Maya for 3D Printing - Rapid Prototyping
In this course we're going to look at something a little different, creating technically accurate 3D printed parts.
# 1 09-01-2007 , 02:01 PM
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gravity problem

hey guys, well since i havnt touched gravity/dynamics for quiet a while i decided to brush up on it. when i try to add gravity to a ball/object or anything, an error comes up saying: "Error: pSphere1 owns no fields. Please select a field or an object which owns one." it seems there is no fields? what is that...

thanks, marlon

# 2 09-01-2007 , 02:03 PM
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Seems a bit strange, hae you checked using the connection editor if the field is connected to the object?


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# 3 09-01-2007 , 02:18 PM
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wow thanks for the quick response. ermm there seems to be nothing in the connection editor when i look, am i doing something wrong?

# 4 09-01-2007 , 02:38 PM
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When your creating the field you should select the sphere then create the field.

If you want to you can connect the field to the objet by selecting the object then going to fields and selecting the graviey field.


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# 5 09-01-2007 , 02:50 PM
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i do select the sphere then create the field but nothing happends and error pops up. this is wierd usually along time ago i just have to select the object and create gravity field but not anymore.

do you think it can be something else like in an option where i have accidently disabled gravity or some sort?

# 6 09-01-2007 , 02:52 PM
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Dont think so but you might have???

Have you tried connecting it via the connection editor?


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# 7 09-01-2007 , 03:04 PM
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i have kind of tryed but i think im doing something wrong or missing a step, can you tell me the proper steps of doing that... thanks

# 8 09-01-2007 , 03:13 PM
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Go to window->relationships editors->Dynamic Relationships

then you should see a list of items on the left select your sphere an then the gravity field should be displayed, if its highlighted then its connected to the sphere if its not then connect it by selectin the gravity field. see if that works man.


"No pressure, no diamonds" Thomas Carlyle
# 9 09-01-2007 , 03:29 PM
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its not highlighted so then i connected it... but i think it still dosnt work because when i press play on the time/range slider my object/sphere dosnt roll down a 45degree floor(plane) it dosnt even budge and move an inch. wierd,

# 10 09-01-2007 , 03:34 PM
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Strange that dude, does this work?

Its a simple poly ball on a poly plane with a gravity field attached to the sphere.

see if it works on your system (its in maya 6.0 by the way)

Attached Files
File Type: mb rigid_test.mb (53.8 KB, 249 views)

"No pressure, no diamonds" Thomas Carlyle
# 11 09-01-2007 , 03:43 PM
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(im using maya 7.0 btw)
wow it works ... why isnt it happen to me! arrghh...

i wanted to see and fiddle around with the scene to see if i can try to create a ball and attach gravity to it and this is what happends...

i created a sphere and attached gravity to it, at 0.1 seconds i see at the bottum right the error come up but then another one comes up, "Error: No object matches name: |". i also added create active riggid body to the new sphere and now when i play the scene, after both of the balls hit the ground my ball just starts to rise slowly like theres no gravity?

# 12 09-01-2007 , 03:46 PM
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Strange???

I might be upgrading soon to maya 8, from uni, not too sure if im looking forward to it though.


"No pressure, no diamonds" Thomas Carlyle
# 13 11-01-2007 , 06:04 AM
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hmm wierd...

"I might be upgrading soon to maya 8, from uni, not too sure if im looking forward to it though."

yeah i woudnt aswell but we might all have to learn it sometime in the future maybe, you might get a headstart user added image

just wondering, can you post a picture of your gravity option box so i can see if i have accidently changed and clicked on something else. thanks,

does anyone else know the problem or should i just reinstall maya 7?

marlon

# 14 11-01-2007 , 07:04 AM
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Here you go, a screen grab of my gravity field settings, its just the default.

Dunno what it could be, maybe delete your preferences??

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"No pressure, no diamonds" Thomas Carlyle
# 15 11-01-2007 , 07:15 AM
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WOOOOHOOOO!

your gravity option box was the exact same as mine... out of no where i just felt like going to Edit --> Reset Settings... and it worked. and it didnt even change anything, wierd. Thanks for your help Gster user added image

Marlon

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