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  #1  
Old 07-20-2004, 11:23 PM
adimov adimov is offline
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Join Date: Sep 2003
Location: Santa Barbara, CA
Posts: 11
Question Physics engine question

I am using the physics engine and when I run the following code:

cane2=viz.add('cane2.WRL')
cane2.scale(.007, .007, .007)
gravity = viz.addplane(0,1,0,0)
body = viz.addbody()
body.addbox(0.05,1.5,0.05,1)
cane2.link(body)

the object cane2 shoots up in the air before falling down on the ground...

Actually, let me explain what I want to do: I want to have an object in a world that I will position in an arbitrary location, resize and rescale it. Then, when I press a key, I would like to enable the physics engine and have the object fall. It may be easer to show me how to do that. I've followed the physics2 example, but will need more help.
Thanks very much,

Alex from RECVEB
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  #2  
Old 07-21-2004, 09:40 AM
farshizzo farshizzo is offline
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Join Date: Mar 2003
Posts: 2,849
Hi Alex,

First I'd like to say that the physics engine interface has not been finalized yet, so it may change in future versions. The reason the object initially shoots up is because it starts out partially below the ground plane, so the physics engine is overcompensating in order push it out. You can either translate the body above the ground plane, or disable it by calling body.disable(). Later you can use body.enable() to have it fall down. What you want to do sounds fine, except for rescaling the object. Currently there is no way to rescale a physics object.
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  #3  
Old 07-22-2004, 12:33 PM
adimov adimov is offline
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Join Date: Sep 2003
Location: Santa Barbara, CA
Posts: 11
Thanks, enable() and disable() did the job!
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