Yup your right. I wasn't removing the shape from space before freeing it.

Thanks a bunch.
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